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

onsemi TIP110

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

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Part No.:: TIP110

Manufacturer:: onsemi

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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Product details

Overview

TIP110 from ON Semiconductor is an NPN epitaxial silicon Darlington transistor in a TO-220 package, designed for medium-power linear and switching applications. It delivers h_FE ≥ 1000 at I_C = 1 A, V_CE = 4 V; V_CEO = 60 V; I_C = 2 A (DC); V_CE(sat) = 2.5 V at I_C = 2 A, I_B = 8 mA; and features monolithic construction with integrated base-emitter shunt resistors (R₁ ≈ 10 kΩ, R₂ ≈ 0.6 kΩ). It is commonly used in relay drivers, lamp dimmers, and motor controls.

For engineers reviewing the TIP110 datasheet, pinout, applications, or equivalent options, key selection considerations include its 60 V V_CEO, 2 A DC collector current capability, built-in bias resistors enabling single-resistor base drive, low saturation voltage under load, and TO-220 thermal performance up to 50 W at T_C = 25°C.

Technical Context

The TIP110 implements a two-stage monolithic NPN Darlington configuration with on-chip base-emitter shunt resistors (R₁ ≈ 10 kΩ, R₂ ≈ 0.6 kΩ) to ensure reliable turn-off and reduce external component count. Its high DC current gain (h_FE ≥ 1000 at I_C = 1 A) enables direct microcontroller GPIO driving without additional amplification stages.

It operates within a junction temperature range of –65°C to +150°C and is rated for industrial use. Absolute maximum ratings include V_CBO = 60 V, V_CEO = 60 V, V_EBO = 5 V, and P_C = 50 W at T_C = 25°C - confirming suitability for thermally constrained medium-power circuits requiring stable gain and low saturation loss.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	60 V - Maximum safe collector-emitter voltage before breakdown; defines upper limit for supply rail compatibility in switching designs.
h_FE	≥1000 @ I_C = 1 A, V_CE = 4 V - Enables direct logic-level drive with minimal base current (e.g., ~1 mA), reducing MCU I/O loading.
V_CE(sat)	2.5 V @ I_C = 2 A, I_B = 8 mA - Limits conduction loss to ≤5 W at full DC current, supporting efficient thermal management in TO-220.
I_C (DC)	2 A - Continuous collector current rating; sets usable load capacity for solenoids, small motors, and incandescent lamps.
P_C @ T_C = 25°C	50 W - Maximum dissipation at case temperature 25°C; requires heatsinking for sustained operation above ~10 W.
Integrated R₁/R₂	R₁ ≈ 10 kΩ, R₂ ≈ 0.6 kΩ - Provides guaranteed turn-off bias and stabilizes operating point without external components.

Pinout & Package

Package: TO-220 3L (Single Gauge), through-hole, vertical mounting with metal tab electrically connected to collector. Standard JEDEC outline with 3 leads: Base (lead 1), Collector (lead 2, tab), Emitter (lead 3).

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Input control terminal	Receives base current to activate Darlington pair; internal R₁/R₂ network ensures defined bias and fast turn-off.
2 (Collector)	High-current output node	Connected to metal tab; must be electrically isolated from heatsink unless common-collector topology is intended.
3 (Emitter)	Current return path	Serves as low-side switch reference; carries full load current and connects to system ground or load return.

Key Features

Feature	Design Value
Monolithic Darlington with integrated bias resistors	Eliminates need for external base pull-down and improves switching consistency across temperature and unit variance.
h_FE ≥ 1000 at 1 A	Reduces required base drive current by >10× versus standard power transistors, easing interface with 3.3 V/5 V logic.
V_CE(sat) = 2.5 V at 2 A	Keeps power dissipation below 5 W at full rated current, simplifying heatsink selection for continuous-duty applications.
TO-220 package with collector-tab connection	Enables direct mechanical and thermal attachment to heatsinks while maintaining electrical isolation via insulating hardware.

Applications

Relay Driver Circuits	Lamp Dimming Controls
Use Scenario: Driving 12–24 V electromagnetic relays with coil currents up to 1.5 A in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Low-side switch controlling relay coil energization/de-energization; provides galvanic isolation between logic and load sides. Use Value: Built-in base resistors prevent relay chatter during MCU reset or floating I/O states, improving system reliability without added components.	Use Scenario: Phase-angle dimming of 60–100 W incandescent lamps in residential and commercial lighting systems. IC Role / Device Role / Timing Role: Main switching element in TRIAC-triggered or direct AC-switching topologies; handles peak line-current surges. Use Value: High h_FE allows clean zero-crossing triggering with minimal gate-drive circuitry, reducing BOM cost and board space.
Motor Speed Controllers	DC Power Supply Regulators
Use Scenario: Linear speed control of 12 V brushed DC motors (e.g., fans, actuators) in HVAC and automation equipment. IC Role / Device Role / Timing Role: Series pass transistor in emitter-follower configuration, dissipating excess voltage as heat. Use Value: Low V_CE(sat) minimizes dropout loss at full load, extending thermal headroom and enabling compact heatsink design.	Use Scenario: Pass element in adjustable linear regulators delivering up to 2 A output current for analog sensor subsystems. IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output voltage via feedback loop; operates in active region. Use Value: Stable h_FE over temperature ensures predictable regulation accuracy and transient response without compensation complexity.

Relay Driver Circuits

Lamp Dimming Controls

Use Scenario: Driving 12–24 V electromagnetic relays with coil currents up to 1.5 A in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Low-side switch controlling relay coil energization/de-energization; provides galvanic isolation between logic and load sides.

Use Value: Built-in base resistors prevent relay chatter during MCU reset or floating I/O states, improving system reliability without added components.

Use Scenario: Phase-angle dimming of 60–100 W incandescent lamps in residential and commercial lighting systems.

IC Role / Device Role / Timing Role: Main switching element in TRIAC-triggered or direct AC-switching topologies; handles peak line-current surges.

Use Value: High h_FE allows clean zero-crossing triggering with minimal gate-drive circuitry, reducing BOM cost and board space.

Motor Speed Controllers

DC Power Supply Regulators

Use Scenario: Linear speed control of 12 V brushed DC motors (e.g., fans, actuators) in HVAC and automation equipment.

IC Role / Device Role / Timing Role: Series pass transistor in emitter-follower configuration, dissipating excess voltage as heat.

Use Value: Low V_CE(sat) minimizes dropout loss at full load, extending thermal headroom and enabling compact heatsink design.

Use Scenario: Pass element in adjustable linear regulators delivering up to 2 A output current for analog sensor subsystems.

IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output voltage via feedback loop; operates in active region.

Use Value: Stable h_FE over temperature ensures predictable regulation accuracy and transient response without compensation complexity.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BD679A	V_CEO = 80 V, h_FE = 750 min @ I_C = 1 A, TO-126 package, no integrated resistors	Requires external base resistor network; higher voltage rating but lower gain and smaller package thermal mass	Preferred where higher V_CEO is critical and PCB space is limited; not drop-in due to different pinout and biasing requirements
TIP120	V_CEO = 60 V, h_FE = 1000 min @ I_C = 1 A, identical TO-220 package and pinout, same internal resistor values	Functionally identical specification and mechanical form; fully interchangeable in existing designs	Valid second-source option with identical electrical and thermal behavior; suitable for supply chain diversification without redesign

Compared with BD679A and TIP120, the TIP110 offers guaranteed turn-off via integrated resistors and matches TIP120's performance exactly - making TIP120 a seamless alternative, while BD679A suits higher-voltage, space-constrained cases requiring external bias design.

Availability

TIP110 is available at Aetrix Electronics and suitable for relay drivers, lamp dimmers, motor controllers, and linear regulator pass elements requiring stable component supply, long-lifecycle support, and industrial-grade reliability.

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

ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensors, and discrete devices for automotive, industrial, cloud, and IoT applications.

The TIP110 belongs to ON Semiconductor's legacy power bipolar transistor family, originally developed by Fairchild and optimized for robust, cost-effective medium-power switching and linear regulation in industrial control systems.

FAQ

What is the maximum collector-emitter voltage rating for the TIP110?

The TIP110 has a maximum collector-emitter sustaining voltage (V_CEO(sus)) of 60 V under test conditions of I_C = 30 mA and I_B = 0. This rating defines the absolute upper limit for safe operation in switching applications and must not be exceeded even transiently. Derating is recommended for reliability in high-temperature or high-humidity environments.

Does the TIP110 require external base resistors for proper operation?

No - the TIP110 integrates monolithic base-emitter shunt resistors (R₁ ≈ 10 kΩ, R₂ ≈ 0.6 kΩ), eliminating the need for external pull-down or bias resistors. This ensures consistent turn-off behavior and prevents latch-up in microcontroller-driven circuits, distinguishing it from discrete transistor pairs like the 2N3055/MJ2955 combination.

What is the DC current gain (h_FE) of the TIP110 at 2 A collector current?

The TIP110 guarantees h_FE ≥ 500 at V_CE = 4 V and I_C = 2 A, per its official electrical characteristics table. This remains significantly higher than standard power transistors (e.g., 2N3055: h_FE ≈ 20–70), enabling efficient drive from low-current sources such as logic gates or op-amp outputs.

Can the TIP110 be used in linear regulator applications?

Yes - the TIP110 is qualified for linear operation with a maximum junction temperature of 150°C and P_C = 50 W at T_C = 25°C. Its low V_CE(sat) and stable h_FE support predictable dropout and thermal performance in series-pass configurations, provided adequate heatsinking is applied per the derating curve in Figure 6 of the datasheet.

Is the TIP110 pin-compatible with the TIP120?

Yes - the TIP110 and TIP120 share identical TO-220 package dimensions, pinout (Base–Collector–Emitter), internal resistor values (R₁ ≈ 10 kΩ, R₂ ≈ 0.6 kΩ), and core electrical specifications (V_CEO = 60 V, h_FE ≥ 1000 @ 1 A). They are functionally and mechanically interchangeable without layout or schematic changes.

TIP110 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

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:: -65°C ~ 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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