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

STMicroelectronics TIP110

Name: TIP110
Brand: STMicroelectronics
SKU: TIP110
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TIP110

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-220-3

Datasheet:: TIP110.pdf

Description:: TRANS NPN DARL 60V 2A TO-220

Quantity:: RFQ Add To RFQ list

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Inventory:5,712

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Product details

Overview

TIP110 from STMicroelectronics is a silicon NPN power Darlington transistor in monolithic configuration, rated for 60 V V_CEO, 2 A continuous collector current, and 50 W total dissipation at T_case ≤ 25 °C, with integrated antiparallel collector-emitter diode - used in medium-power linear regulators and industrial switching circuits.

For engineers reviewing the TIP110 datasheet, TIP110 pinout, TIP110 application, or TIP110 equivalent, key selection criteria include its Darlington h_FE ≥ 1000 at I_C = 1 A, V_CE(sat) = 2.5 V at I_C = 2 A / I_B = 8 mA, and TO-220 package thermal resistance R_thj-case = 2.5 °C/W.

Technical Context

The TIP110 implements a monolithic Darlington pair with on-chip base resistors (R1 ≈ 7 kΩ, R2 ≈ 230 Ω), enabling high DC current gain without external bias components. It integrates an antiparallel collector-emitter diode for freewheeling in inductive load switching.

Designed for linear and switching operation up to 150 °C junction temperature, it supports pulsed operation (300 µs, 1.5% duty cycle) and features safe operating area (SOA) derating per ST's published curves.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	60 V - Maximum collector-emitter voltage before breakdown under open-base condition; defines maximum supply rail in switching applications.
I_C	2 A - Continuous collector current rating; sets upper limit for sustained load drive capability.
h_FE	≥1000 @ I_C = 1 A - High DC current gain reduces required base drive current, simplifying driver stage design.
V_CE(sat)	2.5 V @ I_C = 2 A, I_B = 8 mA - Saturation voltage determines conduction loss and heat generation in switching mode.
R_thj-case	2.5 °C/W - Junction-to-case thermal resistance enables thermal design using heatsink interface calculations.
Integrated Diode	Antiparallel C–E diode - Provides built-in flyback path for inductive loads, eliminating need for external freewheel diode.

Pinout & Package

Package: TO-220 (Jedec standard, 3-lead, vertical mounting, metal tab connected to collector).

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitting terminal of Darlington pair	Reference node for load return path; electrically isolated from case.
2 (Base)	Control input for Darlington pair	Drives internal dual-transistor cascade; requires ~8 mA for full saturation at 2 A load.
3 (Collector / Tab)	Main current output and thermal interface	Connected to metal tab; must be electrically insulated from heatsink if not referenced to system ground.

Key Features

Feature	Design Value
Monolithic Darlington structure	Single-die integration eliminates interconnect parasitics and ensures matched transistor characteristics.
On-chip base resistors	R1 ≈ 7 kΩ and R2 ≈ 230 Ω enable direct TTL/CMOS-compatible base drive without external bias network.
Integrated antiparallel diode	Eliminates discrete flyback diode in relay, solenoid, and motor driver designs - reducing BOM count and PCB area.
TO-220 mechanical robustness	Rated for industrial environments with 150 °C max junction temperature and -65 °C to +150 °C storage range.

Applications

Relay Drivers

DC Motor Control

Use Scenario: Driving 24 V, 1.5 A electromagnetic relays in PLC output modules.

IC Role / Device Role / Timing Role: Power switch controlling coil energization/de-energization with fast turn-off via integrated diode.

Use Value: Eliminates external flyback diode; 2.5 V V_CE(sat) limits power loss to 3.75 W at full load, compatible with passive heatsinking.

Use Scenario: H-bridge low-side switch for bidirectional 12 V brushed DC motors in industrial actuators.

IC Role / Device Role / Timing Role: NPN Darlington switch providing high-current sinking path during PWM on-time.

Use Value: h_FE ≥ 1000 allows microcontroller GPIO direct drive; SOA curve supports 100 ms inductive surge currents up to 4 A.

Linear Regulator Pass Element

Switch-Mode Power Supply Output Stage

Use Scenario: Series pass transistor in adjustable 5–15 V, 1.2 A linear regulator for test equipment power rails.

IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output by dissipating excess input-output differential.

Use Value: 50 W P_tot at T_case = 25 °C enables stable 1.2 A delivery with ≤ 10 V dropout at ambient ≤ 60 °C using standard TO-220 heatsink.

Use Scenario: Primary-side switch in 48 V input, 12 V/2 A offline flyback converter for industrial sensors.

IC Role / Device Role / Timing Role: Hard-switched power transistor operating in discontinuous conduction mode (DCM) at 60 kHz.

Use Value: Integrated diode clamps inductive kickback during off-time; V_CEO = 60 V provides 20% margin over 48 V nominal input with line surges.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MPSA13	Lower V_CEO (30 V), lower I_C (0.5 A), TO-92 package, no integrated diode	Suitable only for low-voltage, low-power signal amplification or small relay driving	Select when board space is critical and load requirements are ≤ 30 V / 500 mA; requires external flyback diode.
STMicroelectronics TIP120	Same TO-220 package, higher V_CEO (100 V), same h_FE and V_CE(sat), identical internal diode	Direct upgrade path for 60–100 V bus applications requiring extended voltage margin	Choose for new designs targeting 100 V systems or where long-term availability of 100 V-rated Darlingtons is preferred.

Compared with MPSA13 and TIP120, the TIP110 offers optimal balance of 60 V rating, 2 A current, integrated diode, and TO-220 thermal performance - making it ideal for cost-sensitive 24–48 V industrial switching where voltage headroom is constrained but power exceeds small-signal devices.

Availability

TIP110 is available at Aetrix Electronics and suitable for relay drivers, DC motor control, linear regulator pass elements, and switch-mode power supply output stages requiring stable component supply across industrial production cycles.

Supply support for TIP110 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 TIP110 belongs to ST's legacy bipolar power transistor product line, engineered specifically for ruggedized medium-power linear and switching applications in factory automation, power supplies, and electromechanical control systems.

FAQ

Is the TIP110 pin-compatible with the TIP120?

Yes - both use identical TO-220 package pinout (Emitter-Base-Collector, left-to-right with tab facing outward). However, TIP120 has higher V_CEO (100 V vs. 60 V) and same electrical specs otherwise, allowing drop-in replacement only if voltage margin permits.

Does the integrated diode conduct in the forward direction from collector to emitter?

Yes - the antiparallel diode is connected cathode-to-collector and anode-to-emitter, enabling forward conduction from collector to emitter during inductive flyback, which protects the transistor from voltage spikes.

What is the maximum allowable base current for continuous operation?

The absolute maximum base current is 50 mA. For reliable continuous operation at I_C = 2 A, ST specifies I_B = 8 mA - exceeding this risks thermal overstress due to base region power dissipation and potential second breakdown.

Can the TIP110 be used in parallel configurations for higher current?

No - monolithic Darlingtons exhibit poor current sharing due to positive thermal feedback and parameter spread. Parallel operation is not recommended; use a single higher-rated device like the TIP142 (10 A) instead.

TIP110 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN - Darlington

Current - Collector (Ic) (Max):: 2 A

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 2.5V @ 8mA, 2A

Current - Collector Cutoff (Max):: 2mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 1000 @ 1A, 4V

Power - Max:: 2 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

TIP110 FAQ

1.How can I place an order for TIP110 through Aetrix?

Please submit a Request for Quotation (RFQ) for TIP110 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 TIP110 reliable?

The price and inventory of TIP110 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP110 is usually 5 days.

3.What payment methods are accepted for TIP110?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP110 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TIP110?

TIP110 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TIP110 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 TIP110?

For technical support, including TIP110 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP110 requirements.

6.How does Aetrix verify that TIP110 is sourced from the original manufacturer or authorized distributors?

All TIP110 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 TIP110 meets industry standards.

7.What is the process for return or replacement of TIP110?

All TIP110 units undergo pre-shipment inspection (PSI). If there is an issue with TIP110, 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 TIP110 part is unused and in its original packaging.

Return procedure for TIP110:

1.Submit a request within 90 days.

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

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