Y505150R0000J0L - Vishay Presicion Group

Bulk Metal

Foil Ultra High Technology Precision Trimming Potentiometers,

" Rectilinear, RJ12 Style, Designed to Meet or Exceed The Requirements

of MIL-PRF-22097, Char. F with Smooth and Unidirectional Output

Accutrim™ 1202

Vishay Foil Resistors

Document Number: 63055 For any questions, contact: foil@vishaypg.com www.foilresistors.com

Revision: 25-Mar-10 1

INTRODUCTION

Vishay Foil precision trimmers have the Bulk Metal® Foil

resistive element which possesses a unique inherent

temperature and load life stability. Plus, their advanced

virtually back lash-free adjustment mechanism makes them

easy to set quickly and accurately and keeps the setting

exactly on target.

FEATURES

•Temperature coefficient of resistance (TCR):

10 ppm/°C maximum (3)

(- 55 °C to + 150 °C ref. at + 25 °C);

through the wiper (4);

25 ppm/°C

•A smooth and unidirectional resistance with

leadscrew adjustment

•Load life stability: 0.1 % typical ΔR, 0.5 % maximum ΔR

under full rated power at + 85 °C for 2000 h

•Settability: 0.05 % typical; 0.1 % maximum

•Setting stability: 0.1 % typical; 0.5 % maximum, ΔSS

•Power rating: 0.5 W at + 85 °C

•Resistance range: 2 Ω to 20 kΩ

•“O“-ring prevents ingress of fluids during any board

cleaning operation

•Electrostatic discharge (ESD) up to 25 000 V

•Terminal finish: gold plated (tin/lead finish is available on

request)

Note

• See Figures 1 and 2

Note

• Refer to page 4 for footnotes

* Pb containing terminations are not RoHS compliant, exemptions may apply

CERMET

Wiper Travel

Resistance

Wiper Travel

Resistance

BULK METAL

FOIL WIREWOUND

Wiper Travel

Resistance

TABLE 1 - MODEL SELECTION

MODEL TERMINATION

STYLE

AVERAGE

WEIGHT

(g)

POWER

RATING

at + 85 °C

AMBIENT

NO. OF

TURNS

1202

P-In line PC pins 2.5

0.5 W 25 ± 2

Y-staggered PC pins

(1)

2.5

L-flexible wire leads 3.3

LB-flexible wire leads

with bushings 5.1

TABLE 2 - VALUES VS. TOLERANCES

STANDARD RESISTANCE

VALUES (in Ω)STANDARD TOLERANCES

2, 5, 10 ± 10 % (2), ± 20 %

20, 50, 100, 200, 250, 500,

1K, 2K, 5K, 10K, 20K 5 %, 10 %

TABLE 3 - 1202 (RJ12) SERIES ELECTRICAL SPECIFICATIONS

Temperature Coefficient of Resistance (TCR), 50 Ω and up

End-to-end (3) ± 10 ppm/°C maximum (- 55 °C to + 25 °C)

± 10 ppm/°C maximum (+ 25 °C to + 150 °C)

2 Ω, 5 Ω, 10 Ω, 20 Ω

Through the wiper (4) ± 20 ppm/°C (- 55 °C to + 150 °C, ref. + 25 °C)

± 25 ppm/°C (- 55 °C to + 150 °C, ref. + 25 °C)

Stability

Load life at 2000 h, under full rated power of 0.5 W at + 85 °C

Load life at 10 000 h, under full rated power of 0.5 W at + 85 °C

0.1 % typical ΔR; 0.5 % maximum ΔR

0.1 % typical ΔR; 1.0 % maximum ΔR

Power Rating (5) 0.5 W at + 85 °C

Settability

0.05 % typical; 0.1 % maximum

Setting Stability 0.1 % typical; 0.5 % maximum

Contact Resistance variation - CRV (noise) 3 Ω

typical;

10 Ω

maximum

Hop-off

0.25 % typical; 1.0 % maximum

High-Frequency Operation

Rise time

Inductance

Capacitance

to 100 MHz

10 ns at 1 kΩ

0.08 µH typical

0.5 pF typical

Operating Temperature Range - 55 °C to + 150 °C

Accutrim™ 1202

Vishay Foil Resistors

www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63055

2Revision: 25-Mar-10

TABLE 4 - MECHANICAL SPECIFICATIONS

Adjustment Turns 25 ± 2Case Material Glass fortified diallyl-phthalate (DAP); black

Mechanical Stops Wiper idles - no discontinuity Shaft Torque 8 oz. in. maximum; 3 oz. in. typical

Internal Terminations All welded - no flux Backlash 0.05 % typical

FIGURE 1 - SCHEMATIC AND DIMENSIONS in Inches (Millimeters)

TOLERANCES:

A = ± 0.005" (0.13 mm)

B = ± 0.003" (0.08 mm)

C = ± 0.010" (0.25 mm)

Note

(1) Pin leads are gold plated nickel which are solderable or weldable.

STANDARD MARKING ILLUSTRATION:

0.125"

(3.18 mm) A

0.070" (1.78 mm) C

0.700"

(17.78 mm) C

1.000" (25.40 mm) C

0.900" (22.86 mm) C

0.235"

(5.97 mm) C

0.260"

(6.60 mm) C

0.125" (3.18 mm) A

0.093" (2.36 mm) DIA (A)

2 Mtg. Holes

Slot 0.025" (0.64 mm) W x

0.031" (0.79 mm) DP (A)

Schematic

1.250" (31.75 mm) C

0.125"

(3.18 mm) DIA (A)

0.195"

(4.95 mm) A

0.325"

(8.26 mm) A

0.500"

(12.70 mm) C

0.028" (0.71 mm) DIA (B)

3 Pin Type Leads

1322

1202P

(In-Line Pins)

(1)

0.125"

(3.18 mm) A

0.070" (1.78 mm) C

0.300"

(7.62 mm) C

1.000" (25.40 mm) C

0.700" (17.78 mm) C

0.235"

(5.97 mm) C

0.265"

(6.73 mm) C

0.125" (3.18 mm) A

0.093" (2.36 mm) DIA (A)

2 Mtg. Holes

Slot 0.025" (0.64 mm) W x

0.031" (0.79 mm) DP (A)

Schematic

1.250" (31.75 mm) C

0.125"

(3.18 mm) DIA (A)

0.195"

(4.95 mm) A

0.325"

(8.26 mm) A

0.500"

(12.70 mm) C

0.028" (0.71 mm) DIA (B)

3 Pin Type Leads

0.100"

(2.54 mm) C

123

1202Y

(Staggered Pins) (1)

Model No., Resistance Value,

Tolerance, TCR

Schematic

Vishay Date Code

Accutrim™ 1202

Vishay Foil Resistors

Document Number: 63055 For any questions, contact: foil@vishaypg.com www.foilresistors.com

Revision: 25-Mar-10 3

FIGURE 2 - SCHEMATIC AND DIMENSIONS in Inches (Millimeters)

TOLERANCES:

A = ± 0.005" (0.13 mm)

B = ± 0.003" (0.08 mm)

C = ± 0.010" (0.25 mm)

Standard marking shown on previous page.

1.250" (31.75 mm) C

0.125"

(3.18 mm) DIA (A)

0.195"

(4.95 mm) A

0.325"

(8.26 mm) A

Schematic

RGY

3 Color Coded Leads—

# 30 AWG Teflon Coated

Insulated Stranded Wire

11.50" (292.10 mm)

Min. Length

0.125"

(3.18 mm) A

0.070" (1.78 mm) C

1.000" (25.40 mm) C

0.235"

(5.97 mm) C

0.125" (3.18 mm) A

0.093" (2.36 mm) DIA (A)

2 Mtg. Holes

Slot 0.025" (0.64 mm) W x

0.031" (0.79 mm) DP (A)

1202L

(Flexible Leads)

3 Color Coded Leads—

# 30 AWG Teflon Coated

Insulated Stranded Wire

11.50" (292.10 mm)

Min. Length

Schematic

RGY

0.125" (3.18 mm) C

0.042" (1.07 mm) B

1.000" (25.40 mm) C

0.325"

(8.26 mm) A

0.125" (3.18 mm) A

0.093" (2.36 mm) DIA (A)

2 Mtg. Holes

# 10 - 32 N.C. - 2

1.250" (31.75 mm) C

Rubber Gasket

Lockwasher

Hexnut

0.280" (7.11 mm) B

0.195"

(4.95 mm) A

0.400"

(10.16 mm) A

0.300"

(7.62 mm) A

0.235"

(5.97 mm) A

Slot:

0.025" (0.64 mm) W x

0.031" (0.79 mm) DP (A)

1202LB

(Panel Mounted)

FIGURE 3 - POWER DERATING CURVE

Ambient Temperature °C

+ 85 °C

+ 100

+ 75

+ 50

+ 25

Percent of Rated Power

- 75 + 150+ 125+ 100+ 75+ 50+ 250- 25- 50 + 175

Accutrim™ 1202

Vishay Foil Resistors

www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63055

4Revision: 25-Mar-10

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 Ω 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 power at

+ 150 °C. See Figure 3 in this datasheet.

(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:

•Immersion

• Resistance tolerance check

• End resistance

• Visual-mechanical

• Dynamic tests for continuity, CRV

By sample for:

•TCR

•DWV

TABLE 5 - COMPARISON

MIL-PRF-22097/2 CHARACTERISTIC F (7) 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

Per MIL-STD-202, methods 301 and 105

Atmospheric pressure

Barometric pressure

Insulation resistance

Shaft torque

Thermal shock

No failures

± 10 %

17 to 27 turns

± 2 % or 20 Ω (7)

± 3.0 % or 3 Ω (7)

900 VAC, 1 min

350 VAC, 1 min

≥ 1000 MΩ

8 oz. in. maximum

± 1.0 %

No failures

± 10 %

25 ± 2 turns

2 Ω

3 Ω typical, 10 Ω maximum

900 VAC, 1 min

350 VAC, 1 min

≥ 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 Ω (7)

± 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 %

± 3.0 % or 3 Ω (7)

No corrosion

± 0.5 %

3 Ω typical, 10 Ω maximum

No corrosion

TEST GROUP IV

Solder heat

Life (1000 h at + 85 °C) (8)

Contact resistance variation - CRV (noise)

± 1.0 %

± 2.0 %

± 3.0 % or 3 Ω (7)

± 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 Ω (7)

± 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 Ω (7)

2 lbs

± 2.0 %

3 Ω typical, 10 Ω maximum

2 lbs

TEST GROUP VII

Solderability (excluding terminations L and LB)

Immersion (excluding terminations L and LB)

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

Accutrim™ 1202

Vishay Foil Resistors

Document Number: 63055 For any questions, contact: foil@vishaypg.com www.foilresistors.com

Revision: 25-Mar-10 5

Circuit A is a conventional circuit employing a high value wire

wound trimmer (4) linearized by two padding resistors (1 and

2) for the purpose of trimming resistor (3) to within less than

100 ppm absolute resistance.

Circuit A

Circuit B uses only a low value infinite resolution Vishay

trimming potentiometer (5) to accomplish the same results.

Saving in cost and board space is achieved. A low value wire

wound trimmer cannot be used because of poor resolution.

Circuit B

Note

(1) For non-standard requests, please contact application engineering.

TABLE 6 - GLOBAL PART NUMBER INFORMATION

NEW GLOBAL PART NUMBER: Y5050500R000K0L (preferred part number format)

DENOTES PRECISION VALUE CHARACTERISTICS (1)

YR = Ω

K = kΩ

0 = gold plated termination (lead (Pb)-free)

1 to 999 = custom

PRODUCT CODE TOLERANCE PACKAGING

5050 = 1202L

0050 = 1202LB

0051 = 1202P

6050 = 1202PB

5051 = 1202Y

7050 = 1202YB

J= ± 5 %

K= ± 10 %

M= ± 20 %

L = foam/box pack

FOR EXAMPLE: ABOVE GLOBAL ORDER Y5050 500R000 K 0 L:

TYPE: 1202L

VALUE: 500.0 Ω

ABSOLUTE TOLERANCE: ± 10.0 %

TERMINATION: gold plated (lead (Pb)-free)

PACKAGING: foam/box pack

HISTORICAL PART NUMBER: 1202L 500R00 K B (will continue to be used)

1202L 500R00 K B

MODEL RESISTANCE VALUE TOLERANCE PACKAGING

1202L

1202LB

1202P

1202PB

1202Y

1202YB

500.0 ΩJ = ± 5 %

K= ± 10 %

M= ± 20 %

B = bulk pack

0505 0R00Y5 K00 L0

Vishay Precision Group

Document No.: 63999

Revision: 27-Apr-2011

www.vishaypg.com

Legal Disclaimer Notice

Disclaimer

Legal Disclaimer Notice

Disclaimer

Document No.: 63999

Revision: 27-Apr-2011

ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.

Vishay Precision Group, Inc., its afﬁliates, agents, and employees, and all persons acting on its or their

behalf (collectively, “Vishay Precision Group”), disclaim any and all liability for any errors, inaccuracies or

incompleteness contained herein or in any other disclosure relating to any product.

The product speciﬁcations do not expand or otherwise modify Vishay Precision Group’s terms and

conditions of purchase, including but not limited to, the warranty expressed therein.

Vishay Precision Group makes no warranty, representation or guarantee other than as set forth in the terms

and conditions of purchase. To the maximum extent permitted by applicable law, Vishay Precision

Group disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and

all liability, including without limitation special, consequential or incidental damages, and (iii) any and

all implied warranties, including warranties of ﬁtness for particular purpose, non-infringement and

merchantability.

Information provided in datasheets and/or speciﬁcations may vary from actual results in different

applications and performance may vary over time. Statements regarding the suitability of products for

certain types of applications are based on Vishay Precision Group’s knowledge of typical requirements that

are often placed on Vishay Precision Group products. It is the customer’s responsibility to validate that a

particular product with the properties described in the product speciﬁcation is suitable for use in a particular

application.

No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or

by any conduct of Vishay Precision Group.

The products shown herein are not designed for use in life-saving or life-sustaining applications unless

otherwise expressly indicated. Customers using or selling Vishay Precision Group products not expressly

indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay

Precision Group for any damages arising or resulting from such use or sale. Please contact authorized

Vishay Precision Group personnel to obtain written terms and conditions regarding products designed for

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Product names and markings noted herein may be trademarks of their respective owners.