WHEN YOU NEED THE HIGHEST
QUALITY WIREWOUND AXIAL TERMI -
NAL RESISTORS AVAILABLE, CHOOSE
OHMITE’S 90 SERIES RESISTORS.
THEY ARE MANUFACTURED BY
A UNIQUE PROCESS THAT MOLDS
THE VITREOUS ENAMEL OVER THE
RESISTIVE ELEMENT, HELPING TO
ENSURE CONSISTENT DIMENSIONS.
THIS UNIFORMITY PERMITS 90
SERIES RESISTORS TO BE MOUNTED
IN CLIPS, CREATING A HEAT-SINKING
BENEFIT (SEE NEXT PAGE).
THE DURABLE VITREOUS ENAM -
EL COATING, WHICH IS TOTALLY LEAD
FREE, PERMITS THE 90 SERIES
RESISTORS TO MAINTAIN A HARD
COATING WHILE OPERATING AT HIGH
TEMPERATURES. MECHANICAL
INTEGRITY IS ENHANCED BY THE
ALL-WELDED CONSTRUCTION.
FEATURES
? MOLDED CONSTRUCTION PROVIDES
CONSISTENT SHAPE AND SIZE
(PERMITS MOUNTING IN CLIPS WHICH
EXTENDS POWER RATING).
? MEETS MIL-R-26 REQUIREMENTS
FOR INSULATED RESISTORS.
? ALL-WELDED CONSTRUCTION.
? FLAME RESISTANT LEAD FREE VITRE -
OUS ENAMEL COATING.
? HIGHER RATINGS IN SMALLER SIZES.
? HEAT SINK MOUNTING CLIPS AVAIL -
ABLE.
? ROHS COMPLIANT; ADD “E” SUFFIX
TO PART NUMBER TO SPECIFY.
SPECIFICATIONS
Material
Coating: MOLDED LEAD FREE VITRE -
OUS ENAMEL.
Core: CERAMIC.
Terminals: SOLDER-COATED COPPER
CLAD AXIAL. ROHS SOLDER COM -
POSITION IS 96% SN, 3.5% AG,
0.5% CU
Derating: LINEARLY FROM
100% @ +25°C TO
0% @ +350°C.
Electrical
Tolerance: ±5%
(OTHER TOLERANCES AVAILABLE).
Power rating: BASED ON 25°C
FREE AIR RATING. (OTHER WATTAGES
AVAILABLE*).
Maximum ohmic values:
SEE CHART.
Overload:
UNDER 11 WATTS: 5 TIMES RATED
WATTAGE FOR 5 SECONDS.
11 WATTS: 10 TIMES RATED WATTAGE
FOR 5 SECONDS.
Temperature coefficient:
1 TO 9.99 Ω : ±100 PPM/°C
10 Ω AND OVER: ±30 PPM/°C
Dielectric withstanding voltage:
500 VAC: 1W RATING
1000 VAC: 2, 3, 5 AND 11W
90 Series
Lead Free Vitreous Enamel Molded
Axial Term. Wirewound, 5% Tolerance Standard
1.5 IN. / 38.1mm L D
Dimensions (in./mm max.)
Series Wattage* Ohms Length Diam. Voltage Lead ga.
91 1.5 0.1 Ω -3.6K 0.452 / 11.5 0.140 / 3.6 150 24
92 2.25 0.1 Ω -3.5K 0.405 / 10.3 0.219 / 5.6 85 20
93 3.25 0.1 Ω -10.5K 0.577 / 14.7 0.234 / 5.9 200 20
95 5.0 0.1 Ω -25K 0.968 / 24.6 0.265 / 6.7 495 20
96 6.5 0.1 Ω -50K 0.952 / 24.2 0.343 / 8.7 625 20
90 11.0 0.1 Ω -91K 1.811 / 46.0 0.343 / 8.7 1080 20
* 2x power ratings by using heat-sink mounting clips shown on following page.
Note: Due to space restrictions, parts are stamped with wattage ratings reduced to the
nearest whole number. The actual wattage ratings are as published in this catalog.
O R D E R I N G I N F O R M AT I O N
Non-Inductive Winding RoHS
OPTIONAL (BLANK = STD. WINDING) Compliant
91 N JR10E
90 Series Wattage Tolerance Resistance Value
SERIES-LEAD 1 = 1.5W J = 5% 1R0 = 1.0 ?
FREE VITREOUS 2 = 2.25W 10R = 10.0 ?
ENAMEL MOLDED 3 = 3.25W 250 = 250 ?
AXIAL T ERM. 5 = 5W 1K0 = 1,000 ?
WIREWOUND 0 = 11W 4K5 = 4,500 ?
51K = 51,000 ?
S TA N D A R D PA RT N U M B E R S F O R 9 0 S E R I E S
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
1
1.1
1.2
1.3
1.5
1.6
1.8
2
2.2
2.4
2.7
3
3.3
3.6
3.9
4
4.3
4.7
––– 1R0
––– 1R1
––– 1R2
––– 1R3
––– 1R5
––– 1R6
––– 1R8
––– 2R0
––– 2R2
––– 2R4
––– 2R7
––– 3R0
––– 3R3
––– 3R6
––– 3R9
––– 4R0
––– 4R3
––– 4R7
22
24
25
27
30
33
35
36
39
40
43
47
50
51
56
62
68
75
––– 22R
––– 24R
––– 25R
––– 27R
––– 30R
––– 33R
––– 35R
––– 36R
––– 39R
––– 40R
––– 43R
––– 47R
––– 50R
––– 51R
––– 56R
––– 62R
––– 68R
––– 75R
350
360
390
400
430
450
470
500
510
560
600
620
680
700
750
800
820
900
––– 350
––– 360
––– 390
––– 400
––– 430
––– 450
––– 470
––– 500
––– 510
––– 560
––– 600
––– 620
––– 680
––– 700
––– 750
––– 800
––– 820
––– 900
3,500
3,600
3,900
4,000
4,300
4,500
4,700
5,000
5,100
5,600
6,000
6,200
6,800
7,000
7,500
8,000
8,200
9,000
––– 3K5
––– 3K6
––– 3K9
––– 4K0
––– 4K3
––– 4K5
––– 4K7
––– 5K0
––– 5K1
––– 5K6
––– 6K0
––– 6K2
––– 6K8
––– 7K0
––– 7K5
––– 8K0
––– 8K2
––– 9K0
13,000
14,000
15,000
16,000
17,000
18,000
20,000
22,000
24,000
25,000
27,000
30,000
33,000
35,000
36,000
39,000
40,000
43,000
––– 13K
––– 14K
––– 15K
––– 16K
––– 17K
––– 18K
––– 20K
––– 22K
––– 24K
––– 25K
––– 27K
––– 30K
––– 33K
––– 35K
––– 36K
––– 39K
––– 40K
––– 43K
5
5.1
5.6
6.2
––– 5R0
––– 5R1
––– 5R6
––– 6R2
82
91
100
110
––– 82R
––– 91R
––– 100
––– 110
910
1,000
1,100
1,200
––– 910
––– 1K0
––– 1K1
––– 1K2
9,100
10,000
11,000
12,000
––– 9K1
––– 10K
––– 11K
––– 12K
45,000
47,000
50,000
51,000
––– 45K
––– 47K
––– 50K
––– 51K
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
––– 6R8
––– 7R5
––– 8R2
––– 9R1
––– 10R
––– 11R
––– 12R
––– 13R
––– 15R
––– 16R
––– 18R
––– 20R
120
130
150
160
180
200
220
240
250
270
300
330
––– 120
––– 130
––– 150
––– 160
––– 180
––– 200
––– 220
––– 240
––– 250
––– 270
––– 300
––– 330
1,300
1,400
1,500
1,600
1,800
2,000
2,200
2,400
2,500
2,700
3,000
3,300
––– 1K3
––– 1K4
––– 1K5
––– 1K6
––– 1K8
––– 2K0
––– 2K2
––– 2K4
––– 2K5
––– 2K7
––– 3K0
––– 3K3
= Standard values
= Non-standard values subject to minimum handling
charge per item
Shaded values involve very fine resistance wire and
should not be used in critical applications without burn-
in and/or thermal cycling.
Check product availability at www.ohmite.com
1-866-9-OHMITE ? INT’L 1-847-258-0300 ? FAX 1-847-574-7522 ? WWW.OHMITE.COM ? INFO@OHMITE.COM
Ohmite Mfg. Co.
29
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