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

STMicroelectronics BCP52-16

Name: BCP52-16
Brand: STMicroelectronics
SKU: BCP52-16
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCP52-16

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: BCP52-16.pdf

Description:: TRANS PNP 60V 1A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:8,351

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Product details

Overview

BCP52-16 from STMicroelectronics is a silicon epitaxial planar PNP medium-voltage transistor in SOT-223 package, rated for V_CEO = −60 V, I_C = −1 A, and P_tot = 1.4 W at T_amb = 25 °C. It serves as a medium-voltage load switch or audio output stage transistor in automotive post-voltage regulation circuits.

For engineers reviewing the BCP52-16 datasheet, BCP52-16 pinout, BCP52-16 application, or BCP52-16 equivalent, key selection criteria include guaranteed h_FE ≥ 40 at I_C = −5 mA, V_CE(sat) ≤ −0.5 V at I_C = −500 mA/I_B = −50 mA, f_T = 50 MHz, and thermal resistance R_thj-amb = 89.3 °C/W on 1 cm² PCB.

Technical Context

This PNP bipolar junction transistor operates in linear or switching mode with fixed-emitter biasing topology. Its −60 V breakdown ratings (V_CBO, V_CEO, V_CER) support medium-voltage DC load control up to 48 V automotive systems, while its 150 °C max junction temperature enables under-hood deployment.

The device features pulsed-rated peak currents (I_CM = −1.5 A, I_BM = −0.2 A) and low saturation voltage (−0.5 V), enabling efficient switching in power management stages where base drive current is limited to −50 mA and collector dissipation must remain below 1.4 W with PCB heatsinking.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−60 V: Maximum safe collector-emitter voltage with open base; defines upper rail limit for load-switch applications.
I_C	−1 A: Continuous DC collector current; sets maximum steady-state load current capability.
P_tot	1.4 W at T_amb = 25 °C: Total power dissipation limit; requires ≥1 cm² copper area for thermal compliance.
h_FE	40–250: DC current gain range across I_C = −5 mA to −500 mA; determines required base drive for target collector current.
f_T	50 MHz: Transition frequency at I_C = −10 mA/V_CE = −5 V; supports audio-frequency amplification and fast switching.
R_thj-amb	89.3 °C/W: Junction-to-ambient thermal resistance on 1 cm² PCB; used to calculate ΔT_j = P × R_th.

Pinout & Package

SOT-223 plastic surface-mount package with integrated heat slug (pin 2 connected to collector and tab). Standard 4-pin configuration with emitter (pin 1), base (pin 2), collector (pin 3), and collector/tab (pin 4).

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Main current exit terminal; connects to higher-potential rail in high-side switch configurations.
2	Base	Control input; requires −50 mA drive for full saturation at −500 mA collector current.
3	Collector	Main current entry terminal; electrically tied to pin 4 (heat slug) for thermal conduction to PCB.
4	Collector / Heat Slug	Thermal and electrical connection to collector; must be soldered to ≥1 cm² copper pour for thermal performance.

Key Features

Feature	Design Value
Medium-voltage rating	V_CEO = V_CB0 = V_CER = −60 V enables use in 48 V automotive subsystems without derating.
High-current capability	I_C = −1 A continuous and I_CM = −1.5 A pulsed support robust load switching in power rails.
Low saturation voltage	V_CE(sat) ≤ −0.5 V at I_C = −500 mA ensures <0.25 W conduction loss per transistor.
Stable gain over current range	h_FE ≥ 40 at I_C = −5 mA and ≥25 at I_C = −500 mA enables predictable base drive design.

Applications

Automotive Post-Voltage Regulation

Audio Amplifier Output Stage

Use Scenario: Regulating 12 V/24 V battery-derived supply after DC-DC conversion in infotainment ECUs.

IC Role / Device Role / Timing Role: High-side PNP pass transistor controlling output voltage via emitter-follower configuration.

Use Value: −60 V V_CEO withstands load-dump transients; −0.5 V V_CE(sat) minimizes dropout and self-heating.

Use Scenario: Driving 4–8 Ω speakers in Class-B or AB audio output stages of vehicle head units.

IC Role / Device Role / Timing Role: Complementary PNP output device paired with NPN BCP55-16 in push-pull topology.

Use Value: 50 MHz f_T preserves mid-band fidelity; h_FE ≥ 40 ensures stable bias current setting.

Medium-Voltage Load Switch

Industrial Sensor Power Control

Use Scenario: Enabling/disabling 24–48 V solenoid or relay coils in PLC I/O modules.

IC Role / Device Role / Timing Role: Single-transistor high-side switch controlled by microcontroller GPIO through base resistor.

Use Value: −1 A I_C rating handles inrush; R_thj-amb = 89.3 °C/W allows operation at 75 °C ambient with minimal heatsink.

Use Scenario: Sequencing power to analog sensor front-ends (e.g., pressure, temperature) in factory automation nodes.

IC Role / Device Role / Timing Role: Precision-controlled PNP switch isolating sensor V_CC during sleep or fault conditions.

Use Value: ICBO ≤ −100 nA at 25 °C and −10 µA at 125 °C prevents leakage-induced offset drift.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-voltage transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCP52-10	Lower h_FE range (25–160); same V_CEO/I_C/package	Less suitable for low-base-drive designs requiring >100 h_FE at I_C = −150 mA	Select when cost sensitivity outweighs gain margin needs and base drive is ample.
MJD2955T4G	TO-220 package; higher P_tot = 15 W; V_CEO = −60 V; I_C = −10 A	Requires mechanical mounting and larger PCB footprint; suited for >1 A continuous loads	Choose for higher-power, non-SMT implementations where thermal mass and heatsinking are available.

Compared with BCP52-10, the BCP52-16 offers higher minimum h_FE (40 vs. 25) for tighter base drive control; versus MJD2955T4G, it trades raw power handling for SMT compatibility and lower profile in space-constrained automotive modules.

Availability

BCP52-16 is available at Aetrix Electronics and suitable for automotive post-voltage regulation, audio amplifier output stages, and medium-voltage load switching requiring stable component supply and long-term industrial availability.

Supply support for BCP52-16 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, designing and manufacturing analog, digital, and mixed-signal ICs and discrete devices for automotive, industrial, and consumer markets.

The BCP52-16 belongs to ST's general-purpose bipolar transistor family, engineered specifically for medium-voltage, medium-current switching and amplification in automotive and industrial surface-mount applications.

FAQ

Is BCP52-16 suitable for high-frequency switching above 1 MHz?

Yes - with f_T = 50 MHz and pulsed-rated switching parameters, the BCP52-16 supports clean turn-on/turn-off in PWM-based 20–500 kHz power control circuits. However, layout parasitics and base drive strength become critical above 100 kHz; gate-driving with active base pull-down is recommended for reliable edge control.

What is the maximum allowable PCB copper area for thermal performance?

The datasheet specifies R_thj-amb = 89.3 °C/W with a 1 cm² copper pad. Increasing copper area beyond this yields diminishing returns; doubling to 2 cm² typically improves R_th by only ~15%. For ambient temperatures exceeding 75 °C, a dedicated thermal via array under the collector tab is strongly advised.

Can BCP52-16 replace BC807-25 in SOT-23 footprint designs?

No - BCP52-16 uses SOT-223 (4-pin, 6.5 mm × 3.5 mm), while BC807-25 is SOT-23 (3-pin, 3.0 mm × 1.4 mm). Pin count, pitch, thermal pad, and current rating differ significantly. Direct replacement would require PCB redesign and thermal revalidation due to 10× higher power dissipation capability.

Does BCP52-16 have AEC-Q101 qualification for automotive use?

No - the BCP52-16 is not AEC-Q101 qualified. While widely used in automotive post-regulation circuits, STMicroelectronics does not list it in their AEC-Q101 stress-tested portfolio. For safety-critical or ASIL-compliant designs, consider the AEC-Q101-qualified MJD2955T4G or ST's dedicated automotive-grade PNP transistors like the NSS12201LT1G.

BCP52-16 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 50mA, 500mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 2V

Power - Max:: 1.4 W

Frequency - Transition:: 50MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

BCP52-16 FAQ

1.How can I place an order for BCP52-16 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCP52-16 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 BCP52-16 reliable?

The price and inventory of BCP52-16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP52-16 is usually 5 days.

3.What payment methods are accepted for BCP52-16?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP52-16 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCP52-16?

BCP52-16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCP52-16 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 BCP52-16?

For technical support, including BCP52-16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP52-16 requirements.

6.How does Aetrix verify that BCP52-16 is sourced from the original manufacturer or authorized distributors?

All BCP52-16 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 BCP52-16 meets industry standards.

7.What is the process for return or replacement of BCP52-16?

All BCP52-16 units undergo pre-shipment inspection (PSI). If there is an issue with BCP52-16, 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 BCP52-16 part is unused and in its original packaging.

Return procedure for BCP52-16:

1.Submit a request within 90 days.

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

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