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

STMicroelectronics TIP147

Name: TIP147
Brand: STMicroelectronics
SKU: TIP147
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TIP147

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-247-3

Datasheet:: TIP147.pdf

Description:: TRANS PNP DARL 100V 10A TO-247

Quantity:: RFQ Add To RFQ list

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Inventory:1,125

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Product details

Overview

TIP147 from STMicroelectronics is a PNP complementary power Darlington transistor in TO-247 package, featuring monolithic Darlington configuration, integrated antiparallel collector-emitter diode, 100 V V_CEO, 10 A continuous collector current, and 125 W total dissipation at T_case = 25 °C - used in high-current linear regulators and industrial motor control stages.

For engineers reviewing the TIP147 datasheet, TIP147 pinout, TIP147 application, or TIP147 equivalent, key selection factors include its PNP polarity, low V_CE(sat) (2 V @ IC = 5 A, IB = 10 mA), high h_FE (min 1000 @ IC = 5 A), safe operating area for switching loads, and thermal resistance (R_thJC ≤ 1 °C/W).

Technical Context

The TIP147 implements a planar "base island" layout with monolithic Darlington pairing, delivering high DC current gain and low saturation voltage. Its integrated antiparallel collector-emitter diode enables bidirectional energy handling in inductive switching circuits without external flyback protection.

Rated for 100 V blocking in both V_CBO and V_CEO modes with negative polarity convention for PNP operation, it supports linear and switching operation up to 150 °C junction temperature and handles 20 A peak collector current under pulsed conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - maximum collector-emitter voltage with base open; defines safe linear/switching headroom in PNP high-side configurations
I_C (continuous)	10 A - continuous collector current rating at T_case = 25 °C; sets baseline thermal design for heatsink sizing
V_CE(sat)	2 V @ IC = 5 A, IB = 10 mA - low saturation voltage minimizes conduction loss in high-current switching applications
h_FE	1000 min @ IC = 5 A, V_CE = 4 V - high DC gain reduces required base drive current and simplifies driver stage design
R_thJC	≤ 1 °C/W - junction-to-case thermal resistance enables efficient heat transfer to heatsink in high-power linear regulation
t_off	4 µs - turn-off time under resistive load (IC = 10 A, RL = 3 Ω); determines maximum practical switching frequency

Pinout & Package

Package: TO-247 - three-terminal through-hole power package with isolated metal tab (collector), suitable for bolt-down heatsinking and industrial PCB mounting.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Control input	Receives base current to enable Darlington pair; requires current-limiting resistor due to low input impedance
2 (Collector)	Power output terminal	Connected to heatsink via metal tab; electrically tied to case; must be isolated from other potentials unless referenced to ground
3 (Emitter)	Power return path	Serves as common emitter node; carries full load current and defines reference for base drive in PNP high-side switch topology

Key Features

Feature	Design Value
Monolithic Darlington configuration	Single-die integration of driver and output transistors ensures matched thermal behavior and eliminates interconnect parasitics
Integrated antiparallel C–E diode	Eliminates need for external flyback diode in inductive load switching, reducing BOM count and board space
Planar "base island" technology	Enables stable high-current operation with improved ruggedness and reduced second breakdown risk vs. epitaxial base
ECOPACK® compliant packaging	Meets RoHS and halogen-free requirements without compromising thermal or mechanical performance in TO-247 form factor

Applications

Industrial Motor Control

High-Current Linear Regulator

Use Scenario: Driving 5–15 A DC motors in conveyor systems and valve actuators using complementary Darlington H-bridge stages.

IC Role / Device Role / Timing Role: PNP high-side switch in push-pull output stage; provides controlled current sourcing during forward rotation.

Use Value: Low V_CE(sat) reduces heat generation at 10 A load, while high h_FE eases base drive design from microcontroller GPIOs.

Use Scenario: Pass element in adjustable 0–30 V, 10 A bench power supply with analog feedback loop.

IC Role / Device Role / Timing Role: Series pass transistor regulating output voltage; dissipates up to 125 W under worst-case dropout conditions.

Use Value: R_thJC ≤ 1 °C/W allows direct mounting to large heatsink, enabling stable 10 A continuous output without thermal shutdown.

Switched-Mode Power Supply (SMPS) Auxiliary Stage

Welding Equipment Output Stage

Use Scenario: High-side switch in auxiliary bias winding rectifier or gate driver supply in 1–3 kW offline SMPS.

IC Role / Device Role / Timing Role: PNP Darlington controlling auxiliary DC bus; operates in saturated switching mode at <100 kHz.

Use Value: 4 µs t_off supports reliable switching at 100 kHz with margin, while integrated C–E diode clamps inductive kickback.

Use Scenario: Primary output switch in single-phase AC/DC welding inverters delivering pulsed 15–20 A arc current.

IC Role / Device Role / Timing Role: Main power switch in inverter leg; handles repetitive 20 A peak current pulses with fast turn-on/turn-off.

Use Value: Safe operating area (SOA) curve validated to 100 V × 10 A DC and higher pulsed limits ensures robustness under short-circuit arc conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP power Darlington transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127	TO-220 package, lower I_C (8 A), higher R_thJC (2.5 °C/W), no integrated C–E diode	Not suitable for >10 A continuous or high-thermal-density layouts; requires external flyback diode	Select when cost-sensitive, lower-power, or space-constrained designs eliminate need for TO-247 thermal performance
BDX54C	TO-225AA package, same V_CEO (100 V), lower h_FE (750 min), no integrated C–E diode	Limited to <5 A continuous use due to thermal constraints; unsuitable for high-gain base-drive-limited circuits	Choose only if legacy footprint compatibility with TO-225AA is mandatory and SOA requirements are relaxed

Compared with MJD127 and BDX54C, the TIP147 delivers superior thermal capability (125 W vs. ≤65 W), built-in flyback protection, and higher current gain-making it the preferred choice for new 10 A+ industrial switching and linear power designs where reliability and board-level simplicity are critical.

Availability

TIP147 is available at Aetrix Electronics and suitable for industrial motor control, high-current linear regulators, switched-mode power supply auxiliary stages, and welding equipment output stages requiring stable component supply across multi-year production cycles.

Supply support for TIP147 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The TIP147 belongs to ST's high-power bipolar transistor product line, engineered specifically for ruggedized industrial power conversion, motor drive, and linear regulation where high current, low saturation, and thermal resilience are essential.

FAQ

Is the TIP147 pin-compatible with the TIP142?

Yes - TIP147 (PNP) and TIP142 (NPN) share identical TO-247 pinout (Base–Collector–Emitter), enabling complementary use in push-pull or H-bridge topologies without layout changes. Both feature matching voltage/current ratings and thermal specs, simplifying dual-transistor design reuse.

Does the integrated collector-emitter diode replace an external flyback diode in relay driving?

Yes - the monolithically integrated antiparallel diode provides bidirectional conduction between collector and emitter, fully replacing discrete flyback diodes in inductive load switching (e.g., relays, solenoids). It is rated for the device's full current and voltage limits, eliminating external component risk and layout complexity.

What is the recommended heatsink interface for TIP147 in linear regulator applications?

Use thermally conductive insulating pads (e.g., Sil-Pad 2000) or mica washers with silicone grease between the TO-247 metal tab (collector) and heatsink. Ensure mechanical torque ≤ 0.5 N·m on mounting screw to avoid die stress. For 125 W dissipation, a minimum 0.5 °C/W heatsink thermal resistance is required to maintain T_J ≤ 150 °C at 25 °C ambient.

Can TIP147 be used in parallel for higher current capacity?

No - Darlington transistors exhibit positive thermal feedback and unequal current sharing due to h_FE spread and V_BE mismatch. Parallel operation without individual emitter resistors leads to thermal runaway. ST does not recommend or characterize parallel use; instead, select higher-rated devices like ST's STGP10NC60KD for >10 A needs.

TIP147 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-247-3

Packaging:: Tube

Product Status:: Active

Transistor Type:: PNP - Darlington

Current - Collector (Ic) (Max):: 10 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 3V @ 40mA, 10A

Current - Collector Cutoff (Max):: 2mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 1000 @ 5A, 4V

Power - Max:: 125 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247

TIP147 FAQ

1.How can I place an order for TIP147 through Aetrix?

Please submit a Request for Quotation (RFQ) for TIP147 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 TIP147 reliable?

The price and inventory of TIP147 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP147 is usually 5 days.

3.What payment methods are accepted for TIP147?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP147 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TIP147?

TIP147 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TIP147 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 TIP147?

For technical support, including TIP147 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP147 requirements.

6.How does Aetrix verify that TIP147 is sourced from the original manufacturer or authorized distributors?

All TIP147 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 TIP147 meets industry standards.

7.What is the process for return or replacement of TIP147?

All TIP147 units undergo pre-shipment inspection (PSI). If there is an issue with TIP147, 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 TIP147 part is unused and in its original packaging.

Return procedure for TIP147:

1.Submit a request within 90 days.

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

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