VPR220SZ (Z-Foil)

Vishay Foil Resistors

Ultra High Precision Z-Foil Surface Mount Power Resistors in

TO-220 Configuration with TCR of ± 0.05 ppm/°C,

Tolerance to ± 0.01 % and Power Rating to 8 W

www.vishay.com

For any questions, contact: foil@vishay.com

Document Number: 63068

1

Revision: 06-Aug-07

Any value at any tolerance available within resistance range

offers very low TCR, high stability, tight tolerance, low PCR

and fast response time in a small surface mount molded

resistor.

The Z-Foil technology provides a significant reduction of the

resistive components sensitivity to ambient temperature

variations and applied power changes. Designers now can

guarantee a high degree of stability and accuracy in fixed

resistor applications using solutions based on Vishay’s

revolutionary Z-Foil technology.

Our Application Engineering Department is available to

advise and make recommendations. For non-standard

technical requirements and special applications, please

contact us.

FEATURES

• Temperature Coefficient of Resistance (TCR):

± 0.05 ppm/°C typical (0 °C to + 60 °C)

± 0.2 ppm/°C typical (- 55 °C to + 125 °C,

- 25 °C Ref.)

• Tolerance: to ± 0.01 %

• Power Coefficient of Resistance (PCR) “ΔR

due to self heating”: 5 ppm at rated power

• Electrostatic Discharge (ESD) above 25 000 V

• Load Life Stability: ± 0.005 % (25 °C, 2000 hours at Rated

Power)

• Resistance Range: 5 Ω to 10 kΩ

• Power Rating: 8 W chassis mounted (per MIL-PRF-39009)

• Non Inductive, Non Capacitive Design

• Current Noise: < - 40 dB

• Voltage Coefficient: < 0.1 ppm/W

• Non Inductive: < 0.08 µH

• Non Hot Spot Design

• Thermal EMF: 0.05 µV/°C typical

• Terminal Finishes Available: Lead (Pb)-free

Tin/Lead Alloy

• For higher performances please contact us

Notes

1. Whichever is lower.

2. Heat sink chassis dimensions and requirements per

MIL-PRF-39009:

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

4. The resolution limit of existing test equipment (within the

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

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

Weight = 1 g Maximum

Note

1. Maximum specifications.

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

Available

Pb-free

RoHS*

COMPLIANT

TABLE 1 - SPECIFICATIONS

Load Life Stability at 2000 h

± 0.05 % max

ΔR under full rated

power at + 25 °C

Power Rating at + 25 °C

Further derating not necessary.

Current Noise

< 0.010 µV (rms)/V of applied

voltage (- 40 dB)

High Frequency Operation

Rise Time

Capacitance (C)

1 ns

0.1 µH maximum: 0.03 µH typical

1.0 pF maximum: 0.5 pF typical

< 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)

DIMENSION

INCHES

mm

L

6.00

152.4

W

4.00

101.6

H

2.00

50.8

T

0.04

1.0

TABLE 2 - VPR220SZ

RESISTANCE RANGE (

Ω)

TIGHTEST RESISTANCE TOLERANCE

- 55 °C to + 125 °C, Ref. + 25 °C

50 to 10K

± 0.01 %

± 2.5 ppm/°C

25 to < 50

± 0.02 %

10 to < 25

± 0.05 %

5 to < 10

± 0.1 %