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Nexperia USA Inc. BCP54,135
- Part No.:
- BCP54,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP54,135.pdf
- Description:
- TRANS NPN 45V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
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Product details
Overview
BCP54,135 from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT223 (SC-73) package, rated for 45 V VCEO, 1 A continuous collector current, and 1.35 W power dissipation with 6 cm² copper pad. It delivers hFE of 63–250 at IC = 150 mA and supports linear voltage regulation and low-side switching in automotive power management systems.
For engineers reviewing the BCP54,135 datasheet, BCP54,135 pinout, BCP54,135 application, or BCP54,135 equivalent, this page provides verified pin functions, thermal derating curves, hFE binning details (BCP54-10/BCP54-16 variants), and validated alternatives for MOSFET driver and battery-driven device designs.
Technical Context
This transistor operates as a medium-power NPN switch or linear amplifier with open-base VCEO = 45 V and peak ICM = 2 A (1 ms pulse). Its fT = 100–180 MHz enables stable operation in high-frequency switching drivers, while VBE ≤ 1 V at IC = 500 mA ensures predictable base drive requirements.
Thermal resistance Rth(j-a) ranges from 93 K/W (6 cm² pad) to 195 K/W (standard footprint), directly linking PCB layout to safe operating area. The dual-collector pin (pins 2 & 4) enhances current handling and thermal spreading in SOT223's thermally optimized leadframe.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in 24 V automotive and 36 V industrial supplies. |
| IC | 1 A continuous - Sustained collector current rating; supports load switching up to ~12 W at 12 V with adequate heatsinking. |
| hFE | 63–250 at VCE = 2 V, IC = 150 mA - Current gain spread enables precise biasing in analog amplifiers and predictable saturation in digital switches. |
| Ptot | 1.35 W with 6 cm² copper pad - Thermal limit defining maximum power delivery under sustained DC or pulsed conditions on standard FR4 PCB. |
| fT | 100–180 MHz - Transition frequency confirming suitability for >10 MHz switching applications such as gate driving for logic-level MOSFETs. |
| VCE(sat) | ≤ 0.5 V at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss and self-heating in low-side switch configurations. |
| Rth(j-a) | 93 K/W (6 cm² pad) - Junction-to-ambient thermal resistance used to calculate temperature rise ΔT = P × Rth for reliability validation. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with 4 leads, featuring extended copper tab (pins 2 & 4) for enhanced thermal conduction and mechanical stability. Package outline conforms to JEDEC MO-178AA, with 6.7 mm × 3.7 mm body and 1.1 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node requiring ~50 mA base drive for full 500 mA collector conduction; sensitive to ESD per AEC-Q101 qualification. |
| 2 | Collector | Main current-carrying terminal tied to internal die emitter-side metallization; electrically and thermally connected to pin 4. |
| 3 | Emiter | Reference node for biasing; must be connected to lowest potential in low-side switch topology to ensure proper VBE forward bias. |
| 4 | Collector | Duplicate collector terminal providing parallel current path and improved thermal transfer to PCB copper pour; not isolated from pin 2. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood use including temperature cycling (-55 °C to 150 °C) and humidity testing; eliminates requalification effort for Tier 1 suppliers. |
| Dual-collector thermal design | Pins 2 and 4 share collector connection, enabling 2× current sharing and reducing effective Rth(j-sp) by ~30% vs. single-pin packages. |
| Three hFE bins | BCP54 (63–250), BCP54-10 (63–160), BCP54-16 (100–250) - Enables consistent gain matching across production lots without custom binning. |
| High Ptot scalability | 1.35 W max with 6 cm² pad - Delivers 3.5× more power than standard SOT23 equivalents, supporting higher-current loads without TO-220 redesign. |
| Low VCE(sat) | ≤ 0.5 V at IC/IB = 10 - Reduces switching losses in PWM-controlled battery disconnect circuits and improves efficiency in 5–12 V linear regulators. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable 3-terminal linear regulator delivering 1.2–24 V at up to 800 mA. IC Role / Device Role / Timing Role: NPN series pass element controlling output voltage via feedback loop; operates in active region with continuous conduction. Use Value: VCE(sat) ≤ 0.5 V and hFE ≥ 63 ensure stable regulation under load transients without external boost circuitry. |
Use Scenario: Level-shifting driver stage for N-channel MOSFET gates in half-bridge motor control. IC Role / Device Role / Timing Role: High-speed NPN switch turning gate resistor network on/off; requires fT > 100 MHz for <100 ns rise times. Use Value: fT = 180 MHz and ICM = 2 A support 20 kHz PWM switching with minimal gate drive delay and overshoot. |
| Low-Side Switches | Battery-Driven Devices |
|
Use Scenario: Load switch enabling/disabling 12 V accessories (fans, sensors, LEDs) in automotive body control modules. IC Role / Device Role / Timing Role: Saturated NPN switch sinking current to ground; driven by microcontroller GPIO with base resistor. Use Value: IC = 1 A and AEC-Q101 qualification guarantee reliable operation across vehicle life cycle and temperature extremes. |
Use Scenario: Power path controller in portable medical monitors or handheld test equipment powered by Li-ion packs. IC Role / Device Role / Timing Role: Reverse-polarity protection and load enable switch placed between battery and system rail. Use Value: VCEO = 45 V accommodates 3S Li-ion (12.6 V) with margin for surge; low VBE ≤ 1 V ensures compatibility with 3.3 V MCU outputs. |
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 | VCEO = 60 V, IC = 1 A, hFE = 100–800, SOT89 package | Higher voltage rating but lower thermal performance (Rth(j-a) ≈ 125 K/W); no AEC-Q101 qualification | Select when >45 V headroom is required and automotive qualification is unnecessary. |
| MMBT4401 | VCEO = 40 V, IC = 600 mA, hFE = 100–300, SOT23 package | Lower current/power capability (0.35 W), smaller footprint, no dual-collector thermal path | Choose for space-constrained consumer designs where 600 mA load current suffices and AEC-Q101 is not mandated. |
Compared with ZTX653 and MMBT4401, BCP54,135 offers superior thermal management via SOT223 dual-collector construction and automotive-grade reliability-critical for sustained 1 A operation in engine bay or industrial environments where ambient temperatures exceed 85 °C.
Availability
BCP54,135 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in automotive, industrial control, and battery-powered instrumentation.
Supply support for BCP54,135 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 essential efficiency technologies, delivering high-performance, high-reliability discrete and logic devices for automotive, industrial, and mobile markets.
The BCP54 series belongs to Nexperia's AEC-Q101-qualified medium-power bipolar portfolio, engineered specifically for robust linear regulation, switching, and driver functions in harsh-environment automotive subsystems.
FAQ
What is the maximum continuous collector current for BCP54,135?
The BCP54,135 supports 1 A continuous collector current (IC) at Tamb ≤ 25 °C with adequate PCB copper area. Derating applies above 25 °C per Fig. 1: at 100 °C ambient, max IC drops to ~0.65 A with 6 cm² pad due to thermal limits.
Does BCP54,135 have automotive qualification?
Yes, BCP54,135 is fully qualified to AEC-Q101 Rev. D for discrete semiconductors, including stress tests for temperature cycling, humidity, and high-temperature operating life-making it suitable for under-hood and chassis-mounted automotive applications.
How does the dual-collector pin configuration improve thermal performance?
Pins 2 and 4 are internally shorted to the collector, doubling the copper interface area to the PCB. This reduces effective junction-to-solder-point thermal resistance by ~30%, enabling 1.35 W dissipation with 6 cm² pad versus 0.65 W in standard SOT23 equivalents.
What hFE bin does BCP54,135 correspond to?
BCP54,135 is the base variant with hFE = 63–250 at VCE = 2 V and IC = 150 mA. It is distinct from BCP54-10 (63–160) and BCP54-16 (100–250); marking code "BCP54" on device confirms this bin per Table 4.
BCP54,135 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):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 500mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 63 @ 150mA, 2V
- Power - Max:
- 960 mW
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP54,135 FAQ
1.How can I place an order for BCP54,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP54,135 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 BCP54,135 reliable?
The price and inventory of BCP54,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP54,135 is usually 5 days.
3.What payment methods are accepted for BCP54,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP54,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP54,135?
BCP54,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP54,135 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 BCP54,135?
For technical support, including BCP54,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP54,135 requirements.
6.How does Aetrix verify that BCP54,135 is sourced from the original manufacturer or authorized distributors?
All BCP54,135 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 BCP54,135 meets industry standards.
7.What is the process for return or replacement of BCP54,135?
All BCP54,135 units undergo pre-shipment inspection (PSI). If there is an issue with BCP54,135, 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 BCP54,135 part is unused and in its original packaging.
Return procedure for BCP54,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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