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

Microchip Technology 2N6287

Name: 2N6287
Brand: Microchip Technology
SKU: 2N6287
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2N6287

Manufacturer:: Microchip Technology

Category:: Single Bipolar Transistors

Package:: TO-204AA, TO-3

Datasheet:: 2N6287.pdf

Description:: TRANS PNP DARL 100V 20A TO204AA

Quantity:: RFQ Add To RFQ list

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Inventory:7,482

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Product details

Overview

2N6287 from STMicroelectronics is a PNP complementary power Darlington transistor in monolithic configuration, housed in a TO-3 metal package. It delivers 20 A continuous collector current, 100 V V_CEO, and 160 W total dissipation at T_C = 25 °C, with integrated collector-emitter antiparallel diode. It is designed for audio power amplifiers and low-frequency switching in industrial DC-AC converters.

For engineers reviewing the 2N6287 datasheet, 2N6287 pinout, 2N6287 application, or 2N6287 equivalent, key selection factors include its monolithic Darlington gain (h_FE = 750–18,000 at I_C = 10–20 A), V_CE(sat) ≤ 3 V at I_C = 20 A / I_B = 200 mA, thermal resistance (R_thj-case = 1.09 °C/W), and integrated antiparallel diode for inductive load commutation.

Technical Context

The 2N6287 operates as a high-gain, high-current PNP Darlington pair with internal base resistors (R1 ≈ 8 kΩ, R2 ≈ 60 kΩ) enabling simplified drive requirements. Its monolithic integration ensures matched thermal tracking between driver and output transistors, critical for stable biasing in Class AB audio stages.

It features an integrated collector-emitter antiparallel diode - not a discrete external component - providing inherent flyback path for inductive loads in switching applications. Electrical specifications are defined across –55 °C to +150 °C case temperature, with maximum junction temperature rated at 200 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - Maximum safe collector-emitter voltage with base open; defines usable rail voltage in linear and switching topologies.
I_C	20 A continuous - Sustained output current capability at T_C = 25 °C; determines heatsink sizing for thermal management.
h_FE	750–18,000 - High DC current gain enables low base drive current (e.g., 200 mA drives 20 A), reducing driver stage complexity.
V_CE(sat)	≤ 3 V at I_C = 20 A / I_B = 200 mA - Low saturation voltage minimizes conduction loss and heat generation in switching mode.
R_thj-case	1.09 °C/W - Junction-to-case thermal resistance directly determines temperature rise above heatsink for given power dissipation.
Integrated Diode	Collector-emitter antiparallel - Eliminates need for external flyback diode in relay/inductor drive circuits.

Pinout & Package

2N6287 uses the standard TO-3 metal package: case-connected collector (Pin 1), base (Pin 2), emitter (Pin 3). The metal case serves as both mechanical mounting surface and thermal path to heatsink.

Pin/Terminal	Circuit Role	Design Meaning
Case / Pin 1	Collector	Electrically connected to metal case; must be electrically isolated from heatsink unless circuit design requires common-collector reference.
Pin 2	Base	Input control terminal; driven via series resistor due to internal R1/R2 network; no external base resistor required for basic on/off operation.
Pin 3	Emitter	Output reference node; polarity inverted relative to NPN counterpart (2N6284); used as current sink in PNP configurations.

Key Features

Feature	Design Value
Monolithic Darlington structure	Single-die integration of driver and output transistors ensures precise thermal coupling and consistent gain matching across temperature.
Integrated antiparallel diode	Eliminates discrete diode placement and layout routing in inductive load switching, reducing BOM count and PCB area.
TO-3 metal package	Enables direct bolt-down to heatsink with low thermal impedance; supports high-power dissipation without thermal derating penalties.
High h_FE at full load	Minimum h_FE = 750 at I_C = 10 A ensures reliable saturation with modest base drive, easing microcontroller-level interfacing.

Applications

Audio Power Amplifier

DC-AC Converter

Use Scenario: Output stage in Class AB push-pull amplifier driving 4–8 Ω loudspeakers with 20–100 W RMS output.

IC Role / Device Role / Timing Role: PNP output switch complementing NPN 2N6284; handles negative half-cycle current sinking with low V_CE(sat) and high linearity.

Use Value: Monolithic gain and matched thermal behavior minimize crossover distortion and thermal runaway risk in analog audio paths.

Use Scenario: H-bridge or half-bridge in low-frequency (50–400 Hz) DC-AC inverters for battery-powered industrial tools or UPS subsystems.

IC Role / Device Role / Timing Role: High-current PNP switch in bridge leg; conducts during negative output half-cycle with integrated diode handling inductive kickback.

Use Value: Integrated antiparallel diode clamps inductive energy without external components, improving reliability and reducing EMI from snubber networks.

Relay Driver

Motor Control (DC Brushed)

Use Scenario: Driving 12–48 V, 5–15 A electromagnetic relays in PLC I/O modules or industrial control panels.

IC Role / Device Role / Timing Role: High-side PNP switch controlling relay coil current; base driven by optocoupler or logic-level signal with current-limiting resistor.

Use Value: 20 A rating accommodates relay inrush currents up to 40 A peak, while integrated diode suppresses coil back-EMF without added parts.

Use Scenario: Directional control and PWM-based speed regulation of 24–48 V, 10–20 A brushed DC motors in material handling equipment.

IC Role / Device Role / Timing Role: Low-side or high-side switching element in half-H or full-H configuration; handles bidirectional current with built-in diode conduction during freewheeling.

Use Value: R_thj-case = 1.09 °C/W allows sustained 15 A operation with moderate heatsinking, supporting duty cycles >60% in continuous motion control.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MJD127	TO-220 package, lower P_tot (50 W), h_FE min = 1000 at I_C = 2 A - not rated for 20 A continuous.	Suitable only for <10 A loads; lacks integrated diode; requires external flyback protection.	Select when board space constraints prohibit TO-3 and power demand is ≤8 A average.
TIP2955	TO-218 package, same 20 A/100 V rating, but non-Darlington (single PNP), h_FE = 20–70 - demands ~300 mA base drive for 20 A.	No integrated diode; higher V_CE(sat) (~4 V) increases conduction loss; requires external base resistor network.	Choose where Darlington gain is unnecessary and lower cost per unit outweighs drive complexity and thermal penalty.

Compared with MJD127 and TIP2955, the 2N6287 uniquely combines TO-3 thermal performance, monolithic Darlington gain, and integrated antiparallel diode - making it irreplaceable for high-current, thermally demanding, inductive-load switching where simplicity and reliability are prioritized over package miniaturization.

Availability

2N6287 is available at Aetrix Electronics and suitable for audio power amplifiers, DC-AC converters, relay drivers, and brushed DC motor controllers requiring stable component supply and long-term industrial availability.

Supply support for 2N6287 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 power devices for industrial, automotive, and consumer markets.

The 2N6287 belongs to ST's legacy power bipolar transistor family, engineered specifically for robust, high-current linear and switching applications where thermal stability, gain consistency, and integrated protection features are essential.

FAQ

Is the 2N6287 RoHS-compliant?

Yes, the 2N6287 is RoHS-compliant per STMicroelectronics' ECOPACK® program. It meets EU Directive 2011/65/EU requirements, with lead-free terminations and halogen-free molding compounds. Full compliance documentation is available in ST's official product change notices and ECOPACK® database.

Can the 2N6287 replace the 2N6284 in a circuit?

No - the 2N6287 is the PNP complement to the NPN 2N6284 and cannot functionally substitute for it. They are intended for use together in push-pull or complementary symmetry topologies. Swapping them would reverse polarity and cause immediate circuit failure or latch-up.

What is the purpose of the internal base resistors (R1 and R2)?

The internal R1 (~8 kΩ) and R2 (~60 kΩ) form a built-in bias network that enables single-resistor base drive. This eliminates the need for external base resistors in simple on/off switching, reduces component count, and improves turn-on/turn-off consistency across temperature and unit variation.

Does the integrated antiparallel diode have specified ratings?

Yes - the integrated diode shares the device's absolute maximum ratings: 100 V reverse voltage (V_R), 20 A forward current (I_F), and 160 W total dissipation. Its forward voltage drop is approximately 1.2 V at 20 A, measured under typical operating conditions per ST's characterization curves.

2N6287 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: TO-204AA, TO-3

Packaging:: Bulk

Product Status:: Active

Transistor Type:: PNP - Darlington

Current - Collector (Ic) (Max):: 20 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 3V @ 200mA, 20A

Current - Collector Cutoff (Max):: 1mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 1500 @ 1A, 3V

Power - Max:: 175 W

Frequency - Transition:: -

Operating Temperature:: -65°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-204AA (TO-3)

2N6287 FAQ

1.How can I place an order for 2N6287 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2N6287 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 2N6287 reliable?

The price and inventory of 2N6287 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2N6287 is usually 5 days.

3.What payment methods are accepted for 2N6287?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2N6287 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2N6287?

2N6287 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2N6287 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 2N6287?

For technical support, including 2N6287 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2N6287 requirements.

6.How does Aetrix verify that 2N6287 is sourced from the original manufacturer or authorized distributors?

All 2N6287 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 2N6287 meets industry standards.

7.What is the process for return or replacement of 2N6287?

All 2N6287 units undergo pre-shipment inspection (PSI). If there is an issue with 2N6287, 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 2N6287 part is unused and in its original packaging.

Return procedure for 2N6287:

1.Submit a request within 90 days.

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

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