RC70LFC8M06DB - TT Electronics/IRC

General Note

IRC reserves the right to make changes in product speciﬁcation without notice or liability.

All information is subject to IRC’s own data and is considered accurate at time of going to print. A subsidiary of

TT electronics plc

• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

RC Series Issue November 2009 Sheet 1 of 3

Standard Values E24, E96 Preferred Any value to

order

Thermal Impedance °C/Watt 110 70 60

Ambient Temperature Range °C -55 to +155

RC Series

• Resistance tolerance down to ±0.05%

• Low noise and negligible voltage coefﬁcient

• CECC released product with low TCRs over a wide resistance range

• 100% tin plated (Pb-free, RoHS compliant) leads

Electrical Data

RC55 RC65 RC70 Notes

Commercial

Power Rating At 70°C Watts 0.25 0.5 1.0

Resistance Range Ohms 1R to 4M 1R to 4M 10R0 to 10M

Limiting Element Voltage Volts 350 350 500

Isolation Voltage Volts 500 500 700

TCR (20 to +70°C) & codes ppm/°C 5(V), 10(T), 15(Y), 25(D), 50(C) & 100(Z) See resistance

restrictions

Resistance Tolerance % 0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1 (F)

Approved CECC 40101-004 H J K K L

Power Rating At 70°C Watts 0.063 0.125 0.25 0.25 0.5

Resistance Range Ohms 1R to 1M 1R to 1M 1R to 1M 10R to 1M 10R to 1M

Limiting Element Voltage Volts 200 200 250 250 350

Isolation Voltage Volts 280 280 350 350 500

TCR & Codes ppm/°C 15(Y), 25(D), 50(C) & 100(Z) See resistance

restrictions

Resistance Tolerance (code) % 0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)

Approved CECC 40101-804 A B B C

Power Rating At 70°C Watts 0.125 0.25 0.25 0.5

Resistance Range Ohms 1R to 1M 1R to 1M 10R to 1M 10R to 1M

Limiting Element Voltage Volts 200 250 250 350

Isolation Voltage Volts 280 350 350 500

TCR & Codes ppm/°C 15(T), 25(E) & 50(C) See resistance

restrictions

Resistance Tolerance (code) % 0.05(W), 0.1(B), 0.25(C), 0.5(D) & 1(F)

Precision Metal Film Resistor

RC Series Issue November 2009 Sheet 2 of 3

• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

Precision Metal Film Resistor

Physical Data

Construction

A metal ﬁlm is deposited onto a high quality ceramic

former. Nickel-plated steel caps are force ﬁtted to the

former and termination wires are welded to the caps.

The resistor is adjusted to value by a helical cut in the ﬁlm

and the body is protected with a specially formulated epoxy

coating.

Terminations

Material 100% tin plated over copper wire

Strength The teminations meet the requirements of

IEC 68.2.21.

Solderability The terminations meet the requirements

of IEC 115-1, Clause 4.17.3.2.

Marking

dna eulav ecnatsiser ,edoc RCT ,ecnerefer epyT

tolerance code.

The resistance values conform to IEC 62.

Solvent Resistance

The body protection and marking are resistant

to all normal industrial cleaning solvents

suitable for printed circuits.

Dimensions (mm) & Weight (g)

Type L

Max

Min

Nom

PCB

Mounting

Centers

Min

Bend

Radius

Wt.

Nom

RC55 7.2 2.5 30 0.6 10.2 0.6 0.24

RC65 10.0 3.7 30 0.6 12.7 0.6 0.40

RC70 15.5 5.5 30 0.8 18.4 1.2 1.15

Environmental Data

CECC 40101-004 CECC 40101-804 *Actual Performance

Requirements Requirements Maximum Typical

Load At Commercial Rating: 1000 Hours At 70°C --- --- 0.3 0.1

Load At CECC Rating: 1000 Hours At 70°C 0.5 0.5 0.3 0.05

Dry Heat: 1000 Hours at 155°C 0.5 0.5 **1.0 0.15

Shelf Life: 12 Months at Room Temperature Not speciﬁed Not speciﬁed 0.1 0.03

Derating From Rated Power At 70°C Zero at 155°C 50% at 125°C --- ---

Short Term Overload 0.1 0.1 0.1 0.02

Climatic 0.5 0.5 0.3 0.1

Climatic Category 55/155/56 55/155/56 55/155/56 ---

Long Term Damp Heat 0.5 0.5 0.5 0.1

Temperature Rapid Change 0.1 0.1 **0.2 0.05

Resistance To Solder Heat 0.1 0.1 0.06 0.03

Vibration and Bump 0.1 0.1 0.06 0.02

Noise (in a decade of frequency) Not speciﬁed Not speciﬁed 1.0 0.1

Voltage Coefﬁcient Of Resistance Not speciﬁed Not speciﬁed --- <1

Note: *An 0.01 ohm addition to be added to the performance claims of all resistors <10R.

** All products within the speciﬁed approved range meet CECC requirements.

∆R%

µV/V

ppm/V

RC Series Issue November 2009 Sheet 3 of 3

• 4222 South Staples Street • Corpus Christi Texas 78411 USA

Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com

Precision Metal Film Resistor

Table of Resistance Restrictions

Tolerance

TCR

ppm/°C

RC55 RC65 RC70

0.05% 0.1 - 0.25% 0.5 - 1% 0.05% 0.1 - 0.25% 0.5 - 1% 0.05% 0.1 - 0.25% 0.5 - 1%

5 10 to 500K 10 to 500K 1 to 500K 10 to 500K 10 to 500K 1 to 500K 10 to 750K 10 to 750K 1 to 750K

10 10 to 1M 10 to 1M 1 to 1M 10 to 1M 10 to 1M 1 to 1M 10 to 1M 10 to 1M 1 to 1M

15 10 to 1M 5 to 1M 1 to 1M 10 to 1M 5 to 1M 1 to 1M 10 to 1M 10 to 2M 1 to 2M

25 10 to 1M 5 to 2M 1 to 2M 10 to 1M 5 to 2M 1 to 2M 10 to 1M 10 to 5M 1 to 5M

50 10 to 1M 5 to 2M 1 to 4M 10 to 1M 5 to 2M 1 to 4M 10 to 1M 5 to 10M 1 to 10M

100 10 to 1M 1 to 2M 1 to 4M 10 to 1M 1 to 2M 1 to 4M 10 to 1M 1 to 10M 1 to 10M

Application Notes

Matched Sets and Networks

Welwyn has many years experience in the supply of

matched set of precision resistors

Resistors can be supplied matched for tolerance

and TCR down to ±0.02% and ±2 ppm/°C, either as

separate resistors or pre-assembled and encapsulated

within a plastic box.

The individual resistors within a set or module can be

manufactured with a tolerance of ±0.05% and TCR of

±5 ppm/°C.

A low inductance version is available at 1% tolerance.

For low inductive version add sufﬁx N.

The standard method of packaging RC55 resistors

is taped in ammo packs. Taped resistors on reel or

loose packed components can also be supplied by

special request. The standard packaging for RC65

and RC70 resistors is loose in boxes. By special

request the RC65 components can also be supplied

taped on reel or in ammo pack. In the case of tape

packed components the usable lead length is re-

duced by the width of the tape.

Type RC55 RC65 RC70

Small box 250 125 25

Large box 1000 500 250

Reel 5000 2500 -

Large ammo 1000 1000 -

Standard Quantities Per Package

Packaging

Body location: f1 - f2 ≤ 1.4mm

Preﬁx RC - RC55LF C 6K8 B B

Type

RC55LF, RC65LF, RC70LF

TCR Code

V = ±5 ppm/°C, T = ±10 ppm/°C, Y = ±15 ppm/°C

D = ±25 ppm/°C, C = ±50 ppm/°C

Resistance Value

Ex: 6K8 = 6.8KΩ

Tolerance

F = ±1%, D = ±0.5%, C = ±0.25%, B = ± 0.1%, W = ±0.05%

Packaging

A = Ammo Pack; B = Bulk; T = Tape and Reel

For additional information or to discuss your speciﬁc requirements,

please contact our Applications Team using the contact details below.

Ordering Data