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Nexperia USA Inc. BCP55-QF
- Part No.:
- BCP55-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP55-QF.pdf
- Description:
- TRANS NPN 60V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:5,300
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Product details
Overview
BCP55-Q from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT223 (SC-73) package, rated for 60 V VCEO, 1 A continuous collector current, and 1.35 W total power dissipation with 6 cm² copper pad. It delivers hFE = 63–250 at IC = 150 mA and is used in automotive-grade low-side switches and MOSFET drivers.
For engineers reviewing the BCP55-Q datasheet, BCP55-Q pinout, BCP55-Q application, or BCP55-Q equivalent, key selection criteria include its AEC-Q101 qualification, three hFE variants (Q /10 /16), thermal performance on FR4 PCBs, and SOT223 dual-collector pinout enabling high-current routing and heatsinking.
Technical Context
The BCP55-Q operates as a silicon NPN bipolar junction transistor optimized for linear and switching applications up to 60 V. Its dual-collector configuration (pins 2 and 4) reduces thermal resistance and supports higher DC and pulsed current handling (ICM = 2 A, tp ≤ 1 ms).
It features guaranteed hFE bins (63–250 for BCP55-Q), low VCE(sat) ≤ 0.5 V at IC = 500 mA/IB = 50 mA, and fT = 100–180 MHz - enabling use in audio amplifiers and fast-switching power management stages where gain stability across temperature is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum safe collector-emitter voltage under open-base condition; defines maximum supply rail compatibility in linear regulators and switch-mode drivers. |
| IC (continuous) | 1 A - Continuous DC collector current rating; determines usable load current in battery-driven devices and low-side switches without forced cooling. |
| hFE range | 63–250 at VCE = 2 V, IC = 150 mA - Gain bin enables predictable bias design in amplifier and driver circuits without gain compensation networks. |
| Ptot (max) | 1.35 W with 6 cm² copper pad - Power dissipation capability directly tied to PCB layout; enables compact thermal design in space-constrained automotive modules. |
| Rth(j-sp) | 16 K/W - Junction-to-solder-point thermal resistance; quantifies heat transfer efficiency from die to PCB, critical for reliability in sustained 1 A operation. |
| fT | 100–180 MHz - Transition frequency confirms suitability for audio-frequency amplification and sub-MHz switching control loops. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with integrated heatsink tab (pin 4 connected to collector); 4-terminal layout optimized for thermal conduction and current sharing between pins 2 and 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node; requires current-limited drive (IB ≤ 0.3 A peak) to achieve full saturation at IC = 1 A. |
| 2 | Collector | Main high-current output terminal; electrically identical to pin 4; used for primary current path routing and thermal anchoring. |
| 3 | Emiter | Reference/return node; connects to ground or load return; must be low-impedance to maintain gain and switching speed. |
| 4 | Collector | Dual collector terminal; shares current with pin 2 and provides additional thermal conduction path to PCB copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS subsystems per stress test requirements. |
| Three hFE variants | BCP55-Q (63–250), BCP55-10-Q (63–160), BCP55-16-Q (100–250) - Enables precise gain matching across production batches without external feedback tuning. |
| Dual-collector SOT223 | Pins 2 and 4 both connect to collector; reduces effective thermal resistance and increases current-handling margin in PCB layouts with limited copper area. |
| High Ptot scalability | Power dissipation rises from 0.65 W (standard footprint) to 1.35 W (6 cm² pad) - allows designers to trade board area for thermal headroom without changing component. |
Applications
| Linear Voltage Regulators | Power Management |
|---|---|
|
Use Scenario: Pass transistor in adjustable LDOs delivering up to 1 A at 5–24 V output. IC Role / Device Role / Timing Role: NPN series pass element controlling output voltage via base current modulation. Use Value: Low VCE(sat) ≤ 0.5 V minimizes dropout voltage and improves efficiency at full load. |
Use Scenario: Load switch in 12 V automotive subsystems (e.g., infotainment power sequencing). IC Role / Device Role / Timing Role: Medium-power discrete low-side switch enabling controlled power-up/down of downstream rails. Use Value: AEC-Q101 qualification ensures reliability across -40 °C to +125 °C ambient and vibration environments. |
| MOSFET Drivers | Amplifiers |
|
Use Scenario: Gate driver stage for N-channel power MOSFETs in DC-DC converters and motor controllers. IC Role / Device Role / Timing Role: Current-amplifying stage converting logic-level signals into high-current gate charge/discharge pulses. Use Value: fT ≥ 100 MHz supports clean 100 kHz–500 kHz switching edges with minimal propagation delay. |
Use Scenario: Small-signal preamplifier or output stage in automotive audio systems and sensor signal conditioning. IC Role / Device Role / Timing Role: Linear-mode NPN amplifier providing fixed-gain signal boosting with stable hFE over temperature. Use Value: hFE binning (63–250) allows consistent gain calibration across production units without trimming. |
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 |
|---|---|---|---|
| BCP54-Q | PNP complement; same VCEO = 60 V, IC = 1 A, but inverted polarity and lower fT (80 MHz typical). | Used in high-side switching and complementary push-pull amplifier stages where PNP topology is required. | Select when circuit requires PNP functionality or complementary pairing with BCP55-Q in bridge configurations. |
| ZTX653 | Higher VCEO = 100 V, similar hFE range (100–300), but no AEC-Q101 qualification and TO-92 package (higher Rth(j-a)). | Suitable for industrial non-automotive applications requiring higher voltage margin and through-hole assembly. | Choose only for non-automotive designs where 100 V rating is mandatory and AEC-Q101 compliance is not required. |
Compared with BCP54-Q and ZTX653, the BCP55-Q uniquely combines AEC-Q101 qualification, SOT223 thermal performance, and dual-collector architecture - making it the only option among the three qualified for automotive low-side switching with scalable PCB heatsinking.
Availability
BCP55-Q is available at Aetrix Electronics and suitable for automotive power management, linear voltage regulation, and MOSFET driver circuits requiring stable component supply and long-term lifecycle support.
Supply support for BCP55-Q 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 semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
The BCP55-Q belongs to Nexperia's AEC-Q101-qualified medium-power transistor family, engineered specifically for robust, thermally efficient switching and amplification in harsh-environment automotive electronics.
FAQ
What is the maximum allowable base current for continuous operation?
The absolute maximum DC base current is 0.3 A, but for reliable continuous operation at IC = 1 A, the recommended base drive is IB = 100 mA (10× overdrive). Exceeding 0.3 A risks bond wire failure and permanent degradation of hFE due to localized heating at the base contact.
Can BCP55-Q replace BCP55-10-Q in a design without modification?
Yes, BCP55-Q can substitute for BCP55-10-Q because both share identical VCEO, IC, thermal ratings, and pinout - the only difference is hFE range (63–250 vs. 63–160). Circuits designed for the lower-gain variant will operate with higher gain margin, potentially improving noise immunity but requiring verification of saturation depth at minimum hFE.
How does the dual-collector configuration affect PCB layout?
Pins 2 and 4 are internally shorted to the collector, so both must be connected to the same net - typically a large copper pour serving as heatsink. The layout must allocate ≥6 cm² of 2 oz copper connected to both pins to achieve the 1.35 W Ptot rating; splitting or isolating either pin degrades thermal performance and risks thermal runaway.
Is BCP55-Q suitable for Class AB audio output stages?
Yes - its fT ≥ 100 MHz, low VCE(sat), and stable hFE across -55 °C to +150 °C make it viable for low-power Class AB stages. However, it must be paired with appropriate emitter degeneration resistors and thermal monitoring, as its SOA limits require careful derating above 25 °C ambient to avoid secondary breakdown.
BCP55-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:
- 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:
- 63 @ 150mA, 2V
- Power - Max:
- 650 mW
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP55-QF FAQ
1.How can I place an order for BCP55-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP55-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 BCP55-QF reliable?
The price and inventory of BCP55-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP55-QF is usually 5 days.
3.What payment methods are accepted for BCP55-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP55-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP55-QF?
BCP55-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP55-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 BCP55-QF?
For technical support, including BCP55-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP55-QF requirements.
6.How does Aetrix verify that BCP55-QF is sourced from the original manufacturer or authorized distributors?
All BCP55-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 BCP55-QF meets industry standards.
7.What is the process for return or replacement of BCP55-QF?
All BCP55-QF units undergo pre-shipment inspection (PSI). If there is an issue with BCP55-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 BCP55-QF part is unused and in its original packaging.
Return procedure for BCP55-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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