VPR221Z (Z-Foil)

Configuration with TCR of ± 0.05 ppm/°C, PCR of

4 ppm/W and Load Life Stability of ± 0.005 % (50 ppm)

www.vishay.com

For any questions, contact: foil@vishay.com

Document Number: 63116

2

Revision: 16-Jul-07

A surface mount version of this product is available see data sheets for VPR220S, VPR221S

Notes

1. Maximum is 1.0 % A.Q.L. standard for all specifications except

TCR.

2. Whichever is lower.

3. Heat

sink

chassis

dimensions

are

requirements

per

MIL-R-39009/1B:

4. Inductance (L) mainly due to the leads.

5. The resolution limit of existing test requirement (within the

measurement capability of the equipment, “essentially zero”).

6. µV/°C relates to EMF due to lead temperature difference.

FIGURE 2 - TRIMMING TO VALUES

(Conceptual Illustration)

Mutual Inductance

Reduction due

to Change in

Current Direction

Current Path

Before Trimming

Note: Foil shown in black, etched spaces in white

Interloop Capacitance

Reduction in Series

Trimming Process

Removes this Material

from Shorting Strip Area

Changing Current Path

and Increasing

Resistance

Current Path

After Trimming

FIGURE 3 - TYPICAL TCR CURVE Z-FOIL

(for more details see table 1)

+ 500

+ 200

+ 100

0

- 100

- 200

- 300

- 500

- 55

- 25

+ 25

+ 60

+ 75

+ 100

+ 125

Ambient Temperature (°C)

ΔR

R

(ppm)

0

0.05 ppm/°C

- 0.1 ppm/°C

0.1 ppm/°C

0.14 ppm/°C

0.2 ppm/°C

- 0.16 ppm/°C

- 400

+ 300

+ 400

FIGURE 4 - VPR221Z DIMENSIONS in inches (millimeters)

TABLE 2 - SPECIFICATIONS

Power Rating at + 25 °C

1.5 W in free air

Further derating not necessary.

Current Noise

< 0.010 µV (rms)/V of applied voltage (- 40 dB)

High Frequency Operation

Rise Time

Capacitance (C)

0.2 ns at 1 W

< 0.1 ppm/V

Operating Temperature Range

- 55 °C to + 150 °C

Maximum Working Voltage

300 V, Not to exceed power rating

0.15 µV/°C maximum (lead effect)

Weight

1.2 g maximum

E

2

0.050 ± 0.005

(1.27 ± 0.13)

0.150 ± 0.008

(3.81 ± 0.20)

0.615 Max

(15.62)

0.078 ± 0.005

(1.98 ± 0.13)

0.015 ± 0.002

(0.38 ± 0.05)

0.030 ± 0.002

(0.76 ± 0.05)

0.100 ± 0.005

(2.54 ± 0.13)

0.400 ± 0.010

(10.16 ± 0.25)

VISHAY

VPR221Z

1R0 1 %

0101

0.245 ± 0.010

(6.22 ± 0.25)

0.141 ± 0.005 Dia

(3.58 ± 0.13)

0.540 ± 0.040

(13.72 ± 1.02)

0.115 ± 0.005

(2.92 ± 0.13)

0.050 ± 0.005

(1.27 ± 0.13)

0.200 ± 0.030

(5.08 ± 0.76)

E

1

I

2

I

1

DIMENSIONS

inches

mm

L

6.00

152.4

W

4.00

101.6

H

2.00

50.8

T

0.04

1.0