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

onsemi TIP140G

Name: TIP140G
Brand: onsemi
SKU: TIP140G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TIP140G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-247-3

Datasheet:: TIP140G.pdf

Description:: TRANS NPN DARL 60V 10A TO-247-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TIP140G from onsemi is an NPN silicon Darlington power transistor designed for high-current, low-frequency switching and linear amplifier applications. It delivers 10 A continuous collector current, sustains 60 V collector-emitter voltage, and achieves minimum DC current gain (h_FE) of 1000 at I_C = 5.0 A and V_CE = 4 V - enabling efficient driver-stage amplification in industrial motor controls and relay drivers.

For engineers reviewing the TIP140G datasheet, pinout, applications, or equivalent options, key selection considerations include its monolithic Darlington structure with built-in base-emitter shunt resistor, TO-247 package thermal performance (R_JC = 1.0 °C/W), safe operating area under inductive loads, and Pb-free compliance per JESD97.

Technical Context

The TIP140G integrates two cascaded NPN transistors in a monolithic die with an internal base-emitter shunt resistor to stabilize bias and reduce external component count. Its Darlington configuration provides high current gain while maintaining manageable base drive requirements - critical for microcontroller-driven switching where I_B ≤ 0.5 A suffices for full saturation.

It operates within −65 °C to +150 °C junction temperature range and features 125 W total power dissipation at T_C = 25 °C. The device is rated for unclamped inductive switching up to 100 mJ and exhibits defined delay (t_d = 0.15 µs), rise (t_r = 0.55 µs), storage (t_s = 2.5 µs), and fall (t_f = 2.5 µs) times under standardized resistive-load test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO(sus)	60 Vdc minimum - defines maximum safe collector-emitter voltage under open-base switching conditions, suitable for 48 V DC bus interfaces.
I_C (continuous)	10 Adc - supports high-power load switching without forced cooling in heatsink-mounted configurations.
h_FE (min)	1000 @ I_C = 5.0 A, V_CE = 4 V - enables low base current drive (e.g., ~5 mA) for full conduction, reducing MCU GPIO loading.
V_CE(sat)	2.0 V max @ I_C = 5.0 A, I_B = 10 mA - limits conduction loss to ≤10 W at rated current, easing thermal design.
R_JC	1.0 °C/W - allows direct mounting to heatsinks for predictable junction temperature control in sealed enclosures.
P_D	125 W @ T_C = 25 °C - specifies maximum steady-state power handling before thermal derating begins.

Pinout & Package

Package: TO-247 (Case 340L, Style 3), Pb-free, through-hole mount with isolated collector tab. Dimensions comply with JEDEC MS-003AC.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node requiring current-limited drive; internal shunt resistor stabilizes turn-off and prevents leakage-induced false triggering.
2	Collector	Main high-current output terminal; electrically connected to metal tab for thermal and electrical grounding in PCB layout.
3	Emitter	Current return path; referenced to system ground in low-side switch configurations; must handle full load current with minimal trace resistance.
4	Collector	Second collector connection - internally tied to Pin 2, providing redundant current path and improved thermal spreading across the package tab.

Key Features

Feature	Design Value
Monolithic Darlington construction	Integrates driver and output transistors on one die, eliminating interconnect parasitics and ensuring matched thermal behavior for stable gain.
Built-in base-emitter shunt resistor	Reduces required external base resistor count and improves turn-off speed by actively discharging base charge during gate-off transitions.
125 W power dissipation capability	Enables operation at full 10 A load without active cooling when mounted on ≥100 cm² aluminum heatsink with thermal interface material.
Unclamped inductive switching rating	Rated for 100 mJ energy absorption - supports reliable operation driving solenoids, contactors, and small DC motors without snubber networks.
Pb-free packaging (G suffix)	Complies with RoHS Directive 2011/65/EU and JESD97; compatible with lead-free reflow and wave soldering profiles per IPC-J-STD-020.

Applications

Industrial Relay Drivers	DC Motor Speed Controllers
Use Scenario: Driving 24–48 V DC electromagnetic relays with coil currents up to 8 A in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: High-gain NPN Darlington switch providing galvanic isolation between low-voltage logic and high-current inductive loads. Use Value: Eliminates need for discrete base biasing components and reduces PCB footprint by 40% versus dual-transistor solutions.	Use Scenario: Pulse-width modulated (PWM) control of brushed DC motors in conveyor systems and automated gates. IC Role / Device Role / Timing Role: Low-frequency power switch operating below 5 kHz, handling peak currents >10 A during startup and stall conditions. Use Value: Sustains 60 V V_CEO(sus) margin above 48 V nominal bus, preventing avalanche failure during back-EMF transients.
Linear Audio Amplifier Stages	High-Current Power Supplies
Use Scenario: Output stage in Class AB audio amplifiers delivering ≥50 W into 4 Ω loads with minimal crossover distortion. IC Role / Device Role / Timing Role: Linear-mode emitter-follower configured transistor delivering high current slew rate and low output impedance. Use Value: h_FE ≥ 1000 ensures stable bias point over temperature, reducing thermal runaway risk in quasi-complementary designs.	Use Scenario: Series pass element in adjustable linear power supplies delivering up to 8 A at 3–30 V output. IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output via feedback loop; operates continuously in active region. Use Value: R_JC = 1.0 °C/W enables precise junction temperature monitoring using case-mounted thermistors for overtemperature shutdown.

Industrial Relay Drivers

DC Motor Speed Controllers

Use Scenario: Driving 24–48 V DC electromagnetic relays with coil currents up to 8 A in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: High-gain NPN Darlington switch providing galvanic isolation between low-voltage logic and high-current inductive loads.

Use Value: Eliminates need for discrete base biasing components and reduces PCB footprint by 40% versus dual-transistor solutions.

Use Scenario: Pulse-width modulated (PWM) control of brushed DC motors in conveyor systems and automated gates.

IC Role / Device Role / Timing Role: Low-frequency power switch operating below 5 kHz, handling peak currents >10 A during startup and stall conditions.

Use Value: Sustains 60 V V_CEO(sus) margin above 48 V nominal bus, preventing avalanche failure during back-EMF transients.

Linear Audio Amplifier Stages

High-Current Power Supplies

Use Scenario: Output stage in Class AB audio amplifiers delivering ≥50 W into 4 Ω loads with minimal crossover distortion.

IC Role / Device Role / Timing Role: Linear-mode emitter-follower configured transistor delivering high current slew rate and low output impedance.

Use Value: h_FE ≥ 1000 ensures stable bias point over temperature, reducing thermal runaway risk in quasi-complementary designs.

Use Scenario: Series pass element in adjustable linear power supplies delivering up to 8 A at 3–30 V output.

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

Use Value: R_JC = 1.0 °C/W enables precise junction temperature monitoring using case-mounted thermistors for overtemperature shutdown.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127G	TO-263 surface-mount package; lower P_D = 35 W; V_CEO = 100 V; h_FE min = 1000 @ I_C = 2 A.	Suitable for space-constrained PCBs but requires thermal vias and copper pour; not recommended for >5 A continuous loads.	Select MJD127G only when board area is critical and peak current remains ≤5 A with aggressive thermal management.
TIP120G	Same TO-220 package; lower V_CEO = 60 V; same h_FE spec; P_D = 65 W; R_JC = 1.92 °C/W.	Limited to lower-power switching (<4 A continuous); higher thermal resistance demands larger heatsinks for equivalent loads.	Choose TIP120G for cost-sensitive, lower-current applications where TO-247 mechanical robustness and thermal headroom are unnecessary.

Compared with TIP140G, MJD127G offers surface-mount compatibility but sacrifices 72% power handling capacity, while TIP120G retains identical voltage rating but halves thermal performance - making TIP140G the optimal choice for high-reliability, high-current industrial switching where thermal margin and rugged package construction are essential.

Availability

TIP140G is available at Aetrix Electronics and suitable for industrial relay drivers, DC motor controllers, and linear power supply designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for TIP140G 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 specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The TIP140G belongs to onsemi's legacy silicon power transistor family engineered for rugged, high-current linear and switching applications - emphasizing reliability, thermal robustness, and ease of integration in industrial control hardware.

FAQ

What is the maximum continuous collector current rating for the TIP140G?

The TIP140G is rated for 10 A continuous collector current (I_C) at case temperature T_C = 25 °C. Derating is required above this temperature per Figure 10 in the datasheet, with zero dissipation at approximately 175 °C ambient. This rating assumes proper heatsinking and adherence to the SOA curve in Figure 6.

Does the TIP140G have a built-in base-emitter resistor, and what is its function?

Yes, the TIP140G incorporates a monolithic base-emitter shunt resistor. Its primary function is to improve turn-off characteristics by providing a discharge path for stored base charge, thereby reducing storage time and preventing unintended conduction due to leakage currents - especially important in microcontroller-driven switching circuits.

Can the TIP140G be used in linear amplifier applications, and what design considerations apply?

Yes, the TIP140G is explicitly designed for both switching and linear amplifier use. For linear operation, ensure strict adherence to the Active-Region Safe Operating Area (SOA) curve in Figure 6, maintain junction temperature below 150 °C using appropriate heatsinking, and avoid operation near second breakdown boundaries during transient overload conditions.

What is the collector-emitter sustaining voltage (V_CEO(sus)) specification for the TIP140G?

The TIP140G has a minimum collector-emitter sustaining voltage V_CEO(sus) of 60 Vdc at I_C = 30 mA and I_B = 0. This parameter reflects the device's ability to block voltage during switching transitions and defines the upper limit for reliable operation in 48 V DC systems with safety margin.

Is the TIP140G pin-compatible with other devices in the TIP14x series, such as the TIP141G or TIP142G?

No - while all TIP14x devices share identical pinout and package (TO-247), they differ in voltage rating: TIP140G is rated for 60 V, TIP141G for 80 V, and TIP142G for 100 V. Substituting higher-voltage variants is electrically safe but may incur cost and availability penalties; substituting lower-voltage variants risks catastrophic failure under overvoltage stress.

TIP140G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-247-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN - Darlington

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

Voltage - Collector Emitter Breakdown (Max):: 60 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:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247-3

TIP140G FAQ

1.How can I place an order for TIP140G through Aetrix?

Please submit a Request for Quotation (RFQ) for TIP140G 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 TIP140G reliable?

The price and inventory of TIP140G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TIP140G is usually 5 days.

3.What payment methods are accepted for TIP140G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TIP140G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TIP140G?

TIP140G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TIP140G 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 TIP140G?

For technical support, including TIP140G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TIP140G requirements.

6.How does Aetrix verify that TIP140G is sourced from the original manufacturer or authorized distributors?

All TIP140G 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 TIP140G meets industry standards.

7.What is the process for return or replacement of TIP140G?

All TIP140G units undergo pre-shipment inspection (PSI). If there is an issue with TIP140G, 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 TIP140G part is unused and in its original packaging.

Return procedure for TIP140G:

1.Submit a request within 90 days.

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

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