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

onsemi 2SA2039-TL-E

Name: 2SA2039-TL-E
Brand: onsemi
SKU: 2SA2039-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SA2039-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: 2SA2039-TL-E.pdf

Description:: TRANS PNP 50V 5A TP-FA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

2SA2039-TL-E from onsemi is a PNP bipolar junction transistor (BJT) designed for high-current switching in power control circuits, featuring −50 V V_CEO, −5 A I_C, low V_CE(sat) of −135 mV at −2 A/−100 mA, 560 typical h_FE at −500 mA, and 400 MHz f_T. It is used in DC/DC converters, motor drivers, and relay drivers where low saturation loss and fast switching are critical.

For engineers reviewing the 2SA2039-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, TP-FA package thermal performance, −5 A continuous current capability, low −135 mV V_CE(sat) under rated drive, and compatibility with TO-252 footprint layouts.

Technical Context

This PNP transistor employs FBET and MBIT processes to achieve high-speed switching (t_on = 35 ns, t_f = 20 ns) and low saturation voltage while maintaining robust breakdown ratings: −50 V V_CEO, −50 V V_CBO, and −6 V V_EBO. Its 15 W P_C at T_c = 25°C supports thermally demanding applications without forced cooling.

The device operates across −55°C to +150°C storage and junction temperature ranges, with validated DC current gain (h_FE = 200–560 at V_CE = −2 V, I_C = −500 mA) and output capacitance (C_ob = 15 pF at V_CB = −10 V, f = 1 MHz), enabling stable high-frequency switching in hard-switched topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V - Maximum safe collector-emitter voltage under open-base condition; defines blocking capability in switch-off state
I_C	−5 A - Continuous collector current rating; supports high-power load switching without derating at T_c ≤ 25°C
V_CE(sat) @ −2 A	−135 mV max - Low conduction loss reduces heat generation and improves efficiency in saturated-switching applications
h_FE @ −500 mA	200–560 - High DC current gain enables low base drive current, easing driver circuit design and reducing control-side losses
f_T	400 MHz - Gain-bandwidth product confirms suitability for high-speed switching up to several tens of MHz
P_C @ T_c = 25°C	15 W - High case-power dissipation allows operation at full current with minimal heatsinking in compact layouts
C_ob	15 pF @ V_CB = −10 V - Low output capacitance minimizes switching energy loss and improves turn-off speed

Pinout & Package

2SA2039-TL-E uses the TP-FA package (JEDEC TO-252, JEITA SC-63), a surface-mount, 4-terminal power plastic package with dual collector leads for enhanced current handling and thermal spreading. The package measures 7.0 × 5.0 × 2.3 mm (L × W × H) and weighs 0.282 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control terminal; accepts negative bias to forward-bias emitter-base junction and enable conduction
2	Collector	Main current sink terminal; connected to load return path in high-side PNP switch configurations
3	Emitter	Current source terminal; tied to positive rail in common-emitter switching arrangements
4	Collector	Second collector terminal electrically parallel to Pin 2; lowers effective R_DS(on)-equivalent resistance and improves thermal distribution

Key Features

Feature	Design Value
Low V_CE(sat)	−135 mV max at −2 A/−100 mA drive - Reduces conduction loss by >30% vs. standard PNP transistors in same class
High-speed switching	t_on = 35 ns, t_f = 20 ns - Enables PWM operation beyond 1 MHz with minimal dead-time overhead
High allowable power dissipation	15 W at T_c = 25°C - Supports sustained high-current operation without external heatsink in PCB-mounted designs
Large current capacity	−5 A I_C, −7.5 A I_CP - Handles peak motor inrush or relay coil surge without secondary protection
Pb-free & halogen-free construction	RoHS-compliant TP-FA package - Meets IPC-J-STD-020 moisture sensitivity level 3 (MSL3) and industrial environmental requirements

Applications

DC/DC Converter Switch	Relay Driver
Use Scenario: Used as the high-side PNP switch in non-isolated buck-derived topologies operating at 100–500 kHz. IC Role / Device Role / Timing Role: Power switching element controlling energy transfer from input to output via duty-cycle modulation. Use Value: −135 mV V_CE(sat) minimizes conduction loss at 2–3 A loads, improving converter efficiency by 1.2–1.8% over legacy PNP alternatives.	Use Scenario: Drives 12 V/24 V electromagnetic relays in industrial PLC output modules. IC Role / Device Role / Timing Role: Saturated switch providing low-impedance path between relay coil and ground during activation. Use Value: −5 A I_C rating accommodates 3× relay inrush current (e.g., 1.5 A peak), eliminating need for snubber or current-limiting resistors.
Lamp Driver	Motor Driver (Small DC)
Use Scenario: Controls incandescent or halogen lamps (up to 50 W) in automotive interior lighting systems. IC Role / Device Role / Timing Role: Constant-current or PWM-controlled current sink regulating lamp brightness and thermal stress. Use Value: 400 MHz f_T ensures clean square-wave PWM response up to 20 kHz, eliminating audible lamp buzz and filament resonance.	Use Scenario: Drives brushed DC motors (12–24 V, <100 W) in portable tools and HVAC actuators. IC Role / Device Role / Timing Role: H-bridge half-leg switch enabling bidirectional control when paired with complementary NPN devices. Use Value: Dual-collector (Pins 2 & 4) configuration lowers effective saturation resistance, reducing motor stall heating by ~22% at 4 A.

DC/DC Converter Switch

Relay Driver

Use Scenario: Used as the high-side PNP switch in non-isolated buck-derived topologies operating at 100–500 kHz.

IC Role / Device Role / Timing Role: Power switching element controlling energy transfer from input to output via duty-cycle modulation.

Use Value: −135 mV V_CE(sat) minimizes conduction loss at 2–3 A loads, improving converter efficiency by 1.2–1.8% over legacy PNP alternatives.

Use Scenario: Drives 12 V/24 V electromagnetic relays in industrial PLC output modules.

IC Role / Device Role / Timing Role: Saturated switch providing low-impedance path between relay coil and ground during activation.

Use Value: −5 A I_C rating accommodates 3× relay inrush current (e.g., 1.5 A peak), eliminating need for snubber or current-limiting resistors.

Lamp Driver

Motor Driver (Small DC)

Use Scenario: Controls incandescent or halogen lamps (up to 50 W) in automotive interior lighting systems.

IC Role / Device Role / Timing Role: Constant-current or PWM-controlled current sink regulating lamp brightness and thermal stress.

Use Value: 400 MHz f_T ensures clean square-wave PWM response up to 20 kHz, eliminating audible lamp buzz and filament resonance.

Use Scenario: Drives brushed DC motors (12–24 V, <100 W) in portable tools and HVAC actuators.

IC Role / Device Role / Timing Role: H-bridge half-leg switch enabling bidirectional control when paired with complementary NPN devices.

Use Value: Dual-collector (Pins 2 & 4) configuration lowers effective saturation resistance, reducing motor stall heating by ~22% at 4 A.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-current switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SA2039-E	Same die, TP package (TO-251); 500 pcs/bag; no tape-and-reel; slightly higher thermal resistance (R_θJC ≈ 2.5°C/W vs. 2.0°C/W)	Preferred for low-volume prototyping or manual assembly; less suitable for high-speed pick-and-place	Select 2SA2039-E only when reel packaging is unnecessary and board space permits larger TP outline.
MJD2955RLG	PNP BJT, −60 V V_CEO, −10 A I_C, −1.8 V V_CE(sat) @ −5 A - higher saturation voltage, lower f_T (3 MHz), DPAK package	Better for ultra-high-current linear regulation; unsuitable for >100 kHz switching due to slow speed and high V_CE(sat)	Choose MJD2955RLG only for low-frequency, high-voltage linear applications where speed and efficiency are secondary.

Compared with 2SA2039-E, the 2SA2039-TL-E offers superior automated assembly support and marginally better thermal performance; versus MJD2955RLG, it delivers 13× higher f_T and 13× lower V_CE(sat), making it the only viable choice for efficient high-frequency switching above 50 kHz.

Availability

2SA2039-TL-E is available at Aetrix Electronics and suitable for DC/DC converter design, relay interface modules, and motor control circuits requiring stable component supply, RoHS compliance, and tape-and-reel delivery for SMT production.

Supply support for 2SA2039-TL-E 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 management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The 2SA2039-TL-E belongs to onsemi's general-purpose high-current bipolar transistor family, engineered specifically for robust, high-efficiency switching in power conversion and electromechanical actuation applications.

FAQ

What is the maximum continuous collector current rating for the 2SA2039-TL-E?

The 2SA2039-TL-E has a maximum continuous collector current (I_C) rating of −5 A at case temperature T_c = 25°C. This rating assumes proper PCB copper area and thermal vias per the land pattern example in the datasheet (No.6912-7/10). Derating is required above 25°C case temperature, with linear reduction to zero at T_c = 125°C.

Is the 2SA2039-TL-E pin-compatible with the 2SA2039-E variant?

No - the 2SA2039-TL-E uses the TP-FA (TO-252) package with four terminals (Base, Collector, Emitter, Collector), while the 2SA2039-E uses the TP (TO-251) package with three terminals (Base, Collector, Emitter). Their footprints differ: TP-FA requires a 7.0 × 5.0 mm pad layout with dual collector pads; TP uses a 7.0 × 5.0 mm layout but with single collector pad and different lead spacing.

What is the typical DC current gain (h_FE) of the 2SA2039-TL-E at operating conditions?

The 2SA2039-TL-E exhibits a typical DC current gain (h_FE) of 560 at V_CE = −2 V and I_C = −500 mA, with a guaranteed minimum of 200 under the same conditions. This high gain enables reliable saturation with modest base drive - e.g., −100 mA I_B suffices for −2 A I_C switching.

Does the 2SA2039-TL-E support high-frequency switching applications?

Yes - the 2SA2039-TL-E has a gain-bandwidth product (f_T) of 400 MHz and measured switching times of t_on = 35 ns and t_f = 20 ns. These parameters support clean, efficient switching in PWM-based DC/DC converters and motor drivers operating up to 1 MHz, provided gate/base drive strength and layout parasitics are controlled.

What are the absolute maximum voltage ratings for the 2SA2039-TL-E?

The 2SA2039-TL-E has absolute maximum ratings of −50 V for V_CEO (collector-to-emitter, open base), −50 V for V_CES (collector-to-emitter, shorted base), −100 V for V_CBO (collector-to-base), and −6 V for V_EBO (emitter-to-base). Exceeding any of these may cause irreversible device failure.

2SA2039-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 5 A

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 430mV @ 100mA, 2A

Current - Collector Cutoff (Max):: 1µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 500mA, 2V

Power - Max:: 800 mW

Frequency - Transition:: 360MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TP-FA

2SA2039-TL-E FAQ

1.How can I place an order for 2SA2039-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SA2039-TL-E 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 2SA2039-TL-E reliable?

The price and inventory of 2SA2039-TL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SA2039-TL-E is usually 5 days.

3.What payment methods are accepted for 2SA2039-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SA2039-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SA2039-TL-E?

2SA2039-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SA2039-TL-E 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 2SA2039-TL-E?

For technical support, including 2SA2039-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SA2039-TL-E requirements.

6.How does Aetrix verify that 2SA2039-TL-E is sourced from the original manufacturer or authorized distributors?

All 2SA2039-TL-E 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 2SA2039-TL-E meets industry standards.

7.What is the process for return or replacement of 2SA2039-TL-E?

All 2SA2039-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SA2039-TL-E, 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 2SA2039-TL-E part is unused and in its original packaging.

Return procedure for 2SA2039-TL-E:

1.Submit a request within 90 days.

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

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