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

STMicroelectronics BD136-16

Name: BD136-16
Brand: STMicroelectronics
SKU: BD136-16
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BD136-16

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

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

Datasheet:: BD136-16.pdf

Description:: TRANS PNP 45V 1.5A SOT-32

Quantity:: RFQ Add To RFQ list

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Inventory:4,988

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Product details

Overview

BD136-16 from STMicroelectronics is a complementary PNP bipolar junction transistor (BJT) in SOT-32 package, rated for −45 V V_CEO, −1.5 A I_C, and 12.5 W P_TOT at T_C ≤ 25 °C, designed for audio amplifier output stages and quasi-complementary driver circuits.

For engineers reviewing the BD136-16 datasheet, BD136-16 pinout, BD136-16 application, or BD136-16 equivalent, key selection criteria include guaranteed h_FE group (100–160 at I_C = −150 mA), low V_CE(sat) (−0.5 V @ I_C = −0.5 A, I_B = −0.05 A), thermal resistance (R_thj-case = 10 °C/W), and ECOPACK® lead-free compliance.

Technical Context

This PNP BJT operates in linear and switching modes with fixed gain binning (BD136-16 denotes h_FE = 100–160), supports safe operating area up to 3 A peak collector current, and features epitaxial planar construction for stable DC performance across temperature.

It is electrically matched to NPN BD135-16/BD139-16 for complementary pair use, with symmetrical absolute maximum ratings (e.g., ±45 V V_CEO, ±1.5 A I_C) and identical thermal metrics (R_thj-amb = 100 °C/W, T_j(max) = 150 °C).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V - Maximum sustainable collector-emitter voltage with base open; defines safe linear operation limit in amplifier output stage
I_C	−1.5 A - Continuous DC collector current rating; sets maximum quiescent load capability in Class AB audio drivers
h_FE	100–160 @ I_C = −150 mA - Guaranteed DC current gain bin; enables predictable biasing and gain stability in feedback amplifiers
V_CE(sat)	−0.5 V @ I_C = −0.5 A, I_B = −0.05 A - Low saturation voltage reduces power loss and heat generation in switching or saturated-mode applications
R_thj-case	10 °C/W - Junction-to-case thermal resistance; allows direct heatsink mounting for high-power dissipation up to 12.5 W
P_TOT	12.5 W @ T_C ≤ 25 °C - Total power dissipation limit under case-cooled conditions; defines thermal design margin for PCB layout

Pinout & Package

BD136-16 is housed in the SOT-32 (TO-126) plastic package - a through-hole, single-ended, vertical-mount power transistor outline with integral metal tab for heatsinking.

Pin/Terminal	Circuit Role	Design Meaning
E (Emitter)	Current sink terminal	Connected to ground or negative rail in common-emitter amplifier configurations; carries full load current
B (Base)	Control input	Receives forward-biased drive current to regulate collector current; requires series resistor for stable biasing
C (Collector)	Current source terminal	Connected to load and positive supply; electrically tied to metal tab for thermal conduction and electrical grounding when mounted

Key Features

Feature	Design Value
Guaranteed h_FE group	100–160 at I_C = −150 mA ensures consistent gain matching with BD135-16/BD139-16 in push-pull stages
Low V_CE(sat)	−0.5 V at rated I_C/I_B minimizes conduction loss and improves efficiency in Class AB output stages
ECOPACK® compliance	Lead-free second-level interconnect meets JEDEC JESD97; supports RoHS-compliant manufacturing and reflow
High SOA	Rated for 3 A pulsed collector current (300 µs, 1.5% duty) enabling robust transient handling in audio clipping scenarios

Applications

Audio Power Amplifier Output Stage

Quasi-Complementary Driver

Use Scenario: Final output stage of 5–10 W stereo audio amplifier driving 4–8 Ω speakers.

IC Role / Device Role / Timing Role: PNP complement to NPN BD135-16/BD139-16 in Class AB push-pull configuration; handles negative half-cycle current delivery.

Use Value: Matched h_FE bin and symmetrical V_CEO/I_C ratings reduce crossover distortion and improve thermal tracking between complementary pairs.

Use Scenario: Driver stage preceding power MOSFETs or IGBTs in motor control inverters.

IC Role / Device Role / Timing Role: Linear current amplifier providing controlled base/gate drive with fast turn-off via active pull-down.

Use Value: Low V_CE(sat) and high I_C capability enable efficient, low-loss drive signal conditioning without external emitter followers.

DC Motor Speed Controller

Linear Voltage Regulator Pass Element

Use Scenario: H-bridge low-side switch or PWM-controlled unidirectional motor driver.

IC Role / Device Role / Timing Role: Saturated-switch PNP transistor controlling motor current path to ground in discrete bridge topologies.

Use Value: 3 A peak I_CM and 12.5 W P_TOT support intermittent stall-current surges without thermal runaway.

Use Scenario: Series pass element in adjustable linear regulator delivering up to 1.2 A load current.

IC Role / Device Role / Timing Role: Voltage-controlled current source regulating output by dissipating excess input-output differential voltage.

Use Value: R_thj-case = 10 °C/W enables direct heatsink mounting, supporting stable operation at >10 W dissipation with minimal derating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BD140-16	Higher \|V_CEO\| = −80 V; same h_FE bin (100–160), identical package and pinout	Supports higher supply rails (e.g., ±60 V systems); otherwise drop-in compatible in BD136-16 designs	Select BD140-16 when operating above 45 V collector-emitter differential or requiring extended SOA margin
MJE2955	Higher P_TOT = 15 W; h_FE min = 20 (no binning); TO-220 package vs. SOT-32	Requires PCB footprint change and different heatsinking; suited for higher-power, non-matched applications	Choose MJE2955 only when BD136-16's 12.5 W limit is exceeded and gain matching is not required

Compared with BD140-16 and MJE2955, BD136-16 offers optimal balance of gain matching, thermal performance, and cost for ≤45 V, ≤1.5 A audio and driver applications - where pinout compatibility and h_FE consistency outweigh raw voltage or power headroom.

Availability

BD136-16 is available at Aetrix Electronics and suitable for audio amplifier design, motor control circuitry, and linear regulator implementation requiring stable component supply and long-term obsolescence management.

Supply support for BD136-16 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, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs and discrete components for industrial, automotive, and consumer markets.

BD136-16 belongs to ST's legacy power bipolar transistor family, engineered specifically for cost-sensitive, medium-power linear and switching applications in audio, power supply, and motor control systems.

FAQ

What is the difference between BD136 and BD136-16?

BD136-16 is a binned version of BD136 with guaranteed DC current gain (h_FE) of 100–160 at I_C = −150 mA, whereas standard BD136 has h_FE = 25–250. The "-16" suffix denotes this tighter gain grouping, critical for matched complementary amplifier designs.

Can BD136-16 be used in place of BD136 without circuit changes?

Yes - BD136-16 shares identical absolute maximum ratings, pinout, package, and electrical characteristics outside h_FE binning. No schematic or layout modifications are needed; it is a direct replacement offering improved gain predictability and pairing consistency.

Is BD136-16 RoHS compliant?

Yes - BD136-16 is manufactured in ST's ECOPACK® package with lead-free second-level interconnect, fully compliant with RoHS Directive 2011/65/EU and JEDEC Standard JESD97, as confirmed in the official datasheet revision history.

What is the maximum continuous power dissipation for BD136-16 on a PCB without heatsink?

At ambient temperature ≤25 °C and no heatsink, BD136-16 is rated for 1.25 W P_TOT due to R_thj-amb = 100 °C/W. Exceeding this requires either forced air cooling, copper pour, or mechanical heatsinking to maintain T_j ≤ 150 °C.

BD136-16 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

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

Packaging:: Tube

Product Status:: Active

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:: 40 @ 150mA, 2V

Power - Max:: 1.25 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: SOT-32

BD136-16 FAQ

1.How can I place an order for BD136-16 through Aetrix?

Please submit a Request for Quotation (RFQ) for BD136-16 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 BD136-16 reliable?

The price and inventory of BD136-16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BD136-16 is usually 5 days.

3.What payment methods are accepted for BD136-16?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BD136-16 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BD136-16?

BD136-16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BD136-16 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 BD136-16?

For technical support, including BD136-16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BD136-16 requirements.

6.How does Aetrix verify that BD136-16 is sourced from the original manufacturer or authorized distributors?

All BD136-16 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 BD136-16 meets industry standards.

7.What is the process for return or replacement of BD136-16?

All BD136-16 units undergo pre-shipment inspection (PSI). If there is an issue with BD136-16, 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 BD136-16 part is unused and in its original packaging.

Return procedure for BD136-16:

1.Submit a request within 90 days.

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

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