W P R T 5 0 A B – 1 K 2 J B 1 6 8

OrderingProcedure

Example:WPRT50at1.2kilohms5%tolerancewithquickconnect“amp”tagterminalsandbracket,bulkpackedinaboxof168pieces–

Thepulseenergycapacitylimitsinthegraphbelowrelatetopulsesbelow100msdurationbasedonaninstantaneouswiretemperature

riseof750ºC.

Type

PowerRating

Configuration

Value(useIEC62code)

Tolerance(useIEC62code)

Packing

S

Solderedtagwithoutbracket

Figure 1

SB

Solderedtagwithbracket

SR

Solderedtagwithruggedbracket

Figure 2

A

Quickconnect“amp”tagwithoutbracket

Figure 3

AB

Quickconnect“amp”tagwithbracket

AR

Quickconnect“amp”tagwithruggedbracket

Figure 4

AT

ConfigurationAwithtightertoleranceterminalalignment

Figure 5

AD

ConfigurationABwithtightertoleranceterminalalignment

B440

Bulk

WPRT10

S/SB/A/AB/AT/AD

440/box

Standard

B330

SR/AR

330/box

B400

WPRT15

S/SB/A/AB/AT/AD

400/box

B300

SR/AR

300/box

B270

WPRT20

S/SB/A/AB/AT/AD

270/box

B270

SR/AR

270/box

B240

WPRT30/40/50

S/A/AT

240/box

B168

SB/AB/AD

168/box

B160

SR/AR

160/box

J

5%

PulsePerformance

ApplicationNotes

S,SRandSBconfigurationshaveterminalswhichcanbesoldered.However,forfullpoweroperation,duetothepossibilityofhighterminal

temperatures,itisrecommendedthattheconnectionsbesecuredmechanically,ratherthanrelyingonthesolderjointalone.

ATandADconfigurationsaredesignedforuseinmoldedhousingassemblies,wherethealignmentofterminalsandthebodydimensions

mustbedefinedtoagreatertolerance.

SRandARconfigurationshaveabracketwithtwofixingpointsratherthanone,andareidealforhighshock&vibrationapplications.

10W

15W

20W

40&50W

30W

WPRTSeriesEnergyCapabilityGraph

Resistancevalue(ohms)

Wirewound Power

Radial Terminal Resistor

WPRT Series

06.18

General Note

TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

© TT Electronics plc

www.ttelectronics.com/resistors

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