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Nexperia USA Inc. BCP51-10TF
- Part No.:
- BCP51-10TF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP51-10TF.pdf
- Description:
- TRANS PNP 45V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
BCP51-10TF from Nexperia is a PNP medium power bipolar junction transistor in SOT223 (SC-73) package, rated for −45 V VCEO, −1 A continuous collector current, and 100–160 hFE at VCE = −2 V and IC = −150 mA. It serves as a high-side switch or MOSFET driver in automotive-grade linear voltage regulators and power management circuits.
For engineers reviewing the BCP51-10TF datasheet, BCP51-10TF pinout, BCP51-10TF application, or BCP51-10TF equivalent, this device is selected for its AEC-Q101 qualification, thermal robustness on FR4 PCBs, defined safe operating area up to 2 A peak, and stable DC current gain across −55 °C to +150 °C ambient.
Technical Context
This PNP transistor operates with open-base collector-emitter breakdown of −45 V and emitter-base breakdown of −5 V, supporting reliable switching in high-side configurations where base drive is referenced to ground. Its pulsed peak collector current reaches −2 A (tp ≤ 1 ms), enabling short-duration load control without thermal runaway.
The device delivers −500 mV VCE(sat) at IC = −500 mA / IB = −50 mA and exhibits 100–140 MHz fT at VCE = −5 V / IC = −50 mA, confirming suitability for medium-speed switching and analog amplification in industrial power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum allowable collector-emitter voltage with base open; defines safe blocking capability in high-side switch applications. |
| IC (continuous) | −1 A - Continuous DC collector current rating; supports sustained load switching in 12 V/24 V automotive power rails. |
| hFE | 100–160 - DC current gain at VCE = −2 V, IC = −150 mA; enables predictable base drive sizing for stable saturation. |
| VCE(sat) | −500 mV - Collector-emitter saturation voltage at IC = −500 mA / IB = −50 mA; limits conduction loss to ≤0.25 W per switch event. |
| fT | 100–140 MHz - Transition frequency at VCE = −5 V, IC = −50 mA; supports switching above 10 MHz in feedback-controlled regulators. |
| Ptot (4-layer PCB) | 1.8 W - Total power dissipation on 4-layer FR4 with 1 cm² collector pad; enables compact thermal design without external heatsink. |
| Rth(j-a) | 70 K/W - Junction-to-ambient thermal resistance under optimized 4-layer PCB mounting; ensures Tj stays below 150 °C at full load. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with 4 leads: lead 1 = Base, lead 2 = Collector, lead 3 = Emitter, lead 4 = Collector (dual-collector configuration for enhanced thermal and current handling).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input terminal; requires negative current injection relative to emitter to turn on PNP device. |
| 2 | Collector | Main high-current output node; electrically and thermally connected to large copper pad for heat spreading. |
| 3 | Emitter | Reference terminal tied to system ground or positive rail; sets bias reference for base drive network. |
| 4 | Collector | Second collector connection-internally bonded to pin 2-to reduce current density and improve thermal path to PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive temperature range (−40 °C to +150 °C) and mechanical stress; eliminates requalification for Tier-1 power modules. |
| Dual-collector SOT223 package | Leads 2 and 4 both connect to collector, lowering effective thermal resistance and enabling 1.8 W dissipation on 4-layer PCB. |
| Three hFE variants | BCP51-10T offers 100–160 hFE, balancing gain stability and switching speed for precision current mirror or regulator error amplifiers. |
| High peak current capability | −2 A single-pulse rating (tp ≤ 1 ms) supports inrush current limiting and fault-tolerant power sequencing. |
| Low VCE(sat) | −500 mV at IC/IB = 10 ensures <1% voltage drop in 5 V logic-level driven high-side switches. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDOs delivering 3.3 V/1 A from 12 V automotive supply. IC Role / Device Role / Timing Role: PNP pass element controlling output voltage via feedback loop; operates in linear region with constant base current. Use Value: Stable −500 mV VCE(sat) minimizes dropout voltage and thermal load during full-load operation. |
Use Scenario: Level-shifting gate driver for N-channel high-side MOSFET in BLDC motor half-bridge. IC Role / Device Role / Timing Role: Active pull-down stage sinking gate charge during turn-off; complements NPN driver in complementary pair. Use Value: Dual-collector thermal path sustains −2 A peak current pulses without derating at 10 kHz PWM frequencies. |
| High-Side Switches | Power Management |
|
Use Scenario: Load switch enabling/disabling 24 V subsystems (e.g., infotainment display backlight) in commercial vehicles. IC Role / Device Role / Timing Role: Main current-handling switch controlled by microcontroller GPIO through base resistor network. Use Value: −45 V VCEO withstands load-dump transients up to ISO 7637-2 Pulse 5a, eliminating need for external TVS. |
Use Scenario: Current-sense amplifier front-end in battery protection IC for 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: Precision current mirror transistor matching sense FET characteristics across temperature. Use Value: Tight hFE bin (100–160) ensures <±3% current ratio drift from −40 °C to +125 °C. |
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 |
|---|---|---|---|
| BCP52-10TF | Same SOT223 package, but NPN complement with +45 V VCEO, +1 A IC, and identical hFE bin (100–160); not electrically interchangeable. | Used in low-side switching or complementary push-pull stages-not direct replacement in high-side topology. | Select only when circuit requires NPN polarity and matched gain binning for differential pairs. |
| ZTX951 | TO-92 package, −60 V VCEO, −1 A IC, hFE = 100–300; higher voltage rating but lower thermal performance (Rth(j-a) ≈ 200 K/W). | Suitable for prototyping or low-volume boards where manual assembly is acceptable; lacks AEC-Q101 qualification. | Choose only for non-automotive designs requiring higher VCEO margin and no thermal constraints. |
Compared with BCP52-10TF and ZTX951, BCP51-10TF uniquely combines AEC-Q101 qualification, dual-collector thermal enhancement, and tightly binned hFE in surface-mount format-making it the sole option for production automotive high-side switches needing reliability, manufacturability, and thermal headroom.
Availability
BCP51-10TF is available at Aetrix Electronics and suitable for automotive power management, industrial linear regulators, and high-reliability MOSFET driver circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BCP51-10TF 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 consumer markets.
The BCP51T series belongs to Nexperia's AEC-Q101-qualified medium-power transistor product line, engineered specifically for robust high-side switching and power regulation in harsh automotive environments.
FAQ
What is the maximum allowable junction temperature for BCP51-10TF?
The absolute maximum junction temperature is 150 °C, as specified in Table 6 of the datasheet. Operation at this limit requires strict thermal management-such as using a 4-layer PCB with ≥1 cm² collector copper area-to maintain Rth(j-a) ≤ 70 K/W and avoid permanent degradation.
Does BCP51-10TF support pulse-width modulation (PWM) switching?
Yes-its −2 A peak collector current rating (tp ≤ 1 ms) and 100–140 MHz fT support PWM operation up to ~10 MHz in linear or saturated switching modes. Safe operating area curves (Fig. 2) confirm stable performance at 10–100 kHz frequencies with appropriate base drive and thermal layout.
How does the dual-collector configuration affect PCB layout?
Pins 2 and 4 are internally connected to the collector and must be soldered to the same large copper pour. This doubles current-carrying capacity and improves heat conduction-requiring a minimum 1 cm² exposed copper area connected to both pins via thermal vias for optimal 1.8 W dissipation.
Is BCP51-10TF compatible with lead-free reflow soldering processes?
Yes-the SOT223 package is qualified for standard lead-free reflow profiles (J-STD-020). Figure 19 specifies the recommended reflow footprint, including 4× 1.2 mm solder lands and 3.85 mm × 3.6 mm occupied area, ensuring reliable wetting and mechanical integrity at peak temperatures up to 260 °C.
BCP51-10TF 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:
- 63 @ 150mA, 2V
- Power - Max:
- 1.3 W
- Frequency - Transition:
- 140MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP51-10TF FAQ
1.How can I place an order for BCP51-10TF through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP51-10TF 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 BCP51-10TF reliable?
The price and inventory of BCP51-10TF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP51-10TF is usually 5 days.
3.What payment methods are accepted for BCP51-10TF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP51-10TF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP51-10TF?
BCP51-10TF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP51-10TF 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 BCP51-10TF?
For technical support, including BCP51-10TF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP51-10TF requirements.
6.How does Aetrix verify that BCP51-10TF is sourced from the original manufacturer or authorized distributors?
All BCP51-10TF 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 BCP51-10TF meets industry standards.
7.What is the process for return or replacement of BCP51-10TF?
All BCP51-10TF units undergo pre-shipment inspection (PSI). If there is an issue with BCP51-10TF, 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 BCP51-10TF part is unused and in its original packaging.
Return procedure for BCP51-10TF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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