Ohmite 280 Application Information

Application Notes

Core and Terminal Selection for Made to Order Type 280 Corrib Resistors

Free Air
Wattage

Rating O.D. I.D. Length

1500 2.50” (63.5mm) 1.75” (44.45mm) 20.0” (508.00mm) S 0.56 358 45
1000 15.0” (381.00mm) S 0.41 258
750 12.0” (304.80mm) S 0.31 198
380 6.0” (152.40mm) S 0.13 78

550 1.625” (41.28mm) 1.125” (28.58mm) 11.75” (298.45mm) R 0.21 133 45
500 10.50” (266.70mm) R 0.19 117
400 8.5” (215.90mm) R 0.14 91

270 1.50” (38.10mm) 1.125” (28.58mm) 5.0” (127.00mm) Q 0.065 41 45

395 1.125” (28.58mm) 0.75” (19.05mm) 11.25” (285.75mm) P 0.14 87 45
375 10.5” (266.70mm) P 0.13 80
300 8.5” (215.90mm) P 0.099 63
220 6.0” (152.40mm) P 0.063 39
185 5.0” (127.00mm) P 0.05 30
155 4.25” (107.95mm) P 0.038 25

Core Dimensions

Code

for

Core

Dia.

Ohms

Min. Max.

Term.

Type

Free Air
Wattage

Rating O.D. I.D. Length

315 1.00” (25.40mm) 0.625” (15.88mm) 10.0” (254.00mm) N 0.11 67 45
215 7.0” (177.60mm) N 0.068 43
190 6.0” (152.40mm) N 0.056 35
150 5.0” (127.00mm) N 0.043 27
125 4.0” (101.60mm) N 0.031 19

180 0.75” (19.05mm) 0.50” (12.70mm) 6.5” (165.10mm) M 0.031 29 45
160 6.0” (152.40mm) M 0.038 26
140 5.0” (127.00mm) M 0.028 20
105 4.0” (101.60mm) M 0.020 14
100 3.5” (88.90mm) M 0.021 11

135 0.563” (14.30mm) 0.313” (7.95mm) 6.0” (152.40mm) K 0.028 21 46
110 5.0” (127.00mm) K 0.029 16
90 4.0” (101.60mm) K 0.021 12 46
35 2.0” (50.80mm) K 0.0097 0.11

35 0.563” (14.30mm) 0.313” (7.95mm) 2.0” (50.80mm) K 0.12 5.6 40

Core Dimensions

Code

for

Core

Dia.

Ohms

Min. Max.

Term.

Type

Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax [phone] • www.ohmite.com • [e-mail] 43