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Nexperia USA Inc. BC56PA,115
- Part No.:
- BC56PA,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-PowerUDFN
- Datasheet:
-
BC56PA,115.pdf
- Description:
- TRANS NPN 80V 1A 3HUSON
- Quantity:
- Payment:
- Shipping:
Inventory:6,542
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Product details
Overview
BC56PA,115 from Nexperia is an NPN medium power transistor in a SOT1061 (DFN2020-3) leadless surface-mount package, rated for 80 V VCEO, 1 A continuous collector current, and 2 A peak pulse current. It delivers DC current gain (hFE) of 63–250 at VCE = 2 V and IC = 150 mA, with exposed thermal pad enabling 1.65 W total power dissipation on 4-layer FR4 PCB. It serves as low-side switch and MOSFET driver in battery-powered linear regulators.
For engineers reviewing the BC56PA,115 datasheet, BC56PA,115 pinout, BC56PA,115 application, or BC56PA,115 equivalent, key selection criteria include its 80 V breakdown voltage, thermal resistance of 76 K/W (4-layer PCB, 1 cm² collector pad), 500 mV VCE(sat) at IC = 500 mA / IB = 50 mA, and DFN2020-3 footprint compatibility with space-constrained power management layouts.
Technical Context
This device operates as a general-purpose NPN bipolar junction transistor optimized for medium-power switching and amplification. Its design integrates an exposed copper thermal pad directly connected to the collector terminal, enabling efficient heat transfer to the PCB and supporting stable operation up to 150 °C junction temperature.
The BC56PA,115 features three hFE bins (63–250, 63–160, 100–250) across the BC56PA series, with this variant specified for 63–250 gain at IC = 150 mA. It exhibits 100 MHz minimum fT and 6 pF collector capacitance, confirming suitability for high-speed switching below 100 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in low-side switch designs. |
| IC | 1 A continuous - Sustained collector current capability under Tamb ≤ 25 °C; supports 1 A load switching in regulators and drivers. |
| hFE | 63–250 @ VCE = 2 V, IC = 150 mA - Current gain range enabling predictable base drive sizing for saturation control. |
| VCE(sat) | ≤ 500 mV @ IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss in switching applications. |
| Rth(j-a) | 76 K/W - Thermal resistance with 4-layer FR4 PCB and 1 cm² collector pad; enables ~1.65 W power handling at Tamb = 25 °C. |
| fT | 100–180 MHz - Transition frequency confirming usable bandwidth for fast digital switching and audio amplification. |
| Cc | 6 pF - Collector capacitance at VCB = 10 V; limits high-frequency switching speed and affects gate-drive loading in MOSFET driver use. |
Pinout & Package
SOT1061 (DFN2020-3) is a 2.0 mm × 2.0 mm × 0.65 mm leadless plastic package with an exposed thermal pad electrically connected to the collector terminal and optimized for reflow soldering on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control input node; requires ≥50 mA base current to saturate at 500 mA collector load. |
| 2 | Emitter (E) | Reference node for biasing; internally tied to substrate; must connect to system ground or low-side return path. |
| 3 | Collector (C) | Power output node; electrically bonded to exposed thermal pad for simultaneous electrical conduction and heat sinking. |
Key Features
| Feature | Design Value |
|---|---|
| Exposed collector thermal pad | Enables direct PCB heat spreading; reduces Rth(j-a) to 76 K/W with 4-layer board and 1 cm² pad. |
| Three hFE gain bins | Supports consistent base resistor selection across production lots without recalibration-BC56PA offers 63–250 range. |
| High peak current rating | 2 A single-pulse capability (tp ≤ 1 ms) allows robust surge handling in motor or solenoid drive transients. |
| Low VCE(sat) | 500 mV max ensures <0.25 W conduction loss at 500 mA, critical for thermally constrained battery-driven devices. |
| DFN2020-3 footprint | 2.0 × 2.0 mm body with 0.5 mm pitch terminals enables high-density layout while maintaining manufacturability on standard SMT lines. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDO or emitter-follower regulator delivering up to 1 A load current. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via base bias; operates in linear region with continuous conduction. Use Value: 80 V VCEO supports wide input ranges (e.g., 12–48 V); 1.65 W Ptot enables stable thermal performance without heatsink at moderate loads. |
Use Scenario: Level-shifting and current-boosting stage driving N-channel MOSFET gates in half-bridge or PWM circuits. IC Role / Device Role / Timing Role: Active pull-down switch turning off MOSFET by discharging gate capacitance rapidly. Use Value: 2 A ICM and 500 mV VCE(sat) ensure fast gate discharge with minimal voltage drop, reducing MOSFET switching losses. |
| Low-Side Switches | Battery-Driven Devices |
|
Use Scenario: Load switch controlling 12 V/1 A DC loads (e.g., fans, LEDs, sensors) in industrial control modules. IC Role / Device Role / Timing Role: Saturated NPN switch connecting load to ground; driven by microcontroller GPIO or logic buffer. Use Value: DFN2020-3 package saves board area; 63–250 hFE allows reliable saturation with 5–10 mA base drive across temperature. |
Use Scenario: Power-path control and battery protection circuitry in portable medical monitors or handheld test equipment. IC Role / Device Role / Timing Role: Overcurrent or reverse-polarity protection switch placed between battery and system rail. Use Value: 5 V VEBO withstands reverse-battery conditions; -55 °C to +150 °C operating range supports extended environmental deployment. |
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 |
|---|---|---|---|
| BCP56-10,115 | Same SOT1061 package, but hFE bin 63–160; lower max gain than BC56PA,115's 63–250. | Less base drive margin required; suitable where tighter hFE tolerance simplifies bias network design. | Select when gain consistency matters more than maximum drive capability. |
| BCX56-16,115 | Same package and VCEO/IC ratings, but hFE 100–250 at IC = 150 mA; higher min gain improves low-current switching reliability. | Better performance in low-IC gate-drive or sensor interface roles where base current is limited. | Choose for applications requiring guaranteed ≥100 hFE at light loads, such as microcontroller-driven switches. |
Compared with BC56PA,115, BCP56-10,115 offers tighter hFE control at lower gain, while BCX56-16,115 guarantees higher minimum gain-both retain identical thermal, voltage, and footprint specs, enabling drop-in substitution where gain profile aligns with circuit requirements.
Availability
BC56PA,115 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in high-volume industrial and consumer electronics production.
Supply support for BC56PA,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 discrete and logic devices, with leadership in automotive, industrial, and mobile applications.
The BC56PA,115 belongs to Nexperia's medium-power bipolar transistor family, engineered for space-efficient, thermally robust switching and amplification in cost-sensitive power management systems.
FAQ
What is the maximum allowable junction temperature for BC56PA,115?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in the Absolute Maximum Ratings table. Operation beyond this limit risks permanent degradation of hFE, VCE(sat), and leakage parameters. Derating is required above 25 °C ambient per Figure 1's power curves.
Does BC56PA,115 require a heatsink in typical applications?
No external heatsink is required when mounted on a 4-layer FR4 PCB with ≥1 cm² copper pad connected to the exposed collector pad, as Rth(j-a) drops to 76 K/W-supporting 1.65 W dissipation at 25 °C ambient. Single-layer boards need larger pads or forced airflow above ~0.42 W.
How does the exposed thermal pad affect PCB layout?
The thermal pad is electrically connected to the collector (Pin 3), so the corresponding PCB land must be routed to the collector net-not ground. Use the footprint in Figure 12: 1.05 mm × 1.05 mm central pad with two 0.5 mm × 0.25 mm side solder dams to prevent bridging during reflow.
Is BC56PA,115 qualified for automotive applications?
No. Per Revision History section 13 and Legal Information section "Non-automotive qualified products", BC56PA,115 is explicitly marked non-automotive. For automotive use, Nexperia recommends the -Q qualified variants (e.g., BC56PA-Q, if available) which undergo AEC-Q101 stress testing and PPAP documentation.
BC56PA,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-PowerUDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 80 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:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-HUSON (2x2)
BC56PA,115 FAQ
1.How can I place an order for BC56PA,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC56PA,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 BC56PA,115 reliable?
The price and inventory of BC56PA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC56PA,115 is usually 5 days.
3.What payment methods are accepted for BC56PA,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC56PA,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC56PA,115?
BC56PA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC56PA,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 BC56PA,115?
For technical support, including BC56PA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC56PA,115 requirements.
6.How does Aetrix verify that BC56PA,115 is sourced from the original manufacturer or authorized distributors?
All BC56PA,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 BC56PA,115 meets industry standards.
7.What is the process for return or replacement of BC56PA,115?
All BC56PA,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC56PA,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 BC56PA,115 part is unused and in its original packaging.
Return procedure for BC56PA,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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