
BLF278
50 V dual push-pull VHF power MOS transistor
Key details
| Part Number | BLF278 |
|---|---|
| Manufacturer | NXP Semiconductors |
| Category | RF Power Transistor |
| Lifecycle Status | Obsolete |
| Series | BLF278 |
| Package / Case | 4-lead SOT262A1 RF flange |
| Pin Count | 4 |
| Operating Temperature | Up to +200°C junction |
| Last Verified | 2026-07-18 |
Part information
BLF278 Overview
BLF278 is a NXP Semiconductors 50 V dual push-pull VHF power MOS transistor supplied in 4-lead SOT262A1 RF flange. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Supply Class | 50 V RF power transistor |
|---|---|
| Frequency | Up to 225 MHz class-AB application |
| Output Power | 250 W class-AB reference condition |
| Typical Power Gain | 16 dB |
| Configuration | Dual push-pull |
Package and Ordering Notes
The listed package is 4-lead SOT262A1 RF flange with 4 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. Lifecycle is recorded as Obsolete; confirm current factory support and last-time-buy constraints before design-in.
Sourcing Guidance
BLF278 is a legacy or obsolete orderable code. Source only with date-code, label, package and traceability checks appropriate to the application.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against NXP Semiconductors documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
Related part numbers
These published records are the closest catalog references to BLF278 by manufacturer, product category, series or package. Confirm electrical ratings, pinout and ordering suffixes before substitution.
- CLRC66303HNE — high-performance multi-protocol NFC frontend with 6 KB EEPROM and 512-byte FIFO Related by the same manufacturer.
- AO3400 — 30 V N-channel enhancement-mode MOSFET Related by the same power-semiconductor product group.
- AO4413 — -30 V P-channel enhancement-mode power MOSFET Related by the same power-semiconductor product group.
- AON6992 — 30 V dual asymmetric N-channel MOSFET half-bridge Related by the same power-semiconductor product group.
Lifecycle and sourcing review
This part has a legacy lifecycle status. Submit the exact MPN, quantity, delivery destination and date-code requirements for a sourcing review.
BLF278 is a legacy or obsolete orderable code. Source only with date-code, label, package and traceability checks appropriate to the application.