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

STMicroelectronics 2STA2510

Name: 2STA2510
Brand: STMicroelectronics
SKU: 2STA2510
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2STA2510

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-3P-3, SC-65-3

Datasheet:: 2STA2510.pdf

Description:: TRANS PNP 100V 25A TO-3P

Quantity:: RFQ Add To RFQ list

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Inventory:7,368

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Product details

Overview

2STA2510 from STMicroelectronics is a high-power PNP epitaxial planar bipolar transistor using BiT-LA technology for linear audio amplification, featuring V_CEO = −100 V, I_C = −25 A, P_TOT = 125 W at T_C = 25 °C, f_T = 20 MHz, and R_thj-case = 1 °C/W - deployed in output stages of high-fidelity audio power amplifiers.

For engineers reviewing the 2STA2510 datasheet, 2STA2510 pinout, 2STA2510 application, or 2STA2510 equivalent, key selection criteria include safe operating area (SOA) compliance at 125 °C, DC current gain linearity (h_FE = 40–80 at I_C = −12 A), V_CE(sat) ≤ −1.5 V, thermal derating behavior, and complementary pairing with 2STC2510.

Technical Context

This PNP bipolar transistor employs epitaxial planar construction with optimized base doping and junction geometry to sustain high-voltage blocking (−100 V V_CEO, V_CBO) while delivering linear gain across wide collector current ranges (−50 mA to −12 A). Its BiT-LA process ensures low distortion in Class-AB audio output stages.

Thermal design is anchored by a low junction-to-case thermal resistance (1 °C/W), enabling direct mounting to heatsinks for continuous operation up to T_J = 150 °C. The device is fully characterized at 125 °C case temperature, supporting industrial-grade thermal margin validation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−100 V: Sustains full rail-to-rail swing in ±50 V supply audio amplifiers without breakdown.
I_C	−25 A continuous: Supports >100 W RMS output into 4 Ω loads with adequate heatsinking.
P_TOT	125 W at T_C = 25 °C: Defines maximum dissipation before thermal derating begins.
f_T	20 MHz: Enables stable feedback loop compensation up to mid-audio frequencies with margin.
h_FE	40–80 at I_C = −12 A, V_CE = −4 V: Ensures predictable bias stability in emitter-follower driver stages.
R_thj-case	1 °C/W: Allows precise junction temperature estimation from measured case temperature.
V_CE(sat)	≤ −1.5 V at I_C = −12 A, I_B = −1.2 A: Limits conduction loss and thermal stress in saturated switching regions.

Pinout & Package

Supplied in TO-3P (also known as TO-218) package: metal tab (collector), center lead (base), right lead (emitter) when viewed with leads down and tab facing away.

Pin/Terminal	Circuit Role	Design Meaning
Tab (Case)	Collector (C)	Electrically connected to collector; must be electrically isolated from heatsink unless circuit design requires common-collector configuration.
Center Lead	Base (B)	Low-impedance control terminal; requires current-limited drive to maintain h_FE linearity and avoid second breakdown.
Right Lead	Emitter (E)	Reference node for output stage; carries full load current and defines emitter degeneration resistor placement.

Key Features

Feature	Design Value
BiT-LA process technology	Optimized for gain linearity and low THD in analog power stages, not digital switching.
Full 125 °C characterization	Guarantees parameter validity under sustained industrial ambient conditions without extrapolation.
Complementary pairing	Matched thermal and electrical specs with 2STC2510 for push-pull amplifier symmetry.
ECOPACK® lead-free packaging	Meets JEDEC JESD97 marking requirements and RoHS-compliant soldering profiles.
Robust SOA curve	Validated safe operating area extends to 10 ms pulse width at rated voltage and current.

Applications

High-Fidelity Audio Amplifier

Professional PA Output Stage

Use Scenario: Discrete Class-AB output stage in 100 W stereo amplifier driving 4–8 Ω loudspeakers.

IC Role / Device Role / Timing Role: Main PNP output transistor handling negative half-cycle current delivery and thermal cycling.

Use Value: Low V_CE(sat) and linear h_FE reduce crossover distortion and improve damping factor vs. MOSFET alternatives.

Use Scenario: High-current output pair in 300 W powered mixer channel with active thermal foldback.

IC Role / Device Role / Timing Role: Complementary emitter-follower configured with 2STC2510 to deliver symmetrical peak current ≥±40 A.

Use Value: 1 °C/W R_thj-case enables real-time thermal monitoring via case sensor without derating penalties.

Industrial Motor Drive Pre-driver

DC Power Supply Pass Element

Use Scenario: Linear pre-driver for IGBT gate in 1 kW servo amplifier requiring <1 µs propagation delay.

IC Role / Device Role / Timing Role: High-gain, high-slew-rate PNP buffer between PWM controller and high-side gate driver.

Use Value: 20 MHz f_T supports clean edge fidelity up to 100 kHz switching with minimal phase lag.

Use Scenario: Series pass transistor in adjustable 0–60 V, 10 A lab bench power supply.

IC Role / Device Role / Timing Role: Primary dissipative element regulating output voltage under constant-current and CV/CC transitions.

Use Value: −100 V V_CEO headroom prevents avalanche failure during transient overvoltage events on unregulated input rails.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-power PNP linear amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJE15031	V_CEO = −150 V, I_C = −8 A, f_T = 4 MHz, R_thj-case = 2.5 °C/W	Higher voltage rating but lower current and bandwidth; less suitable for >50 W audio output stages.	Prefer where enhanced voltage margin outweighs power density needs.
BDW53C	V_CEO = −100 V, I_C = −15 A, P_TOT = 90 W, h_FE = 25–120 at I_C = −5 A	Narrower SOA, higher V_CE(sat) (−2.0 V), no 125 °C characterization data published.	Acceptable for cost-sensitive 30–50 W designs where thermal margin is relaxed.

Compared with MJE15031 and BDW53C, the 2STA2510 delivers superior power density (125 W in TO-3P), verified linearity at elevated temperature, and tighter V_CE(sat) control - making it optimal for thermally constrained, high-fidelity linear amplifier designs demanding repeatable performance.

Availability

2STA2510 is available at Aetrix Electronics and suitable for high-fidelity audio amplifiers, professional PA systems, and industrial linear power supplies requiring stable component supply and long-term BOM continuity.

Supply support for 2STA2510 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, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The 2STA2510 belongs to ST's high-power bipolar transistor family engineered specifically for linear audio and industrial analog power applications requiring robust SOA, thermal stability, and gain linearity - not general-purpose switching.

FAQ

Is the 2STA2510 still in active production?

No - STMicroelectronics has marked the 2STA2510 as Obsolete (as confirmed in the November 2008 Rev 3 datasheet footer). Aetrix Electronics maintains legacy inventory with full traceability and offers engineering support for redesign evaluation using validated alternatives such as MJE15031 or BDW53C where applicable.

What is the recommended heatsink interface for the TO-3P package?

Use electrically isolating thermal interface material (e.g., mica washer + silicone grease or ceramic pad) between the metal tab (collector) and heatsink. Mounting torque must not exceed 0.5 N·m to avoid die fracture. Thermal resistance from junction to ambient depends on heatsink size, airflow, and interface quality - R_thj-amb ≈ R_thj-case + R_thcase-sink + R_thsink-amb.

Can the 2STA2510 be used in parallel configurations?

Yes - but only with matched devices (h_FE and V_CE(sat) within ±5 %), individual emitter resistors (0.1–0.22 Ω), and symmetrical PCB layout to ensure current sharing. Parallel operation increases total I_C capability but does not improve R_thj-case; thermal coupling between devices must be modeled to avoid localized hot spots.

Does the 2STA2510 require base current limiting in linear operation?

Yes - base drive must be current-limited to prevent secondary breakdown. For I_C = −12 A, typical I_B = −1.2 A implies minimum base resistor of ~42 Ω when driven from −5 V logic. Fast turn-off requires active base pull-down (e.g., diode + resistor) to avoid storage time delays exceeding 1 µs.

2STA2510 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-3P-3, SC-65-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 25 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 1.5V @ 1.2A, 12A

Current - Collector Cutoff (Max):: 10µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 40 @ 12A, 4V

Power - Max:: 125 W

Frequency - Transition:: 20MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-3P

2STA2510 FAQ

1.How can I place an order for 2STA2510 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2STA2510 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 2STA2510 reliable?

The price and inventory of 2STA2510 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2STA2510 is usually 5 days.

3.What payment methods are accepted for 2STA2510?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2STA2510 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2STA2510?

2STA2510 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2STA2510 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 2STA2510?

For technical support, including 2STA2510 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2STA2510 requirements.

6.How does Aetrix verify that 2STA2510 is sourced from the original manufacturer or authorized distributors?

All 2STA2510 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 2STA2510 meets industry standards.

7.What is the process for return or replacement of 2STA2510?

All 2STA2510 units undergo pre-shipment inspection (PSI). If there is an issue with 2STA2510, 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 2STA2510 part is unused and in its original packaging.

Return procedure for 2STA2510:

1.Submit a request within 90 days.

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

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