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Nexperia USA Inc. BCX54-16,115
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- Part No.:
- BCX54-16,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX54-16,115.pdf
- Description:
- TRANS NPN 45V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:3,917
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Product details
Overview
BCX54-16,115 from Nexperia is an NPN medium power transistor in SOT89 (SC-62) package, rated for 45 V VCEO, 1 A continuous collector current, and DC current gain (hFE) of 100–250 at VCE = 2 V and IC = 150 mA; used in linear voltage regulators and low-side switching circuits requiring robust thermal performance on FR4 PCBs.
For engineers reviewing the BCX54-16,115 datasheet, BCX54-16,115 pinout, BCX54-16,115 application, or BCX54-16,115 equivalent, this device is selected for medium-power amplification and switching where precise hFE binning (100–250), 2 A peak pulse capability, and exposed die pad thermal management are critical design requirements.
Technical Context
This transistor operates as a single-element NPN bipolar junction device with fixed emitter-base-collector terminal assignment and no integrated biasing or protection circuitry. Its hFE binning (BCX54-16) ensures predictable current amplification across production lots under 150 mA operating conditions.
Thermal behavior is defined by three mounting configurations: standard SOT89 footprint (Rth(j-a) = 250 K/W), 1 cm² collector pad (132 K/W), and 6 cm² pad (93 K/W). Saturation voltage remains ≤0.5 V at IC = 500 mA and IB = 50 mA, supporting efficient low-side switch operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown; defines upper rail limit in linear regulator or switch applications. |
| IC (continuous) | 1 A - Continuous DC collector current rating; sets maximum steady-state load drive capability. |
| hFE (VCE = 2 V, IC = 150 mA) | 100–250 - Guaranteed DC current gain range for BCX54-16 bin; enables stable bias network design without gain margin overdesign. |
| Ptot (6 cm² pad) | 1.35 W - Maximum dissipation with optimized PCB copper area; determines thermal headroom in compact power stages. |
| fT | 100–180 MHz - Transition frequency at VCE = 5 V, IC = 50 mA; supports audio-frequency amplification and fast-switching control loops. |
| VBE (IC = 500 mA) | ≤1 V - Base-emitter forward voltage; informs base drive voltage and current requirements for saturation. |
| Cc | 6 pF - Collector capacitance at VCB = 10 V; impacts high-frequency stability and switching speed in amplifier or driver stages. |
Pinout & Package
SOT89 (SC-62) surface-mount plastic package with exposed die pad for enhanced thermal conduction to PCB; 3-pin flat-lead outline measuring 4.6 mm × 2.6 mm × 1.8 mm (L × W × H), designed for reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter (E) | Current sink node; connected to ground or low-side reference in switch configurations; requires low-impedance return path for stable operation. |
| 2 | Collector (C) | Current source node; tied to load or supply rail; electrically and thermally coupled to exposed pad for heat dissipation. |
| 3 | Base (B) | Control input; driven with current-limited signal to set IC; sensitive to ESD and requires series resistance in digital drive applications. |
Key Features
| Feature | Design Value |
|---|---|
| Three hFE gain bins | BCX54-16 provides 100–250 hFE at 150 mA, enabling consistent bias point selection across production without recalibration. |
| Exposed collector pad | Integral thermal path from die to PCB reduces Rth(j-a) to 93 K/W with 6 cm² copper area, improving reliability in sustained 1 A operation. |
| 2 A peak collector current | Single-pulse ICM = 2 A (tp ≤ 1 ms) supports surge handling in motor drivers or inrush-limited power supplies. |
| Low VCE(sat) | ≤0.5 V at IC/IB = 10 ensures <1.5% conduction loss at 500 mA, minimizing self-heating in linear regulator pass elements. |
| FR4-compatible footprint | Standardized SOT89 land pattern (Fig. 10) enables drop-in placement on common PCB fabrication processes without custom stencil design. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable 3-terminal linear regulator delivering up to 1 A output current with <1 % line regulation. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via base bias; operates in active region with continuous conduction. Use Value: 45 V VCEO allows ≥36 V input headroom; 1.35 W Ptot with 6 cm² pad sustains full-load thermal dissipation without derating. |
Use Scenario: Level-shifting driver stage translating 3.3 V logic signals to gate-drive MOSFETs in half-bridge power converters. IC Role / Device Role / Timing Role: Low-side NPN switch sinking gate charge during turn-off; operates in saturation with fast recovery. Use Value: 2 A ICM handles transient gate discharge currents; fT > 100 MHz ensures sub-10 ns switching transitions. |
| Low-Side Switches | Battery-Powered Devices |
|
Use Scenario: Load switch controlling 12 V solenoids or relays in industrial control panels with microcontroller GPIO interface. IC Role / Device Role / Timing Role: Digital on/off switch with base resistor limiting IB; operates in saturation or cutoff states only. Use Value: VBE ≤ 1 V simplifies 3.3 V/5 V logic compatibility; hFE ≥ 100 guarantees <5 mA base drive for 1 A load current. |
Use Scenario: Power management block in portable medical monitors regulating battery-fed analog sensor supplies. IC Role / Device Role / Timing Role: Current amplifier in precision current-source circuit for sensor excitation; biased in active mode. Use Value: Tight hFE bin (100–250) minimizes gain drift across temperature; low ICBO (<10 µA at 150 °C) preserves accuracy in extended-range operation. |
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 and 45 V/1 A ratings, but hFE bin 63–250 (unbinned); lower guaranteed minimum gain at 150 mA. | Acceptable where gain variation is tolerable, e.g., non-critical switching; not suitable for precision current mirrors. | Select when cost sensitivity outweighs hFE consistency requirements and thermal pad layout matches. |
| ZTX653STZ | TO-92 package (not SMT), 60 V VCEO, hFE 100–300, but Ptot = 1 W max; lacks exposed thermal pad. | Only viable for prototyping or low-volume through-hole designs; unsuitable for automated SMT assembly or high-power density layouts. | Choose only if legacy TO-92 footprint is mandated and thermal load remains below 0.75 W. |
Compared with BCX54-16,115, BCP54,115 offers identical packaging and voltage/current specs but sacrifices hFE consistency, while ZTX653STZ trades SMT compatibility and thermal performance for higher VCEO in a through-hole form factor.
Availability
BCX54-16,115 is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, and low-side switches requiring stable component supply, consistent hFE binning, and reliable thermal performance on standard FR4 PCBs.
Supply support for BCX54-16,115 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 specializing in high-performance, high-reliability discrete and logic devices, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The BCX54 series belongs to Nexperia's medium-power bipolar transistor product line, engineered for industrial and consumer power management applications demanding predictable gain, robust thermal behavior, and SMT manufacturability.
FAQ
What is the maximum allowable junction temperature for BCX54-16,115?
The absolute maximum junction temperature (Tj) is 150 °C, as specified in Table 5 of the Nexperia datasheet. Operation above this threshold risks permanent parametric shift or catastrophic failure. Derating curves in Figure 1 confirm that full 1.35 W dissipation is only permissible at Tamb ≤ 25 °C with 6 cm² copper area.
Does BCX54-16,115 support pulsed operation beyond its DC current rating?
Yes - it supports single-pulse peak collector current (ICM) of 2 A for durations ≤1 ms, as defined in Table 1 and Table 5. This capability enables short-duration overload handling in motor drivers or inrush current limiting, provided duty cycle remains ≤0.02 and thermal mass prevents cumulative heating.
How does the SOT89 package's exposed pad affect PCB layout?
The exposed collector pad must be connected to a dedicated copper pour (≥6 cm² recommended) using multiple thermal vias to inner ground or power planes. Per Figure 10, the footprint requires a 4.75 mm × 2.25 mm solder land with solder mask defined openings to ensure mechanical adhesion and thermal transfer - omitting this compromises both Rth(j-a) and long-term solder joint integrity.
Can BCX54-16,115 replace BCX54-10,115 in existing designs?
Yes, with verified gain margin - BCX54-16 offers higher minimum hFE (100 vs. 63) at 150 mA, improving bias stability in active-mode circuits. No layout or electrical changes are needed since both share identical package, pinout, voltage, and current ratings; however, verify base drive sufficiency given the higher gain may reduce required IB.
BCX54-16,115 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:
- 100 @ 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
BCX54-16,115 FAQ
1.How can I place an order for BCX54-16,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX54-16,115 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 BCX54-16,115 reliable?
The price and inventory of BCX54-16,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX54-16,115 is usually 5 days.
3.What payment methods are accepted for BCX54-16,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX54-16,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX54-16,115?
BCX54-16,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX54-16,115 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 BCX54-16,115?
For technical support, including BCX54-16,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX54-16,115 requirements.
6.How does Aetrix verify that BCX54-16,115 is sourced from the original manufacturer or authorized distributors?
All BCX54-16,115 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 BCX54-16,115 meets industry standards.
7.What is the process for return or replacement of BCX54-16,115?
All BCX54-16,115 units undergo pre-shipment inspection (PSI). If there is an issue with BCX54-16,115, 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 BCX54-16,115 part is unused and in its original packaging.
Return procedure for BCX54-16,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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