Datasheet > UNR2-T22177.7OHMS0.5%3PPM

UNR2-T22177.7OHMS0.5%3PPM

更新时间： 2024-11-17 04:41:31

品牌	Logo	应用领域
威世 - VISHAY		/
页数	文件大小	规格书
4页	887K
描述
Fixed Resistor, Metal Foil, 10W, 77.7ohm, 0.5% +/-Tol, -3,3ppm/Cel, 4016

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USR UNR USS UNS T220 T221

Powertron

•ꢀ Resistances from 0.5Ohm to 150kOhms

•ꢀ Power Rating to 10Watt

•ꢀ Resistance Tolerances to ±0.01%

•ꢀ TCR to ±3ppm/K

•ꢀ Load Stability to 0.01%

•ꢀ TO-220 Housing

•ꢀ Convenient SMD D2Pak Available

SPECIFICATIONS

Type

USR / USS

UNR /UNS

Resistance Range

0.5 Ohms to 150 kOhms

0.5 Ohms to 5 kOhms

Power rating

free air 70°C (R<50R0)

1.5W

1.0W

10W

1.5W

1.0W

15W

10W

free air 70°C (R>50R0)

with heatsink (R<50R0)

with heatsink (R>50R0)

Thermal Resistance Rthj-c

R<50R0

10.8 K/W

18.8 K/W

6.8 K/W

10.8 K/W

R>50R0

Tolerances

from 0.5 Ohms

from 10.0 Ohms

from 25.0 Ohms

from 50.0 Ohms

0.1% / 0.25% / 0.5% / 1%

0.05% / 0.1% / 0.25% / 0.5% / 1%

0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1%

0.01% / 0.02% / 0.05% / 0.1% / 0.25% / 0.5% / 1%

Stability

0.01%

Shelf Life Stability

25ppm / ∆R after 1 year

50ppm / ∆R after 3 year

Temperature Coefﬁcient

max. ±5ppm/K (-55 to 155°C)

typ. ±3ppm/K (-55 to 125°C)

Voltage Proof

Thermal EMF

Operating Temperature Range

Resistor Material

Substrate

1 kVDC

< 0.1µV/K

-55 to 155°C

NiCr-Foil

Al₂O₃

AlN

Housing

Epoxy + Cu heatsink nickel plated

Connector Material

Terminals

Cu tinned

Max. Torque

1.0 Nm

Notes

Specially designed for applications with fast

changing electrical load

Ordering Information

Part Number - Resistance - Contact - Tolerance - TCR

UNR 2-T220B 5.7kOhms C 0.5% 3ppm

Document Number: 64222

Revision: 20-09-10

For technical questions, contact: powertron@vishaypg.com

www.powertron.de

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