4
4-139 Models 664, 667, 668
ELECTRICAL
Operating Temperature Range -55°C to +125°C
Resistance Voltco ≈0
Interlead Capacitance <2pF
Operating Voltage, Maximum 100Vdc or √PR
Insulation Resistance ≥10,000 Megohms
Noise, Maximum (MIL-STD-202, Method 308) -40dB
MODELS
664, 667, 668
.150” Dual In-Line
Precision Thin Film
Surface Mount
Resistor Networks
MECHANICAL
Lead Plating 85/15 Tin Lead
Lead Material Copper Alloy
Lead Configuration Gull Wing
Lead Coplanarity 0.004” (0.102mm)
Substrate Material Alumina
Resistor Material Nichrome
Body Material Molded Epoxy
Specifications subject to change without notice.
FEATURES
•Unique passivation coating eliminates moisture concerns and allows for use in applications traditionally
restricted to tantalum nitride
• Outperforms other thin film resistor materials providing excellent tolerances, ratio matching,
temperature coefficient, and temperature tracking
• Improved performance over silicon substrates in stray capacitance, frequency response and stability
4-140 Models 664, 667, 668
ENVIRONMENTAL
Thermal Shock plus Power Conditioning ∆R 0.25%
Low Temperature Operation ∆R 0.10%
Short Time Overload ∆R 0.10%
Terminal Strength ∆R 0.10%
Moisture Resistance ∆R 0.20%
Mechanical Shock ∆R 0.25%
Vibration ∆R 0.25%
Low Temperature Storage ∆R 0.10%
High Temperature Exposure ∆R 0.10%
Load Life, 1,000 Hours ∆R 0.10%
Resistance to Solder Heat ∆R 0.10%
Dielectric Withstanding Voltage 100V for 1 minute
Temperature Exposure, Maximum 215°C for 3 minutes
Marking Permanency MIL-STD-202, Method 215
Lead Solderability MIL-STD-202, Method 208
Flammability UL-94V-O Rated
Storage temperature range -65°C to +125°C
1
8
664A
Isolated Resistors
1
N
N/2
667A/668A
Isolated Resistors
1
N
N/2
667B/668B
Bussed Resistors
SCHEMATICS
Note: Model 667: N = 14 Leads, Model 668: N = 16 Leads.
Custom circuits are available. Consult factory.
TOLERANCES
Accuracy Code *A B D F
Absolute Resistance Tolerances, at 25°C 0.1% 0.1% 0.5% 1.0%
Ratio Matching (Matched to R1) 0.05% 0.1% 0.1% 0.5%
Temperature Coefficient of Resistance ±25ppm/°C
Temperature Coefficient of Resistance, Tracking ±5ppm/°C
* Code ‘A’ Accuracy available as standard only for Model 664; other models by special order only.
4-141 Models 664, 667, 668
.196
4.98 Max.Model 664
.344
8.74 Max.Model 667
.393
9.98 Max.Model 668
.068
1.73 Max.
.007 ± .003
0.178 ± 0.08
Seating Plane
.157
3.99
.0165 ± .003
0.419 ± 0.08 Typ.
.050
1.27 Typ.
Typ.
.008
0.20
+.002
–.001
+0.05
–0.02
Typ.
.025 ± .010
0.64 ± 0.25 .239 ± .006
6.07 ± 0.15
0° To 8°
OUTLINE DIMENSIONS (Inch/mm)
4
STANDARD RESISTANCE VALUES, OHMS
664A: Ohms 1K 2K 5K 10K 47K 50K 100K
Code 1001 2001 5001 1002 4702 5002 1003
667A,668A*: Ohms 1K 2K 5K 10K 20K 47K 50K 100K
Code 1001 2001 5001 1002 2002 4702 5002 1003
667B, 668B: Ohms 10K 20K
Code 1002 2002
* Code “A” accuracy available as standard for Model 664 only. Other models by special order only.
Note: Leads are within .005/0.13 of true position.
Maximum allowable mold excursion = 0.006"
Lot Number Date Code
5358
664 Back
Logo
Logo
664-
Model Series
Accuracy Code
Lead #1 Indicator
Resistance Code
Circuit Type
Circuit Type
664 Front
A-1003A
Lot Number
Date Code
5358
667/668 Back
668
Model Series
Accuracy Code
Lead #1
Indicator
Resistance Code
667/668 Front
-A-1003A
TYPICAL PART MARKING
4-142 Models 664, 667, 668
POWER DISSIPATION, (WATTS) AT 70°C
Model Package Resistor
664 0.4 0.1
667/668 0.5 0.1
POWER DERATING CURVE
Percent of
Rated Power
100
80
60
40
20
0
15012570-0
Degrees C
SOLDER PAD LAYOUT
664
667
668
.025
0.64
.080
2.03
.140
3.56
.050
1.27 Typ.
.300
7.62
4
4-143 Models 664, 667, 668
Standard: Magazines
All units oriented with lead #1 to the same side.
Magazine: Capacity 664 = 100
667/668 = 50
Option: Embossed Tape & Reel (per EIA 481).
Reel: Diameter: = 7” Reel 13” Reel
Capacity: 664: = 1,000 Units 2,500 Units
667/668: = 500 Units 2,500 Units
PACKAGING
ORDERING INFORMATION
66 4 A 1001 A 7
Model Series Packaging Option:
7 = 7" Reel Diameter
13 = 13" Reel Diameter
(No code used for Magazines.)
Accuracy Code: (Resistance Tol./Ratio)
A = 0.1%/0.05%
B = 0.1%/0.1%
D = 0.5%/0.1%
F = 1.0%/0.5%
Number of Leads:
4 = 8 Leads
7 = 14 Leads
8 = 16 Leads
Circuit Type:
A = Isolated
B = Bussed
Resistance Code:
First 3 digits are significant.
Last digit denotes the number of trailing zeros.
