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MRF314
MRF314
| Part Number | MRF314 |
|---|---|
| Manufacturer | M/A‑COM Technology Solutions / Motorola |
| Category | Discrete Semiconductor Products > Transistors – Bipolar (BJT) – RF |
| Description | NPN Silicon RF Power Transistor, 30W CW Output Power, 28V, 30–200 MHz VHF, M135 / Case‑211‑07 Flanged Ceramic Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
MRF314 is an NPN silicon RF power transistor for Class A/B/C VHF amplifiers from 30‑200 MHz. Operating at 28 V, it delivers 30 W CW output power. Built‑in emitter ballasting provides strong VSWR mismatch tolerance. Gold‑metallized flanged ceramic Case‑211‑07 package ensures low thermal resistance and high reliability for communications transmitters.
Core Advantages
High Gain & Output Power
30 W CW output across 30‑200 MHz VHF band, minimum 10 dB gain @150 MHz, reduces drive requirements for transmitter systems.
Superior Mismatch Ruggedness
Integrated emitter ballast resistors suppress thermal runaway, withstand up to 30:1 VSWR load mismatch.
Gold Metallization
Gold metal bonding improves electromigration resistance for long‑term reliability under harsh working conditions.
Low‑Thermal‑Resistance Package
Case‑211‑07 flanged ceramic package supports direct chassis mounting for efficient heat dissipation.
Key Specifications
| Brand | MACOM / Motorola |
|---|---|
| RoHS Status | RoHS Compliant / Lead‑Free Options Available |
| EDA / CAD | PCB Footprint & 3D Model Available upon Request |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | M135 (Case‑211‑07) Flanged Ceramic |
| Mounting Type | Chassis Mount / Flange Mount |
| Surface Marking / Silkscreen | MRF314 / MACOM Logo |
| Transistor Type | RF NPN Bipolar Power Transistor |
| Frequency Range | 30 MHz to 200 MHz (VHF Band) |
| Output Power (Pout) | 30 W (CW) |
| Collector‑Emitter Voltage (Vceo) | 35 V (Max) |
| Collector‑Base Voltage (Vcbo) | 65 V (Max) |
| Operating Collector Voltage (Vcc) | 28 V (Nominal) |
| Continuous Collector Current (Ic) | 3.4 A (Max) |
| Total Device Dissipation @Tc=25℃ | 82 W |
| Power Gain | ≥ 10 dB (Min at 150 MHz) |
| Collector Efficiency | 50% (Typ @150 MHz) |
| Thermal Resistance Rth(j‑c) | 2.13 ℃/W (Max) |
| Storage Temperature Range | -65℃ ~ +150℃ |
Typical Applications
- VHF Commercial and Military Tactical Radio Communication Transmitters
- Land Mobile Radio (LMR) Base Stations and Repeater Power Amplifiers
- FM Broadcast Transmitters and Marine VHF Communications Equipment
- Avionics Navigation and Communication Transmitter Amplifiers
- Industrial RF Drivers, Signal Generators, and Laboratory Amplifiers
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1‑2 business days |
| Delivery Time | 3‑7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What is the operating frequency and power of MRF314?
A: Operates 30‑200 MHz VHF band, delivers 30 W CW output power at 28 V nominal supply.
Q2: Why is MRF314 robust against load mismatch?
A: Integrated diffused emitter ballasting prevents thermal runaway, supports up to 30:1 VSWR severe load mismatch.
Q3: What package does MRF314 use?
A: Case‑211‑07 (M135) flanged ceramic package for direct chassis heatsink mounting.
Q4: What is the difference between MRF314 and MRF314A?
A: Electrical specs are identical. Different packages: MRF314 flanged‑ceramic; MRF314A stud‑mount. Not pin‑to‑pin compatible, cannot direct drop‑in replace. Both are obsolete legacy RF BJT parts.
Q5: What are cross‑reference alternatives for MRF314?
A: Alternatives include MRF317, MRF320. Always verify package, voltage and gain before replacement, mechanical fit may differ.
Q6: What are thermal parameters of MRF314?
A: Junction‑to‑case thermal resistance max 2.13℃/W, storage temperature ‑65℃ ~ +150℃. Proper heatsink is required for continuous 30W CW operation.
Q7: How to get datasheet and bulk quotation?
A: Submit inquiry form for datasheet, CAD footprint, stock check and volume pricing.
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