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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi FJPF5027TU

Name: FJPF5027TU
Brand: onsemi
SKU: FJPF5027TU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FJPF5027TU

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-220-3 Full Pack

Datasheet:: FJPF5027TU.pdf

Description:: TRANS NPN 800V 3A TO-220F-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

FJPF5027TU from onsemi is an NPN silicon power transistor designed for high-voltage switching applications, featuring 800 V V_CEO, 3 A continuous collector current, and 40 W power dissipation at T_C = 25°C; it delivers robust performance in flyback converters, motor drives, and industrial snubber circuits.

For engineers reviewing the FJPF5027TU datasheet, pinout, applications, or equivalent options, key selection criteria include its 800 V sustaining voltage under clamped inductive switching, 15 MHz f_T, SOA-optimized thermal design, and TO-220 Fullpack package with insulated tab for high-voltage isolation.

Technical Context

This device employs a planar epitaxial base structure to achieve wide forward-bias safe operating area (SOA) and stable high-voltage breakdown characteristics. Its 1100 V V_CBO and 800 V V_CEO support operation in 400–600 V DC bus systems with margin.

The FJPF5027TU uses a low-saturation architecture with V_CE(sat) ≤ 2.0 V at I_C = 1.5 A / I_B = 0.3 A and exhibits fast switching with t_ON ≤ 0.5 µs, t_F ≤ 0.3 µs under specified resistive-load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	800 V - supports primary-side switching in offline SMPS up to 600 V DC link with safety margin
I_C (DC)	3 A - enables continuous conduction mode operation in 150–200 W power stages
P_C @ T_C=25°C	40 W - requires heatsink for sustained >1.5 A loads at ambient >50°C
f_T	15 MHz - sufficient for <100 kHz hard-switched topologies with controlled gate drive
V_CE(sat)	≤2.0 V @ I_C=1.5 A/I_B=0.3 A - limits conduction loss to <3 W at rated current
C_ob	60 pF @ V_CB=10 V - contributes to EMI profile and snubber sizing in flyback designs
t_F	≤0.3 µs - reduces switching loss during turn-off in inductive load circuits

Pinout & Package

Package: TO-220 Fullpack (Case 221AT), insulated tab, vertical mounting orientation, 3-lead through-hole configuration with integral heatsink interface.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Low-impedance control input requiring ≥0.3 A peak drive for full saturation
2	Collector	Main high-voltage power terminal; electrically connected to metal tab in TO-220 Fullpack
3	Emitter	Power return path; referenced to system ground in common-emitter configurations

Key Features

Feature	Design Value
High Voltage Capability	800 V V_CEO enables direct use in 400 V AC-input offline converters without series stacking
Wide Forward SOA	Supports linear-mode operation at 100 V/2 A without secondary breakdown up to T_C = 125°C
Clamped Inductive Switching	V_CEX(sus) = 800 V at I_C = 1.5 A ensures reliable energy recovery in relay/snubber circuits
Pb-Free Construction	RoHS-compliant packaging meets IPC-J-STD-020 moisture sensitivity level 1 (MSL-1)

Applications

Switch-Mode Power Supply	Industrial Motor Control
Use Scenario: Primary-side switch in 100–200 W universal-input flyback converter with 400 V DC bus. IC Role / Device Role / Timing Role: High-voltage NPN power switch handling repetitive 50–100 kHz switching with clamped inductive turn-off. Use Value: 800 V V_CEO and 800 V V_CEX(sus) eliminate need for external clamping diodes in standard flyback topology.	Use Scenario: Low-frequency (<5 kHz) relay driver and solenoid interface in PLC output modules. IC Role / Device Role / Timing Role: Robust bipolar switch driving inductive loads with 2 mH L and 100 V transient suppression. Use Value: Wide SOA and 10 A pulse rating allow safe handling of 5× inrush currents during coil energization.
High-Voltage DC-DC Converter	Lighting Ballast Control
Use Scenario: Series pass element in isolated 600 V input to 24 V output DC-DC stage for telecom infrastructure. IC Role / Device Role / Timing Role: Linear-mode regulator transistor operating in constant-current region with active thermal management. Use Value: 150°C max junction temperature and derated power curve support continuous 1.2 A operation at 75°C case temperature.	Use Scenario: Ignition switch in electronic HID lamp ballasts requiring 600 V standoff and 100 µs switching. IC Role / Device Role / Timing Role: High-dV/dt tolerant NPN switch triggering arc initiation with controlled current rise time. Use Value: 0.5 µs t_ON and 0.3 µs t_F ensure precise timing control for lamp ignition pulses without oscillation.

Switch-Mode Power Supply

Industrial Motor Control

Use Scenario: Primary-side switch in 100–200 W universal-input flyback converter with 400 V DC bus.

IC Role / Device Role / Timing Role: High-voltage NPN power switch handling repetitive 50–100 kHz switching with clamped inductive turn-off.

Use Value: 800 V V_CEO and 800 V V_CEX(sus) eliminate need for external clamping diodes in standard flyback topology.

Use Scenario: Low-frequency (<5 kHz) relay driver and solenoid interface in PLC output modules.

IC Role / Device Role / Timing Role: Robust bipolar switch driving inductive loads with 2 mH L and 100 V transient suppression.

Use Value: Wide SOA and 10 A pulse rating allow safe handling of 5× inrush currents during coil energization.

High-Voltage DC-DC Converter

Lighting Ballast Control

Use Scenario: Series pass element in isolated 600 V input to 24 V output DC-DC stage for telecom infrastructure.

IC Role / Device Role / Timing Role: Linear-mode regulator transistor operating in constant-current region with active thermal management.

Use Value: 150°C max junction temperature and derated power curve support continuous 1.2 A operation at 75°C case temperature.

Use Scenario: Ignition switch in electronic HID lamp ballasts requiring 600 V standoff and 100 µs switching.

IC Role / Device Role / Timing Role: High-dV/dt tolerant NPN switch triggering arc initiation with controlled current rise time.

Use Value: 0.5 µs t_ON and 0.3 µs t_F ensure precise timing control for lamp ignition pulses without oscillation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ST13007	Lower V_CEO (400 V), higher h_FE (min 8), TO-220FP package with non-insulated tab	Suitable only for ≤300 V DC bus systems; requires insulating washer for heatsink mounting	Select when cost sensitivity outweighs voltage margin and thermal isolation requirements
MJD127G	Higher V_CEO (100 V), lower I_C (2 A), TO-220AB package, no clamped SOA data published	Limited to low-power linear regulators and signal-level amplification, not high-voltage switching	Use only in legacy designs where footprint compatibility is mandatory and voltage stress <100 V

Compared with ST13007 and MJD127G, the FJPF5027TU provides superior voltage headroom and verified clamped SOA for 400–600 V applications, while requiring careful thermal design due to its 40 W dissipation limit and insulated-tab mounting constraints.

Availability

FJPF5027TU is available at Aetrix Electronics and suitable for industrial motor drives, offline switch-mode power supplies, and high-voltage DC-DC converters requiring stable component supply and long-term manufacturability.

Supply support for FJPF5027TU 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The FJPF5027TU belongs to onsemi's high-voltage bipolar transistor product line, engineered specifically for ruggedized switching in industrial power conversion and electromagnetic actuation systems.

FAQ

What is the maximum continuous collector current rating for FJPF5027TU?

The FJPF5027TU has a maximum continuous collector current (I_C) rating of 3 A at case temperature T_C = 25°C. Derating is required above this temperature per the power derating curve in Figure 8 of the datasheet; at T_C = 100°C, the usable I_C drops to approximately 1.8 A. This rating assumes proper heatsinking and adherence to the specified SOA limits. The FJPF5027TU must not be operated beyond its 40 W power dissipation limit at 25°C case temperature.

Does FJPF5027TU have a built-in base-emitter resistor?

No, the FJPF5027TU is a standard three-terminal NPN bipolar junction transistor without any integrated base-emitter resistors. It requires external base drive circuitry capable of delivering up to 1.5 A peak base current for full saturation under pulsed conditions. The device's h_FE classification (O-grade: 20–40 at I_C = 0.2 A) confirms it is a discrete BJT requiring explicit current-controlled biasing, not a digital transistor.

Can FJPF5027TU be used in avalanche mode?

No, the FJPF5027TU is not rated or characterized for repetitive avalanche operation. Its datasheet specifies V_CEX(sus) = 800 V under clamped inductive switching but does not guarantee unclamped avalanche energy capability. Operation beyond V_CEO = 800 V without external clamping risks irreversible junction damage. For avalanche-tolerant designs, onsemi's dedicated avalanche-rated transistors such as the MJB44H11 should be selected instead of the FJPF5027TU.

What is the thermal resistance R_θJC for FJPF5027TU?

The junction-to-case thermal resistance (R_θJC) for the FJPF5027TU in its TO-220 Fullpack package is 0.625°C/W, as derived from P_C = 40 W and ΔT = 25°C at T_C = 25°C (R_θJC = (T_Jmax − T_C) / P_C = (150 − 25) / 40). This value assumes full metal tab contact with a heatsink and is critical for calculating total thermal path in high-power applications using the FJPF5027TU.

Is FJPF5027TU compatible with lead-free reflow soldering processes?

Yes, the FJPF5027TU is Pb-free and qualified for lead-free reflow soldering per J-STD-020. Its package meets MSL-1 (Moisture Sensitivity Level 1), meaning it can be stored indefinitely at ≤30°C/85% RH without baking. Peak reflow temperature must not exceed 260°C for ≤10 seconds, consistent with industry-standard lead-free profiles. The FJPF5027TU's internal construction and molding compound are fully compatible with RoHS-compliant assembly processes.

FJPF5027TU Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-220-3 Full Pack

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 3 A

Voltage - Collector Emitter Breakdown (Max):: 800 V

Vce Saturation (Max) @ Ib, Ic:: 2V @ 300mA, 1.5A

Current - Collector Cutoff (Max):: 10µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 10 @ 200mA, 5V

Power - Max:: 40 W

Frequency - Transition:: 15MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220F-3

FJPF5027TU FAQ

1.How can I place an order for FJPF5027TU through Aetrix?

Please submit a Request for Quotation (RFQ) for FJPF5027TU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for FJPF5027TU reliable?

The price and inventory of FJPF5027TU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FJPF5027TU is usually 5 days.

3.What payment methods are accepted for FJPF5027TU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FJPF5027TU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FJPF5027TU?

FJPF5027TU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FJPF5027TU order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for FJPF5027TU?

For technical support, including FJPF5027TU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FJPF5027TU requirements.

6.How does Aetrix verify that FJPF5027TU is sourced from the original manufacturer or authorized distributors?

All FJPF5027TU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that FJPF5027TU meets industry standards.

7.What is the process for return or replacement of FJPF5027TU?

All FJPF5027TU units undergo pre-shipment inspection (PSI). If there is an issue with FJPF5027TU, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The FJPF5027TU part is unused and in its original packaging.

Return procedure for FJPF5027TU:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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