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

STMicroelectronics BDW83C

Name: BDW83C
Brand: STMicroelectronics
SKU: BDW83C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BDW83C

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-247-3

Datasheet:: BDW83C.pdf

Description:: TRANS NPN DARL 100V 15A TO-247-3

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Product details

Overview

BDW83C from STMicroelectronics is an NPN silicon epitaxial-base power monolithic Darlington transistor in a TO-218 plastic package, designed for high-current linear and switching applications. It delivers 15 A continuous collector current, 100 V V_CEO, 130 W total dissipation at T_c ≤ 25 °C, and DC current gain (h_FE) of 750–20,000 at I_C = 6 A. It serves as the NPN complement to BDW84C in push-pull output stages of industrial motor drives and power supplies.

For engineers reviewing the BDW83C datasheet, BDW83C pinout, BDW83C application, or BDW83C equivalent, key selection criteria include sustained 15 A collector current capability, 0.96 °C/W junction-to-case thermal resistance, fast 0.9 µs turn-on time under resistive load, and verified operation up to 150 °C junction temperature in industrial ambient conditions.

Technical Context

The BDW83C integrates two cascaded NPN transistors in a single monolithic die to achieve high DC current gain while maintaining robust voltage blocking. Its Darlington configuration enables low base drive requirements-e.g., only 12 mA base current needed to sustain 6 A collector current-with V_BE(on) = 2.5 V at that condition.

It operates with V_CEO(sus) = 100 V under pulsed sustaining conditions and supports fast switching via 0.9 µs t_on and 6 µs t_off at V_CC = 30 V, I_C = 10 A, using matched base drive resistors. The integrated emitter-base diode exhibits V_F = 4 V at I_F = 10 A.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - Sustains full-rated collector-emitter voltage with zero base current, enabling use in 80 V DC bus switching stages.
I_C (continuous)	15 A - Supports high-power output stages without forced air cooling when mounted on ≥100 cm² heatsink with 0.96 °C/W R_thj-case.
h_FE	750–20,000 - Enables direct microcontroller GPIO drive (e.g., 3.3 V/20 mA) to switch >10 A loads without external pre-driver stage.
t_on/t_off	0.9 µs / 6 µs - Meets timing requirements for PWM frequencies up to 100 kHz in hard-switched industrial inverters.
R_thj-case	0.96 °C/W - Allows thermal design margin for 130 W dissipation at case temperature ≤ 25 °C, critical for sealed enclosure applications.
V_CE(sat)	2.5 V @ I_C = 6 A, I_B = 12 mA - Limits conduction loss to <15 W at 6 A, reducing heatsink size vs. standard bipolar transistors.

Pinout & Package

The BDW83C is housed in a Jedec-standard TO-218 (SOT-93) plastic power package with isolated mounting flange, rated for 130 W dissipation at T_c ≤ 25 °C and featuring 0.96 °C/W thermal resistance from junction to case.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Main current return path	Connected directly to heatsink-mounting flange; must be electrically isolated from chassis unless system ground reference permits.
2 (Base)	Control input for Darlington pair	Low-impedance input requiring current-limited drive; 12 mA sufficient for 6 A output, but 150 mA needed for full 15 A rating.
3 (Collector)	Main power output terminal	High-voltage, high-current node; rated for 100 V blocking and 40 A peak surge; connects to DC bus or transformer primary.

Key Features

Feature	Design Value
Monolithic Darlington structure	Single-die integration eliminates inter-device parameter mismatch and thermal drift between driver and output transistors.
High h_FE (min 750)	Reduces base drive circuit complexity and power loss-enables direct interface with logic-level controllers without buffer stages.
Fast switching (t_on = 0.9 µs)	Supports high-frequency PWM control in servo amplifiers and UPS inverters without excessive switching loss penalties.
150 °C max junction temperature	Enables reliable operation in enclosed industrial cabinets with ambient temperatures up to 85 °C when derated per thermal curve.
TO-218 mechanical outline	Standardized footprint compatible with existing heatsink clamps and mounting hardware used for TO-218/TO-247 legacy designs.

Applications

Industrial Motor Drive Output Stage

DC-DC Converter High-Side Switch

Use Scenario: H-bridge output stage driving 1–3 kW brushed DC motors in CNC feed axes.

IC Role / Device Role / Timing Role: NPN Darlington switch in complementary pair with BDW84C; handles bidirectional 12–48 V, 10–15 A load current.

Use Value: High h_FE reduces gate driver IC count; 100 V V_CEO accommodates back-EMF spikes during commutation.

Use Scenario: 400 W isolated forward converter operating at 50 kHz with 350 V input bus.

IC Role / Device Role / Timing Role: High-side main switch controlling primary-side energy transfer; driven by pulse transformer-coupled base signal.

Use Value: 0.9 µs t_on ensures minimal dead-time loss; 130 W P_tot allows 100% duty cycle at 10 A with adequate heatsinking.

Linear Regulator Pass Element

Induction Heater Half-Bridge Leg

Use Scenario: Adjustable 0–30 V / 0–10 A bench power supply with analog feedback loop.

IC Role / Device Role / Timing Role: Series pass transistor dissipating up to 100 W continuously; biased in active region by op-amp error amplifier.

Use Value: Low V_CE(sat) (2.5 V) minimizes dropout voltage; 150 °C T_jmax supports safe operation under sustained overload.

Use Scenario: 2.5 kW resonant induction heater operating at 20–50 kHz with parallel-loaded tank.

IC Role / Device Role / Timing Role: One leg of half-bridge inverter; switched with complementary BDW84C; conducts 15 A RMS fundamental current.

Use Value: Fast t_off (6 µs) limits overlap loss during zero-voltage switching transitions; TO-218 package enables direct bolt-down to water-cooled heatsink.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current Darlington transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BDW93C	V_CEO = 100 V, I_C = 15 A, but h_FE min = 500 (lower gain), R_thj-case = 1.1 °C/W (higher thermal resistance)	Suitable for lower-speed switching where base drive margin is available; less suitable for microcontroller-direct drive	Select BDW93C only if thermal budget allows higher case temperature rise or if lower gain simplifies stability compensation.
TIP142	V_CEO = 100 V, I_C = 10 A (5 A lower), h_FE min = 1000, TO-218 package, but no specified t_on/t_off data in datasheet	Better gain but limited current headroom; not validated for 15 A continuous conduction at 150 °C	Prefer TIP142 only in space-constrained designs where 10 A rating suffices and switching speed is non-critical.

Compared with BDW83C, BDW93C trades gain and thermal performance for cost-sensitive legacy designs, while TIP142 offers higher minimum h_FE but lacks current and thermal headroom for full 15 A industrial duty cycles-making BDW83C the optimal choice for thermally demanding, high-gain, fast-switching linear and switching power stages.

Availability

BDW83C is available at Aetrix Electronics and suitable for industrial motor drives, DC-DC converters, linear regulators, and induction heating systems requiring stable component supply across multi-year production lifecycles.

Supply support for BDW83C 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, specializing in power discrete devices, microcontrollers, and automotive ICs with vertical manufacturing and broad industrial qualification.

The BDW83C belongs to ST's high-power bipolar transistor family, engineered specifically for ruggedized industrial power conversion-emphasizing high current density, thermal robustness, and reliability under repetitive surge and elevated ambient conditions.

FAQ

What is the maximum safe operating current for BDW83C in continuous conduction mode?

The BDW83C is rated for 15 A continuous collector current (I_C) at case temperature ≤ 25 °C with adequate heatsinking. At higher case temperatures, current must be derated linearly per the datasheet curve-e.g., ~10 A at T_c = 80 °C. Exceeding 15 A without transient allowance risks thermal runaway due to positive temperature coefficient of V_BE.

Can BDW83C be used as a direct replacement for BDW93C in existing PCB layouts?

Yes-BDW83C shares identical TO-218 (SOT-93) mechanical dimensions, pinout (E-B-C), and mounting hole pattern with BDW93C. However, its higher h_FE and lower R_thj-case may reduce base drive requirements and improve thermal margin, potentially allowing relaxation of heatsink size or fan speed in upgraded designs.

Does BDW83C include an integrated antiparallel diode for inductive load freewheeling?

No-the BDW83C does not integrate a freewheeling diode. Its internal schematic shows only the Darlington pair. For inductive switching (e.g., motor or relay loads), an external fast-recovery diode (e.g., BYV26E) must be connected across C–E with cathode to collector to clamp inductive kickback and prevent secondary breakdown.

How does BDW83C's switching speed compare to standard bipolar transistors like TIP31C?

BDW83C achieves t_on = 0.9 µs and t_off = 6 µs under defined resistive-load conditions-up to 5× faster than TIP31C (t_on ≈ 4 µs, t_off ≈ 25 µs). This results from optimized monolithic Darlington layout and reduced minority-carrier storage, enabling efficient operation at 50–100 kHz PWM frequencies where TIP31C would suffer excessive switching loss.

BDW83C Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-247-3

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN - Darlington

Current - Collector (Ic) (Max):: 15 A

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

Vce Saturation (Max) @ Ib, Ic:: 4V @ 150mA, 15A

Current - Collector Cutoff (Max):: 1mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 750 @ 6A, 3V

Power - Max:: 130 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247-3

BDW83C FAQ

1.How can I place an order for BDW83C through Aetrix?

Please submit a Request for Quotation (RFQ) for BDW83C 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 BDW83C reliable?

The price and inventory of BDW83C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BDW83C is usually 5 days.

3.What payment methods are accepted for BDW83C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BDW83C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BDW83C?

BDW83C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BDW83C 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 BDW83C?

For technical support, including BDW83C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BDW83C requirements.

6.How does Aetrix verify that BDW83C is sourced from the original manufacturer or authorized distributors?

All BDW83C 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 BDW83C meets industry standards.

7.What is the process for return or replacement of BDW83C?

All BDW83C units undergo pre-shipment inspection (PSI). If there is an issue with BDW83C, 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 BDW83C part is unused and in its original packaging.

Return procedure for BDW83C:

1.Submit a request within 90 days.

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

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