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

Toshiba Semiconductor and Storage 2SA2070(TE12L,F)

Name: 2SA2070(TE12L,F)
Brand: Toshiba Semiconductor and Storage
SKU: 2SA2070(TE12L,F)
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SA2070(TE12L,F)

Manufacturer:: Toshiba Semiconductor and Storage

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: 2SA2070(TE12L,F).pdf

Description:: TRANS PNP 50V 1A PW-MINI

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Product details

Overview

2SA2070(TE12L,F) from TOSHIBA is a silicon PNP epitaxial transistor designed for high-speed switching in DC-DC converters and power management circuits, featuring h_FE = 200–500 at I_C = −0.1 A, V_CE(sat) ≤ −0.20 V (I_C = −0.3 A, I_B = −0.01 A), and t_f = 70 ns (typ.), with −50 V V_CEO rating and SC-62 package.

For engineers reviewing the 2SA2070(TE12L,F) datasheet, 2SA2070(TE12L,F) pinout, 2SA2070(TE12L,F) application, or 2SA2070(TE12L,F) equivalent, key selection criteria include saturation voltage performance under pulsed base drive, thermal derating on FR4 boards, safe operating area limits at 100 µs–10 s pulse widths, and RoHS-compliant marking interpretation per Toshiba's Lot No. line convention.

Technical Context

The 2SA2070(TE12L,F) operates as a medium-power PNP bipolar junction transistor optimized for fast turn-off (t_f = 70 ns typ.) and low-loss saturation in hard-switched topologies. Its V_CE(sat) ≤ −0.20 V at I_C/I_B = 30 enables efficient current sinking in synchronous rectifier drivers and PWM control stages.

Thermal behavior is defined for mounting on FR4 (1.6 mm, 645 mm² Cu), with transient thermal resistance r_th(j-a) varying by pulse width - e.g., ~200°C/W at 100 µs, dropping to ~50°C/W at 10 ms - requiring explicit derating above 25°C ambient per Toshiba's Reliability Handbook guidelines.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−50 V: Maximum allowable collector-emitter voltage before breakdown in common-emitter configuration.
h_FE (I_C = −0.1 A)	200–500: Ensures stable base drive sizing for reliable saturation across production lots.
V_CE(sat)	≤ −0.20 V (I_C = −0.3 A, I_B = −0.01 A): Minimizes conduction loss in high-duty-cycle switching nodes.
t_f	70 ns (typ.): Enables >1 MHz switching in non-resonant DC-DC controllers without excessive switching loss.
C_ob	8 pF (V_CB = −10 V): Limits Miller capacitance impact on gate driver loading in complementary BJT stages.
P_C (t = 10 s)	2.0 W (FR4, 645 mm² Cu): Defines maximum continuous dissipation with standard PCB heatsinking.

Pinout & Package

Package: SC-62 (JEITA), also designated 2-5K1A by Toshiba; surface-mount, 3-pin, gull-wing leadform; weight ≈ 0.05 g.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current source terminal	Connected to higher potential rail; carries full load current in high-side switch configurations.
Base (B)	Control input	Receives negative current to forward-bias BE junction; requires ≥−0.01 A for guaranteed saturation at I_C = −0.3 A.
Collector (C)	Current sink terminal	Connected to load/switching node; withstands −50 V reverse bias during off-state in buck or flyback outputs.

Key Features

Feature	Design Value
High DC current gain	h_FE = 200–500 at I_C = −0.1 A ensures robust base drive margin and reduced base current consumption.
Low saturation voltage	V_CE(sat) ≤ −0.20 V minimizes power loss and self-heating in high-current switching paths.
Fast fall time	t_f = 70 ns (typ.) supports clean turn-off in high-frequency PWM applications up to 2 MHz.
Controlled Cob	8 pF output capacitance reduces unintended turn-on risk in high-dv/dt environments.

Applications

DC-DC Converter Output Stage	High-Side Load Switch
Use Scenario: Used as the PNP switch in non-synchronous buck converter output stage, sinking inductor current during low-side freewheeling. IC Role / Device Role / Timing Role: Acts as controlled current sink with fast turn-off to minimize dead-time losses and prevent shoot-through. Use Value: V_CE(sat) ≤ −0.20 V directly reduces conduction loss by >30% vs. comparable transistors with V_CE(sat) > −0.3 V at same I_C.	Use Scenario: Implements 12 V rail enable/disable in industrial PLC I/O modules using open-collector logic interface. IC Role / Device Role / Timing Role: Functions as level-shifted high-side switch driven by microcontroller GPIO through base resistor network. Use Value: h_FE ≥ 200 allows use of high-value base resistors (>10 kΩ), reducing MCU I/O loading and PCB space.
LED Driver Current Sink	Relay Drive Interface
Use Scenario: Sinks constant current for high-brightness LED strings in automotive interior lighting with PWM dimming. IC Role / Device Role / Timing Role: Provides linear or switched current regulation with minimal thermal drift due to stable h_FE over temperature. Use Value: t_f = 70 ns ensures clean PWM edges at 1–5 kHz, eliminating visible flicker and audible coil whine.	Use Scenario: Drives 24 V DC relay coils in HVAC control panels where microcontroller outputs lack sufficient sink capability. IC Role / Device Role / Timing Role: Serves as interface buffer between low-voltage logic and inductive load, with built-in flyback protection design considerations. Use Value: V_CEO = −50 V provides 100% margin over 24 V system rails, preventing avalanche failure during relay coil flyback events.

DC-DC Converter Output Stage

High-Side Load Switch

Use Scenario: Used as the PNP switch in non-synchronous buck converter output stage, sinking inductor current during low-side freewheeling.

IC Role / Device Role / Timing Role: Acts as controlled current sink with fast turn-off to minimize dead-time losses and prevent shoot-through.

Use Value: V_CE(sat) ≤ −0.20 V directly reduces conduction loss by >30% vs. comparable transistors with V_CE(sat) > −0.3 V at same I_C.

Use Scenario: Implements 12 V rail enable/disable in industrial PLC I/O modules using open-collector logic interface.

IC Role / Device Role / Timing Role: Functions as level-shifted high-side switch driven by microcontroller GPIO through base resistor network.

Use Value: h_FE ≥ 200 allows use of high-value base resistors (>10 kΩ), reducing MCU I/O loading and PCB space.

LED Driver Current Sink

Relay Drive Interface

Use Scenario: Sinks constant current for high-brightness LED strings in automotive interior lighting with PWM dimming.

IC Role / Device Role / Timing Role: Provides linear or switched current regulation with minimal thermal drift due to stable h_FE over temperature.

Use Value: t_f = 70 ns ensures clean PWM edges at 1–5 kHz, eliminating visible flicker and audible coil whine.

Use Scenario: Drives 24 V DC relay coils in HVAC control panels where microcontroller outputs lack sufficient sink capability.

IC Role / Device Role / Timing Role: Serves as interface buffer between low-voltage logic and inductive load, with built-in flyback protection design considerations.

Use Value: V_CEO = −50 V provides 100% margin over 24 V system rails, preventing avalanche failure during relay coil flyback events.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SA1774(TE12L,F)	V_CEO = −30 V, h_FE = 120–270, t_f = 100 ns (typ.)	Limited to ≤24 V systems; lower gain requires higher base drive current.	Preferred only when lower voltage rating and cost sensitivity outweigh speed and gain requirements.
MMBT2907ALT1G	V_CEO = −60 V, h_FE = 100–300, V_CE(sat) = −0.25 V (max), SOT-23 package	Smaller footprint but lower power dissipation (0.35 W); unsuitable for >300 mA continuous loads.	Select when board space is critical and thermal budget permits derated operation.

Compared with 2SA2070(TE12L,F), the 2SA1774 offers lower cost but sacrifices 40% faster switching and 1.7× higher minimum h_FE; MMBT2907ALT1G provides higher voltage margin and RoHS compliance but cannot replicate the 2.0 W FR4-mounted dissipation or 70 ns fall time in compact layouts.

Availability

2SA2070(TE12L,F) is available at Aetrix Electronics and suitable for DC-DC converter output stages, high-side load switches, and relay driver interfaces requiring stable component supply with consistent parametric performance across production batches.

Supply support for 2SA2070(TE12L,F) 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

Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs with emphasis on reliability, thermal performance, and industrial-grade qualification.

The 2SA2070(TE12L,F) belongs to Toshiba's general-purpose bipolar transistor product line, engineered specifically for high-efficiency, medium-power switching in power conversion and interface circuits where low V_CE(sat) and predictable h_FE are critical.

FAQ

What is the maximum continuous collector current for 2SA2070(TE12L,F) at 25°C ambient?

The 2SA2070(TE12L,F) supports I_C = −1.0 A DC when mounted on an FR4 board (1.6 mm thick, 645 mm² Cu area). This rating assumes no additional heatsinking and follows Toshiba's specified test condition in Note 1 of the Absolute Maximum Ratings table. Exceeding this current without thermal derating risks junction temperature exceeding 150°C.

Does 2SA2070(TE12L,F) meet RoHS requirements?

Yes - 2SA2070(TE12L,F) is RoHS compliant. Per Toshiba's marking convention, units with a line beside the Lot No. are labeled [[G]]/RoHS COMPATIBLE. The device contains no lead above EU RoHS Directive 2011/65/EU thresholds and is suitable for environmentally regulated markets.

How is the safe operating area (SOA) of 2SA2070(TE12L,F) defined for pulsed operation?

The SOA curve for 2SA2070(TE12L,F) is specified for single nonrepetitive pulses on FR4 (645 mm² Cu), with distinct limits for 10 µs to 10 s durations. At 100 µs, I_C max ≈ −10 A at V_CE = −10 V; at 10 ms, it drops to ≈ −2 A. Continuous DC operation is limited to −1.0 A at V_CE ≤ −2 V per the derated PC curve.

Can 2SA2070(TE12L,F) be used in linear amplifier applications?

No - 2SA2070(TE12L,F) is characterized and qualified exclusively for switching operation. Its h_FE variation across I_C, nonlinear V_BE(sat), and lack of small-signal parameters (e.g., f_T, noise figure) make it unsuitable for analog amplification. Toshiba specifies it only for high-speed switching and DC-DC converter applications.

What is the meaning of "TE12L,F" in the full part number 2SA2070(TE12L,F)?

"TE12L,F" denotes Toshiba's tape-and-reel packaging variant: TE = embossed carrier tape, 12 = 12 mm tape width, L = standard reel size (3,000 pcs/reel), and F = RoHS-compliant finish. This suffix confirms factory-packaged, automated-placement-ready form with traceable lot marking per JEITA standards.

2SA2070(TE12L,F) Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 1 A

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

Vce Saturation (Max) @ Ib, Ic:: 200mV @ 10mA, 300mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 100mA, 2V

Power - Max:: 1 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PW-MINI

2SA2070(TE12L,F) FAQ

1.How can I place an order for 2SA2070(TE12L,F) through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SA2070(TE12L,F) 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 2SA2070(TE12L,F) reliable?

The price and inventory of 2SA2070(TE12L,F) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SA2070(TE12L,F) is usually 5 days.

3.What payment methods are accepted for 2SA2070(TE12L,F)?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SA2070(TE12L,F) transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SA2070(TE12L,F)?

2SA2070(TE12L,F) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SA2070(TE12L,F) 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 2SA2070(TE12L,F)?

For technical support, including 2SA2070(TE12L,F) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SA2070(TE12L,F) requirements.

6.How does Aetrix verify that 2SA2070(TE12L,F) is sourced from the original manufacturer or authorized distributors?

All 2SA2070(TE12L,F) 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 2SA2070(TE12L,F) meets industry standards.

7.What is the process for return or replacement of 2SA2070(TE12L,F)?

All 2SA2070(TE12L,F) units undergo pre-shipment inspection (PSI). If there is an issue with 2SA2070(TE12L,F), 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 2SA2070(TE12L,F) part is unused and in its original packaging.

Return procedure for 2SA2070(TE12L,F):

1.Submit a request within 90 days.

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

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