Ohmite WH Series, WN Series Data Sheet

WH/WN Series

LD

0.984 /

25

d

Miniature Molded Wirewound

SERIES SPECIFICATIONS

Power Resistance
Rating Range Weight

Type (watts) (Ω) (g/1000pc)

WHA 0.5 0.100 - 1.0K 216
WNA 0.100 - 250

WHB 1 0.100 - 4.0K 296
WNB 0.100 - 1.0K

WHC 2 0.10 - 8.0K 712
WNC 0.10 - 2.0K

WHD 3 0.10 - 25K 1160
WND 0.10 - 5.0K

WHE 5 0.10 - 50K 2920
WNE 0.10 - 10K

FEATURES

• WHprecisionseries

• WNArytonPerrywindingNon-Inductiveseries:
Inductance<1nHat1MHZtest,

• DesignedtomeetMIL-R-26F,MIL-STD-202stan­dardrequirements

• Manufacturingprocess-Wirewinding/Spot
Welding-byComputerNumericalControl(CNC)
machinetoolstoensureconsistencyofproduct
quality.

• Encapsulatedbyepoxymoldingcompound

• AdvancedICencapsulationmold/dietechnologies

CHARACTERISTICS

Ceramic Core

End Caps

Leads

Resistance Wire ISAOHM

Encapsulation

Standard Tolerance

Temperature

Coefficient (ppm/°C)

Maximum Working

Voltage

Derating

Operating Temp

CeramTec Rubalit® 85% alumina

Stainless steel, precision formed

Copper wire,100% Sn (lead free)
coated

®

wire TC ±20ppm/°C

SUMICON 1100/1200 Epoxy molding
compound for IC encapsulation

D (0.5%), F (1.0%), J (5.0%)

±90 for 0.100Ω-0.99Ω, ±50 for

1.00Ω-10.00Ω, ±20 for >10.00Ω

1/2

(PxR)

Linearly from 100% @ +70°C to 0%
@ +150°C.

-55°C to +150°C

DIMENSIONS

Type Wattage L D d

WH/NA 0.5 5.08 / 0.200 2.54 / 0.100 0.60 / 0.024
WH/NB 1 7.00 / 0.276 3.30 / 0.130 0.60 / 0.024
WH/NC 2 11.4 / 0.450 4.57 / 0.180 0.80 / 0.031
WH/ND 3 13.54 / 0.530 5.50 / 0.216 0.80 / 0.031
WH/NE 5 20.00 / 0.790 7.50 / 0.295 1.00 / 0.039

100

Packaging

Tape Reel Pc/

Width Pitch Diam. reel

64 / 2.520 5.0 / 0.197 290 / 11.41 1000
64 / 2.520 5.0 / 0.197 290 / 11.41 1000
64 / 2.520 10 / 0.393 290 / 11.41 1000
84 / 3.307 10 / 0.393 290 / 11.41 500
84 / 3.307 10 / 0.393 290 / 11.41 500

(continued)

Series Ohms

Power

A = 0.5
B =1
C = 2
D = 3
E = 5

Tolerance

F = 1%
J = 5%
D = 0.5%

Package

T = Tape
blank = 25pc
pack

RoHS compliant

H = Inductive
N = Non Inductive

WH/WN Series

Miniature Molded Wirewound

PERFORMANCE CHARACTERISTICS

Test Conditions of Test Performance

Thermal shock

Short-time overload

Solderability

Resistance to solder

Dielectric withstanding

voltage

Insulation resistance

High Temperature

Exposure

Low Temperature

Storage

Environmental chamber, -55°C +0°C, -3°C to 150°C +3°C, -0°C,
5 cycles, minimum 15 min. at each extreme

Overload voltage 5x rated wattage for 5 sec. ±(0.5% + 0.5mΩ)ΔR

Bath temp. 260°C ±5°, immersion time 5 sec. ±0.5, JIS C 5201

4.18

Bath temp. 260°C ±5°, immersion time 5 sec. ±0.5, JIS C 5201

4.18

heat

Magnitude of test voltage >500 volts rms.; duration 1 min. Pass

Magnitude of test voltage 500 volts rms. ±10%; duration 1 min. >109Ω

Exposed to an ambient temperature of 175°C +5°/-0° for 250 ±8
hours

At a temperature of -65°C ±2° for a period of 24 hours ±4 ±(0.5% + 0.5mΩ)ΔR

Test temp. at 70°C ±2°, rated DC continuous working voltage

Life

applied, 1.5 hours on and 0.5 hours off, 1000 hours

±(1.0% + 0.5mΩ)ΔR

>90% of contact face
covered new solder

±(0.5% + 0.5mΩ)ΔR

±(1.0% + 0.5mΩ)ΔR

±(2.0% + 0.5mΩ)ΔR

HOW TO ORDER

Standard part numbers

Wattage: 0.5 0.5 1.0 1.0 2.0 2.0 3.0 3.0 5.0 5.0
Series: WHA WNA WHB WNB WHC WNC WHD WND WHE WNE

Ohms

0.1 WHAR10FE WNAR10FE WHBR10FE WNBR10FE WHCR10FE WNCR10FE WHDR10FE WNDR10FE WHER10FE WNER10FE

0.25 WHAR25FE WNAR25FE WHBR25FE WNBR25FE WHCR25FE WNCR25FE

0.5 WHAR50FE WNAR50FE WHBR50FE WNBR50FE WHCR50FE WNCR50FE WHDR50FE WNDR50FE WHER50FE WNER50FE

0.75 WHAR75FE WNAR75FE WHBR75FE WNBR75FE WHCR75FE WNCR75FE
1 WHA1R0FE WNA1R0FE WHB1R0FE WNB1R0FE WHC1R0FE WNC1R0FE WHD1R0FE WND1R0FE WHE1R0FE WNE1R0FE

2 WHA2R0FE WNA2R0FE WHB2R0FE WNB2R0FE WHC2R0FE WNC2R0FE
4 WHA4R0FE WNA4R0FE WHB4R0FE WNB4R0FE WHC4R0FE WNC4R0FE
5 WHA5R0FE WNA5R0FE WHB5R0FE WNB5R0FE WHC5R0FE WNC5R0FE WHD5R0FE WND5R0FE WHE5R0FE WNE5R0FE
10 WHA10RFE WNA10RFE WHB10RFE WNB10RFE WHC10RFE WNC10RFE WHD10RFE WND10RFE WHE10RFE WNE10RFE
15 WHA15RFE WNA15RFE WHB15RFE WNB15RFE WHC15RFE WNC15RFE WHD15RFE WND15RFE WHE15RFE WNE15RFE

25 WHA25RFE WNA25RFE WHB25RFE WNB25RFE WHC25RFE WNC25RFE
51 WHA51RFE WNA51RFE WHB51RFE WNB51RFE WHC51RFE WNC51RFE
75 WHA75RFE WNA75RFE WHB75RFE WNB75RFE WHC75RFE WNC75RFE
100 WHA100FE WNA100FE WHB100FE WNB100FE WHC100FE WNC100FE WHD100FE WND100FE WHE100FE WNE100FE
150 WHA150FE WNA150FE WHB150FE WNB150FE WHC150FE WNC150FE WHE150FE WNE150FE

200 WHA200FE WNA200FE WHB200FE WNB200FE WHC200FE WNC200FE
250 WHA250FE WNA250FE WHB250FE WNB250FE WHC250FE WNC250FE WHD250FE WND250FE WHE250FE WNE250FE
330 WHA330FE WHB330FE WNB330FE WHC330FE WNC330FE
470 WHA470FE WHB470FE WNB470FE WHC470FE WNC470FE
560 WHA560FE WHB560FE WNB560FE WHC560FE WNC560FE WHD560FE WND560FE WHE560FE WNE560FE

750 WHA750FE WHB750FE WNB750FE WHC750FE WNC750FE
1K WHA1K0FE WHB1K0FE WNB1K0FE WHC1K0FE WNC1K0FE WHD1K0FE WND1K0FE WHE1K0FE WNE1K0FE

2.5K WHB2K5FE WHC2K5FE WND2K5FE
5K WHD5K0FE WHE5K0FE WNE5K0FE
10K WHD10KFE WHE10KFE WNE10KFE

25K WHE25KFE

rev 8/19-1

101