Ohmite B12J75R Overview
The Ohmite B12J75R is a 75 ohm, 12 watt fixed wirewound resistor belonging to the Brown Devil 200 Series. This high-power resistor features a high temperature rugged vitreous enamel coating and is flame resistant. All-welded construction ensures reliable long-term performance in demanding environments. The ±5% tolerance rating provides consistent electrical characteristics across the supply.
Key Features
- 75 ohm, 12 watt power rating
- High temperature rugged vitreous enamel coating with flame resistance
- All-welded construction for durability
- 5% resistance tolerance
- Suitable for high wattage applications
- Hollow-core tubular ceramic design for secure mounting
Technical Specifications
- Resistance: 75 Ω
- Power Rating: 12 W
- Tolerance: ±5%
- Series: Brown Devil 200 Series
- Construction: Wirewound tubular
- Coating: Vitreous enamel
- Temperature Coefficient: 400 ppm/°C
- Mounting: Bolt-down with brackets or spring clips
- Package Quantity: Box of 25
Typical Applications
The B12J75R is well-suited for:
- Industrial power supply circuits
- Load balancing and current limiting
- Surge suppression circuits
- Test and measurement equipment
- Motor control and drive circuits
- Heavy-duty electrical systems requiring precision dissipation
Compatibility & Replacements
Compatible With
- Allen-Bradley industrial controllers
- Siemens automation systems
- Mitsubishi electrical equipment
- Omron control systems
- General-purpose AC/DC power circuits rated for 625V operation
- Industrial power supplies and drive systems
Replaces / Drop-In Replacement For
- Ohmite B12J75R (primary part number)
- Military designation MIL-R-18546H equivalent 75Ω 12W applications
- Legacy wirewound resistor applications requiring 12W dissipation at 75Ω
Works With
- General-purpose industrial automation circuits
- Power electronics and rectifier circuits
- Test benches and calibration equipment
- Educational and laboratory settings
- Retrofit and replacement applications for vintage and modern industrial equipment
