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Nexperia USA Inc. BCP54,115
- Part No.:
- BCP54,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP54,115.pdf
- Description:
- TRANS NPN 45V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:1,992
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Product details
Overview
BCP54,115 from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT223 (SC-73) package, rated for 45 V VCEO, 1 A continuous collector current, and 1.35 W power dissipation with 6 cm² copper pad. It delivers hFE of 63–250 at IC = 150 mA and supports linear voltage regulation and MOSFET gate driving in automotive body control modules.
For engineers reviewing the BCP54,115 datasheet, BCP54,115 pinout, BCP54,115 application, or BCP54,115 equivalent, this device is selected for low-side switching in 12 V automotive power management where thermal robustness, DC current gain consistency across temperature, and qualified reliability are required.
Technical Context
The BCP54,115 operates as a silicon NPN bipolar junction transistor optimized for medium-power linear and switching applications. Its structure supports stable hFE over −55 °C to 150 °C ambient, with VCE(sat) ≤ 0.5 V at IC = 500 mA / IB = 50 mA and fT = 100–180 MHz for moderate-frequency amplification.
Thermal performance is defined by Rth(j-a) = 93 K/W when mounted on FR4 PCB with 6 cm² collector pad, enabling sustained 1 A operation under controlled board layout. The dual-collector pin (pins 2 & 4) enhances current handling and thermal conduction without requiring external paralleling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage with base open; defines headroom for 12 V/24 V automotive rail switching. |
| IC (continuous) | 1 A - Continuous DC collector current rating; supports load switching up to ~12 W at 12 V with adequate heatsinking. |
| hFE | 63–250 - DC current gain range at VCE = 2 V, IC = 150 mA; enables predictable base drive sizing for saturation in low-side switches. |
| VCE(sat) | ≤ 0.5 V @ IC/IB = 10 - Low saturation voltage minimizes conduction loss and self-heating during active switching. |
| Ptot | 1.35 W @ Tamb ≤ 25 °C with 6 cm² copper pad - Defines maximum steady-state power handling before thermal derating applies. |
| fT | 100–180 MHz - Transition frequency confirms suitability for audio pre-amplification and PWM signal buffering up to ~10 MHz. |
| Rth(j-a) | 93 K/W - Junction-to-ambient thermal resistance with optimized PCB layout; allows ~14.5 °C/W effective rise per watt at full load. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with 4 leads, featuring exposed collector tab for enhanced thermal transfer. Dimensions: 6.7 × 3.7 × 1.8 mm (L × W × H); standardized footprint per Fig. 10 (reflow) and Fig. 11 (wave).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input node; requires current-limited drive (max IB = 0.3 A) to avoid secondary breakdown. |
| 2 | Collector | Main high-current output terminal; electrically and thermally connected to exposed metal tab (pin 4). |
| 3 | Emiter | Reference node for current flow; tied to system ground in low-side switch configurations. |
| 4 | Collector | Second collector connection-bond-wire parallel path to pin 2-reduces effective RDS(on)-like resistance and improves thermal coupling to PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood use per stress test requirements including HTOL, TC, HTRB, and ESD-HBM ≥ 2 kV. |
| Dual-collector construction | Pins 2 and 4 both connect to internal collector region-enables lower thermal impedance and higher pulse current capability (ICM = 2 A). |
| Three hFE variants | BCP54 (63–250), BCP54-10 (63–160), BCP54-16 (100–250)-allows precise gain matching for feedback loops or driver stage linearity. |
| High Ptot with standard SMT footprint | 1.35 W dissipation achievable using only PCB copper area-eliminates need for discrete heatsinks in space-constrained modules. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable 5 V/3.3 V linear regulators powering microcontrollers in automotive ECUs. IC Role / Device Role / Timing Role: NPN series pass element controlling output voltage via base bias from error amplifier. Use Value: Low VCE(sat) reduces dropout voltage; hFE stability ensures consistent regulation across temperature. |
Use Scenario: Gate driver stage for N-channel power MOSFETs in BLDC motor control inverters. IC Role / Device Role / Timing Role: Medium-current buffer amplifying PWM logic signals to deliver >100 mA peak gate charge current. Use Value: Dual-collector layout sustains 2 A pulsed current for fast gate charging; fT supports clean edge fidelity up to 20 kHz. |
| Low-Side Switches | Battery-Driven Devices |
|
Use Scenario: Load switch for headlights, fans, or solenoids in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Saturated NPN switch connecting load between VBAT and GND under MCU GPIO control. Use Value: 1 A continuous rating handles typical 10–15 W loads; AEC-Q101 qualification ensures field reliability. |
Use Scenario: Power path control in portable diagnostic tools powered by Li-ion or lead-acid batteries. IC Role / Device Role / Timing Role: Reverse-polarity and overcurrent protection switch placed between battery and main DC-DC converter. Use Value: VCEO = 45 V accommodates load dump transients; low RCE(sat) preserves battery runtime. |
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 |
|---|---|---|---|
| ZTX653 | Higher VCEO (60 V), lower hFE (20–150), TO-92 package | Lacks AEC-Q101 qualification; unsuitable for automotive; limited thermal performance vs. SOT223 | Select only for non-automotive prototyping or cost-sensitive consumer designs where 45 V margin is sufficient. |
| BCP68 | Same SOT223 package, but PNP complement; VCEO = 45 V, IC = 1 A, hFE = 40–250 | Used in complementary emitter-follower or push-pull stages-not direct functional replacement | Choose only when designing symmetrical output stages or high-side switch topologies requiring PNP polarity. |
Compared with ZTX653 and BCP68, the BCP54,115 uniquely combines AEC-Q101 compliance, dual-collector thermal design, and guaranteed hFE spread in a single SOT223 footprint-making it the preferred choice for production automotive low-side switching where reliability and board-level thermal management are critical.
Availability
BCP54,115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial power supplies, and battery management systems requiring stable component supply with long-term lifecycle assurance.
Supply support for BCP54,115 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 essential efficiency-enhancing components, delivering high-performance diodes, transistors, logic, and MOSFETs for automotive, industrial, and mobile markets.
The BCP54 series belongs to Nexperia's AEC-Q101-qualified bipolar transistor product line, engineered specifically for robust, thermally efficient medium-power switching and linear regulation in harsh automotive environments.
FAQ
What is the maximum allowable base current for continuous operation?
The absolute maximum DC base current (IB) is 0.3 A per datasheet limiting values. For reliable continuous operation, design base drive to maintain IB ≤ 100 mA unless short pulses (<1 ms) are used. Exceeding 0.3 A risks metallization failure or bond wire lift-off, especially at elevated junction temperatures.
Can BCP54,115 be used in parallel for higher current handling?
No-BCP54,115 is not designed for intentional paralleling. Its hFE variation and thermal coupling characteristics do not guarantee current sharing. Instead, leverage its dual-collector pins (2 & 4) and 6 cm² PCB copper pad to achieve 1 A continuous current without external devices.
Is the SOT223 footprint compatible with automated optical inspection (AOI)?
Yes-the SOT223 outline (Fig. 9) and reflow soldering footprint (Fig. 10) meet IPC-7351B Class B standards. The exposed collector pad provides clear contrast for AOI systems, and the 0.6 mm pin pitch allows reliable fiducial-based alignment in high-volume SMT lines.
Does the AEC-Q101 qualification cover all BCP54 variants?
Yes-per Section 11.1, the entire BCP54 series (including BCP54, BCP54-10, and BCP54-16) is qualified to AEC-Q101 Rev. D. Qualification testing was performed on representative lots across all gain bins, confirming reliability for automotive underhood applications up to 150 °C junction temperature.
BCP54,115 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):
- 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:
- 960 mW
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP54,115 FAQ
1.How can I place an order for BCP54,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP54,115 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 BCP54,115 reliable?
The price and inventory of BCP54,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP54,115 is usually 5 days.
3.What payment methods are accepted for BCP54,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP54,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP54,115?
BCP54,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP54,115 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 BCP54,115?
For technical support, including BCP54,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP54,115 requirements.
6.How does Aetrix verify that BCP54,115 is sourced from the original manufacturer or authorized distributors?
All BCP54,115 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 BCP54,115 meets industry standards.
7.What is the process for return or replacement of BCP54,115?
All BCP54,115 units undergo pre-shipment inspection (PSI). If there is an issue with BCP54,115, 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 BCP54,115 part is unused and in its original packaging.
Return procedure for BCP54,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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