sP e C i F i CAT i ON s
Fe AT u R es
Material
Radial construction for direct PC-58 Series
Core: Ceramic. insertion into printed circuit
boards; fit standard 0.10 inch
Coating: Vitreous enamel except Tubular Radial Terminal
matrix boards with standard
for values above 4.7K (3W) and
Wirewound for PC Board Applications
0.046 inch diameter holes.
7.5K (5W), which are supplied in
Provides a built in stand-off to
silicone-ceramic coatings.
D
L 0.016"
reduce board temperature.
Terminals: Solder coated radial. max.
Space saving radial terminals
#20 ga. tinned terminals require
reduce the total length require-
0.046 in. (1.168 mm) holes (2).
ment compared to axial terminal
RoHS solder composition is 96% H 0.031"
resistors and increase packaging
Sn, 3.5% Ag, 0.5% Cu
density possibilities.
Derating: Linearly from
Flame resistant lead free vitre-
100% @ +25C to 0% @ 0.25"0.031
ous enamel coating. 6.35 mm 0.794
+350C.
RoHS compliant; add E suffix
Note: Values above 3.9K (3W)
A 0.010" 0.031" min.
to part number to specify.
and 8.2K (5W) involve very fine
0.79 mm
resistance wire and should not
be used in critical applications
without burn-in and/or thermal
Dimensions (in. / mm)
cycling.
series Wattage Ohms Length Height Diam. Dim. A Voltage
Electrical
R3 (vitreous) 3 1-3.9K 0.438 / 11.13 0.469 / 11.91 0.313 / 7.95 0.30 / 7.62 103
Tolerance: 5% (J)
(silicone) 4K-10K
(other tolerances available).
R5 (vitreous) 5.25 1-7.4K 0.625 / 15.88 0.516 / 13.11 0.344 / 8.74 0.50 /12.70 187
Power rating: Based on 25C free
(silicone) 7.5K-20K
air rating.
Overload:
3 watt: 5 times rated wattage for
Standard part numberS for pc-58 SerieS
5 seconds.
Wattage Wattage Wattage Wattage
= Standard values
5.25 watt: 10 times rated watt-
Values above 3.9K
age for 5 seconds.
Part No. Part No. Part No. Part No.
(3W) and 8.2K (5W)
Temperature coefficient: 260
Prefix Prefix Prefix Prefix
involve very fine
ppm/C.
Suffix Suffix Suffix Suffix
resistance wire and
To calculate max. amps: use the
51 51R
1 1R0 430 430 2500 2K5
should not be used
formula P/R.
1.5 1R5 56 56R 500 500 2700 2K7
in critical applica-
2 2R0 68 68R 510 510 3000 3K0 tions without burn-
ordering information
75 75R in and/or thermal
2.4 2R4 560 560 3300 3K3
cycling.
3 3R0 82 82R
RoHS 600 600 3900 3K9
Compliant
Values above 4.7K
3.9 3R9 100 100 620 620 4700 4K7
(3W) and 7.5K (5W)
120 120
5 5R0 750 750 5000 5K0
R5J1K0 E
supplied in silicone-
150 150
5.1 5R1 800 800 5600 5K6
PC-58 Wattage Tolerance Ohm Value ceramic coatings
5.6 5R6 160 160 820 820 6200 6K2
Series J= 5% Example:
instead of vitreous
1R0 = 1.0
7.5 7R5 200 200 910 910 6800 6K8
10R = 10.0 enamel.
220 220
250 = 250 10 10R 1000 1K0 7500 7K5
4K7 = 4,700
15 15R 250 250 1200 1K2
8200 8K2
18 18R 270 270 1300 1K3 9000 9K0
300 300
20 20R 1500 1K5 9100 9K1
330 330
22 22R 1800 1K8 10,000 10K
25 25R 350 350 2000 2K0 12,000 12K
30 30R 390 390 2200 2K2 15,000 15K
400 400
40 40R 2400 2K4 20,000 20K
50 50R
Check product availability at www.ohmite.com
Our friendly Customer
service team can be
reached at 866-9-OHMiTe
Ohmite Mfg. Co. 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com 29
Ohmic value
R3J 3
R5J 5
Ohmic value
R3J 3
R5J 5
Ohmic value
R3J 3
R5J 5
Ohmic value
R3J 3
R5J 5