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Nexperia USA Inc. BCX54-10,115
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- Part No.:
- BCX54-10,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX54-10,115.pdf
- Description:
- TRANS NPN 45V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:899
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Product details
Overview
BCX54-10,115 from Nexperia is an NPN medium-power bipolar junction transistor in SOT89 (SC-62) package, rated for 45 V VCEO, 1 A continuous collector current, and 160 hFE at IC = 150 mA / VCE = 2 V. It serves as a low-side switch or MOSFET driver in battery-powered power management circuits requiring robust thermal performance on FR4 PCBs.
For engineers reviewing the BCX54-10,115 datasheet, BCX54-10,115 pinout, BCX54-10,115 application, or BCX54-10,115 equivalent, this device is selected for linear voltage regulation, amplifier stages, and discrete switching where DC current gain consistency, saturation voltage ≤0.5 V at IC/IB = 10, and junction-to-ambient thermal resistance down to 93 K/W (with 6 cm² collector pad) are critical design parameters.
Technical Context
This transistor operates as a single NPN silicon BJT with fixed gain binning (hFE = 63–160), optimized for medium-power linear and switching applications. Its SOT89 package integrates an exposed die pad for enhanced thermal conduction, enabling stable operation up to Tj = 150 °C under pulsed or DC bias.
It features V(BR)CEO = 45 V, V(BR)EBO = 5 V, and fT = 100–180 MHz, supporting high-frequency amplification and fast-switching control loops. Base-emitter voltage remains ≤1 V at IC = 500 mA, ensuring predictable drive requirements in gate-driving configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown; defines upper rail limit in low-side switch designs. |
| IC | 1 A - Continuous DC collector current rating; supports load switching up to ~12 W at 12 V with adequate heatsinking. |
| hFE | 63–160 - DC current gain range at VCE = 2 V, IC = 150 mA; enables precise base current sizing for predictable saturation. |
| VCE(sat) | ≤0.5 V at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes conduction loss in switching applications. |
| Ptot | 1.35 W - Total power dissipation with 6 cm² copper pad; determines thermal margin in compact PCB layouts. |
| fT | 100–180 MHz - Transition frequency confirms suitability for RF amplification and fast digital switching up to ~10 MHz. |
| Rth(j-a) | 93 K/W - Junction-to-ambient thermal resistance with optimized 6 cm² collector pad; guides heatsink-free layout decisions. |
Pinout & Package
SOT89 (SC-62) surface-mount plastic package with exposed collector pad for thermal enhancement; 3-pin flat-lead configuration measuring 4.6 mm × 2.6 mm × 1.8 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter (E) | Current return path; connected to ground or low-side reference in switch configurations. |
| 2 | Collector (C) | Main output terminal; electrically tied to exposed pad for thermal and electrical conduction to PCB copper. |
| 3 | Base (B) | Control input; requires current-limited drive (max IB = 0.3 A) to ensure reliable saturation without overdrive. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE gain bins | BCX54-10 (63–160), BCX54-16 (100–250), standard BCX54 (63–250) - Enables precise current gain matching across production batches. |
| Exposed collector pad | Thermal resistance reduced to 93 K/W with 6 cm² copper area - eliminates need for external heatsinks in <1 W average power designs. |
| High peak current capability | ICM = 2 A (tp ≤ 1 ms) - Supports surge handling in motor start-up or capacitor charging circuits. |
| Low VBE and VCE(sat) | VBE ≤ 1 V, VCE(sat) ≤ 0.5 V - Reduces base drive power and conduction losses in high-duty-cycle switching. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Discrete pass transistor in adjustable LDO or series regulator circuits powering microcontrollers or sensors. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via base bias; operates in linear region with continuous current up to 1 A. Use Value: Stable regulation with minimal dropout (VCE(sat) ≤0.5 V) and thermal stability enabled by SOT89's low Rth(j-a). |
Use Scenario: Driving the gate of N-channel power MOSFETs in DC-DC converters or motor drivers. IC Role / Device Role / Timing Role: Medium-current buffer stage translating logic-level signals into higher-current gate charge pulses. Use Value: Fast turn-on/turn-off supported by fT ≥100 MHz and low VCE(sat), reducing MOSFET switching losses. |
| Low-Side Switches | Battery-Powered Amplifiers |
|
Use Scenario: Controlling LED strings, solenoids, or relay coils in portable equipment powered by Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Ground-referenced switching element activated by MCU GPIO or comparator output. Use Value: Reliable saturation at IC/IB = 10 ensures full load activation even with weak base drive from low-power controllers. |
Use Scenario: Small-signal or power amplification stage in portable audio, sensor signal conditioning, or RF front-ends. IC Role / Device Role / Timing Role: Class-A or Class-AB active device providing voltage/current gain with bandwidth up to 180 MHz. Use Value: High hFE consistency and low noise characteristics support clean amplification in battery-constrained analog chains. |
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 |
|---|---|---|---|
| BCP54,115 | Same SOT89 package, identical VCEO = 45 V and IC = 1 A, but hFE = 63–250 (wider bin); Ptot = 1.5 W with larger pad. | Higher max gain and power dissipation allow looser base drive design and slightly higher ambient temperature operation. | Select when wider hFE tolerance is acceptable and board layout permits 1.5 W thermal budget. |
| ZTX653STZ | SOT89 package, VCEO = 60 V, IC = 1 A, hFE = 100–300, but Rth(j-a) = 125 K/W (standard footprint). | Higher voltage rating suits 24 V industrial systems; lower thermal performance requires careful layout or derating. | Choose for 48 V rail compatibility where gain consistency and thermal headroom are secondary to voltage margin. |
Compared with BCX54-10,115, BCP54,115 offers broader gain range and +0.15 W power margin, while ZTX653STZ trades thermal efficiency for +15 V breakdown headroom-both require revalidation of base drive and thermal layout.
Availability
BCX54-10,115 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply in industrial control, portable instrumentation, and power management modules.
Supply support for BCX54-10,115 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 logic, discretes, and MOSFETs for automotive, industrial, and consumer markets.
The BCX54 series belongs to Nexperia's medium-power bipolar transistor product line, engineered for cost-effective, thermally robust discrete switching and amplification in space-constrained SMT applications.
FAQ
What is the maximum allowable base current for BCX54-10,115?
The absolute maximum DC base current is 0.3 A, and peak base current is also limited to 0.3 A for pulses ≤1 ms. Exceeding this risks metallization failure or bond wire damage. For reliable saturation at IC = 1 A, typical design uses IB = 100 mA (IC/IB = 10), well within safe operating limits.
Can BCX54-10,115 be used in automotive applications?
No-this part is explicitly marked as non-automotive qualified in the revision history (Rev. 10, April 2023). It lacks AEC-Q101 qualification, temperature cycling validation, and automotive-grade screening. For automotive use, Nexperia offers the -Q qualified variants such as BCX54-10Q,115.
How does the SOT89 package affect thermal performance?
The SOT89's exposed collector pad directly interfaces with PCB copper, enabling thermal resistance as low as 93 K/W when using a 6 cm² mounting pad. This is ~30% better than standard SOT23 packages and allows sustained 1 A operation without external heatsinking-provided the PCB layout follows Nexperia's recommended solder land pattern.
Is BCX54-10,115 pin-compatible with BCX55 or BCX56 variants?
Yes-all BCX54/55/56 series devices share identical SOT89 pinout (E-C-B), same mechanical outline, and compatible marking codes. However, BCX55 is PNP and BCX56 has higher VCEO (60 V); electrical substitution requires verification of polarity, voltage rating, and gain requirements.
BCX54-10,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- 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:
- 1.25 W
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BCX54-10,115 FAQ
1.How can I place an order for BCX54-10,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX54-10,115 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 BCX54-10,115 reliable?
The price and inventory of BCX54-10,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX54-10,115 is usually 5 days.
3.What payment methods are accepted for BCX54-10,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX54-10,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX54-10,115?
BCX54-10,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX54-10,115 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 BCX54-10,115?
For technical support, including BCX54-10,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX54-10,115 requirements.
6.How does Aetrix verify that BCX54-10,115 is sourced from the original manufacturer or authorized distributors?
All BCX54-10,115 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 BCX54-10,115 meets industry standards.
7.What is the process for return or replacement of BCX54-10,115?
All BCX54-10,115 units undergo pre-shipment inspection (PSI). If there is an issue with BCX54-10,115, 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 BCX54-10,115 part is unused and in its original packaging.
Return procedure for BCX54-10,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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