G311P683-7211006F - Caddock Electronics, Inc.

REVISIONS

SYMBOL DESCRIPTION DATE APPROVAL

---

Original Release

Complete Rewrite per RN A-108

Incorporated Changes per RN A-122

01/07/91

07/02/96

07/05/01

SHEET REVISION STATUS

SH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

REV BABA A BAB B AAAB

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REV

ORIGINATOR:

T. J. Perry/Unisys DATE

11/16/90 FSC: 5905

APPROVED:

M. A. Garrison/Unisys 11/16/90

CODE 311 APPROVAL:

P. J. Jones/GSFC 1/3/91 Resistor, Fixed, Precision

High Voltage (Caddock

Type MG and HG)

CODE 311 SUPERVISORY APPROVAL:

D. G. Cleveland/GSFC 1/7/91

ADDITIONAL APPROVAL: S-311-P-683

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

GODDARD SPACE FLIGHT CENTER

GREENBELT, MARYLAND 20771

CAGE CODE: 25306 Page 1 of 13

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1. SCOPE

1.1 Scope. This specification covers the procurement requirements for fixed, metal oxide, precision

high voltage resistors. These resistors are intended for use in GSFC space system electronic

circuits requiring high voltages and high resistance values with good stability.

1.2 Goddard part number. Parts procured in complete compliance with the requirements of this

specification shall be identified by a Goddard part number of the following form.

G311P683 -750 1006 D

Goddard Style Resistance Tolerance

Designator (See 1.3) Value (See 1.5)

(See 1.4)

1.3 Style. The style shall be identified by the first three digits of the dash number and specifies

resistors of a type and size listed in Figure 1 and Table I.

1.4 Resistance value. The nominal resistance value is specified by the four digits in the fourth, fifth,

sixth, and seventh positions of the dash number. The first three digits (fourth, fifth, and sixth)

represent significant figures, the last digit (seventh) specifies the number of zeroes to follow.

example: 1006 = 100 megohm

The resistance value selected may be any value within the standard resistance range listed in Table

1.5 Tolerance. The resistance tolerance is identified by a single letter in accordance with Table II.

Figure 1. - Resistor outline drawing (see Table I).

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Table I. - Styles.

Style Power

Rating

125°C

Maximum

Working

Voltage Tolerance Resistance 3/

Dielectric

Strength Dimensions in Inches (Millimeters)

1/(watts) (volts) 2/Minimum Maximum (volts) AB C

650 0.50

0.25 600

300 D, F

B, C 200Ω5M 750 .313±.020

(7.95±.51)

.094±.015

(2.39±.38) .025±.002

(.64±.05)

655 0.50

0.25 600

300 D, F

B, C 200Ω8M 750 .313±.030

(7.95±.76)

.109±.025

(2.77±.64) .025±.002

(.64±.05)

660 0.60

0.30 1,000

500 D, F

B, C 400Ω10M 750 .500±.030

(12.70±.76)

.094±.015

(2.39±.38) .025±.002

(.64±.05)

680 0.80

0.40 2,000

1,000 D, F

B, C 600Ω20M 750 .750±.030

(19.05±.76)

.094±.015

(2.39±.38) .025±.002

(.64±.05)

710 1.0

0.5 4,000

2,000 D, F

B, C 800Ω50M 750 1.000±.040

(25.40±1.02)

.094±.015

(2.39±.38) .025±.002

(.64±.05)

712 0.60

0.30 1,000

500 D, F

B, C 800Ω20M 750 .400±.060

(10.16±1.52)

.140±.030

(3.56±.76) .025±.002

(.64±.05)

714 1.0

0.5 1,000

500 D, F

B, C 200Ω20M 750 .562±.060

(14.27±1.52)

.150±.030

(3.81±.76) .032±.002

(.81±.05)

715 1.0

0.5 2,000

1,000 D, F

B, C 400Ω50M 750 .750±.060

(19.05±1.52)

.140±.030

(3.56±.76) .025±.002

(.64±.05)

716 1.5

0.75 4,000

2,000 D, F

B, C 600Ω75M 750 1.000±.060

(25.40±1.52)

.140±.030

(3.56±.76) .025±.002

(.64±.05)

717 1.5

0.75 2,000

1,000 D, F

B, C 600Ω75M 750 0.710±.050

(18.03±1.27)

.240±.030

(6.10±.76) .040±.002

(1.02±.05)

720 2.0

1.0 6,000

3,000 D, F

B, C 1kΩ150M 750 1.500±.080

(38.10±2.03)

.140±.030

(3.56±.76) .025±.002

(.64±.05)

721 2.0

1.0 4,000

2,000 D, F

B, C 200Ω100M 750 1.000±.050

(25.40±1.27)

.240±.030

(6.10±.76) .040±.002

(1.02±.05)

725 2.5

1.25 10,000

5,000 D, F

B, C 1.5kΩ200M 750 2.000±.080

(50.80±2.03)

.140±.030

(3.56±.76) .025±.002

(.64±.05)

730 3.0

1.5 6,000

3,000 D, F

B, C 500Ω250M 1,000 1.500±.080

(38.10±2.03)

.240±.030

(6.10±.76) .040±.002

(1.02±.05)

731 2.6

1.3 4,000

2,000 D, F

B, C 200Ω150M 1,000 1.000±.060

(25.40±1.52)

.315±.030

(8.00±.76) .040±.002

(1.02±.05)

735 3.6

1.8 10,000

5,000 D, F

B, C 750Ω300M 1,000 2.000±.080

(50.80±2.03)

.240±.030

(6.10±.76) .040±.002

(1.02±.05)

740 3.6

1.8 6,000

3,000 D, F

B, C 300Ω300M 1,000 1.500±.060

(38.10±1.52)

.315±.030

(8.00±.76) .040±.002

(1.02±.05)

745 5.0

2.5 15,000

7,500 D, F

B, C 1kΩ500M 1,000 3.000±.100

(76.20±2.54)

.240±.030

(6.10±.76) .040±.002

(1.02±.05)

750 5.0

2.5 10,000

5,000 D, F

B, C 400Ω500M 1,000 2.125±.060

(53.98±1.52)

.315±.030

(8.00±.76) .040±.002

(1.02±.05)

780 7.5

3.75 15,000

7,500 D, F

B, C 600Ω750M 1,000 3.125±.060

(79.38±1.52)

.315±.030

(8.00±.76) .040±.002

(1.02±.05)

785 8.0

4.0 20,000

10,000 D, F

B, C 800Ω1,000M 1,000 4.000±.120

(101.60±3.05)

.315±.030

(8.00±.76) .040±.002

(1.02±.05)

810 10.0

5.0 25,000

12,500 D, F

B, C 1kΩ1,250M 1,000 5.000±.120

(127.00±3.05)

.315±.030

(8.00±.76) .040±.002

(1.02±.05)

815 15.0

7.5 30,000

15,000 D, F

B, C 1kΩ2,000M 1,000 6.000±.120

(152.40±3.05)

.350±.040

(8.89±1.02) .040±.002

(1.02±.05)

1/ See 6.1

2/ See 1.5

3/ M = megohm

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Table II. - Resistance tolerance.

Letter Resistance Tolerance

+ 0.1%

+ 0.25%

+ 0.5%

+ 1%

1.6 Temperature characteristic. The resistance temperature characteristic is independent of style or

resistance value within the given standard resistance ranges (see Table I). The temperature

characteristic is listed in Table III.

Table III. - Temperature characteristic.

Temperature Range Temperature Characteristic

(referenced at +25°C)

+15°C to +45°C

-15°C to +105°C

-55°C to +125°C

± 40 ppm/°C

± 80 ppm/°C

± 140 ppm/°C

1.7 Performance characteristics. The performance of resistors procured to this specification shall be as

specified in Table IV.

2. APPLICABLE DOCUMENTS

2.1 Documents. The following documents, of the issue in effect on the date of invitation for bids or

request for proposal, form a part of this specification to the extent specified herein.

SPECIFICATIONS

MIL-I-45208 Inspection Systems Requirements

MIL-R-39032 Resistors, Packaging of

QQ-S-571 Solder; Tin Alloy, Tin-Lead Alloy, and Lead Alloy

STANDARDS

MIL-STD-202 Test Methods for Electronic and Electrical Component Parts

MIL-STD-1285 Marking of Electrical and Electronic Parts

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Table IV. - Performance characteristics.

Test All Styles

Thermal Shock

(see 3.5) ∆R± 0.25%

Dielectric Withstanding Voltage

(see 3.6) ∆R± 0.15%

Insulation Resistance

(see 3.7) 10,000 MEG (min)

dry

Overload/Overvoltage

(see 3.8) ∆R± 0.50%

Voltage Conditioning

(see 3.9) ∆R± 0.50%

Load Life

(see 3.10) ∆R± 0.50%

Shock

(see 3.12) ∆R± 0.25%

Vibration

(see 3.13) ∆R± 0.25%

Terminal Strength

(see 3.15) ∆R± 0.20%

OTHER PUBLICATIONS

ASTM E595 Total Mass Loss and Collected Volatile Condensable Materials from

Outgassing in a Vacuum Environment, Standard Test Method for

SP 270-02 Test Methods and Screening Procedure for Type HG,

(Caddock) HG(-15), HM, HS, and HV Resistors

GSFC S-311-533 Screening Procedure for Fixed Film, Precision High Voltage, High

Impedance Resistors Caddock MG Style

2.2 Order of precedence. In the event of any conflict between the text of this specification and the

references cited herein, the text of this specification shall take precedence. However, nothing in

this text shall supersede applicable laws and regulations unless a specific exemption has been

obtained.

2.3 Copies of documents. Copies of federal and military documents can be obtained from the

Standardization Document Order Desk, 700 Robbins Avenue, Building #4-Section D,

Philadelphia, PA 19111-5094. Copies of ASTM publications are available from the American

Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.

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3. REQUIREMENTS

3.1 Qualification. Resistors furnished to this specification shall be product which has been granted

qualification approval by NASA/GSFC. Qualification approval shall be based on the following

criteria.

3.1.1 Design and source approval. Prior to qualification, the manufacturer's facility shall be subjected to

survey at the option of GSFC. Compliance with MIL-I-45208 is required. In addition, the history

and detailed engineering of the specific resistor design will be reviewed, as will the documented

manufacturing and quality control procedures. Only those sources approved in the design and

source approval phase shall be eligible for qualification or award of contract under this

specification. Source approval and design approval do not constitute part qualification or an

equivalent thereof.

3.1.2 Part qualification. Resistor product granted qualification shall be that which has passed the

qualification inspection requirements of this specification. This requirement may be satisfied by

passing the qualification inspection (see 4.4).

3.2 Materials.

3.2.1 Materials. Materials shall be as specified herein. However, when a definite material is not

specified, a material shall be used which will enable the resistors to meet the performance

requirement of this specification. Acceptance or approval of any constituent material shall not be

construed as a guaranty of the acceptance of finished product.

3.2.2 Thermal outgassing. Materials must meet outgassing requirements of 1.0% total mass loss (TML)

maximum and 0.1% collected volatile condensable materials (CVCM) maximum when tested in

accordance with 4.6.15.

3.3 Design and construction. Resistors shall be of the design, construction and dimensions depicted in

Figure 1.

3.3.1 Terminal leads. Terminal leads shall consist of nickel plated, oxygen-free, solid copper conductors

covered with a hot solder finish (Type S, 60/40 or 63/37 per QQ-S-571) to meet the solderability

requirement (see 4.6.14).

3.3.2 Insulation. Resistors shall be coated with a high temperature silicone conformal coating to provide

suitable protection to the resistor body.

3.3.3 Resistance material. The metal oxide shall be uniformly deposited and free of blisters, thin spots,

discolorations or any other types of anomalies likely to cause chips, pits, or voids when parts are

abrasively tailored.

3.3.4 End caps. The misalignment of the cap with respect to the core shall not exceed 5 degrees.

3.3.5 Power rating. Power rating is based on continuous full load operation at a rated ambient

temperature of ±125°C as specified in Table I. For higher temperatures, derating shall be in

accordance with Figure 2.

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3.3.6 Voltage rating. Resistors shall have a rated direct current (dc) continuous working voltage, or an

approximate sine wave root-mean-square (rms) continuous working voltage, at commercial line

frequency and waveform, corresponding to the power rating as determined from the following

formula:

E = PR

Where:

E = rated dc or rms continuous working voltage

P = power rating (see 3.3.5)

R = nominal resistance

In no case shall the rated dc or rms continuous working voltage exceed the value specified in Table

Figure 2. - Resistor derating.

3.4 DC resistance. When resistors are tested as specified in 4.6.2, the dc resistance shall be within the

specified tolerance of the nominal resistance.

3.5 Thermal shock. When resistors are tested as specified in 4.6.3, there shall be no evidence of

mechanical damage, and the change in resistance shall not exceed the performance requirement in

Table IV.

3.6 Dielectric withstanding voltage. When resistors are tested as specified in 4.6.4, there shall be no

evidence of flashover, arcing, insulation breakdown, or any type of mechanical damage. The

change in resistance shall not exceed the performance requirement in Table IV.

3.7 Insulation resistance. When resistors are tested as specified in 4.6.5, the insulation resistance shall

meet the performance requirement in Table IV.

3.8 Overload/overvoltage. When resistors are tested as specified in 4.6.6, there shall be no evidence

of mechanical damage, and the change in resistance shall not exceed the performance requirement

in Table IV.

3.9 Voltage conditioning. When resistors are tested as specified in 4.6.7, there shall be no evidence of

mechanical damage, and the change in resistance shall not exceed the performance requirement in

Table IV.

3.10 Load life. When resistors are tested as specified in 4.6.8, there shall be no evidence of mechanical

damage, and the change in resistance shall not exceed the performance requirement in Table IV.

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3.11 Resistance temperature characteristic. When resistors are tested as specified in 4.6.9, the

resistance temperature characteristic shall meet the requirements in Table III.

3.12 Shock. When resistors are tested as specified in 4.6.10, there shall be no evidence of mechanical

damage, and the change in resistance shall not exceed the performance requirement in Table IV.

3.13 Vibration. When resistors are tested as specified in 4.6.11, there shall be no evidence of

mechanical damage, and the change in resistance shall not exceed the performance requirement in

Table IV.

3.14 Resistance to solvents. When resistors are tested as specified in 4.6.12, there shall be no evidence

of mechanical damage, and the marking shall remain legible.

3.15 Terminal strength. When resistors are tested as specified in 4.6.13, there shall be no evidence of

mechanical damage, and the change in resistance shall not exceed the performance requirement in

Table IV.

3.16 Solderability. When resistors are tested as specified in 4.6.14, the criteria for wire-lead terminal

evaluation that is contained in the referenced test method shall be met.

3.17 Marking. Each resistor shall be marked with the Goddard part number, source code,

manufacturer's name or symbol (optional), and date code. Date and source code shall be in

accordance with MIL-STD-1285. The location and number of lines shall be at the discretion of

the manufacturer. The following is an example of the complete marking:

Caddock -Manufacturer's name or symbol (optional)

19647 -Source code

G311P683 -Goddard designator

7501006D -Style, resistance value and tolerance

9626 -Date code

The date code shall be the date of the final assembly operation for the production lot, which for

purposes of this specification, is the same as the inspection lot (4.5.2). The common manufacturing

record shall include the same date code as that placed on parts covered by the record. When the

physical size of the resistor precludes the marking of all of the above information, the Goddard

designator may be abbreviated to P683. However, the complete part number must be marked on

the shipping container.

3.18 Workmanship. Resistors shall be processed in such a manner to be uniform in quality when

inspected in accordance with 4.6.1. Resistors shall also be free of any defects affecting life,

serviceability or performance.

4. QUALITY ASSURANCE PROVISIONS

4.1 Responsibility for inspection. The manufacturer is responsible for the performance of all inspection

requirements, as specified herein, using his own or any other suitable facility acceptable to Goddard

Space Flight Center unless specifically stated otherwise. In instances where the manufacturer does

not possess the necessary test equipment or facilities to perform a test, GSFC may elect to perform

the test. Upon receipt of product, Goddard reserves the right to perform any of the inspections set

forth in the specification where such inspections are deemed necessary to verify conformance to

prescribed requirements.

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4.2 Classification of inspection. Inspection requirements specified herein are classified as follows:

a. Qualification Inspection (see 4.4)

b. Quality Conformance Inspection (see 4.5).

4.3 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in

accordance with the test conditions specified in the "GENERAL REQUIREMENTS" of

MIL-STD-202.

4.4 Qualification inspection (see 4.2). Qualification inspection shall be performed by the manufacturer

on sample units produced with equipment, processes and procedures normally used in production.

At the option of the qualifying activity, data from an established reliability program subjecting same

or similar parts to equivalent or more stringent testing may be submitted for part or all of the

qualification requirements.

4.4.1 Sample. The number of sample units comprising a sample of resistors submitted for qualification

inspection shall be 75.

4.4.2 Sample selection. Sample units submitted for qualification shall consist of 25 high, 25 critical, and

25 low resistance values. The high and low values submitted will determine the range of resistance

values qualified. Critical values permit testing at both full rated power and full rated voltage and are

determined by solving the formula in 3.3.6 for R using E at maximum working voltage and P at

power rating per Table I. Qualification of resistors to tolerance code D (± 0.5%) also qualifies

tolerance code F (± 1%), to tolerance code B (± 0.1%) also qualifies tolerance code C (±

0.25%).

4.4.3 Test routine. Sample units shall be subjected to the qualification inspection specified in Table V in

the order shown. All sample units will be subjected to the inspections of Group 1. The samples

shall then be subdivided as specified in Table V and subjected to the inspections of Groups 2

through 7.

4.4.4 Failures. Failures in excess of those allowed in Table V shall be cause for refusal to grant

qualification.

4.4.5 Inspection report. Qualification test data and the qualification test samples shall be submitted to the

following activity:

NASA/GSFC

Greenbelt, MD 20771

Attn: QPLD Administrator

Code 562

4.5 Quality conformance inspection (see 4.2). Quality Conformance Inspection (QCI) shall be

performed on all product furnished to this specification.

4.5.1 Inspection of product for delivery. Inspection of product for delivery shall consist of the QCI per

Table VI in the order shown.

4.5.2 Inspection lot. An inspection lot shall consist of all resistor product of the same style, resistance

value and tolerance, manufactured at essentially the same time under the same manufacturing

process conditions and identified by a common date code (see 3.17).

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Table V. - Qualification inspection.

Inspection Requirement

Paragraph Method

Paragraph Number of

Sample Units

Number of

Defects

Allowed 1/

Group 1

Visual and

Mechanical

DC Resistance

Voltage Conditioning

3.2.1, 3.3,

3.3.1, 3.17, 3.18

3.4

3.9

4.6.1

4.6.2

4.6.7

All

Samples 0

Group 2

Solderability

Resistance to Solvents 3.16

3.14 4.6.14

4.6.12 12 Units

Any Value 1

Group 3

Thermal Shock

Terminal Strength 3.5

3.15 4.6.3

4.6.13 15 2/1

Group 4

Dielectric Withstanding

Voltage

Insulation Resistance

Overload/Overvoltage

Thermal Shock

3.6

3.7

3.8

3.5

4.6.4

4.6.5

4.6.6

4.6.3

15 2/1

Group 5

Load Life

Resistance Temp.

Characteristic

3.10

3.11 4.6.8

4.6.9 15 2/1

Group 6

Shock

Vibration 3.12

3.13 4.6.10

4.6.11 15 2/1

Group 7

Thermal Outgassing 3.2.2 4.6.15 3

Any Value 0

1/ The aggregate total shall not exceed 2 defective units for the qualification samples.

2/ Sample selection of 5 high, 5 critical, and 5 low resistance values as specified in 4.4.2.

4.5.3 Sample. The QCI shall be performed on 100% of the product furnished to this specification.

4.5.4 Failures. Resistors that do not pass the QCI shall be removed from the inspection lot and shall not

be furnished to this specification.

4.5.5 Lot rejection. Only lots containing not more than 15% rejects shall be furnished to this

specification.

4.5.6 Inspection record. The manufacturer shall be required to maintain a record of all QCI inspection

results (see 4.5.7).

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Table VI. - Quality conformance inspection.

Inspection Requirement

Paragraph Method

Paragraph Criteria

Workmanship

DC Resistance

Overload/Overvoltage

DC Resistance

Voltage Conditioning

DC Resistance

Insulation Resistance

3.18

3.4

3.8

3.4

3.9

3.4

3.7

4.6.1

4.6.2

4.6.6

4.6.2

4.6.7

4.6.2

4.6.5

As stated

∆R per Table IV

Table IV

4.5.7 Retention of qualification. As a basis for retention of qualification, the manufacturer shall be

requested to furnish a summary of QCI inspection results annually. The test summary shall be

submitted to the activity specified in 4.4.5.

4.6 Methods of inspection.

4.6.1 Visual and mechanical inspection (see 3.2.1, 3.3, 3.3.1, 3.17 and 3.18). Resistors shall be

examined to verify that materials, design, construction, physical dimensions, marking and

workmanship are in accordance with the applicable requirements.

4.6.2 DC resistance (see 3.4). Resistors shall be tested in accordance with Method 303 of

MIL-STD-202. The applicable test voltage shall not exceed 100 vdc.

4.6.3 Thermal shock (see 3.5). Resistors shall be tested in accordance with Method 107 of

MIL-STD-202 at Test Condition C.

4.6.4 Dielectric withstanding voltage (see 3.6). Resistors shall be tested in accordance with Method 301

of MIL-STD-202. The applicable test voltage shall be as Specified in Table I. The test voltage

shall be applied between a conductive foil at circuit ground, that is wrapped around the resistor

body, and the lead wires electrically shorted together.

4.6.5 Insulation resistance (see 3.7). Resistors shall be tested in accordance with Method 302 of

MIL-STD-202 at Test Condition A.

4.6.6 Overload/overvoltage (see 3.8).

4.6.6.1 Tolerance codes D (0.5%) and F (1%). Resistors shall be subjected to 5 times rated

power (see 3.3.5) with applied voltage not to exceed 1.5 times maximum working

voltage (see 3.3.6) for 5 seconds. Refer to Table I for applicable power and voltage

ratings.

4.6.6.2 Tolerance codes B (0.1%) and C (0.25%). The load applied during

overload/overvoltage shall be 2 times rated power with applied voltage not to exceed 2

times maximum working voltage (see 3.3.6) for 5 seconds. Refer to Table I for

applicable power and voltage ratings.

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4.6.7 Voltage conditioning (see 3.9). Resistors may be mounted in any position in a chamber at a

controlled test ambient temperature of +125°C (±2°C). The load applied shall be the maximum

rated power (see 3.3.5) not to exceed maximum working voltage (see 3.3.6). The applied voltage

may be dc or rms ac and shall be cycled 90 minutes on, 30 minutes off for a duration of 100 hours

minimum. [Note that power and voltage ratings for tolerance codes D (0.5%) and F (1%) differ

from tolerance codes B (0.1%) and C (0.25%). Refer to Table I for the applicable ratings.]

4.6.8 Load life (see 3.10). Resistors may be mounted in any position in a chamber at a controlled test

ambient temperature of +125°C (±2°C). The load applied shall be the maximum rated power (see

3.3.5) not to exceed maximum working voltage (see 3.3.6) for a continuous duration of 1000

hours. DC resistance shall be measured and recorded prior to the beginning of the life test and at

100, 250, 500 and 1000 hours. The change in resistance at any interval shall not exceed the

requirement in Table IV. [Note that power and voltage ratings for tolerance codes D (0.5%) and

F (1%) differ from tolerance codes B (0.1%) and C (0.25%). Refer to Table I for the applicable

ratings.]

4.6.9 Resistance temperature characteristic (see 3.11). Resistors shall be tested in accordance with

Method 304 of MIL-STD-202 except as modified herein. The first series of standard test

temperatures shall be 25°C, 0°C, -15°C, and -55°C; the second series shall be 25°C, 50°C,

75°C, 105°C and 125°C.

4.6.10 Shock (see 3.12). Resistors shall be tested in accordance with Method 213 of MIL-STD-202 at

Test Condition I.

4.6.11 Vibration (see 3.13). Resistors shall be tested in accordance with Method 204 of MIL-STD-202

at Test Condition D.

4.6.12 Resistance to solvents (see 3.14). Resistors shall be tested in accordance with Method 215 of

MIL-STD-202.

4.6.13 Terminal strength (see 3.15). Resistors shall be tested in accordance with Method 211 of

MIL-STD-202 at Test Conditions A and D except as follows: the applicable applied force for Test

Condition A shall be 2.5 pounds.

4.6.14 Solderability (see 3.16). Resistors shall be tested in accordance with Method 208 of

MIL-STD-202.

4.6.15 Thermal outgassing (see 3.2.2). Resistors shall be tested in accordance with ASTM E595.

5. PACKAGING

5.1 Packaging requirements. The requirements for packaging shall be in accordance with MIL-R-

39032.

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6. NOTES

6.1 Style numbers. Style numbers correspond to Caddock's model numbers for Type MG or Type

HG (high reliability) precision high voltage resistors. Parts in this specification are recommended

replacements for either type since QCI combines the requirements in GSFC S-311-533 and those

imposed in Caddock Quality Control Procedure SP270-02.

6.2 Inductance considerations. All resistor styles provided to this specification are manufactured using

resistance patterns referred to by Caddock as the "non-inductive" construction which minimize the

inductance of the component. Users who consult Caddock's data sheets for this device type will

note that the commercial version of the smaller styles (650, 655, 660 and 680) may be supplied

with a "low-inductance" construction. However, all parts ordered per this S311 specification will

be manufactured using the "non-inductive" construction only. For further information, consult the

manufacturer's catalog or contact Caddock Electronics, Incorporated, 1717 Chicago Avenue,

Riverside, CA 92507-2364.

6.3 Ordering data. Acquisition documents should specify the following:

a. Number, title, and revision of this specification.

b. Goddard Part Number

c. Quantity

6.4 Qualification provisions. With respect to product requiring qualification, awards will be made only

for product which have been tested and approved by GSFC before the time for opening of bids.

The attention of the suppliers is called to the following requirement: manufacturers should arrange

to have qualification tests made on product which they propose to offer to GSFC to become

eligible for awards of contracts or orders for product covered by this specification. The

manufacturer shall bear the cost of qualification inspection to this specification. Information

pertaining to qualification of product may be obtained from the activity whose address is listed in

4.4.5.

6.5 NOTICE. When GSFC drawings, specifications, or other data are sent for any purpose other

than in connection with a definitely related GSFC procurement operation, the United States

Government thereby incurs no responsibility nor any obligation whatsoever. The fact that GSFC

might have formulated, furnished or in any way supplied the said drawings, specifications, or other

data is not to be regarded by implication or otherwise as in any manner licensing the holder or any

person or corporation, or conveying any right or permission to manufacture, use, or sell any

patented invention that may in any way be related thereto.

Custodian:

Goddard Space Flight Center

Greenbelt, MD 20771

Attn: Document Administrator Code 562

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