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1

FNP Series

For any questions, contact

sales-alpha@alpha-elec.co.jp

12600-EN

Rev 26-Feb-2021

High Power Precision Shunt Resistor, Up to 500W

High Power Precision Shunt Resistor, Up to 500W

12600-EN

Rev 26-Feb-2021

FNP Series

FEATURES

•

Temperature coefficient of resistance (TCR)

+25°C to +60°C, +25°C ref.: 0 ±1 ppm/°C

–25°C to +125°C, +25°C ref.: 0 ±5 ppm/°C

• Utilizing Ni-Cr Bulk Metal® Foil Technology for realizing

low TCR

• Low thermal resistance with Copper plate

Œ Improved to 0.1°C/W from 0.3°C/W (conventional

model)

ΠMaximum rated power up to 500W on heat sink

• Extended max. ambient temperature to 125°C

(85°C with conventional model)

• Built-in Pt100 sensor monitor temperature of resistive

element

ΠEasily define size of suitable heat sink

ΠAs safety function for continuous operation

APPLICATIONS

• Output reference of precision power supply

• Reference of charge-discharge test for high capacity

batteries

COMPOSITION OF TYPE NUMBER

FNP Z R0100 B

Resistance Value*

Type

Example:

TCR

Tolerance

* R is a dual-purpose letter that designates both the value

range (R for ohmic) and the location of decimal point.

TCR—RESISTANCE VS. TOLERANCE

Tolerance of Built-in Pt100 Sensor:

±[0.8 + 0.008(t)]°C

TCR

(ppm/°C)

Resistance

Range

(Ω)

Tolerance

(%)

Rated

Power

(W)

0 ±1 (Z)

0 ±2.5 (Y)

(+25°C to +60°C)

0 ±5 (X)

(–25°C to +125°C)

0.001 to 10**

±0.05 (A)

±0.1 (B)

±0.5 (D)

±1.0 (F)

500

(on heat

sink*)

* Keep temperature of element surface less than 125°C.

** Please contact us for higher resistance value

Made in

Japan

CONTRUCTION OF MATERIALS

• Base plate: Nickel-plated Copper

• Current terminal: Nickel-plated Copper (T = 1.0 mm)

• Voltage and Pt terminals: Nickel-plated Copper

(T = 0.5 mm)

• Package: PPS Injection-molded case

CONFIGURATION—Dimensions in mm

hexagonal nut

M6

C1

C2

V1 V2

20.0

7.5

5.5

25.0

15.0

4 5.5

55.0

8.0

2.8

CAUTION

— tighten screws at

• current terminals: <5.2N

⋅ m

• voltage terminals: <0.0195N

⋅ m