product guide
PRECISION WIREWOUND
AXIAL LEAD SERIES
CONSTRUCTION:
Controlled stress windings are reverse pi wound (non-inductive) on special high temperature epoxy bobbins and terminated using controlled welds. An extensive accelerated aging program provides the ultimate in stabilization. A resilient inner coating and dry air chamber isolate exterior protective epoxy shell from windings to increase moisture protection and stability. Leads are firmly anchored inside bobbin with a high temperature epoxy that assures excellent structural strength. Standard marking includes Trademark, part number, resistance value and resistance tolerance.
FEATURES:
Resistance Tolerances: To ±.005% (25°C)  
Temperature range: -65°C to 150°C
Temperature coefficients of resistance to 0 ±1PPM/°C
Exceptional resistance stability.
All terminations made of controlled welds.
Fast rise time and minimum phase shift available on selected styles.
Temperature range: -65°C to 150°C
Extremely low noise.
New micro-miniature sizes available.
Marking impervious to most cleaning agents.
Exceed the applicable requirements of Mil-R-93.
STANDARD TOLERANCES:
1%, 0.5%, 0.25%, 0.1%, 0.05%, 0.01% and 0.005% of marked resistance value (calibrated at +25°C ±1°C)
Special tolerances are available on request.
STANDARD LEAD MATERIAL: Tinned Copper
Measurements are made with equipment calibrated to the absolute ohm standard. Since electrical limitations exist in terminating resistance wire, there are minimum tolerance limits applicable to various resistance ranges. These tolerances with corresponding resistance values as shown below.
Tolerance (%) Resistance Value Tolerance (%) Resistance Value
0 ± .005 1000 and over 0 ± .01 50 and over
0 ± .05 5 and over 0 ± .10 1 and over
0 ± .25 .05 and over - - - -
Standard Temperature Coefficient of Resistance
PPM/° C Resistance PPM/° C Resistance
0 ± 10 1000 and over 0 ± 15 10 to 100
0 ± 30 1 to 10 0 ± 90 less than 1

Dimension Shown in Inches. Conversion to M.M. = Inch x 25.4 
M-O P/N Mil R-93
Equiv		 Length
(L) ±.032		 Dia.
(D) ±.015		 Lead Awg (d) Com'l Wattage Max.DC
Voltage		 Max Resistance
(.0006 wire)
133 RB74 .500 .200 22 .30 300 600K
139 n/a .700 .200 22 .40 300 1.2M
144 RB75 .250 .250 22 .25 150 400K
115 n/a .340 .275 22 .25 200 1M
156 RB56 .375 .250 20 .25 200 700K
143 RB55 .500 .250 20 .30 300 900K
137 RB54 .750 .250 20 .50 300 1.2M
136 n/a .610 .375 20 .50 400 3M
132 RB53 .750 .375 20 .66 500 3M
138 RB52 1.00 .375 20 1.0 750 5M
134 n/a .500 .500 20 .66 300 3M
170 n/a .625 .500 20 .75 400 3M
146 RB57 1.00 .500 20 1.5 750 7M
180 RB58 1.50 .500 20 2.0 1000 15M
190 RB59 2.00 .500 20 2.5 1200 20M
For resistance values higher than shown please contact our engineering department.
home page product guide 200 - radial 400 - printed circuit,cyl. 400 - printed circuit,rect.
Subminiatures
M-O P/N Mil R-93
Equiv		 Length
(L) ±.032		 Dia. (D) ±.015 Lead Awg (d) Com'l Wattage Max.DC
Voltage		 Max Resistance
(.0006 wire)
140 n/a .250 .125 24 .10 100 150K
112 n/a .375 .125 24 .125 200 125K
113 n/a .312 .160 22 .15 150 300K
150 n/a .500 .160 22 .20 200 400K
114 n/a .312 .187 22 .20 200 300K
135 n/a .375 .187 22 .25 300 300K
160 n/a .625 .187 20 .30 300 600K
For resistance values higher than shown please contact our engineering department.
Dimension Shown in Inches. Conversion to M.M. = Inch x 25.4
Micro-Miniatures
M-O P/N Mil R-93
Equiv		 Length
(L) ±.032		 Dia. (D) ±.015 Lead Awg (d) Com'l Wattage Max.DC
Voltage		 Max Resistance
(.0006 wire)
XP101 n/a .375 .050 30 .02 50 10K
100 n/a .110 .070 30 .03 50 11k
105 n/a .115 .075 30 .04 50 11k
110 n/a .200 .093 28 .05 75 30k
130 n/a .312 .093 28 .06 100 60k
142 n/a .185 .120 28 .06 100 30k
141 n/a .160 .125 28 .06 100 30k
For resistance values higher than shown please contact our engineering department.
ORDERING INFORMATION
Example: .25W 100ohm 5ppm .1%
156
100R0
C7
B
Type
Resistance
5 digit <100 ohm use R for decimal. >100 ohm 5th digit is multiplier.
T.C.
C3 = 25
C6 = 10
C7 = 5
C10 = 2
C8 = 1
Tolerance
J = 5%
L = 3%
F = 1%
D = .5%
C = .25%
B = .1%
A = .05%
P = .025%
Q = .02%
T = .01%
V = .005%
How to order Micro-Ohm Resistors
TO ORDER PRODUCTS
E mail: microohm@mail.com
Call Toll Free: 1-800-845-5167
home page product guide 200 - radial 400 - printed circuit, cyl. 400 - printed circuit,rect.