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 BD13810STU

Name: BD13810STU
Brand: onsemi
SKU: BD13810STU
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BD13810STU

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BD13810STU.pdf

Description:: TRANS PNP 60V 1.5A TO-126-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,600

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

Product details

Overview

BD13810STU from Fairchild Semiconductor is a PNP epitaxial silicon transistor in TO-126 package, rated for -60 V V_CEO, -1.5 A continuous collector current, and 12.5 W case power dissipation at 25°C. It delivers h_FE of 63–160 at I_C = -150 mA and is optimized for medium-power linear amplification and switching in audio output stages and power supply regulators.

For engineers reviewing the BD13810STU datasheet, pinout, applications, or equivalent options, key selection criteria include its -60 V V_CEO, -1.5 A I_C, TO-126 thermal performance, h_FE classification (10), and complementary pairing with BD137.

Technical Context

This PNP bipolar junction transistor operates in active, saturation, and cutoff regions with specified V_CE(sat) ≤ -0.5 V at I_C = -500 mA / I_B = -50 mA and V_BE(on) ≈ -1.0 V at I_C = -0.5 A. Its safe operating area (SOA) supports pulsed I_C up to -3.0 A with 2% duty cycle and 350 µs pulse width.

The device features low leakage: I_CBO ≤ -0.1 µA at V_CB = -30 V and I_EBO ≤ -10 µA at V_EB = -5 V. Junction temperature is rated to 150°C, with storage range from -55°C to +150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-60 V - Maximum sustainable collector-emitter voltage before breakdown in common-emitter configuration
I_C (DC)	-1.5 A - Continuous collector current limit defining steady-state power handling capability
P_C (T_C=25°C)	12.5 W - Maximum power dissipation at case temperature of 25°C, requiring heatsinking above ambient
h_FE (I_C=-150 mA)	63–160 - DC current gain range used for biasing stability and small-signal amplification design
V_CE(sat)	≤ -0.5 V - Saturation voltage determining conduction loss and thermal rise in switching applications
T_J	150°C - Maximum allowable junction temperature, constraining thermal design margin

Pinout & Package

BD13810STU uses the TO-126 package: molded plastic case with metal tab for heatsinking, 3-pin through-hole mounting, and standardized lead spacing per JEDEC TO-126 outline.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal in PNP operation	Connected to higher potential rail; sets reference for base drive and current flow direction
2 (Collector)	Current source terminal in PNP operation	Typically tied to load or supply return; carries full load current and dissipates heat
3 (Base)	Control input for minority-carrier injection	Receives negative-going drive signal; requires current-limiting resistor to set operating point

Key Features

Feature	Design Value
Complementary pairing	Matched as PNP counterpart to BD137 NPN for push-pull amplifier stages
Medium-power SOA	Supports pulsed I_C up to -3.0 A with defined 350 µs/2% test conditions
High h_FE classification	h_FE3 = 63–160 ensures stable biasing across production lots at I_C = -150 mA
Low V_CE(sat)	≤ -0.5 V reduces conduction losses and improves efficiency in linear regulator and switch-mode applications

Applications

Audio Power Amplifiers	Linear Voltage Regulators
Use Scenario: Output stage in Class-B or Class-AB audio amplifiers driving 4–8 Ω speakers. IC Role / Device Role / Timing Role: PNP power transistor delivering negative half-cycle current in complementary pair with BD137. Use Value: -60 V V_CEO and 12.5 W P_C support RMS output power up to ~10 W into 8 Ω with adequate heatsinking.	Use Scenario: Pass transistor in adjustable positive-voltage linear regulators (e.g., with LM317 control IC). IC Role / Device Role / Timing Role: Series pass element sinking current from unregulated input to regulated output rail. Use Value: Low V_CE(sat) minimizes dropout voltage and thermal stress under full-load conditions.
DC Motor Drivers	Power Supply Protection Circuits
Use Scenario: High-side switch controlling brushed DC motors in industrial actuators or fans. IC Role / Device Role / Timing Role: PNP switch enabling/disabling motor current path via base drive logic. Use Value: -1.5 A I_C rating supports motors drawing up to 1.2 A continuous, with margin for startup surges.	Use Scenario: Current-limiting or foldback element in overcurrent-protected DC supplies. IC Role / Device Role / Timing Role: Sensing and diverting excess current away from sensitive downstream circuitry. Use Value: Tight h_FE binning (63–160) enables predictable trip-point calibration across production units.

Audio Power Amplifiers

Linear Voltage Regulators

Use Scenario: Output stage in Class-B or Class-AB audio amplifiers driving 4–8 Ω speakers.

IC Role / Device Role / Timing Role: PNP power transistor delivering negative half-cycle current in complementary pair with BD137.

Use Value: -60 V V_CEO and 12.5 W P_C support RMS output power up to ~10 W into 8 Ω with adequate heatsinking.

Use Scenario: Pass transistor in adjustable positive-voltage linear regulators (e.g., with LM317 control IC).

IC Role / Device Role / Timing Role: Series pass element sinking current from unregulated input to regulated output rail.

Use Value: Low V_CE(sat) minimizes dropout voltage and thermal stress under full-load conditions.

DC Motor Drivers

Power Supply Protection Circuits

Use Scenario: High-side switch controlling brushed DC motors in industrial actuators or fans.

IC Role / Device Role / Timing Role: PNP switch enabling/disabling motor current path via base drive logic.

Use Value: -1.5 A I_C rating supports motors drawing up to 1.2 A continuous, with margin for startup surges.

Use Scenario: Current-limiting or foldback element in overcurrent-protected DC supplies.

IC Role / Device Role / Timing Role: Sensing and diverting excess current away from sensitive downstream circuitry.

Use Value: Tight h_FE binning (63–160) enables predictable trip-point calibration across production units.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BD138G	Same die, same TO-126 package, identical absolute max ratings and electrical specs; "G" suffix denotes Pb-free plating	No functional difference; fully interchangeable in legacy and RoHS-compliant designs	Select BD138G when RoHS compliance is required without layout or thermal redesign
MJD13005	TO-252 (DPAK) surface-mount package; V_CEO = -60 V, I_C = -1.5 A, but h_FE min = 20 (vs. 63 for BD13810STU)	Requires PCB rework for SMT assembly; lower h_FE demands revised base drive design	Choose MJD13005 only if board space constraints mandate SMT and base drive can accommodate wider h_FE variance

Compared with BD138G, BD13810STU offers identical performance in through-hole form; versus MJD13005, it provides higher guaranteed h_FE and eliminates SMT retooling, making it preferable for cost-sensitive through-hole power stages where gain consistency matters.

Availability

BD13810STU is available at Aetrix Electronics and suitable for audio amplifiers, linear voltage regulators, and DC motor drivers requiring stable component supply and long-term industrial availability.

Supply support for BD13810STU 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

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete devices before its acquisition by ON Semiconductor in 2016.

The BD13810STU belongs to Fairchild's legacy medium-power linear and switching transistor family, designed specifically for robust, cost-effective replacement in audio, power supply, and industrial control circuits.

FAQ

What is the pin configuration of BD13810STU?

BD13810STU uses TO-126 package with pin 1 = Emitter, pin 2 = Collector, pin 3 = Base. The metal tab is electrically connected to the collector and must be isolated from other conductive surfaces unless intentional grounding is part of the circuit design. This configuration is consistent across all BD136/138/140 series variants.

Is BD13810STU RoHS compliant?

BD13810STU is not RoHS compliant in its original Fairchild manufacturing specification; it contains lead in solder and terminations. For RoHS-compliant alternatives, BD138G is functionally identical and certified lead-free. Always verify compliance status using the specific date code and lot traceability provided with your BD13810STU shipment.

What is the hFE classification for BD13810STU?

BD13810STU is classified as h_FE3 = 63–160 at V_CE = -2 V and I_C = -150 mA. This binning ensures tighter gain distribution than standard BD138 (40–100), improving bias stability in production amplifiers and regulators where predictable DC operating points are critical.

Can BD13810STU replace BD138 in existing designs?

Yes - BD13810STU is a direct replacement for BD138 in all electrical, thermal, and mechanical respects. The "10" suffix indicates h_FE binning (63–160), while core parameters (V_CEO, I_C, P_C, package, pinout) match BD138 exactly. No PCB or schematic changes are needed when upgrading to BD13810STU for improved gain consistency.

What is the maximum safe operating temperature for BD13810STU?

The maximum junction temperature (T_J) for BD13810STU is 150°C, and storage temperature ranges from -55°C to +150°C. To maintain reliability, ensure case temperature (T_C) stays below 100°C under full load, using appropriate heatsinking based on the 12.5 W P_C rating at T_C = 25°C and derating curve in the datasheet.

BD13810STU Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: PNP

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

Voltage - Collector Emitter Breakdown (Max):: 60 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

BD13810STU FAQ

1.How can I place an order for BD13810STU through Aetrix?

Please submit a Request for Quotation (RFQ) for BD13810STU 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 BD13810STU reliable?

The price and inventory of BD13810STU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BD13810STU is usually 5 days.

3.What payment methods are accepted for BD13810STU?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BD13810STU transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BD13810STU?

BD13810STU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BD13810STU 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 BD13810STU?

For technical support, including BD13810STU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BD13810STU requirements.

6.How does Aetrix verify that BD13810STU is sourced from the original manufacturer or authorized distributors?

All BD13810STU 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 BD13810STU meets industry standards.

7.What is the process for return or replacement of BD13810STU?

All BD13810STU units undergo pre-shipment inspection (PSI). If there is an issue with BD13810STU, 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 BD13810STU part is unused and in its original packaging.

Return procedure for BD13810STU:

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…