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Nexperia USA Inc. BC55-16PA,115
- Part No.:
- BC55-16PA,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-PowerUDFN
- Datasheet:
-
BC55-16PA,115.pdf
- Description:
- TRANS NPN 60V 1A 3HUSON
- Quantity:
- Payment:
- Shipping:
Inventory:97,748
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Product details
Overview
BC55-16PA from Nexperia is an AEC-Q101 qualified NPN medium power transistor in SOT1061 leadless surface-mount package, rated for 60 V VCEO, 1 A continuous collector current, and 100–250 hFE at VCE = 2 V / IC = 150 mA; used as low-side switch or MOSFET driver in automotive power management modules.
For engineers reviewing the BC55-16PA datasheet, BC55-16PA pinout, BC55-16PA application, or BC55-16PA equivalent, this page delivers verified thermal resistance (Rth(j-sp) = 20 K/W), pulsed current capability (ICM = 2 A), exposed die pad thermal performance, and AEC-Q101 qualification status - all critical for automotive-grade linear regulator and battery-driven device designs.
Technical Context
This transistor operates as a medium-power NPN switching and amplification device with base-controlled current gain, optimized for stable DC and pulsed operation up to 150 °C junction temperature. Its SOT1061 package integrates an exposed collector pad for direct thermal coupling to PCB copper, enabling high power dissipation (up to 1.65 W on 4-layer FR4 with 1 cm² collector pad).
The BC55-16PA features a minimum hFE of 100 at 150 mA/2 V, supporting reliable saturation in low-side switch configurations with IB/IC = 10, and exhibits VCE(sat) ≤ 0.5 V under those conditions - essential for minimizing conduction loss in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum safe collector-emitter voltage with open base; defines maximum supply rail compatibility in linear regulators and switch-mode drivers. |
| IC (continuous) | 1 A - Continuous DC collector current rating; supports sustained load switching in automotive body control modules. |
| hFE | 100–250 at VCE = 2 V, IC = 150 mA - Guaranteed DC current gain range ensures predictable base drive sizing for MOSFET gate driving. |
| VCE(sat) | ≤ 0.5 V at IC = 500 mA, IB = 50 mA - Low saturation voltage reduces power loss and self-heating during active switching. |
| Rth(j-sp) | 20 K/W - Junction-to-solder-point thermal resistance; enables accurate thermal modeling when mounted on standard FR4 with exposed pad reflow. |
| Ptot (max) | 1.65 W on 4-layer FR4 with 1 cm² collector pad - Highest power dissipation configuration supports compact, high-density automotive PCB layouts. |
| fT | 100–180 MHz - Transition frequency confirms suitability for audio-frequency amplification and fast-switching applications up to ~10 MHz. |
Pinout & Package
SOT1061 is an ultra-thin, leadless 3-pin surface-mount package with an exposed collector die pad for enhanced thermal and electrical conductivity. The package measures 2.1 × 1.9 × 0.65 mm and requires reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; accepts low-current input to modulate collector current; requires current-limiting resistor in series for bias stability. |
| 2 | Emitter (E) | Reference terminal; connected to ground or low-side return path; forms common-emitter configuration with collector output. |
| 3 | Collector (C) | Power output terminal; electrically and thermally tied to exposed die pad; must be routed to large copper area for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, lighting, and body electronics per stress test requirements. |
| Exposed collector pad | Enables direct thermal coupling to PCB copper, reducing Rth(j-a) to 76 K/W (4-layer FR4) and improving long-term reliability under thermal cycling. |
| Three hFE variants | BC55-16PA (100–250) offers higher gain than BC55-10PA (63–160), simplifying base drive design in low-power MOSFET driver stages. |
| High peak current capability | ICM = 2 A (tp ≤ 1 ms) supports surge handling in motor startup circuits and transient load switching without secondary protection. |
| Low VBE (≤ 1 V) | Reduces base drive power requirement and eases compatibility with 3.3 V and 5 V microcontroller GPIO outputs. |
Applications
| Linear Voltage Regulators | Power Management |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDOs delivering 1–3 A to infotainment subsystems. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via emitter-follower configuration with feedback loop compensation. Use Value: VCEO = 60 V and Ptot = 1.65 W enable regulation from 12 V/24 V automotive rails with minimal dropout and thermal margin. |
Use Scenario: Load switch for auxiliary power domains in ADAS ECUs requiring controlled turn-on/turn-off sequencing. IC Role / Device Role / Timing Role: Low-side switch enabling/disabling downstream 5 V or 3.3 V rails using MCU GPIO control. Use Value: hFE ≥ 100 ensures full saturation with ≤ 15 mA base drive, minimizing MCU port loading and timing uncertainty. |
| MOSFET Drivers | Battery-Driven Devices |
|
Use Scenario: Gate driver stage for N-channel power MOSFETs in BLDC motor controllers for HVAC actuators. IC Role / Device Role / Timing Role: Current amplifier boosting microcontroller PWM signal to deliver >100 mA peak gate charge current. Use Value: fT ≥ 100 MHz and VCE(sat) ≤ 0.5 V support clean 20 kHz PWM edge transitions with <100 ns rise/fall times. |
Use Scenario: On/off control of LED arrays and sensors in portable diagnostic tools powered by Li-ion batteries. IC Role / Device Role / Timing Role: Discrete switching element replacing integrated load switches where cost, thermal, or voltage headroom constraints apply. Use Value: AEC-Q101 qualification and -55 °C to +150 °C operating range ensure robustness across battery discharge cycles and ambient temperature extremes. |
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 |
|---|---|---|---|
| BC54-16PA | NPN complement with identical SOT1061 package, same hFE bin (100–250), but lower VCEO = 45 V and IC = 0.5 A. | Limited to ≤ 45 V supply rails; unsuitable for 60 V automotive transients or 24 V industrial systems with high surge margins. | Select only when supply voltage is strictly ≤ 40 V and thermal budget allows reduced current handling. |
| BC817-40,115 | SOT-23 package, VCEO = 45 V, hFE = 250–630, but Ptot = 0.3 W and no exposed pad - Rth(j-a) ≈ 350 K/W. | Not suitable for >100 mA continuous loads due to thermal limitations; lacks AEC-Q101 qualification. | Use only in non-automotive, low-power signal amplification where space is critical and thermal load is negligible. |
Compared with BC54-16PA and BC817-40,115, the BC55-16PA uniquely combines 60 V rating, 1 A current, AEC-Q101 qualification, and 20 K/W junction-to-pad thermal resistance - making it the only option for thermally constrained, high-reliability automotive low-side switching above 45 V.
Availability
BC55-16PA is available at Aetrix Electronics and suitable for automotive body control modules, battery management systems, and industrial linear regulators requiring stable component supply with AEC-Q101 compliance and thermal robustness.
Supply support for BC55-16PA 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 advanced packaging.
The BC55PA series belongs to Nexperia's AEC-Q101-qualified medium-power transistor product line, engineered specifically for automotive power management, linear regulation, and robust switching in harsh environments.
FAQ
Is BC55-16PA pin-compatible with BC55-10PA or BC55PA?
Yes - all BC55PA-series variants share identical SOT1061 package and pinout (B-E-C). The only difference is hFE binning: BC55-16PA guarantees 100–250, BC55-10PA is 63–160, and BC55PA is 63–250. No layout change is needed when upgrading gain grade.
What is the maximum allowable PCB copper area for the exposed collector pad?
The datasheet specifies optimal thermal performance with 1 cm² or 6 cm² collector pad areas on single-sided FR4, and no upper limit is defined. Larger pads improve heat spreading, but solder mask clearance and stencil aperture design must follow Nexperia's SOT1061 footprint (Fig. 12), which defines 1.05 × 1.3 mm solder land dimensions.
Does BC55-16PA support pulse-width modulation (PWM) at 20 kHz?
Yes - with fT = 100–180 MHz and VCE(sat) ≤ 0.5 V at IC = 500 mA, the BC55-16PA supports clean 20 kHz PWM switching in MOSFET driver applications. Rise/fall times remain sub-100 ns under typical gate capacitance loads (≤ 2 nF) with proper base drive impedance.
Can BC55-16PA replace BCX56-16 in existing designs?
No - BCX56-16 uses SOT-89 package (TO-243AA) with different pinout (E-B-C), larger footprint, and higher Ptot (1.5 W vs. 1.65 W max). Direct replacement requires PCB redesign. However, electrical parameters (VCEO, hFE, IC) are closely matched for functional evaluation if thermal and layout constraints permit.
BC55-16PA,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-PowerUDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 60 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:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-HUSON (2x2)
BC55-16PA,115 FAQ
1.How can I place an order for BC55-16PA,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC55-16PA,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 BC55-16PA,115 reliable?
The price and inventory of BC55-16PA,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC55-16PA,115 is usually 5 days.
3.What payment methods are accepted for BC55-16PA,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC55-16PA,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC55-16PA,115?
BC55-16PA,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC55-16PA,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 BC55-16PA,115?
For technical support, including BC55-16PA,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC55-16PA,115 requirements.
6.How does Aetrix verify that BC55-16PA,115 is sourced from the original manufacturer or authorized distributors?
All BC55-16PA,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 BC55-16PA,115 meets industry standards.
7.What is the process for return or replacement of BC55-16PA,115?
All BC55-16PA,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC55-16PA,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 BC55-16PA,115 part is unused and in its original packaging.
Return procedure for BC55-16PA,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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