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Nexperia USA Inc. BCP51-16-QF
- Part No.:
- BCP51-16-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP51-16-QF.pdf
- Description:
- TRANS PNP 45V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:3,900
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Product details
Overview
BCP51-16-QF 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 100–250 DC current gain (hFE) at VCE = −2 V and IC = −150 mA. It serves as a high-side switch or linear regulator pass element in automotive power management systems.
For engineers reviewing the BCP51-16-QF datasheet, BCP51-16-QF pinout, BCP51-16-QF application, or BCP51-16-QF equivalent, this device is selected for robust thermal performance on FR4 PCBs, AEC-Q101 qualification, and precise hFE binning-critical for stable biasing in battery-driven and MOSFET driver circuits.
Technical Context
This PNP transistor operates with open-base collector-emitter breakdown voltage of −45 V and emitter-base breakdown of −5 V, supporting reliable operation in negative-rail switching and regulation topologies. Its pulsed peak collector current rating of −2 A enables short-duration load switching without thermal runaway.
Thermal resistance from junction to ambient ranges from 93 K/W (6 cm² copper pad) to 192 K/W (standard footprint), directly linking PCB layout decisions to safe operating area. The 145 MHz transition frequency (fT) confirms suitability for low-to-moderate-speed switching and analog amplification up to ~10 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in high-side switch designs. |
| IC (continuous) | −1 A - Continuous DC collector current; sets maximum steady-state load drive capability in linear regulators. |
| hFE | 100–250 at VCE = −2 V, IC = −150 mA - Tight gain bin ensures predictable base drive requirements in production circuits. |
| Ptot (max) | 1.35 W with 6 cm² copper pad - Enables higher power dissipation than standard SOT223 footprints, reducing need for heatsinks. |
| fT | 145 MHz - Supports fast switching transitions and audio-frequency amplification without gain roll-off. |
| VCE(sat) | −0.5 V at IC = −500 mA, IB = −50 mA - Low saturation voltage minimizes conduction loss in switching applications. |
| Rth(j-a) | 93 K/W (6 cm² pad) - Quantifies thermal bottleneck; informs minimum copper area needed for 150 °C max junction temperature. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with 4 leads, 2.3 mm pitch, and 6.5 mm × 3.5 mm × 1.65 mm body dimensions. The exposed collector tab (pins 2 and 4) provides enhanced thermal conduction to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node; requires current-limited drive to achieve target hFE-based collector current. |
| 2 | Collector | Main power output terminal; electrically and thermally connected to exposed metal tab for heat sinking. |
| 3 | Emiter | Reference/return node for PNP operation; connects to positive supply rail in high-side switch configurations. |
| 4 | Collector | Second collector connection-internally tied to pin 2-to improve current sharing and thermal spreading across PCB pad. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| Three hFE bins | BCP51-16-QF's 100–250 range enables consistent bias design across production batches without recalibration. |
| Enhanced thermal pad | Double-collector-pin configuration (pins 2 & 4) increases solderable copper area, lowering Rth(j-a) by up to 52% vs. standard SOT223. |
| High peak current | −2 A single-pulse rating supports inrush current handling in battery protection and motor drive precharge circuits. |
| Low VBE | −1 V at IC = −500 mA - Reduces base drive power and eases compatibility with 3.3 V / 5 V logic-level controllers. |
Applications
| Linear Voltage Regulators | High-Side Switches |
|---|---|
|
Use Scenario: Adjustable LDO or series pass element in 12 V automotive subsystems (e.g., infotainment power rails). IC Role / Device Role / Timing Role: PNP pass transistor regulating output voltage via feedback-controlled base current. Use Value: −45 V VCEO accommodates load-dump transients; tight hFE bin ensures stable dropout and line regulation. |
Use Scenario: Power enable control for ECU submodules (e.g., CAN transceiver power domain). IC Role / Device Role / Timing Role: High-side switch isolating downstream circuitry from battery during sleep mode. Use Value: −1 A continuous rating handles typical module loads; AEC-Q101 qualification guarantees reliability over 15-year vehicle life. |
| Battery-Driven Devices | MOSFET Drivers |
|
Use Scenario: Reverse-polarity protection and main power switch in portable diagnostic tools powered by 12 V lead-acid batteries. IC Role / Device Role / Timing Role: PNP switch placed between battery and system ground to block reverse current and control power-on sequencing. Use Value: −5 V VEBO withstands battery float charging; low VCE(sat) minimizes voltage drop and extends runtime. |
Use Scenario: Level-shifting gate driver for N-channel high-side MOSFETs in BLDC motor control half-bridges. IC Role / Device Role / Timing Role: Active pull-up stage providing fast turn-on current to MOSFET gate while sinking turn-off current. Use Value: 145 MHz fT enables <100 ns switching transitions; dual collector pins reduce gate drive loop inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium-power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCP52-16-Q | +45 V VCEO, same hFE bin, but NPN polarity | Requires inverted control logic and complementary circuit topology | Select only when NPN configuration aligns with existing driver architecture or thermal layout constraints favor NPN placement. |
| ZTX951 | −60 V VCEO, −1.5 A IC, TO-92 package, no AEC-Q101 qualification | Larger footprint, no automotive qualification, higher VCE(sat) (−0.7 V) | Acceptable for industrial prototypes or non-automotive cost-sensitive designs where extended voltage margin is required. |
Compared with BCP52-16-Q and ZTX951, the BCP51-16-QF uniquely combines AEC-Q101 compliance, SOT223 thermal efficiency, and tightly binned hFE-making it the preferred choice for volume automotive power stages where reliability, board space, and production consistency are critical.
Availability
BCP51-16-QF is available at Aetrix Electronics and suitable for automotive power management, battery protection circuits, and MOSFET driver stages requiring stable component supply across multi-year production cycles.
Supply support for BCP51-16-QF 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, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BCP51-Q series belongs to Nexperia's AEC-Q101-qualified medium-power transistor portfolio, engineered specifically for robust operation in automotive power control, linear regulation, and interface driver applications.
FAQ
What is the maximum allowable junction temperature for BCP51-16-QF?
The absolute maximum junction temperature is 150 °C, as defined in the limiting values table. Operation above this threshold risks permanent degradation of hFE and increased leakage currents. Derating curves in Figure 1 confirm that full 1.35 W power dissipation is only permissible with a 6 cm² copper pad at Tamb ≤ 25 °C.
Does BCP51-16-QF support pulse-width modulation (PWM) switching?
Yes-its −2 A peak collector current rating (tp ≤ 1 ms), 145 MHz fT, and −0.5 V VCE(sat) make it suitable for PWM duty cycles up to 50% at frequencies below 100 kHz. Thermal impedance data (Fig. 2–4) shows junction-to-ambient response remains stable for pulse durations ≥100 μs with appropriate PCB copper area.
How does the dual-collector pin configuration affect PCB layout?
Pins 2 and 4 are internally connected to the same collector node and share the exposed metal tab. Layout must join both pins to a single, uninterrupted copper pour ≥6 cm² for optimal thermal performance. Splitting or isolating either pin degrades Rth(j-a) and risks localized overheating under sustained load.
Is BCP51-16-QF compatible with lead-free reflow soldering processes?
Yes-the device is qualified for standard JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C. Figure 10 specifies the recommended reflow solder land pattern for SC-73, with 1.2 mm × 1.2 mm pads for pins 1 and 3, and a 4.6 mm × 2.3 mm thermal pad for pins 2 and 4.
BCP51-16-QF 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:
- 650 mW
- Frequency - Transition:
- 145MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP51-16-QF FAQ
1.How can I place an order for BCP51-16-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP51-16-QF 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-QF reliable?
The price and inventory of BCP51-16-QF 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-QF is usually 5 days.
3.What payment methods are accepted for BCP51-16-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP51-16-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP51-16-QF?
BCP51-16-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP51-16-QF 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-QF?
For technical support, including BCP51-16-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP51-16-QF requirements.
6.How does Aetrix verify that BCP51-16-QF is sourced from the original manufacturer or authorized distributors?
All BCP51-16-QF 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-QF meets industry standards.
7.What is the process for return or replacement of BCP51-16-QF?
All BCP51-16-QF units undergo pre-shipment inspection (PSI). If there is an issue with BCP51-16-QF, 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-QF part is unused and in its original packaging.
Return procedure for BCP51-16-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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