SFN

www.vishay.com

Vishay Electro-Films

Revision: 11-Sep-13

1

Document Number: 61025

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

NiCr Thin Film, Top-Contact Resistor

Product may not be to scale

The SFN series resistor chips offer a combination of

nichrome stability, good power rating and small size.



The SFNs are manufactured using Vishay Electro-Films (EFI)

sophisticated thin film equipment and manufacturing

technology. The SFNs are 100 % electrically tested and

visually inspected to MIL-STD-883, method 2032, class H or

class K.

FEATURES

• Wire bondable

• Chip size: 20 inches square

• Case: 0202

• Resistance range: 10

 to 510 k

• Resistor material: Nichrome

• Oxidized silicon substrate

• 125 mW power

• Material categorization: For definitions of compliance

APPLICATIONS

Vishay EFI SFN resistor chips are widely used in hybrid

packages where space is limited. Designed with capacity to

handle substantial power loads, they also have the benefit of

nichrome stability.

Recommended for hermetic environments where die is not

exposed to moisture.

TEMPERATURE COEFFICIENT OF RESISTANCE, VALUES, AND TOLERANCES

PARAMETER

VALUE

UNIT

Total Resistance Range

20 to 510K



Standard Tolerances

± 0.1

%

TCR

± 10, ± 25, ± 50, ± 100

ppm/°C

STANDARD ELECTRICAL SPECIFICATIONS

PARAMETER

VALUE

UNIT

Noise, MIL-STD-202, Method 308



100

 to 250 k

< 100

 or > 251 k

-35 typ.

-20 typ.

dB

Stability, 1000 h, +125 °C, 50 mW

± 0.25 max.

R/R

%

Operating Temperature Range

-55 to +125

°C

Thermal Shock, MIL-STD-202, Method 107, Test Condition F

± 0.25 max.

R/R

%

High Temperature Exposure, +150 °C, 100 h

± 0.5 max.

R/R

%

Dielectric Voltage Breakdown

200

V

Insulation Resistance



Operating Voltage

100 max.

V

DC Power Rating at +70 °C (Derated to Zero at +175 °C)

0.125

W

5 x Rated Power Short-Time Overload, +25 °C, 5 s

± 0.25 max.

R/R

%

20

Ω

1 k

Ω

0.1 %

Tightest Standard Tolerance Available

± 25 ppm/°C

± 100 ppm/°C

± 50 ppm/°C

± 10 ppm/°C

50

Ω 100 Ω

510 k

Ω