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

Nexperia USA Inc. BCP56-16,135

Name: BCP56-16,135
Brand: Nexperia USA Inc.
SKU: BCP56-16,135
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCP56-16,135

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCP56-16,135.pdf

Description:: TRANS NPN 80V 1A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:24,652

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Product details

Overview

BCP56-16,135 from Nexperia is an NPN medium power bipolar junction transistor in SOT223 (SC-73) package, rated for 80 V V_CEO, 1 A continuous collector current, and 2 A peak pulse current. It delivers DC current gain (h_FE) of 100–250 at V_CE = 2 V and I_C = 150 mA, and supports linear voltage regulation, MOSFET gate driving, and low-side switching in battery-powered industrial control modules.

For engineers reviewing the BCP56-16,135 datasheet, BCP56-16,135 pinout, BCP56-16,135 application, or BCP56-16,135 equivalent, this page provides verified package mapping, thermal derating curves, h_FE binning details, saturation voltage under 500 mA drive, and validated alternatives for discrete power switching designs.

Technical Context

The BCP56-16,135 operates as a single NPN silicon transistor with open-base breakdown voltage of 80 V and emitter-base rating of 5 V. Its pulsed h_FE range (100–250) is specified under 300 µs pulses at 2% duty cycle, enabling reliable switching in intermittent-load applications like relay drivers and PWM-controlled LED dimmers.

Thermal performance depends on PCB mounting: total power dissipation reaches 1.35 W only when mounted on FR4 with a 6 cm² copper pad on the collector leads; standard footprint limits P_tot to 0.65 W. Junction-to-ambient thermal resistance drops from 192 K/W (standard) to 93 K/W (6 cm² pad), directly impacting safe operating area in sustained conduction.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - Maximum collector-emitter voltage before breakdown with base open; defines maximum supply rail compatibility in low-side switch configurations.
I_C	1 A continuous - Rated DC collector current; determines maximum steady-state load handling in linear regulators or driver stages.
h_FE	100–250 at V_CE = 2 V, I_C = 150 mA - Confirmed current gain bin for BCP56-16; enables predictable base drive sizing for 150 mA output loads.
V_CE(sat)	≤ 500 mV at I_C = 500 mA, I_B = 50 mA - Low saturation voltage ensures <0.25 W conduction loss at half-amp load, critical for thermal efficiency in compact PCB layouts.
f_T	100–180 MHz - Transition frequency confirms usable bandwidth up to ~50 MHz for small-signal amplification or fast-switching gate drive.
R_th(j-a)	93 K/W with 6 cm² collector pad - Thermal resistance value used to calculate junction temperature rise under 1.35 W dissipation; requires explicit PCB copper design.

Pinout & Package

SOT223 (SC-73) surface-mount plastic package with four terminals: pins 1 and 4 are internally connected to the collector, pin 2 is collector (exposed tab), pin 3 is emitter, and pin 1 is base - optimized for thermal conduction via the large collector pad and dual collector terminations.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input node; requires ≤0.3 A peak base current; connects to microcontroller GPIO or driver IC output.
2	Collector	Main high-current output path; electrically tied to pin 4 and exposed metal tab; must be soldered to ≥1 cm² copper for rated power handling.
3	Emiter	Reference/return node for load current; common connection point for emitter resistors or current sensing in linear regulator feedback paths.
4	Collector	Secondary collector terminal; redundant connection to pin 2 and tab; improves solder joint reliability and current sharing in high-vibration environments.

Key Features

Feature	Design Value
Three h_FE bins	BCP56-16 offers 100–250 h_FE, enabling precise base resistor selection without gain variation margining in production designs.
High power dissipation	1.35 W achievable with 6 cm² collector copper pad - supports higher continuous current than TO-92 or SOT-23 alternatives in space-constrained power stages.
Peak current capability	2 A single-pulse rating (t_p ≤ 1 ms) allows brief surge handling in motor startup or solenoid actuation circuits.
Low V_CE(sat)	≤500 mV at 500 mA/50 mA drive reduces conduction losses by >30% versus standard general-purpose transistors like BC817.

Applications

Linear Voltage Regulators

MOSFET Drivers

Use Scenario: Adjustable 5–24 V linear regulator using LM317-style topology with pass transistor.

IC Role / Device Role / Timing Role: Pass transistor controlling output current and dissipating excess voltage drop between input and regulated output.

Use Value: 80 V V_CEO headroom accommodates 36 V input rails; 1.35 W dissipation supports ≥1 A output with <15 °C/W heatsink-equivalent PCB layout.

Use Scenario: Driving N-channel logic-level MOSFET gates in 12 V automotive body-control modules.

IC Role / Device Role / Timing Role: Medium-current buffer stage translating MCU GPIO signals to 100–500 mA gate charge/discharge pulses.

Use Value: 180 MHz f_T ensures sub-100 ns switching transitions; dual-collector pinout improves thermal stability during repetitive gate charging.

Low-Side Switches

Battery-Driven Devices

Use Scenario: Controlling 12 V DC fans, solenoids, or indicator LEDs in industrial HMIs.

IC Role / Device Role / Timing Role: Ground-referenced switch connecting load to ground upon base activation.

Use Value: 2 A peak rating handles fan inrush; 500 mV V_CE(sat) minimizes self-heating during continuous 800 mA operation.

Use Scenario: Power path management in portable test equipment powered by Li-ion or alkaline battery packs.

IC Role / Device Role / Timing Role: Load switch enabling/disabling subsystems to extend battery life and prevent deep discharge.

Use Value: 5 V V_EBO rating prevents damage from reverse-battery insertion; SOT223 footprint allows manual rework without thermal stress on adjacent components.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN medium power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZTX653	Higher V_CEO (100 V), lower h_FE (20–200), same SOT223 package	Better suited for 48 V bus systems but requires larger base drive due to lower gain spread	Select when higher breakdown voltage is mandatory and gain tolerance can be relaxed.
BCX56-16	Identical h_FE bin (100–250), same V_CEO/I_C, but TO-126 package with higher R_th(j-a) (125 K/W)	Requires through-hole assembly and external heatsinking for >0.8 W dissipation	Choose only if legacy through-hole manufacturing is required and thermal budget permits.

Compared with ZTX653 and BCX56-16, BCP56-16,135 delivers optimal balance of gain consistency, thermal performance on FR4, and surface-mount manufacturability - making it preferred for new SMT-based power management designs where board space and thermal reliability are constrained.

Availability

BCP56-16,135 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply across industrial automation, battery-powered instrumentation, and embedded power management systems.

Supply support for BCP56-16,135 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability essential semiconductors including logic, discretes, MOSFETs, and ESD protection devices.

The BCP56 series belongs to Nexperia's medium-power bipolar transistor product line, engineered specifically for robust, cost-effective switching and amplification in industrial and consumer power management applications.

FAQ

What is the maximum allowable junction temperature for BCP56-16,135?

The absolute maximum junction temperature is 150 °C per IEC 60134 limiting values. Operation above this threshold causes permanent degradation. Derating is required above 25 °C ambient: for example, at 75 °C ambient, maximum power dissipation drops to ~0.8 W on a 6 cm² pad (based on 93 K/W R_th(j-a)).

Can BCP56-16,135 replace BC817-40 in a 500 mA load switch?

Yes - BCP56-16,135 offers higher current rating (1 A vs. 500 mA), lower V_CE(sat) (≤500 mV vs. ≤700 mV), and superior thermal performance. However, its SOT223 footprint is incompatible with BC817's SOT-23 layout, requiring PCB redesign and verification of base drive compatibility due to higher h_FE.

Is BCP56-16,135 qualified for automotive applications?

No - the datasheet explicitly states this device is non-automotive qualified (Rev. 11, Section 14). It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. For automotive use, Nexperia recommends the -Q qualified variants such as BCP56-16Q.

How does the dual-collector pin configuration affect PCB layout?

Pins 2 and 4 are both collector terminals, internally bonded to the same die region and the exposed metal tab. This configuration allows routing collector current through two parallel traces or solder joints, reducing current density per trace and improving mechanical reliability - especially beneficial in high-vibration or thermally cycled environments.

BCP56-16,135 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 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:: 100 @ 150mA, 2V

Power - Max:: 650 mW

Frequency - Transition:: 180MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

BCP56-16,135 FAQ

1.How can I place an order for BCP56-16,135 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCP56-16,135 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 BCP56-16,135 reliable?

The price and inventory of BCP56-16,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP56-16,135 is usually 5 days.

3.What payment methods are accepted for BCP56-16,135?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP56-16,135 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCP56-16,135?

BCP56-16,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCP56-16,135 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 BCP56-16,135?

For technical support, including BCP56-16,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP56-16,135 requirements.

6.How does Aetrix verify that BCP56-16,135 is sourced from the original manufacturer or authorized distributors?

All BCP56-16,135 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 BCP56-16,135 meets industry standards.

7.What is the process for return or replacement of BCP56-16,135?

All BCP56-16,135 units undergo pre-shipment inspection (PSI). If there is an issue with BCP56-16,135, 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 BCP56-16,135 part is unused and in its original packaging.

Return procedure for BCP56-16,135:

1.Submit a request within 90 days.

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

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