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Nexperia USA Inc. BCX55-16,115
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- Part No.:
- BCX55-16,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-243AA
- Datasheet:
-
BCX55-16,115.pdf
- Description:
- TRANS NPN 60V 1A SOT-89
- Quantity:
- Payment:
- Shipping:
Inventory:14,407
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Product details
Overview
BCX55-16,115 from Nexperia is a 60 V, 1 A NPN medium power transistor in SOT89 (SC-62) surface-mount package, optimized for linear voltage regulation and low-side switching with hFE of 100–250 at VCE = 2 V and IC = 150 mA, Ptot up to 1.35 W on 6 cm² copper pad, and exposed die pad for thermal management.
For engineers reviewing the BCX55-16,115 datasheet, BCX55-16,115 pinout, BCX55-16,115 application, or BCX55-16,115 equivalent, this device is selected for high-current gain stability in battery-driven regulators, MOSFET gate drive stages, and thermally constrained linear power stages where junction-to-solder-point thermal resistance of 16 K/W enables reliable operation.
Technical Context
This transistor operates as a single NPN silicon bipolar junction device with fixed emitter-base-collector terminal assignment. Its DC current gain is binned to 100–250 (BCX55-16 grade), specified under pulsed conditions (tp ≤ 300 µs, duty ≤ 0.02) to ensure consistent performance across temperature and current ranges.
It supports continuous collector currents up to 1 A and peak pulses to 2 A, with VCEO = 60 V and VEBO = 5 V - enabling use in 24 V and 48 V industrial power rails. Thermal design relies on the exposed collector pad's direct solder connection to PCB copper for heat transfer, not ambient convection alone.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum safe collector-emitter voltage before breakdown; supports 48 V system rails with 20 % margin. |
| IC | 1 A continuous - Enables direct drive of loads such as LED strings or small solenoids without external buffering. |
| hFE | 100–250 at IC = 150 mA - Tight gain bin ensures predictable base drive requirements in linear regulator feedback paths. |
| VCE(sat) | ≤ 0.5 V at IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes power loss in low-side switch applications. |
| Rth(j-sp) | 16 K/W - Junction-to-solder-point thermal resistance confirms efficient heat transfer via exposed collector pad to PCB copper. |
| fT | 100–180 MHz - Sufficient bandwidth for stable operation in audio amplifiers and fast-switching gate drivers. |
| Ptot | 1.35 W with 6 cm² collector pad - Defines maximum dissipation when using full thermal footprint per JEDEC JESD51-7. |
Pinout & Package
SOT89 (SC-62) plastic surface-mounted package with exposed collector pad for thermal and electrical conduction. Dimensions: 4.6 mm × 2.6 mm × 1.8 mm (L × W × H); lead pitch 1.5 mm; standard reflow footprint per Fig. 10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current return path; connected to ground or low-side reference in common-emitter configurations. |
| 2 | Collector | Main power output node; electrically and thermally tied to exposed pad for heat sinking and low-inductance routing. |
| 3 | Base | Control input; requires current-limited drive (max IB = 0.3 A) to avoid saturation delay or thermal overstress. |
Key Features
| Feature | Design Value |
|---|---|
| Exposed collector pad | Enables direct thermal coupling to PCB copper, reducing Rth(j-a) from 250 K/W (standard footprint) to 93 K/W (6 cm² pad). |
| Three hFE bins | BCX55-16 offers 100–250 gain range - simplifies design iteration by eliminating gain-dependent base resistor recalculations. |
| High peak current capability | 2 A single-pulse rating allows short-duration surge handling in motor start-up or inrush limiting circuits. |
| Low VCE(sat) | ≤ 0.5 V at IC/IB = 10 ensures <100 mW conduction loss at 200 mA load - critical for efficiency in portable battery systems. |
| JEITA-compliant marking | "BM" code enables automated optical inspection and traceability in high-volume SMT assembly lines. |
Applications
| Linear Voltage Regulators | Power Management |
|---|---|
Use Scenario: Pass transistor in adjustable 3-terminal linear regulator delivering 1.2–24 V at up to 800 mA. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via feedback loop; handles full load current and dissipates excess power as heat. Use Value: High hFE bin reduces base drive current burden on error amplifier, while exposed pad maintains Tj < 125 °C at 1 W dissipation. |
Use Scenario: Load switch for 12 V/500 mA auxiliary rail in industrial controller with enable-controlled sequencing. IC Role / Device Role / Timing Role: Low-side switch controlled by microcontroller GPIO; provides ON/OFF control with minimal voltage drop. Use Value: VCE(sat) ≤ 0.5 V limits dropout to < 250 mW at full load, avoiding thermal shutdown during sustained operation. |
| MOSFET Drivers | Battery-Driven Devices |
Use Scenario: Totem-pole stage driving N-channel MOSFET gate in buck converter with 5 V logic-level control. IC Role / Device Role / Timing Role: Fast-switching NPN pull-down element complementing PNP pull-up; handles reverse recovery and Miller charge. Use Value: fT ≥ 100 MHz ensures sub-100 ns turn-off delay, minimizing shoot-through risk in 500 kHz switching converters. |
Use Scenario: Current amplifier in handheld medical monitor powering analog front-end sensors from Li-ion battery (3.0–4.2 V). IC Role / Device Role / Timing Role: Signal-level current booster between op-amp output and sensor bias network; operates in Class-A linear mode. Use Value: Stable hFE over −55 °C to +100 °C prevents gain drift in battery voltage monitoring circuits across environmental 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 |
|---|---|---|---|
| BCP55-16,115 | SOT223 package; higher Ptot = 1.5 W; Rth(j-a) = 70 K/W (vs. 93 K/W for BCX55-16 on same pad size); same hFE bin. | Preferred where board space permits larger footprint and >1.2 W continuous dissipation is required. | Select BCP55-16 when thermal headroom exceeds 0.2 W or when existing layout accommodates SOT223 land pattern. |
| MMBT5551LT1G | SOT23 package; lower IC = 600 mA; VCEO = 160 V; hFE = 80–250; no exposed pad; Rth(j-a) = 300 K/W. | Suitable for high-voltage, low-current signal switching but unsuitable for >500 mA linear regulation due to thermal limits. | Choose MMBT5551LT1G only for HV signal gain stages - not for power switching or regulator pass devices. |
Compared with BCX55-16,115, BCP55-16 offers superior thermal performance in larger packages, while MMBT5551LT1G trades current capacity and thermal robustness for higher voltage rating and smaller footprint - making BCX55-16 the optimal balance of current, gain stability, and thermal manageability in SOT89-constrained designs.
Availability
BCX55-16,115 is available at Aetrix Electronics and suitable for linear voltage regulators, low-side switches, and MOSFET drivers requiring stable component supply, consistent hFE binning, and proven thermal performance in SMT production environments.
Supply support for BCX55-16,115 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 focused on essential semiconductors - high-volume, high-reliability discrete, logic, and MOSFET devices engineered for automotive, industrial, and consumer applications.
The BCX55 series belongs to Nexperia's medium-power bipolar transistor product line, designed specifically for thermally demanding linear and switching power applications where gain consistency, pulse robustness, and PCB-integrated thermal management are critical.
FAQ
What is the maximum continuous collector current for BCX55-16,115?
The absolute maximum continuous collector current (IC) is 1 A, defined under conditions where junction temperature remains ≤ 150 °C. Derating applies above Tamb = 25 °C per Figure 1: at 75 °C ambient, max IC drops to ~0.75 A with 6 cm² copper pad. This rating assumes proper PCB thermal design - not free-air operation.
Can BCX55-16,115 be used in avalanche mode?
No - BCX55-16,115 is not rated or characterized for avalanche energy handling. Its VCEO = 60 V is an absolute maximum rating, not a repetitive avalanche voltage. Operation beyond VCEO risks permanent degradation. For inductive load switching, external clamping (e.g., flyback diode) is mandatory.
How does the exposed pad affect PCB layout requirements?
The exposed collector pad must be soldered to a minimum 1 cm² copper area (recommended 6 cm²) using the footprint in Figure 10. Thermal vias under the pad are not required but improve reliability. The pad is electrically connected to the collector - isolation from other nets is mandatory. Solder mask opening must fully expose the pad surface.
Is BCX55-16,115 suitable for automotive applications?
No - BCX55-16,115 is not AEC-Q101 qualified. The datasheet explicitly states "Non-automotive qualified products" in Section 14. It lacks automotive-grade screening, extended temperature validation (−40 °C to +125 °C), and failure rate documentation required for automotive ECUs or body control modules.
BCX55-16,115 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):
- 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:
- 1.25 W
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BCX55-16,115 FAQ
1.How can I place an order for BCX55-16,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX55-16,115 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 BCX55-16,115 reliable?
The price and inventory of BCX55-16,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX55-16,115 is usually 5 days.
3.What payment methods are accepted for BCX55-16,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX55-16,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX55-16,115?
BCX55-16,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX55-16,115 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 BCX55-16,115?
For technical support, including BCX55-16,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX55-16,115 requirements.
6.How does Aetrix verify that BCX55-16,115 is sourced from the original manufacturer or authorized distributors?
All BCX55-16,115 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 BCX55-16,115 meets industry standards.
7.What is the process for return or replacement of BCX55-16,115?
All BCX55-16,115 units undergo pre-shipment inspection (PSI). If there is an issue with BCX55-16,115, 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 BCX55-16,115 part is unused and in its original packaging.
Return procedure for BCX55-16,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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