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Nexperia USA Inc. BC51-16PA,115
- Part No.:
- BC51-16PA,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-PowerUDFN
- Datasheet:
-
BC51-16PA,115.pdf
- Description:
- TRANS PNP 45V 1A 3HUSON
- Quantity:
- Payment:
- Shipping:
Inventory:5,294
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Product details
Overview
BC51-16PA,115 from Nexperia is a PNP medium power transistor in SOT1061 (HUSON3) package, rated for −45 V VCEO, −1 A continuous collector current, and AEC-Q101 qualified for automotive use. It delivers hFE = 100–250 at VCE = −2 V and IC = −150 mA (hFE selection -16), with exposed thermal pad enabling 1.10 W power dissipation on 6 cm² FR4 copper. It serves as high-side switch or MOSFET driver in battery-powered power management systems.
For engineers reviewing the BC51-16PA,115 datasheet, BC51-16PA,115 pinout, BC51-16PA,115 application, or BC51-16PA,115 equivalent, key selection factors include its AEC-Q101 qualification, SOT1061 thermal-enhanced ultra-thin footprint (2.0 × 2.0 × 0.65 mm), −45 V breakdown rating, hFE binning consistency, and junction-to-solder-point thermal resistance of 20 K/W.
Technical Context
This device operates as a linear PNP bipolar junction transistor with fixed emitter-base and collector-emitter polarity, designed for DC switching and analog amplification in medium-power circuits. Its SOT1061 package integrates an exposed collector terminal acting as both electrical connection and thermal heatsink, supporting stable operation up to Tj = 150 °C.
The transistor exhibits specified DC current gain (hFE) across three factory-binned selections (−10, −16, −25), with BC51-16PA,115 corresponding to the 100–250 range at −150 mA. Saturation voltage is guaranteed ≤ −0.5 V at IC = −500 mA / IB = −50 mA, and transition frequency fT reaches 145 MHz under VCE = −5 V / IC = −50 mA conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum safe collector-emitter voltage with base open; defines high-side switch blocking capability in 36 V automotive systems. |
| IC (continuous) | −1 A - Continuous DC collector current rating; supports load switching up to ~12 W at 12 V with adequate heatsinking. |
| hFE (−16 bin) | 100–250 at VCE = −2 V, IC = −150 mA - Tight DC gain spread enables predictable base drive sizing in linear regulators and drivers. |
| Ptot (max) | 1.10 W on 6 cm² FR4 copper - Thermal performance enabled by SOT1061's exposed collector pad; exceeds SOT223/SOT89 variants under same PCB conditions. |
| Rth(j-sp) | 20 K/W - Junction-to-solder-point thermal resistance; critical for estimating temperature rise when mounted on standard PCB land patterns. |
| fT | 145 MHz - Transition frequency at VCE = −5 V, IC = −50 mA; supports moderate-speed switching in PWM gate driving applications. |
| AEC-Q101 | Qualified - Meets stress test requirements for discrete semiconductors in automotive environments, including temperature cycling and HTRB. |
Pinout & Package
SOT1061 (HUSON3) is a leadless, ultra-thin 3-terminal surface-mount package measuring 2.0 × 2.0 × 0.65 mm, featuring an exposed collector pad on the bottom for enhanced thermal and electrical conduction. The package has no leads; terminals are soldered directly to PCB pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node; requires current-limited drive to achieve target IC; reverse-biased during saturation to minimize storage time. |
| 2 | Emiter | Reference terminal for PNP operation; connected to higher potential rail (e.g., battery +); establishes current flow direction into collector. |
| 3 | Collector | Main output/power terminal; electrically and thermally tied to exposed bottom pad; must be routed to large copper area for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood and body-control applications per stress test requirements including HTSL, TC, and HTRB. |
| Three hFE selections | Bin codes −10 (63–160), −16 (100–250), and −25 enable precise gain matching across production batches for stable loop gain in regulators. |
| SOT1061 thermal enhancement | Exposed collector pad reduces Rth(j-sp) to 20 K/W and enables 1.10 W dissipation-26% higher than BCX51 in SOT89 under identical 6 cm² copper conditions. |
| Ultra-thin profile | 0.65 mm max height allows integration in space-constrained modules such as smart sensors and compact battery management units. |
| High VCEO / IC ratio | −45 V / −1 A rating supports 24–48 V industrial and commercial power rails while maintaining single-device simplicity over Darlington solutions. |
Applications
| Linear Voltage Regulators | High-Side Switches |
|---|---|
|
Use Scenario: Adjustable LDO pre-regulator stage in automotive infotainment power tree, supplying 5 V/1 A to MCU subsystems from 12 V battery. IC Role / Device Role / Timing Role: PNP pass transistor operating in linear mode; emitter tied to input rail, collector to output, base driven by error amplifier. Use Value: −45 V VCEO provides 3× headroom over nominal 12 V battery; hFE binning ensures consistent dropout and thermal behavior across production. |
Use Scenario: Load disconnect switch controlling 12 V power to telematics module during vehicle sleep mode. IC Role / Device Role / Timing Role: High-side PNP switch with base driven via resistor network or logic-level shifter; collector grounded, emitter to load. Use Value: Low VCE(sat) (≤ −0.5 V @ −500 mA) minimizes standby power loss; AEC-Q101 ensures reliability over 15-year automotive lifecycle. |
| Battery-Driven Devices | MOSFET Drivers |
|
Use Scenario: Power path control in portable medical monitor with dual Li-ion cells (8.4 V max), requiring reverse-polarity and overcurrent protection. IC Role / Device Role / Timing Role: PNP configured as reverse-voltage protection switch upstream of buck converter; emitter to battery+, collector to system rail. Use Value: −5 V VEBO rating prevents damage during hot-swap events; SOT1061's low profile fits within 1.0 mm board stackup constraints. |
Use Scenario: Level-shifting driver stage for N-channel high-side MOSFET in 24 V BLDC motor controller half-bridge. IC Role / Device Role / Timing Role: PNP current source/sink providing fast turn-on/turn-off gate charge to MOSFET gate through low-impedance path. Use Value: 145 MHz fT supports clean 20–50 kHz PWM edge transitions; exposed collector pad maintains <110 °C junction temp at 1 A pulsed gate drive. |
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; lower Ptot (1.35 W max on 6 cm² copper); Rth(j-sp) = 16 K/W; same hFE bin and VCEO/IC ratings. | Less suitable for ultra-thin designs; better suited for legacy layouts with larger keep-out zones and manual rework access. | Select when existing SOT89 footprint reuse is prioritized over thermal density or board thickness. |
| BCP51-16,115 | SOT223 package; higher Ptot (1.35 W on 6 cm² copper); Rth(j-sp) = 16 K/W; includes 4th collector lead for enhanced thermal routing. | Preferred for high-reliability industrial power supplies where mechanical robustness and thermal margin outweigh size constraints. | Choose when >1.35 W dissipation or IPC-compliant thermal vias under 4-lead collector are required. |
Compared with BCX51-16,115 and BCP51-16,115, BC51-16PA,115 offers the smallest footprint and lowest profile but trades off absolute power handling for space efficiency-making it optimal for next-gen automotive ECUs and wearable power modules where Z-height and thermal interface design are tightly coupled.
Availability
BC51-16PA,115 is available at Aetrix Electronics and suitable for automotive power management, battery-driven portable electronics, and high-side switching applications requiring stable component supply, AEC-Q101 compliance, and ultra-thin packaging.
Supply support for BC51-16PA,115 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 discretes, logic, and MOSFETs-with manufacturing rooted in process technology and automotive-grade quality systems.
BC51-16PA,115 belongs to Nexperia's AEC-Q101-qualified PNP medium power transistor family, engineered specifically for space-constrained automotive and industrial power control applications demanding thermal efficiency and long-term stability.
FAQ
What is the meaning of "PA" in BC51-16PA,115?
The "PA" suffix denotes the SOT1061 (HUSON3) package variant-distinct from BC51-16 (SOT223) and BCX51-16 (SOT89). This marking aligns with Nexperia's ordering code system where "PA" identifies the thermal-enhanced ultra-thin outline, confirmed in Table 4 and Table 5 of the datasheet.
Does BC51-16PA,115 support wave soldering?
No. Nexperia explicitly states in Section 11 that reflow soldering is the only recommended method for SOT1061. Wave soldering is not supported due to the leadless construction and thermal pad geometry, which risks insufficient wetting and void formation under the exposed collector.
How does the hFE selection affect base drive design?
The −16 bin guarantees hFE ≥100 at IC = −150 mA, allowing base current to be sized between −0.6 mA (for IC = −150 mA) and −1.5 mA (for IC = −1 A with 10× design margin). This tight spread eliminates need for gain-compensation circuitry in precision current sources.
Is the exposed collector pad electrically isolated?
No-the exposed collector pad in SOT1061 is electrically connected to terminal 3 (collector) and must be soldered to a PCB copper pour tied to the collector net. It serves dual thermal and electrical functions; isolation would compromise both power handling and signal integrity.
BC51-16PA,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-PowerUDFN
- 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:
- 420 mW
- Frequency - Transition:
- 145MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-HUSON (2x2)
BC51-16PA,115 FAQ
1.How can I place an order for BC51-16PA,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC51-16PA,115 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 BC51-16PA,115 reliable?
The price and inventory of BC51-16PA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC51-16PA,115 is usually 5 days.
3.What payment methods are accepted for BC51-16PA,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC51-16PA,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC51-16PA,115?
BC51-16PA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC51-16PA,115 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 BC51-16PA,115?
For technical support, including BC51-16PA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC51-16PA,115 requirements.
6.How does Aetrix verify that BC51-16PA,115 is sourced from the original manufacturer or authorized distributors?
All BC51-16PA,115 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 BC51-16PA,115 meets industry standards.
7.What is the process for return or replacement of BC51-16PA,115?
All BC51-16PA,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC51-16PA,115, 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 BC51-16PA,115 part is unused and in its original packaging.
Return procedure for BC51-16PA,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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