Overview
The NEC 2SC1251 is a common emitter NPN silicon RF power transistor designed for high-linearity Class A amplifier applications across frequencies up to 2.0 GHz. This device combines robust RF performance with reliable linearity, making it suitable for telecommunications, broadcast equipment, and industrial RF amplification circuits. The transistor’s gold metalization and stud-based package ensure excellent thermal characteristics and electrical stability under demanding operational conditions.
Key Features
- High linearity Class A amplifier design up to 2.0 GHz frequency range
- Minimum 10 dB gain at 1.0 GHz for robust signal amplification
- Gold metalization for superior contact reliability and longevity
- Stud mount package (.204 4L) enabling excellent heat dissipation
- Direct replacement for NE74020 transistor
- Operating junction temperature range: -65°C to +200°C
Technical Specifications
- Collector Current (IC): 300 mA maximum
- Collector-Base Voltage (VCB): 45 V maximum
- Power Dissipation (PDISS): 5.3 W at TC = 25°C
- Junction Temperature (TJ): -65°C to +200°C
- Storage Temperature (TSTG): -65°C to +200°C
- Frequency Range: DC to 2.0 GHz
- Gain: 10 dB minimum at 1.0 GHz
- Package Style: 4L STUD (.204 inch base)
- Manufacturer: NEC (Nippon Denki)
Typical Applications
- RF power amplifier stages in telecommunications systems
- Broadcast equipment and transmitter circuits
- Industrial RF signal boosting and amplification
- High-frequency communication device amplification stages
- Class A amplifier circuits requiring linearity and efficiency
Compatibility & Replacements
Compatible With
- RF and microwave amplifier circuit designs
- Telecommunications and broadcast transmission systems
- Industrial control and instrumentation RF stages
- Any Class A amplifier circuit rated for 2.0 GHz operation
Replaces / Drop-In Replacement For
- NE74020 NPN power transistor
Works With
- Standard RF amplifier circuit design software and CAD tools
- Common emitter biasing networks and matching circuits
- SPICE simulation models for RF transistor design validation
- Thermal management solutions (heat sinks, thermal interface materials)
