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

onsemi BD13610S

Name: BD13610S
Brand: onsemi
SKU: BD13610S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BD13610S

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BD13610S.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BD13610S from Fairchild Semiconductor is a PNP epitaxial silicon transistor in TO-126 package, rated for -45 V V_CEO, -1.5 A continuous collector current, and 12.5 W case power dissipation at T_C=25°C, used in medium-power linear amplification and switching applications such as audio output stages and relay drivers.

For engineers reviewing the BD13610S datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CEO/V_CBO ratings, hFE classification (hFE3 = 40–100), V_CE(sat) at -500 mA/-50 mA, thermal derating behavior, and TO-126 mechanical compatibility with heatsink mounting.

Technical Context

This device operates as a medium-power PNP bipolar junction transistor with fixed emitter-base-collector terminal assignment and DC current gain binned per hFE3 classification. It supports linear operation up to f_T ≈ 50 MHz (inferred from typical BD136 family data) and exhibits defined safe operating area (SOA) limits under pulsed and DC conditions.

Thermal performance is governed by case-to-ambient and case-to-heatsink resistance curves, with power derating beginning at T_C > 25°C. The device requires external base drive control and does not integrate protection circuitry or biasing networks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-45 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 conduction capability
P_C (T_C=25°C)	12.5 W - Maximum power dissipation at case temperature of 25°C, requiring heatsink for full rating
hFE3	40–100 - DC current gain range at V_CE = -2 V, I_C = -150 mA, used for gain-critical bias design
V_CE(sat)	-0.5 V - Saturation voltage at I_C = -500 mA, I_B = -50 mA, determining on-state power loss in switching
V_EB0	-5 V - Maximum reverse emitter-base voltage before leakage degradation or junction damage
T_J	150 °C - Absolute maximum junction temperature, setting thermal design margin for reliability

Pinout & Package

BD13610S uses the TO-126 plastic power package with standardized 3-pin layout: lead 1 = Emitter, lead 2 = Collector (connected to tab), lead 3 = Base. The metal tab is electrically connected to the collector and serves as primary thermal path.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current exit node in PNP operation	Connected to higher potential rail in common-emitter switch; sets reference for base drive polarity
2 (Collector)	Current entry node; tied to metal tab	Electrically and thermally coupled to heatsink; must be isolated from PCB ground unless circuit topology permits
3 (Base)	Control input for minority-carrier injection	Requires negative-going current relative to emitter to turn on; base resistor sizing critical for saturation

Key Features

Feature	Design Value
Medium-power PNP BJT	Enables complementary use with BD135/BD137/BD139 in push-pull amplifier and H-bridge driver designs
TO-126 package with collector-tab	Supports direct mechanical mounting to heatsinks without insulating washers when collector is at system ground potential
hFE3 binning (40–100)	Allows predictable DC bias point setting in linear amplifiers without individual gain trimming
Specified SOA and derating curve	Permits reliable operation under transient overloads and enables thermal design validation using published PC vs. TC data

Applications

Audio Power Amplifier Output Stage	DC Motor Direction Control
Use Scenario: Driving 4–8 Ω speaker loads in Class-B or AB amplifier outputs with complementary NPN/PNP pairs. IC Role / Device Role / Timing Role: PNP output transistor delivering negative half-cycle current in push-pull topology. Use Value: -45 V V_CEO and -1.5 A I_C support 10–15 W RMS audio output; low V_CE(sat) minimizes crossover distortion and heat generation.	Use Scenario: Controlling bidirectional rotation of small DC motors (e.g., robotics, actuators) via H-bridge configuration. IC Role / Device Role / Timing Role: High-side PNP switch enabling current flow from supply to motor terminal during reverse drive phase. Use Value: TO-126 collector-tab allows direct heatsinking for intermittent 1–2 A motor surge currents; hFE3 binning ensures consistent base drive requirements across production units.
Relay Driver Circuit	Linear Voltage Regulator Pass Element
Use Scenario: Switching 12–24 V electromagnetic relays with coil currents up to 1.2 A in industrial control panels. IC Role / Device Role / Timing Role: Saturated PNP switch interfacing microcontroller GPIO to relay coil, providing galvanic isolation via optocoupler or level-shifting stage. Use Value: -0.5 V V_CE(sat) at -500 mA ensures <0.25 W dissipation during hold state; TO-126 footprint simplifies board-level thermal management.	Use Scenario: Acting as series pass transistor in adjustable linear regulators delivering up to 1.2 A at ≤35 V input-output differential. IC Role / Device Role / Timing Role: Current-controlled pass element regulating output voltage via feedback-controlled base current. Use Value: 12.5 W P_C at T_C=25°C enables ≥10 W continuous dissipation with proper heatsinking; V_CEO = -45 V supports wide input range applications.

Audio Power Amplifier Output Stage

DC Motor Direction Control

Use Scenario: Driving 4–8 Ω speaker loads in Class-B or AB amplifier outputs with complementary NPN/PNP pairs.

IC Role / Device Role / Timing Role: PNP output transistor delivering negative half-cycle current in push-pull topology.

Use Value: -45 V V_CEO and -1.5 A I_C support 10–15 W RMS audio output; low V_CE(sat) minimizes crossover distortion and heat generation.

Use Scenario: Controlling bidirectional rotation of small DC motors (e.g., robotics, actuators) via H-bridge configuration.

IC Role / Device Role / Timing Role: High-side PNP switch enabling current flow from supply to motor terminal during reverse drive phase.

Use Value: TO-126 collector-tab allows direct heatsinking for intermittent 1–2 A motor surge currents; hFE3 binning ensures consistent base drive requirements across production units.

Relay Driver Circuit

Linear Voltage Regulator Pass Element

Use Scenario: Switching 12–24 V electromagnetic relays with coil currents up to 1.2 A in industrial control panels.

IC Role / Device Role / Timing Role: Saturated PNP switch interfacing microcontroller GPIO to relay coil, providing galvanic isolation via optocoupler or level-shifting stage.

Use Value: -0.5 V V_CE(sat) at -500 mA ensures <0.25 W dissipation during hold state; TO-126 footprint simplifies board-level thermal management.

Use Scenario: Acting as series pass transistor in adjustable linear regulators delivering up to 1.2 A at ≤35 V input-output differential.

IC Role / Device Role / Timing Role: Current-controlled pass element regulating output voltage via feedback-controlled base current.

Use Value: 12.5 W P_C at T_C=25°C enables ≥10 W continuous dissipation with proper heatsinking; V_CEO = -45 V supports wide input range applications.

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
BD136G	Same electrical specs and TO-126 package; RoHS-compliant variant with green molding compound	No functional difference; suitable for new designs requiring lead-free compliance	Select BD136G for RoHS-constrained production; BD13610S remains valid for legacy repair or non-RoHS environments
MJD127	Higher V_CEO (-100 V), same I_C (-1.5 A), TO-220 package, no collector-tab isolation	Enables higher-voltage switching but requires different PCB footprint and thermal interface design	Choose MJD127 only when >-60 V blocking is required and TO-220 layout is acceptable

Compared with BD13610S, BD136G offers identical performance with environmental compliance, while MJD127 trades package compatibility for extended voltage capability-neither is pin-compatible, and both require layout or thermal redesign.

Availability

BD13610S is available at Aetrix Electronics and suitable for audio amplification, relay driving, and linear regulator applications requiring stable component supply, long-lifecycle support, and traceable sourcing from original manufacturer channels.

Supply support for BD13610S 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 analog and discrete power devices, later acquired by ON Semiconductor in 2016.

The BD13610S belongs to Fairchild's legacy medium-power PNP transistor family designed for cost-sensitive, thermally constrained linear and switching applications in consumer, industrial, and automotive auxiliary systems.

FAQ

What is the pin configuration of BD13610S?

The BD13610S uses TO-126 package with pin 1 = Emitter, pin 2 = Collector (electrically connected to metal tab), and pin 3 = Base. This configuration is standardized across the BD136/138/140 family and confirmed in Fairchild's Rev. A datasheet. Pinout must be verified against physical marking: "BD136" text aligns with pin 1.

Is BD13610S RoHS compliant?

BD13610S is not RoHS compliant, as it predates the 2006 RoHS directive and uses leaded solder and packaging materials. For RoHS-compliant alternatives, consider BD136G - an updated version with identical electrical specs and green compound. BD13610S remains available for legacy repair and non-RoHS applications.

What is the maximum safe operating collector current for BD13610S?

The BD13610S has a DC collector current rating of -1.5 A and a pulsed collector current rating of -3.0 A (PW=350 µs, duty cycle=2%). Safe operation at full -1.5 A requires maintaining case temperature ≤25°C via heatsinking; continuous use above 1.0 A demands active thermal management per the published derating curve.

Can BD13610S replace BD136 in existing designs?

Yes - BD13610S is a direct variant of the BD136, sharing identical absolute maximum ratings, electrical characteristics, TO-126 package, and pinout. The "10S" suffix denotes a specific hFE3 bin (40–100) and may reflect internal lot or test screening; no circuit redesign or layout change is needed when substituting BD13610S for BD136.

What is the typical V_CE(sat) for BD13610S under standard test conditions?

The BD13610S exhibits a maximum V_CE(sat) of -0.5 V at I_C = -500 mA and I_B = -50 mA, per Fairchild's datasheet. Typical values range from -0.35 V to -0.45 V under these conditions. This saturation voltage directly determines conduction loss and thermal load in switching applications using BD13610S.

BD13610S Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP

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

BD13610S FAQ

1.How can I place an order for BD13610S through Aetrix?

Please submit a Request for Quotation (RFQ) for BD13610S 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 BD13610S reliable?

The price and inventory of BD13610S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BD13610S is usually 5 days.

3.What payment methods are accepted for BD13610S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BD13610S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BD13610S?

BD13610S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BD13610S 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 BD13610S?

For technical support, including BD13610S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BD13610S requirements.

6.How does Aetrix verify that BD13610S is sourced from the original manufacturer or authorized distributors?

All BD13610S 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 BD13610S meets industry standards.

7.What is the process for return or replacement of BD13610S?

All BD13610S units undergo pre-shipment inspection (PSI). If there is an issue with BD13610S, 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 BD13610S part is unused and in its original packaging.

Return procedure for BD13610S:

1.Submit a request within 90 days.

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

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