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

STMicroelectronics BDW93CFP

Name: BDW93CFP
Brand: STMicroelectronics
SKU: BDW93CFP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BDW93CFP

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-220-3 Full Pack

Datasheet:: BDW93CFP.pdf

Description:: TRANS NPN DARL 100V 12A TO-220FP

Quantity:: RFQ Add To RFQ list

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Inventory:1,043

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Product details

Overview

BDW93CFP from STMicroelectronics is a monolithic NPN silicon power Darlington transistor in TO-220FP insulated package, rated for 100 V V_CEO, 12 A I_C, and 33 W P_tot at T_c ≤ 25 °C, with integrated antiparallel collector-emitter diode and 2000 V DC insulation. It serves as a high-gain switching/linear power stage in industrial motor drives and AC line-switching circuits.

For engineers reviewing the BDW93CFP datasheet, BDW93CFP pinout, BDW93CFP application, or BDW93CFP equivalent, key selection factors include its 1000–20000 h_FE range at 3–10 A, 2.5–4 V V_BE(sat), 1.3–2 V forward diode drop, 3.8 °C/W R_thj-case, and U.L.-compliant insulation for safety-critical mains-connected equipment.

Technical Context

The BDW93CFP integrates a Darlington pair (main + driver transistor) and an antiparallel diode on a single die, enabling self-commutating switching without external flyback protection in inductive load control. Its monolithic construction ensures matched thermal behavior and precise current gain tracking across operating conditions.

Designed for operation up to 150 °C junction temperature, it supports continuous conduction mode in linear regulators and pulsed switching (300 µs, 1.5% duty cycle) in high-voltage industrial inverters. The TO-220FP package provides full electrical isolation between mounting surface and internal leads, eliminating need for insulating washers in heatsink assembly.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100 V - Maximum collector-emitter blocking voltage under open-base condition; defines safe operating voltage in switching applications.
I_C	12 A - Continuous collector current rating at case temperature ≤25 °C; determines maximum steady-state load drive capability.
P_tot	33 W - Total power dissipation limit at T_c = 25 °C; sets thermal design baseline for heatsink sizing.
h_FE	1000–20000 - DC current gain at I_C = 3–10 A; enables low base drive current (e.g., 20 mA for 5 A output), reducing driver stage complexity.
R_thj-case	3.8 °C/W - Junction-to-case thermal resistance; directly determines temperature rise above heatsink for given power dissipation.
V_F	1.3–2 V - Forward voltage of integrated antiparallel diode at 5–10 A; clamps inductive kickback and eliminates discrete freewheeling diode.

Pinout & Package

TO-220FP fully molded insulated package with creepage/clearance compliant to UL 2000 V DC requirements; electrically isolated metal tab enables direct heatsink mounting without insulator.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Main emitter terminal of Darlington pair	Low-impedance return path for full load current; connected to system ground or negative rail in common-emitter configuration.
2 (Base)	Control input for Darlington pair	Accepts low-current drive signal (≤200 mA max); internal 10 kΩ resistor to emitter simplifies biasing in switch-mode use.
3 (Collector)	Main collector terminal of Darlington pair	High-voltage, high-current output node; connects to load or supply rail depending on circuit topology.

Key Features

Feature	Design Value
Monolithic Darlington configuration	Single-die integration of driver and main transistor ensures matched thermal drift and eliminates inter-device timing skew in high-speed switching.
Integrated antiparallel diode	Eliminates need for external freewheeling diode in inductive load switching, reducing BOM count and PCB area in motor control modules.
UL-rated 2000 V DC insulation	Enables direct mounting to grounded heatsinks in Class I mains-connected equipment without additional isolation hardware.
High h_FE at high current	Maintains minimum gain of 100 at I_C = 10 A, allowing robust saturation with modest base drive even under elevated temperature.

Applications

Industrial AC Motor Control

Linear Power Supply Regulator

Use Scenario: Driving 1–3 kW single-phase induction motors in HVAC blowers and pump controllers using phase-angle or burst-fire AC switching.

IC Role / Device Role / Timing Role: Main power switch in back-to-back thyristor replacement topology, handling full line current with zero-crossing synchronized gate drive.

Use Value: Integrated diode absorbs reactive energy during commutation; high h_FE reduces gate driver power requirement by >70% vs. single bipolar transistor.

Use Scenario: Pass element in adjustable 0–60 V / 5 A linear bench power supply with foldback current limiting.

IC Role / Device Role / Timing Role: Series pass transistor regulating output voltage via feedback-controlled base current; operates in linear region with forced-air cooling.

Use Value: 33 W dissipation rating and 3.8 °C/W thermal resistance enable stable 30 W continuous operation at 70 °C heatsink temperature.

Switched-Mode Power Supply Snubber

DC-DC Converter High-Side Switch

Use Scenario: Clamping voltage spikes in flyback transformer primary windings of 500 W industrial SMPS.

IC Role / Device Role / Timing Role: Active snubber transistor triggered synchronously with main MOSFET turn-off to absorb leakage inductance energy.

Use Value: 100 V V_CEO withstands reflected flyback voltage; 15 A I_CM peak rating handles transient surge currents without second breakdown.

Use Scenario: High-side switch in 24 V input, 12 V output synchronous buck converter for PLC I/O modules.

IC Role / Device Role / Timing Role: Upper switch in N-channel MOSFET driver stage, delivering gate charge pulses to power FETs with minimal propagation delay.

Use Value: Low V_BE(sat) (2.5 V @ 5 A) minimizes driver-stage conduction loss; TO-220FP isolation prevents ground loop coupling in multi-rail systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage Darlington switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BDW93B	Same die but in non-insulated TO-220 package; no UL-rated isolation; R_thj-case = 3.0 °C/W.	Requires insulating kit for grounded heatsink mounting; unsuitable for safety-certified mains-connected designs.	Select when cost-sensitive and isolation handled externally; verify creepage distance compliance per end-equipment standard.
TIP142	Lower V_CEO (100 V same), but no integrated diode; h_FE min = 1000 only at I_C = 3 A; R_thj-case = 2.5 °C/W.	Needs external freewheeling diode; higher base drive required above 5 A due to h_FE roll-off.	Choose where diode can be added discretely and thermal margin allows lower R_th; avoid in space-constrained or safety-critical layouts.

Compared with BDW93B and TIP142, the BDW93CFP uniquely combines UL-compliant insulation, integrated diode, and sustained high h_FE at 10 A-making it optimal for compact, certified industrial switching modules where BOM reduction and safety compliance are mandatory.

Availability

BDW93CFP is available at Aetrix Electronics and suitable for industrial motor control, linear power regulation, switched-mode snubbing, and high-side DC-DC conversion requiring stable component supply and long-term lifecycle support.

Supply support for BDW93CFP 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The BDW93CFP belongs to ST's high-voltage power bipolar transistor family, engineered specifically for ruggedized industrial switching and linear power stages where reliability under thermal stress and safety certification are critical.

FAQ

What is the maximum safe operating voltage for BDW93CFP in switching applications?

The BDW93CFP has a guaranteed V_CEO of 100 V under open-base conditions, and a V_CEO(sus) of 100 V at I_C = 100 mA. For reliable switching, derate to ≤80 V in inductive loads with unclamped transients, and ensure layout minimizes voltage overshoot via proper snubbing and grounding.

Does BDW93CFP require external base resistors for safe operation?

Yes - although an internal 10 kΩ base-to-emitter resistor is present, external base current limiting remains essential. At I_C = 10 A, typical h_FE is ~100, requiring ≥100 mA base drive; an external series resistor must limit peak IB to ≤200 mA and ensure stable bias under temperature variation.

Can BDW93CFP replace BDW93 in existing TO-220 designs?

No - BDW93CFP uses the insulated TO-220FP package with different pin pitch and isolated tab, making it mechanically incompatible with standard TO-220 footprints. PCB layout and heatsink interface must be redesigned to accommodate the FP variant's insulation and mounting requirements.

How does the integrated diode affect safe operating area (SOA) in repetitive pulse operation?

The integrated antiparallel diode extends the SOA during turn-off by providing a controlled path for inductive current decay, preventing secondary breakdown. However, diode forward voltage (1.3–2 V) adds conduction loss during freewheeling, requiring thermal derating if diode conduction occupies >30% of switching period at full load.

BDW93CFP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-220-3 Full Pack

Packaging:: Tube

Product Status:: Active

Transistor Type:: NPN - Darlington

Current - Collector (Ic) (Max):: 12 A

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

Vce Saturation (Max) @ Ib, Ic:: 3V @ 100mA, 10A

Current - Collector Cutoff (Max):: 1mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 750 @ 5A, 3V

Power - Max:: 33 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220FP

BDW93CFP FAQ

1.How can I place an order for BDW93CFP through Aetrix?

Please submit a Request for Quotation (RFQ) for BDW93CFP 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 BDW93CFP reliable?

The price and inventory of BDW93CFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BDW93CFP is usually 5 days.

3.What payment methods are accepted for BDW93CFP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BDW93CFP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BDW93CFP?

BDW93CFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BDW93CFP 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 BDW93CFP?

For technical support, including BDW93CFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BDW93CFP requirements.

6.How does Aetrix verify that BDW93CFP is sourced from the original manufacturer or authorized distributors?

All BDW93CFP 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 BDW93CFP meets industry standards.

7.What is the process for return or replacement of BDW93CFP?

All BDW93CFP units undergo pre-shipment inspection (PSI). If there is an issue with BDW93CFP, 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 BDW93CFP part is unused and in its original packaging.

Return procedure for BDW93CFP:

1.Submit a request within 90 days.

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

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