onsemi FJPF5027RYDTU

Overview

FJPF5027RYDTU from onsemi is an NPN silicon power transistor designed for high-voltage switching in industrial and power conversion systems, featuring 800 V V_CEO, 3 A DC collector current, 40 W power dissipation at T_C = 25°C, and 15 MHz f_T; used in flyback converters, motor control snubbers, and solid-state relay drivers.

For engineers reviewing the FJPF5027RYDTU datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) under inductive loads, V_CE(sat) ≤ 2 V at I_C = 1.5 A / I_B = 0.3 A, h_FE grade O (20–40), and TO-220 Fullpack thermal performance.

Technical Context

This device operates as a single NPN bipolar junction transistor with base-controlled current amplification, optimized for high-voltage, medium-current switching where ruggedness against inductive kickback and wide forward/reverse bias SOA are critical. It supports clamped inductive switching with V_CEX(sus) = 800 V at I_C = 1.5 A and symmetrical base drive (I_B1 = −I_B2 = 0.3 A).

Its 60 pF output capacitance at V_CB = 10 V and 1 MHz enables predictable turn-off behavior in hard-switched topologies, while t_ON/t_STG/t_F values of 0.5 µs / 3 µs / 0.3 µs define timing constraints for gate driver design in 20–100 kHz power stages.

Key Specifications

Pinout & Package

Package: TO-220 Fullpack (Case 221AT), 3-lead, through-hole, insulated tab, rated for 40 W at T_C = 25°C with typical R_θJC = 0.625°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage NPN transistor applications.

Compared with MJD127G and BU508AF, the FJPF5027RYDTU offers optimal balance of 800 V blocking, 3 A current, and TO-220 thermal manageability for mid-power industrial switching-neither over-specified nor under-rated for 400 V bus systems.

Availability

FJPF5027RYDTU is available at Aetrix Electronics and suitable for industrial motor control, AC-DC power supplies, and solid-state relay designs requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for FJPF5027RYDTU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation, serving automotive, industrial, cloud, and IoT markets with discrete, analog, and logic solutions.

The FJPF5027RYDTU belongs to onsemi's high-voltage bipolar transistor family engineered for ruggedized switching in industrial power electronics, emphasizing wide SOA, clamped inductive survivability, and Pb-free reliability.

FAQ

What is the hFE grade of FJPF5027RYDTU and how does it affect base drive design?

The FJPF5027RYDTU carries hFE grade "O", specifying a DC current gain range of 20–40 at V_CE = 5 V and I_C = 0.2 A. This means a minimum base current of 37.5 mA is required to saturate the FJPF5027RYDTU at I_C = 1.5 A (assuming hFE = 40), while worst-case drive must supply ≥75 mA (hFE = 20). Designers should verify saturation with V_CE(sat) ≤ 2 V under actual load conditions.

Can FJPF5027RYDTU replace a MOSFET in high-voltage switching applications?

The FJPF5027RYDTU can replace low-frequency MOSFETs in <100 kHz applications where its 800 V V_CEO, 3 A I_C, and clamped inductive switching capability meet requirements-but it requires continuous base drive current (vs. MOSFET gate charge), has higher conduction loss (V_CE(sat) vs. R_DS(on)), and slower switching than modern SiC or GaN devices. Use FJPF5027RYDTU where bipolar ruggedness and cost outweigh speed needs.

What is the maximum allowable case temperature for continuous operation of FJPF5027RYDTU?

The FJPF5027RYDTU has a maximum junction temperature of 150°C and a storage temperature range of −55°C to +150°C. Its power derating curve shows linear reduction from 40 W at T_C = 25°C to zero at T_C = 175°C. For continuous operation, maintain T_C ≤ 125°C to retain ≥12.5 W dissipation; heatsink design must account for R_θJC = 0.625°C/W and interface resistance to ensure FJPF5027RYDTU stays within thermal limits.

Does FJPF5027RYDTU support avalanche energy rating, and how is it validated?

The FJPF5027RYDTU datasheet does not specify single-pulse avalanche energy (E_AS) or repetitive avalanche ratings. Instead, it validates ruggedness via reverse and forward bias Safe Operating Area (SOA) curves and clamped inductive switching test (V_CEX(sus) = 800 V at I_C = 1.5 A). Designers must rely on SOA compliance-not avalanche rating-to ensure reliability under inductive turn-off stress in FJPF5027RYDTU-based circuits.

What marking code identifies the hFE grade on the FJPF5027RYDTU package?

The FJPF5027RYDTU package marking includes "J5027−O" where the letter "O" immediately follows the device code and denotes the hFE grade. This matches the datasheet's hFE classification table, confirming the device falls within the 20–40 DC current gain range. The full top-side marking also contains site code (A), year (Y), work week (WW), and assembly lot (ZZ), all consistent with onsemi's standard TO-220 Fullpack labeling convention for FJPF5027RYDTU.