Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi BD13510STU

Name: BD13510STU
Brand: onsemi
SKU: BD13510STU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BD13510STU

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-225AA, TO-126-3

Datasheet:: BD13510STU.pdf

Description:: TRANS NPN 45V 1.5A TO-126-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,444

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BD13510STU from onsemi is a plastic medium-power silicon NPN transistor designed for audio amplifier and driver stages in complementary or quasi-complementary circuits, with V_CEO = 45 V, I_C = 1.5 A, P_D = 12.5 W at T_C = 25°C, h_FE ≥ 25 (at I_C = 5 mA), and TO-225 package. It operates across –55°C to +150°C junction temperature range.

For engineers reviewing the BD13510STU datasheet, pinout, applications, or equivalent options, key selection criteria include collector-emitter sustaining voltage, DC current gain at multiple bias points, saturation voltage under defined I_C/I_B, thermal resistance (R_JC = 10°C/W), and Pb-free TO-225 mechanical compatibility.

Technical Context

This NPN bipolar junction transistor is optimized for linear amplification and switching in medium-power analog stages. Its design supports stable DC current gain (h_FE = 25–250) across I_C = 5 mA to 500 mA, with V_CE(sat) ≤ 0.5 V at I_C = 0.5 A / I_B = 0.05 A and V_BE(on) ≤ 1.0 V under same conditions.

Thermal performance is defined by R_JC = 10°C/W and R_JA = 100°C/W, enabling operation up to 150°C junction temperature. The device is complementary to BD136G and shares identical TO-225 pinout (Emitter–Collector–Base–Collector), supporting matched-pair designs in push-pull output stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum allowable collector-emitter voltage before breakdown under open-base condition; sets safe operating voltage ceiling in amplifier rails.
I_C	1.5 A - Continuous collector current rating; defines maximum sustained output drive capability in Class-A/B audio stages.
P_D @ T_C = 25°C	12.5 W - Total power dissipation at case temperature 25°C; requires heatsinking above ambient derating threshold (100 mW/°C).
h_FE (I_C = 5 mA)	25–250 - DC current gain range at low bias; enables high-input-impedance preamp interface without excessive base drive.
V_CE(sat)	≤ 0.5 V @ I_C = 0.5 A, I_B = 0.05 A - Low saturation voltage ensures minimal conduction loss and heat generation in switching applications.
R_JC	10°C/W - Junction-to-case thermal resistance; determines minimum heatsink requirement for thermal management in enclosed chassis.

Pinout & Package

BD13510STU is housed in a Pb-free TO-225 package (Case 77-09, Style 1), featuring a metal tab connected to collector (pins 2 and 4), emitter at pin 1, and base at pin 3. The package supports through-hole mounting and direct heatsink attachment via the collector tab.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Emitter	Reference node for current return path; connects to ground or negative rail in common-emitter configurations.
Pins 2 & 4	Collector	Shared collector terminal with metal tab; electrically and thermally coupled to heatsink for power dissipation.
Pin 3	Base	Control input for bipolar current amplification; requires current-limited drive to avoid overbiasing.

Key Features

Feature	Design Value
High DC current gain	h_FE up to 250 at I_C = 150 mA enables low-base-drive amplifier stages with improved efficiency.
Complementary pairing	Designed as NPN counterpart to BD136G (PNP), allowing matched push-pull output stage construction.
Pb-free & RoHS compliant	Meets global environmental regulations without compromising thermal or electrical performance in legacy audio designs.
Robust thermal rating	Junction temperature range of –55°C to +150°C supports operation in industrial enclosures and automotive under-hood environments.

Applications

Audio Power Amplifier	DC Motor Driver
Use Scenario: Final output stage in 5–15 W stereo audio amplifiers using quasi-complementary topology. IC Role / Device Role / Timing Role: NPN output transistor delivering current gain and voltage swing to speaker load. Use Value: V_CEO = 45 V and I_C = 1.5 A support ±20 V rail operation into 4–8 Ω loads with low crossover distortion.	Use Scenario: H-bridge half-bridge switch controlling bidirectional 12 V DC motors in robotics and actuation systems. IC Role / Device Role / Timing Role: Medium-power switching element handling peak currents up to 1.5 A during motor stall. Use Value: V_CE(sat) ≤ 0.5 V minimizes resistive losses and self-heating during PWM-driven conduction phases.
Linear Voltage Regulator Pass Element	Industrial Sensor Signal Conditioning
Use Scenario: Series pass transistor in adjustable linear regulators supplying 1–2 A to analog subsystems. IC Role / Device Role / Timing Role: Current-amplifying pass device controlled by error amplifier feedback loop. Use Value: P_D = 12.5 W @ T_C = 25°C allows regulation from 24 V input to 5 V/1.5 A output with adequate heatsinking.	Use Scenario: Transimpedance amplifier stage converting photodiode current to voltage in precision optical sensors. IC Role / Device Role / Timing Role: Low-noise, high-gain active element in discrete op-amp front-end configurations. Use Value: h_FE ≥ 25 at I_C = 5 mA ensures stable transconductance and minimal input bias current drift over temperature.

Audio Power Amplifier

DC Motor Driver

Use Scenario: Final output stage in 5–15 W stereo audio amplifiers using quasi-complementary topology.

IC Role / Device Role / Timing Role: NPN output transistor delivering current gain and voltage swing to speaker load.

Use Value: V_CEO = 45 V and I_C = 1.5 A support ±20 V rail operation into 4–8 Ω loads with low crossover distortion.

Use Scenario: H-bridge half-bridge switch controlling bidirectional 12 V DC motors in robotics and actuation systems.

IC Role / Device Role / Timing Role: Medium-power switching element handling peak currents up to 1.5 A during motor stall.

Use Value: V_CE(sat) ≤ 0.5 V minimizes resistive losses and self-heating during PWM-driven conduction phases.

Linear Voltage Regulator Pass Element

Industrial Sensor Signal Conditioning

Use Scenario: Series pass transistor in adjustable linear regulators supplying 1–2 A to analog subsystems.

IC Role / Device Role / Timing Role: Current-amplifying pass device controlled by error amplifier feedback loop.

Use Value: P_D = 12.5 W @ T_C = 25°C allows regulation from 24 V input to 5 V/1.5 A output with adequate heatsinking.

Use Scenario: Transimpedance amplifier stage converting photodiode current to voltage in precision optical sensors.

IC Role / Device Role / Timing Role: Low-noise, high-gain active element in discrete op-amp front-end configurations.

Use Value: h_FE ≥ 25 at I_C = 5 mA ensures stable transconductance and minimal input bias current drift over temperature.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BD135G	Identical electrical specs and TO-225 package; same marking prefix and Pb-free compliance.	No functional difference; BD13510STU appears to be a variant or date-code-marked version of BD135G.	Select BD135G when standard ordering code is required; BD13510STU may reflect specific traceable lot or packaging format.
MJE13003	Higher V_CEO = 400 V, lower h_FE (min 10), P_D = 15 W; TO-220 package with different pinout (E-B-C).	Suitable for flyback switchers or high-voltage linear regulators, not direct audio amplifier replacement due to gain and saturation mismatch.	Choose only if higher breakdown voltage is mandatory and layout allows TO-220 footprint change and pin reassignment.

Compared with BD135G and MJE13003, BD13510STU offers verified audio-grade h_FE linearity and TO-225 mechanical fit for legacy board replacements, while MJE13003 trades gain and saturation for voltage headroom in switching topologies.

Availability

BD13510STU is available at Aetrix Electronics and suitable for audio amplifier output stages, DC motor drivers, linear regulator pass elements, and industrial sensor signal conditioning requiring stable component supply and long-term obsolescence mitigation.

Supply support for BD13510STU 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 focused on energy-efficient electronics, delivering power management, analog, sensing, and connectivity solutions.

BD13510STU belongs to onsemi's legacy bipolar power transistor family engineered for cost-sensitive, medium-power linear and switching applications in consumer audio, industrial controls, and power conversion.

FAQ

What is the maximum collector-emitter voltage rating for BD13510STU?

The BD13510STU has a maximum collector-emitter sustaining voltage (V_CEO) of 45 Vdc under specified test conditions (I_C = 30 mA, I_B = 0). This rating defines the absolute upper limit for safe operation in common-emitter configurations and must not be exceeded to prevent avalanche breakdown or permanent damage to the BD13510STU.

Does BD13510STU have a Pb-free and RoHS-compliant package?

Yes, BD13510STU uses a Pb-free TO-225 package and is RoHS compliant, halogen-free, and BFR-free per onsemi's manufacturing specifications. The "G" suffix in related part numbers (e.g., BD135G) confirms this compliance, and BD13510STU follows the same environmental qualification as the BD135G series.

What is the thermal resistance from junction to case for BD13510STU?

The BD13510STU has a thermal resistance from junction to case (R_JC) of 10°C/W. This value is critical for heatsink sizing: for example, maintaining T_J ≤ 125°C at P_D = 10 W requires a case-to-ambient thermal path no greater than 115°C/W (125 − 25)/10, meaning the heatsink plus interface must contribute ≤ 105°C/W beyond the BD13510STU's intrinsic R_JC.

Can BD13510STU be used as a direct replacement for BD135G in existing designs?

Yes, BD13510STU is functionally and mechanically identical to BD135G - same TO-225 package, pinout, electrical ratings (V_CEO, I_C, h_FE, V_CE(sat)), and RoHS compliance. No PCB or schematic changes are needed when substituting BD13510STU for BD135G, making it suitable for drop-in replacement in legacy audio amplifier and driver applications.

What is the DC current gain range of BD13510STU at different collector currents?

The BD13510STU exhibits h_FE ≥ 25 at I_C = 5 mA, ≥ 40 at I_C = 150 mA, and ≥ 25 at I_C = 500 mA (all at V_CE = 2 V). This wide gain bandwidth supports both small-signal preamplification and medium-current output driving, ensuring predictable bias stability across operating points in the BD13510STU's intended use cases.

BD13510STU Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-225AA, TO-126-3

Packaging:: Tube

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1.5 A

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 50mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 63 @ 150mA, 2V

Power - Max:: 1.25 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-126-3

BD13510STU FAQ

1.How can I place an order for BD13510STU through Aetrix?

Please submit a Request for Quotation (RFQ) for BD13510STU 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 BD13510STU reliable?

The price and inventory of BD13510STU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BD13510STU is usually 5 days.

3.What payment methods are accepted for BD13510STU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BD13510STU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BD13510STU?

BD13510STU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BD13510STU 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 BD13510STU?

For technical support, including BD13510STU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BD13510STU requirements.

6.How does Aetrix verify that BD13510STU is sourced from the original manufacturer or authorized distributors?

All BD13510STU 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 BD13510STU meets industry standards.

7.What is the process for return or replacement of BD13510STU?

All BD13510STU units undergo pre-shipment inspection (PSI). If there is an issue with BD13510STU, 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 BD13510STU part is unused and in its original packaging.

Return procedure for BD13510STU:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…