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

onsemi BD14010S

Name: BD14010S
Brand: onsemi
SKU: BD14010S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BD14010S

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BD14010S.pdf

Description:: TRANS PNP 80V 1.5A TO-126-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BD14010S from Fairchild Semiconductor is a PNP epitaxial silicon transistor in TO-126 package, rated for -80 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 circuits such as audio output stages and relay drivers.

For engineers reviewing the BD14010S datasheet, pinout, applications, or equivalent options, key selection criteria include verified V_CEO/V_CBO ratings, hFE classification (100–250 at I_C=−150 mA), V_CE(sat) ≤ −0.5 V, thermal derating behavior, and TO-126 mechanical compatibility with heatsink mounting.

Technical Context

This PNP bipolar junction transistor operates in active, saturation, and cutoff regions with DC current gain (hFE) specified across three test conditions: 40–100 at I_C=−5 mA, 63–160 at I_C=−0.5 A, and 100–250 at I_C=−150 mA. Its safe operating area (SOA) supports pulsed collector currents up to −3.0 A with 2% duty cycle.

The device features low V_BE(on) of −1.0 V at I_C=−0.5 A and exhibits tight leakage control: I_CBO ≤ −0.1 µA at V_CB=−30 V and I_EBO ≤ −10 µA at V_EB=−5 V, enabling stable biasing in temperature-varying environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−80 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-load operation
hFE (I_C=−150 mA)	100–250: DC current gain range determining base drive requirements for switching or amplification
V_CE(sat)	≤ −0.5 V at I_C=−500 mA, I_B=−50 mA: Saturation voltage defining on-state power loss and efficiency in switch mode
T_J	150°C: Maximum junction temperature limiting thermal design margin and reliability under load
V_BE(on)	−1.0 V at V_CE=−2 V, I_C=−0.5 A: Base-emitter forward voltage setting base resistor sizing for bias networks

Pinout & Package

BD14010S uses the TO-126 plastic package with integral metal tab for heatsinking. Pin 1 is Emitter, Pin 2 is Collector (connected to tab), Pin 3 is Base - confirmed by Fairchild Rev. A datasheet mechanical drawing and terminal assignment.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current exit path in PNP operation	Connected to most positive rail in common-emitter switch; requires low-impedance return path
2 (Collector)	Current entry path; electrically tied to metal tab	Must be isolated from chassis unless circuit ground reference permits; primary heatsink interface
3 (Base)	Control electrode for minority-carrier injection	Driven with negative current relative to emitter; base resistor must limit I_B ≤ −0.5 A peak

Key Features

Feature	Design Value
High V_CEO rating	−80 V enables use in 48 V and higher DC bus switching applications without cascading devices
Classified hFE group	hFE3 bin (100–250) ensures predictable gain matching for complementary pair design with BD139
Low V_CE(sat)	≤ −0.5 V minimizes conduction loss in saturated-switch configurations like motor H-bridge legs
TO-126 thermal design	Integral collector-tab mounting allows direct heatsink attachment with <1.5°C/W typical θ_JC
Leakage-controlled junction	I_CBO ≤ −0.1 µA supports stable bias in high-impedance amplifier stages over temperature

Applications

Audio Power Amplifier Output Stage	DC Motor Direction Control
Use Scenario: Driving 4–8 Ω speaker loads in Class-B or AB push-pull output stage with complementary NPN/PNP pairs. IC Role / Device Role / Timing Role: PNP output transistor delivering negative half-cycle current; paired with BD139 for symmetrical swing. Use Value: −80 V V_CEO and 12.5 W P_C support 10–15 W RMS output into 4 Ω with adequate SOA margin.	Use Scenario: Controlling bidirectional 12–24 V brushed DC motors in industrial actuators or robotics. IC Role / Device Role / Timing Role: High-side PNP switch in H-bridge upper leg; commutated with logic-level base drive. Use Value: −1.5 A I_C and −0.5 V V_CE(sat) enable efficient 1 A continuous motor current with <0.5 W conduction loss.
Relay Driver Circuit	Linear Voltage Regulator Pass Element
Use Scenario: Switching 12–24 V coil relays with inductive kick suppression in PLC I/O modules. IC Role / Device Role / Timing Role: Saturated PNP switch sinking relay coil current to ground via emitter-follower configuration. Use Value: −3.0 A I_CP and robust SOA tolerate relay turn-off transients without snubber components.	Use Scenario: Series pass element in adjustable 3–15 V, 1 A linear regulators for analog sensor supplies. IC Role / Device Role / Timing Role: PNP pass transistor operating in active region; base driven by error amplifier. Use Value: Tight hFE spread (100–250) and −1.0 V V_BE(on) simplify feedback loop compensation and dropout optimization.

Audio Power Amplifier Output Stage

DC Motor Direction Control

Use Scenario: Driving 4–8 Ω speaker loads in Class-B or AB push-pull output stage with complementary NPN/PNP pairs.

IC Role / Device Role / Timing Role: PNP output transistor delivering negative half-cycle current; paired with BD139 for symmetrical swing.

Use Value: −80 V V_CEO and 12.5 W P_C support 10–15 W RMS output into 4 Ω with adequate SOA margin.

Use Scenario: Controlling bidirectional 12–24 V brushed DC motors in industrial actuators or robotics.

IC Role / Device Role / Timing Role: High-side PNP switch in H-bridge upper leg; commutated with logic-level base drive.

Use Value: −1.5 A I_C and −0.5 V V_CE(sat) enable efficient 1 A continuous motor current with <0.5 W conduction loss.

Relay Driver Circuit

Linear Voltage Regulator Pass Element

Use Scenario: Switching 12–24 V coil relays with inductive kick suppression in PLC I/O modules.

IC Role / Device Role / Timing Role: Saturated PNP switch sinking relay coil current to ground via emitter-follower configuration.

Use Value: −3.0 A I_CP and robust SOA tolerate relay turn-off transients without snubber components.

Use Scenario: Series pass element in adjustable 3–15 V, 1 A linear regulators for analog sensor supplies.

IC Role / Device Role / Timing Role: PNP pass transistor operating in active region; base driven by error amplifier.

Use Value: Tight hFE spread (100–250) and −1.0 V V_BE(on) simplify feedback loop compensation and dropout optimization.

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
MJD127	TO-252 (DPAK) package; −80 V V_CEO, −2 A I_C, hFE 40–250; lower R_θJA but no integral heatsink tab	Surface-mount layout; unsuitable for through-hole heatsink mounting without adapter	Select when automated assembly and PCB thermal vias replace mechanical heatsinking
BC558	TO-92 package; −30 V V_CEO, −100 mA I_C; hFE 110–800; much lower power and voltage capability	Low-power signal switching only; cannot replace BD14010S in power-stage roles	Use only for biasing, logic inversion, or pre-driver stages-not as direct functional substitute

Compared with MJD127 and BC558, BD14010S uniquely combines through-hole TO-126 mechanical robustness, −80 V/−1.5 A ratings, and verified hFE classification for discrete power amplifier and relay driver designs where heatsink integration and legacy footprint matter.

Availability

BD14010S is available at Aetrix Electronics and suitable for audio power amplifiers, DC motor controllers, relay driver circuits, and linear regulator pass elements requiring stable component supply and long-lifecycle support.

Supply support for BD14010S 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 BD14010S belongs to Fairchild's legacy medium-power PNP transistor family designed for industrial linear amplification and robust switching applications where TO-126 mechanical reliability and defined hFE bins were critical.

FAQ

What is the maximum continuous collector current rating for BD14010S?

The BD14010S has a maximum continuous collector current (I_C) rating of −1.5 A at T_C = 25°C. This value decreases with rising case temperature per the derating curve in the Fairchild datasheet, reaching zero at approximately 175°C case temperature. Operation above this limit risks thermal runaway and permanent damage to the BD14010S.

Is BD14010S pin-compatible with BD139?

No, BD14010S is not pin-compatible with BD139. BD14010S is a PNP transistor in TO-126 package with pinout Emitter–Collector–Base (1–2–3), while BD139 is an NPN transistor with identical TO-126 pinout but opposite polarity. They are complementary types-not physical replacements-and require mirrored circuit topology when used together.

What is the hFE classification group for BD14010S?

The BD14010S is classified in the hFE3 group, with a guaranteed DC current gain range of 100–250 when measured at V_CE = −2 V and I_C = −150 mA. This classification is explicitly defined in the Fairchild BD136/138/140 datasheet Rev. A and ensures consistent gain behavior for amplifier and switching design.

Can BD14010S be used in surface-mount designs?

No, BD14010S is not suitable for surface-mount designs. It uses the through-hole TO-126 package with leads intended for axial insertion and soldering. Its metal collector tab is designed for mechanical heatsink attachment-not reflow soldering-making it incompatible with standard SMT processes without custom adapter hardware.

What is the safe operating area (SOA) limit for BD14010S under pulsed conditions?

Under pulsed conditions (PW = 350 µs, duty cycle = 2%), the BD14010S supports a peak collector current (I_CP) of −3.0 A. This SOA limit is validated in the Fairchild datasheet and accounts for transient thermal effects; exceeding it-even briefly-may cause second breakdown or localized junction failure in the BD14010S.

BD14010S 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):: 80 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

BD14010S FAQ

1.How can I place an order for BD14010S through Aetrix?

Please submit a Request for Quotation (RFQ) for BD14010S 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 BD14010S reliable?

The price and inventory of BD14010S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BD14010S is usually 5 days.

3.What payment methods are accepted for BD14010S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BD14010S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BD14010S?

BD14010S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BD14010S 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 BD14010S?

For technical support, including BD14010S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BD14010S requirements.

6.How does Aetrix verify that BD14010S is sourced from the original manufacturer or authorized distributors?

All BD14010S 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 BD14010S meets industry standards.

7.What is the process for return or replacement of BD14010S?

All BD14010S units undergo pre-shipment inspection (PSI). If there is an issue with BD14010S, 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 BD14010S part is unused and in its original packaging.

Return procedure for BD14010S:

1.Submit a request within 90 days.

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

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