1202

Vishay Foil Resistors

Potentiometers, 1 1/4 Inch Rectilinear, RJ12 Style, Designed to

Meet or Exceed The Requirements of MIL-PRF-22097, Char. F

www.vishay.com

For any questions, contact: foil@vishay.com

Document Number: 63055

4

Revision: 13-Nov-07

Notes

1. Preferred Termination style for current 1-1/4 inch rectilinear

trimmers (staggered PC pins present a sturdier mounting

arrangement for shock, vibration, and impact situations).

2. 10 W at ± 5 % available on special order.

3. Maximum TCR applies to the 3

σ (sigma) limit or 99.73 % of a

production lot. (Measured end-to-end with wiper off the

element.)

4. Measurements of TCR through the wiper are influenced more

by setting stability and the percentage of the total resistance in

use (at the wiper) than by fundamental resistance change due

to temperature alone. The parameter shown in Table 3 is a 2

σ

distribution typifying the behavior of the device when used with

40 % or more of the total resistance in use.

5. Derated linearly from full power at + 85 °C to zero (0) W at

+ 150 °C. See Figure 3 in this data sheet.

6. All

ΔR’s are measured to the tolerance specified + 0.01 Ω.

7. Whichever is greater.

8. Load-Life test performed at nominal rated power, 0.5 W, at

+ 85 °C.

Special Available Options:

Special marking

Special lengths for lead wires (L, LB Style)

Hooked leads

Alternate bushing and PC combinations

Power conditioning and screening operations

VISHAY TRIMMERS ARE INSPECTED

100 % for:

• Short-time overload (6.25 x rated power for 5 s on; and for

30 s off - 3 cycles)

• Immersion

• Resistance tolerance check

• End resistance

• Visual-mechanical

• Dynamic tests for continuity, CRV

By Sample for:

•TCR

•DWV

TABLE 5 - COMPARISON

1202 MAXIMUM (Worst Case)

TEST GROUP I

Visual and mechanical

Total resistance

Actual effective electrical travel

End resistance

Contact resistance variation - CRV (noise)

Dielectric withstanding voltage - DWV

(atmospheric and barometric pressure)

Insulation resistance

Shaft torque

Thermal shock

No failures

± 10 %

17 to 27 turns

± 2 % or 20

± 3.0 % or 3

Per MIL-STD-202, methods 301 and 105

≥ 1000 MΩ

8 oz. in. maximum

± 1.0 %

No failures

± 10 %

25 ± 2 turns

2

Ω

3

Ω typical, 10 Ω maximum

Per MIL-STD-202, methods 301 and 105

≥ 1000 MΩ

8 oz. in. maximum

± 1.0 %

TEST GROUP II

Resistance temperature characteristic - TCR

Moisture resistance

Contact resistance variation - CRV (noise)

± 0.01 % (± 100 ppm/°C)

± 1.0 %

3.0 % or 3

± 0.001 % (± 10 ppm/°C)

± 0.5 %

3

Ω typical, 10 Ω maximum

TEST GROUP III

Shock (specified pulse)

Vibration (high-frequency)

Contact resistance variation - CRV (noise)

Salt spray

± 1.0 %

± 1.0 %

± 3.0 % or 3

No corrosion

± 0.5 %

± 0.5 %

3

Ω typical, 10 Ω maximum

No corrosion

TEST GROUP IV

Solder heat

Contact resistance variation - CRV (noise)

± 1.0 %

± 2.0 %

± 3.0 % or 3

± 0.05 %

± 0.5 %

3

Ω typical, 10 Ω maximum

TEST GROUP V

Low-temperature operation

High-temperature exposure

Contact resistance variation - CRV (noise)

± 1.0 %

± 2.0 %

± 3.0 % or 3

± 0.5 %

± 0.5 %

3

Ω typical, 10 Ω maximum

TEST GROUP VI

Rotational life

Contact resistance variation - CRV (noise)

Terminal strength

± 2.0 %

± 3.0 % or 3

2 lbs

± 2.0 %

3

Ω typical, 10 Ω maximum

2 lbs

TEST GROUP VII

Solderability (excluding termination L)

Immersion (excluding termination L)

MIL-STD-202 method 208

No continuous stream of bubbles

MIL-STD-202 method 208

No continuous stream of bubbles

TEST GROUP VIII

Fungus

MIL-STD-810 method 508

No mechanical damage

MIL-STD-810 method 508

No mechanical damage