WH/WN Series
Miniature Molded Wirewound
F e at u r e S
• WH precision series
• WN Aryton Perry winding Non-Inductive series:
Inductance <1nH at 1MHZ test,
• Designed to meet MIL-R-26F, MIL-STD-202 stan-
dard 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
S e r i e S S P e c i F i c at i O N S
cHaracteriSticS
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
Ceramic Core
CeramTec Rubalit
®
85% alumina
End Caps
Stainless steel, precision formed
Leads
Copper wire,100% Sn (lead free)
coated
Resistance Wire
ISAOHM
®
wire TC ±20ppm/°C
Temperature
±90 for 0.100Ω-0.99Ω, ±50 for
Coefficient (ppm/°C)
1.00Ω-10.00Ω, ±20 for >10.00Ω
Maximum Working
(PxR)
1/2
Voltage
Standard Tolerance
D (0.5%), F (1.0%), J (5.0%)
Encapsulation
SUMICON 1100/1200 Epoxy molding
compound for IC encapsulation
Operating Temp
-55°C to +150°C
dimeNSiONS
0.984 /
25
L
D
d
Derating
Linearly from 100% @ +70°C to 0%
@ +150°C.
Packaging
Type
WH/NA
WH/NB
WH/NC
WH/ND
WH/NE
Wattage
L
0.5 5.08 / 0.200
1
7.00 / 0.276
2
11.4 / 0.450
3 13.54 / 0.530
5 20.00 / 0.790
D
2.54 / 0.100
3.30 / 0.130
4.57 / 0.180
5.50 / 0.216
7.50 / 0.295
d
0.60 / 0.024
0.60 / 0.024
0.80 / 0.031
0.80 / 0.031
1.00 / 0.039
Tape
Width
64 / 2.520
64 / 2.520
64 / 2.520
84 / 3.307
84 / 3.307
Pitch
5.0 / 0.197
5.0 / 0.197
10 / 0.393
10 / 0.393
10 / 0.393
Reel
Diam.
290 / 11.41
290 / 11.41
290 / 11.41
290 / 11.41
290 / 11.41
Pc/
reel
1000
1000
1000
500
500
(continued)
100
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
WH/WN Series
Miniature Molded Wirewound
PerFOrmaNce cHaracteriSticS
Test Conditions of Test
Performance
Short-time overload
Overload voltage 5x rated wattage for 5 sec.
Thermal shock
Environmental chamber, -55°C +0°C, -3°C to 150°C +3°C, -0°C, ±(1.0% + 0.5mΩ)ΔR
5 cycles, minimum 15 min. at each extreme
Solderability
Bath temp. 260°C ±5°, immersion time 5 sec. ±0.5, JIS C 5201
4.18
±(0.5% + 0.5mΩ)ΔR
>90% of contact face
covered new solder
±(0.5% + 0.5mΩ)ΔR
Pass
>10
9
Ω
Dielectric withstanding
Magnitude of test voltage >500 volts rms.; duration 1 min.
voltage
Resistance to solder
Bath temp. 260°C ±5°, immersion time 5 sec. ±0.5, JIS C 5201
heat
4.18
Insulation resistance
Magnitude of test voltage 500 volts rms. ±10%; duration 1 min.
High Temperature
Exposed to an ambient temperature of 175°C +5°/-0° for 250 ±8 ±(1.0% + 0.5mΩ)ΔR
Exposure
hours
Low Temperature
At a temperature of -65°C ±2° for a period of 24 hours ±4
Storage
±(0.5% + 0.5mΩ)ΔR
±(2.0% + 0.5mΩ)ΔR
Life
Test temp. at 70°C ±2°, rated DC continuous working voltage
applied, 1.5 hours on and 0.5 hours off, 1000 hours
HOW tO Order
H
= Inductive
N
= Non Inductive
RoHS compliant
Standard part numbers
Wattage:
0.5
Series: WHA
0.5
WNA
WNAR10FE
WNAR25FE
WNAR50FE
WNAR75FE
WNA1R0FE
WNA2R0FE
WNA4R0FE
WNA5R0FE
WNA10RFE
WNA15RFE
WNA25RFE
WNA51RFE
WNA75RFE
WNA100FE
WNA150FE
WNA200FE
WNA250FE
1.0
WHB
WHBR10FE
WHBR25FE
WHBR50FE
WHBR75FE
WHB1R0FE
WHB2R0FE
WHB4R0FE
WHB5R0FE
WHB10RFE
WHB15RFE
WHB25RFE
WHB51RFE
WHB75RFE
WHB100FE
WHB150FE
WHB200FE
WHB250FE
WHB330FE
WHB470FE
WHB560FE
1.0
WNB
WNBR10FE
WNBR25FE
WNBR50FE
WNBR75FE
WNB1R0FE
WNB2R0FE
WNB4R0FE
WNB5R0FE
WNB10RFE
WNB15RFE
WNB25RFE
WNB51RFE
WNB75RFE
WNB100FE
WNB150FE
WNB200FE
WNB250FE
WNB330FE
WNB470FE
WNB560FE
2.0
WHC
WHCR10FE
WHCR25FE
WHCR50FE
WHCR75FE
WHC1R0FE
WHC2R0FE
WHC4R0FE
WHC5R0FE
WHC10RFE
WHC15RFE
WHC25RFE
WHC51RFE
WHC75RFE
WHC100FE
WHC150FE
WHC200FE
WHC250FE
WHC330FE
WHC470FE
WHC560FE
2.0
WNC
3.0
WHD
3.0
WND
5.0
WHE
5.0
WNE
WNER10FE
WNER50FE
WNE1R0FE
Ohms
0.1
0.25
0.5
0.75
1
2
4
5
10
15
25
51
75
100
150
200
250
330
470
560
750
1K
2.5K
5K
10K
25K
WHAR10FE
WHAR25FE
WHAR50FE
WHAR75FE
WHA1R0FE
WHA2R0FE
WHA4R0FE
WHA5R0FE
WHA10RFE
WHA15RFE
WHA25RFE
WHA51RFE
WHA75RFE
WHA100FE
WHA150FE
WHA200FE
WHA250FE
WHA330FE
WHA470FE
WHA560FE
WHA750FE
WHA1K0FE
WNCR10FE WHDR10FE WNDR10FE WHER10FE
WNCR25FE
WNCR50FE WHDR50FE WNDR50FE WHER50FE
WNCR75FE
WNC1R0FE WHD1R0FE WND1R0FE WHE1R0FE
WNC2R0FE
WNC4R0FE
WNC5R0FE WHD5R0FE WND5R0FE WHE5R0FE
WNC10RFE WHD10RFE WND10RFE WHE10RFE
WNC15RFE WHD15RFE WND15RFE WHE15RFE
WNC25RFE
WNC51RFE
WNC75RFE
WNC100FE WHD100FE WND100FE
WNC150FE
WNC200FE
WNC250FE WHD250FE WND250FE
WNC330FE
WNC470FE
WNC560FE WHD560FE WND560FE
Series Power Ohms Tolerance Package
T = Tape
A = 0.5
F = 1%
blank = 25pc
B =1
J = 5%
pack
C=2
D = 0.5%
D=3
E=5
WNE5R0FE
WNE10RFE
WNE15RFE
WHE100FE
WNE100FE
WHE250FE
WHE560FE
WNE250FE
WNE560FE
WNE1K0FE
WNE5K0FE
WNE10KFE
WHB750FE WNB750FE WHC750FE WNC750FE
WHB1K0FE WNB1K0FE WHC1K0FE WNC1K0FE WHD1K0FE WND1K0FE WHE1K0FE
WHB2K5FE
WHC2K5FE
WND2K5FE
WHD5K0FE
WHE5K0FE
WHD10KFE
WHE10KFE
WHE25KFE
rev 2/18-1
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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