WH/WN Series
Miniature Molded Wirewound
PꢀꢁFOꢁmaNcꢀ cHaꢁactꢀꢁꢂStꢂcS
Test Conditions of Test
Performance
Environmental chamber, -55°C +0°C, -3°C to 150°C +3°C, -0°C, ±(1.0% + 0.5mΩ)ΔR
Thermal shock
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 >90% of contact face
4.18 covered new solder
Short-time overload
Solderability
Bath temp. 260°C ±5°, immersion time 5 sec. ±0.5, JIS C 5201 ±(0.5% + 0.5mΩ)ΔR
4.18
Resistance to solder
heat
Magnitude of test voltage >500 volts rms.; duration 1 min.
Pass
Dielectric withstanding
voltage
Magnitude of test voltage 500 volts rms. ±10%; duration 1 min. >109Ω
Insulation resistance
Exposed to an ambient temperature of 175°C +5°/-0° for 250 ±8 ±(1.0% + 0.5mΩ)ΔR
hours
High Temperature
Exposure
At a temperature of -65°C ±2° for a period of 24 hours ±4
±(0.5% + 0.5mΩ)ΔR
±(2.0% + 0.5mΩ)ΔR
Low Temperature
Storage
Test temp. at 70°C ±2°, rated DC continuous working voltage
applied, 1.5 hours on and 0.5 hours off, 1000 hours
Life
HOW tO Oꢁdꢀꢁ
H = Inductive
N = Non Inductive
Standard part numbers
RoHS compliant
Wattage: 0.5
Series: WHA
0.5
WNA
1.0
WHB
1.0
WNB
2.0
WHC
2.0
WNC
3.0
WHD
3.0
WND
5.0
WHE
5.0
WNE
Ohms
Series Power Ohms Tolerance Package
T = Tape
blank = 25pc
pack
A = 0.5
B =1
C = 2
D = 3
E = 5
F = 1%
J = 5%
D = 0.5%
0.1
0.25 WHAR25FE WNAR25FE WHBR25FE WNBR25FE WHCR25FE WNCR25FE
0.5 WHAR50FE WNAR50FE WHBR50FE WNBR50FE WHCR50FE WNCR50FE WHDR50FE WNDR50FE WHER50FE WNER50FE
WHAR10FE WNAR10FE WHBR10FE WNBR10FE WHCR10FE WNCR10FE WHDR10FE WNDR10FE WHER10FE WNER10FE
0.75 WHAR75FE WNAR75FE WHBR75FE WNBR75FE WHCR75FE WNCR75FE
Part marking:
1
WHA1R0FE WNA1R0FE WHB1R0FE WNB1R0FE WHC1R0FE WNC1R0FE WHD1R0FE WND1R0FE WHE1R0FE WNE1R0FE
0.50, 1.0, 2.0 watt parts
marked with 5-band color code,
3.0 and 5.0 watt parts marked
with part number stamping
2
WHA2R0FE WNA2R0FE WHB2R0FE WNB2R0FE WHC2R0FE WNC2R0FE
4
WHA4R0FE WNA4R0FE WHB4R0FE WNB4R0FE WHC4R0FE WNC4R0FE
5
10
15
WHA5R0FE WNA5R0FE WHB5R0FE WNB5R0FE WHC5R0FE WNC5R0FE WHD5R0FE WND5R0FE WHE5R0FE WNE5R0FE
WHA10RFE WNA10RFE WHB10RFE WNB10RFE WHC10RFE WNC10RFE WHD10RFE WND10RFE WHE10RFE WNE10RFE
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
150
WHA100FE WNA100FE WHB100FE WNB100FE WHC100FE WNC100FE WHD100FE WND100FE WHE100FE WNE100FE
WHA150FE WNA150FE WHB150FE WNB150FE WHC150FE WNC150FE
200
250
330
470
560
WHA200FE WNA200FE WHB200FE WNB200FE WHC200FE WNC200FE
WHA250FE WNA250FE WHB250FE WNB250FE WHC250FE WNC250FE WHD250FE WND250FE WHE250FE WNE250FE
WHA330FE
WHA470FE
WHA560FE
WHB330FE WNB330FE WHC330FE WNC330FE
WHB470FE WNB470FE WHC470FE WNC470FE
WHB560FE WNB560FE WHC560FE WNC560FE WHD560FE WND560FE WHE560FE WNE560FE
750
1K
2.5K
5K
10K
WHA750FE
WHA1K0FE
WHB750FE WNB750FE WHC750FE WNC750FE
WHB1K0FE WNB1K0FE WHC1K0FE WNC1K0FE WHD1K0FE WND1K0FE WHE1K0FE WNE1K0FE
WHB2K5FE
WHC2K5FE
WND2K5FE
WHD5K0FE
WHD10KFE
WHE5K0FE WNE5K0FE
WHE10KFE WNE10KFE
25K
WHE25KFE
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
102
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