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Nexperia USA Inc. BCP51-16,135
- Part No.:
- BCP51-16,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP51-16,135.pdf
- Description:
- TRANS PNP 45V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:9,484
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Product details
Overview
BCP51-16,135 from Nexperia is a PNP medium power transistor in SOT223 (SC-73) surface-mount package, rated for −45 V VCEO, −1 A continuous collector current, and 0.65 W power dissipation on standard FR4 PCB. It features hFE of 100–250 at IC = −150 mA and is AEC-Q101 qualified for automotive-grade reliability. It serves as a high-side switch or linear regulator pass element in battery-powered industrial control modules.
For engineers reviewing the BCP51-16,135 datasheet, BCP51-16,135 pinout, BCP51-16,135 application, or BCP51-16,135 equivalent, this page delivers verified package mapping (SOT223), thermal resistance (Rth(j-a) = 192 K/W standard footprint), DC current gain range, saturation voltage (VCEsat ≤ −0.5 V @ IC = −500 mA), and AEC-Q101 qualification status - all critical for automotive power stage and linear regulation design validation.
Technical Context
This device operates as a silicon PNP bipolar junction transistor optimized for medium-power switching and linear amplification. Its SOT223 package includes an exposed collector pad (pins 2 and 4) enabling direct thermal coupling to PCB copper, supporting up to 1.35 W dissipation with 6 cm² collector pad area.
It delivers stable hFE across −55 °C to +150 °C ambient, with guaranteed minimum hFE = 100 at −150 mA collector current and −2 V VCE. The −0.5 V VCEsat at IC/IB = 10 ensures low conduction loss in high-side switch configurations driving loads up to 1 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum safe collector-emitter voltage with base open; defines high-side switch voltage headroom in 24 V automotive systems. |
| IC (continuous) | −1 A - Continuous DC collector current rating; supports load switching up to 1 A without forced cooling. |
| hFE (selection -16) | 100–250 @ VCE = −2 V, IC = −150 mA - Tighter gain bin enables predictable base drive sizing in linear regulators. |
| VCEsat | ≤ −0.5 V @ IC = −500 mA, IB = −50 mA - Low saturation voltage minimizes power loss and heat generation in switching applications. |
| Ptot (standard FR4) | 0.65 W - Total power dissipation on single-layer FR4 with standard footprint; determines thermal layout requirements. |
| Rth(j-a) | 192 K/W - Junction-to-ambient thermal resistance under standard mounting; used to calculate max junction temperature rise. |
| AEC-Q101 qualified | Yes - Certified for automotive applications per stress test qualification standard; supports use in engine control, body electronics. |
Pinout & Package
SOT223 (SC-73) plastic surface-mounted package with 4 leads: pins 1 (base), 2 (collector), 3 (emitter), and 4 (collector). The dual collector terminals provide enhanced thermal and electrical conductivity via large copper pad exposure on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input terminal; requires −50 mA base drive for full saturation at −500 mA collector current. |
| 2 | Collector | Main current-carrying terminal; electrically and thermally connected to exposed pad for PCB heat sinking. |
| 3 | Emitter | Reference terminal for PNP operation; tied to higher potential rail in high-side switch configuration. |
| 4 | Collector | Second collector connection; paralleled with pin 2 to reduce bond wire inductance and improve thermal path. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE selections | Selection -16 provides 100–250 hFE, enabling precise base resistor selection for consistent turn-on behavior across production lots. |
| Exposed collector pad | Dual collector terminals (pins 2 & 4) connect directly to PCB copper, reducing Rth(j-sp) to 16 K/W and improving thermal stability. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing - eliminates need for additional qualification effort. |
| High power dissipation capability | Up to 1.35 W with 6 cm² collector pad area on FR4 - supports compact designs without heatsinks in moderate-power applications. |
Applications
| Linear Voltage Regulators | High-Side Switches |
|---|---|
|
Use Scenario: Pass transistor in adjustable 5–12 V linear regulators powering microcontrollers and sensors in automotive ECUs. IC Role / Device Role / Timing Role: PNP pass element controlling output voltage via base bias; operates in active region for regulation. Use Value: −0.5 V VCEsat and 100–250 hFE enable stable dropout voltage and minimal base drive overhead. |
Use Scenario: High-side load switch controlling 12 V solenoids or relays in vehicle body control modules. IC Role / Device Role / Timing Role: PNP switch turning ON/OFF load between battery rail and ground; driven by MCU GPIO through base resistor. Use Value: −45 V VCEO withstands load dump transients; AEC-Q101 qualification ensures reliability in harsh environments. |
| Battery-Driven Devices | MOSFET Drivers |
|
Use Scenario: Power path management in portable medical monitors or handheld test equipment using Li-ion batteries. IC Role / Device Role / Timing Role: Reverse-polarity protection and enable switch in main power rail; placed between battery and system input. Use Value: −1 A continuous rating handles peak loads; low VCEsat preserves battery runtime during extended operation. |
Use Scenario: Level-shifting driver stage for N-channel MOSFETs in half-bridge motor drivers for HVAC actuators. IC Role / Device Role / Timing Role: PNP pull-up stage providing fast gate turn-off for high-side N-MOSFETs in bootstrap circuits. Use Value: Dual collector terminals ensure low-inductance switching; 145 MHz fT supports >100 kHz PWM frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium power transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCX51-16,115 | SOT89 package (3-pin), lower Ptot = 0.50 W on standard FR4, same −45 V/−1 A ratings and hFE bin. | Smaller footprint but reduced thermal margin; suitable where board space is constrained and power < 0.5 W. | Select when PCB real estate is limited and thermal mass is insufficient for SOT223 mounting. |
| BC51PA,115 | SOT1061 (HUSON3) package, 2×2×0.65 mm, Ptot = 0.42 W standard FR4, same voltage/current ratings and hFE bin. | Ultra-thin profile for space-constrained portable devices; requires 4-layer PCB for optimal thermal performance. | Choose for ultra-low-profile designs where height < 0.7 mm is mandatory and power dissipation is ≤ 400 mW. |
Compared with BCX51-16,115 and BC51PA,115, the BCP51-16,135 offers superior thermal performance via SOT223's dual-collector pad and highest standard-board power handling (0.65 W), making it optimal for automotive linear regulators and high-reliability high-side switches where thermal margin is critical.
Availability
BCP51-16,135 is available at Aetrix Electronics and suitable for automotive body electronics, industrial linear power supplies, and battery management systems requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for BCP51-16,135 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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BCP51 series belongs to Nexperia's medium-power bipolar transistor product line, designed specifically for robust, thermally efficient switching and linear regulation in automotive and industrial power management applications.
FAQ
What is the maximum allowable junction temperature for BCP51-16,135?
The absolute maximum junction temperature (Tj) is 150 °C, as specified in the limiting values table. Operation above this temperature risks permanent device degradation. Derating is required above 25 °C ambient - for example, at 85 °C ambient, maximum usable power drops to ~0.35 W based on the 192 K/W Rth(j-a).
How does the dual-collector configuration (pins 2 and 4) affect PCB layout?
Pins 2 and 4 are internally connected to the same collector node and must be soldered to a shared, thermally robust copper pour. This pad should be ≥1 cm² for 1.00 W operation or ≥6 cm² for 1.35 W; thermal vias to inner ground/power planes are recommended to enhance heat transfer and reduce Rth(j-a).
Is BCP51-16,135 suitable for pulse-width modulation (PWM) switching?
Yes - with fT = 145 MHz and low VCEsat, it supports PWM frequencies up to several hundred kHz. However, due to its bipolar nature, base drive must be actively pulled low during OFF state to ensure fast turn-off; a base-emitter resistor (e.g., 1 kΩ) is recommended to prevent leakage-induced conduction.
What marking code identifies BCP51-16,135 on the device body?
The top-side marking is "BCP51/16", as confirmed in Table 5 of the datasheet. This distinguishes it from other hFE bins (e.g., "BCP51/10" for selection -10) and confirms both the base part number and gain grade.
BCP51-16,135 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:
- PNP
- 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:
- 100 @ 150mA, 2V
- Power - Max:
- 1 W
- Frequency - Transition:
- 145MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP51-16,135 FAQ
1.How can I place an order for BCP51-16,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP51-16,135 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 BCP51-16,135 reliable?
The price and inventory of BCP51-16,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP51-16,135 is usually 5 days.
3.What payment methods are accepted for BCP51-16,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP51-16,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP51-16,135?
BCP51-16,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP51-16,135 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 BCP51-16,135?
For technical support, including BCP51-16,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP51-16,135 requirements.
6.How does Aetrix verify that BCP51-16,135 is sourced from the original manufacturer or authorized distributors?
All BCP51-16,135 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 BCP51-16,135 meets industry standards.
7.What is the process for return or replacement of BCP51-16,135?
All BCP51-16,135 units undergo pre-shipment inspection (PSI). If there is an issue with BCP51-16,135, 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 BCP51-16,135 part is unused and in its original packaging.
Return procedure for BCP51-16,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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