Description
This is an Ohmite Vitreous Enameled 270 Series Resistor. The part number is L12J390. 270 Type resistors are suitable for rugged applications and they feature all-welded construction and durable lead free vitreous enamel coating.
Mounting brackets are not included.
Specifications:
- Manufacturer: Ohmite
- Part Number: L12J390
- Type: 270 Series
- Series: L12
- Wattage: 12
- Ohms: 0.1-51K
- Dimensions (in/mm):
- Length: 1.75 / 44.4
- Diameter: 0.313 / 7.94
- I.D. Core: 0.188 / 4.76
- Core Code: D
- Max Voltage: 565
- Std Terminal: 57
- Features:
- Terminals suitable for soldering or bolt connection
- High wattage applications
- Rugged lead free vitreous enamel coating
- Flame resistant coating
- All-welded construction
- Fast on" option see terminal 538
- Material:
- Coating: Lead free vitreous enamel.
- Core: Tubular ceramic.
- Terminals: Solder coated radial lug. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu
- Derating: Linearly from 100% @ +25C to 0% @ +350C.
- Electrical:
- Tolerance: 5% 1 ohm and over (J); 10% under 1 ohm.(K)
- Power rating: Based on 25C free air rating. \
- Overload: 10 times rated wattage for 5 seconds. \
- Temperature coefficient: 1 to 20 ohms: 400 ppm/C. Above 20 ohms: 260 ppm/C
- Dielectric withstanding voltage: 1000 VAC: 12 to 100 watt rating. 3000 VAC: 175 to 225 watt rating (Measured from terminal to mounting bracket)
- To calculate max. amps: use the formula
- Power limitations for high resistance values: When resistance exceeds the resistance values listed at right, derate the Power Rating by 25% to improve reliability:
- Power rating: 12W
- Resistance value: 3,900 ohms