Model 157

Bushing and Servo Mount Versions, Conductive Plastic

Vishay Spectrol

Document Number: 57042

For technical questions, contact: sfer@vishay.com

www.vishay.com

Revision: 18-Jun-07

17

SAP PART NUMBERING GUIDELINES

157

S

502

M

X

B10

MODEL

STYLE

OHMIC VALUE

TOLERANCE

LINEARITY

PACKAGING

ON OHMIC VALUE

502 = 5K

M: ± 20 %

X: ± 2 %

Box of 10 pieces

DIMENSIONS in inches (millimeters)

MATERIAL SPECIFICATIONS

Housing/Bushing

Aluminum, anodized

Rear Lid

Ceramic

Shaft

Stainless steel

Terminals

Solderable

Bushing Mount Hardware

Lockwasher, internal tooth steel, nickel plated

Panel Nut

Brass, nickel plated

BUSHING MOUNT: 157B...

0.455

(11.56)

± 0.015

0.062 (1.57)

0.062 (1.57)

Ø 0.1248

Ø 0.1245

(3.17)

0.062 (1.57)

0.500

(12.7)

Ø 0.750

(19.05)

Ø 0.070

(1.78)

Ø 0.050

(1.27)

RETAINER

Ø 0.20 MAX. x 0.02 MAX. (5.08)

Ø 0.7500 (19.05)

Ø 0.7495

12

3

157 - XXXX

XXX

Ω

± XX%

± XX%

XXXX

XXX Country

SERVO MOUNT: 157S...

0.875

(22.22)

± 0.031

Ø 0.2497

(6.34)

RETAINER: Ø 0.312 x 0.03 MAX.

0.345

(8.76)

± 0.015

0.125

(3.18)

± 0.010

Ø 0.9.52 x 1.57 WIDE

IMPERFECT

THREAD AREA

0.365

(9.27)

± 0.010

0.312

(7.92)

LOCATING PIN Ø

0.062 x 0.062

(1.57 x 1.57)

TERM 1

TERM 2

TERM 3

90°

Ø 0.875

(22.2)

0.176 TERMINAL

RADIUS (4.47)

MARKING

+ 0.0000

- 0.0003

TOLERANCES: UNLESS OTHERWISE NOTED.

DECIMALS ± 0.005 ANGLES ± 2°

CW

SCHEMATIC

2

3

1

± 0.031

ENVIRONMENTAL SPECIFICATIONS

Temperature

- 55 °C + 125 °C

Rotational Life

BUSHING

5 million shaft revolutions

SERVO

10 million shaft revolutions

Moisture Resistant

Yes

Vibration

15 g 10 to 2000 Hz

Shock

50 g

Salt Spray

96 h

Load Life

900 h