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Nexperia USA Inc. BCP56/ZLX
- Part No.:
- BCP56/ZLX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP56/ZLX.pdf
- Description:
- TRANS NPN 80V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:2,558
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Product details
Overview
BCP56/ZLX from Nexperia is an NPN medium power transistor in SOT223 (SC-73) package, rated for 80 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 regulators and MOSFET drivers requiring stable gain and thermal performance.
For engineers reviewing the BCP56/ZLX datasheet, BCP56/ZLX pinout, BCP56/ZLX application, or BCP56/ZLX equivalent, this page provides verified pin functions, real-world thermal derating curves, validated alternative transistors with hFE and Ptot differences, and application-specific use value for low-side switching and battery-driven amplifiers.
Technical Context
This device operates as a general-purpose NPN bipolar junction transistor optimized for medium-power linear and switching applications. Its dual-collector pin configuration (pins 2 and 4) enables enhanced thermal conduction via PCB copper area, and its pulsed ICM rating of 2 A supports short-duration load switching.
The BCP56/ZLX exhibits fT = 100–180 MHz and Cc = 6 pF, confirming suitability for audio-frequency amplification and moderate-speed switching. VCEsat ≤ 500 mV at IC = 500 mA / IB = 50 mA ensures low conduction loss in power management stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Supports rail voltages up to 60 V in linear regulators and 48 V industrial power rails without breakdown. |
| IC (continuous) | 1 A - Enables direct drive of small solenoids, LED strings, or gate capacitance of logic-level MOSFETs. |
| Ptot (6 cm² pad) | 1.35 W - Delivers usable power handling on standard FR4 PCBs with extended copper heatsinking. |
| hFE range | 63–250 - Provides predictable DC gain across production lots for stable biasing in amplifier feedback networks. |
| fT | 100–180 MHz - Ensures adequate bandwidth for audio preamplifiers and PWM signal buffering up to ~10 MHz. |
| Rth(j-a) (6 cm²) | 93 K/W - Limits junction temperature rise to ≤93 °C above ambient at full 1.35 W dissipation. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with 4 leads; pins 2 and 4 are internally connected collectors, enabling dual-path heat transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input; requires ≥50 mA base drive for full 1 A saturation in low-side switch configurations. |
| 2 | Collector | Main high-current output path; electrically tied to pin 4 for parallel thermal conduction. |
| 3 | Emiter | Reference node for emitter-follower or grounded-emitter topologies; connects to system ground or load return. |
| 4 | Collector | Secondary collector terminal; must be soldered to ≥1 cm² copper area to achieve rated Ptot. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-collector thermal design | Enables 1.35 W dissipation on FR4 PCB with 6 cm² collector pad-35% higher than standard SOT223 variants. |
| Three hFE variants | BCP56 (63–250), BCP56-10 (63–160), BCP56-16 (100–250)-supports precise gain matching in production amplifier batches. |
| High VCBO | 100 V - Allows safe operation with inductive kickback in relay drivers and motor control snubber circuits. |
| Low VCEsat | ≤500 mV at IC/IB = 10 - Reduces conduction loss and self-heating in battery-powered low-side switches. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
Use Scenario: Pass transistor in adjustable 3-terminal linear regulator delivering 12 V/500 mA from 24 V input. IC Role / Device Role / Timing Role: NPN pass element controlling output voltage via base bias from error amplifier. Use Value: 80 V VCEO accommodates 24 V input with margin; 1.35 W Ptot sustains 6 W dropout power at 500 mA without forced cooling. |
Use Scenario: Level-shifting driver stage for N-channel MOSFET gate in 24 V industrial motor controller. IC Role / Device Role / Timing Role: Low-side switch pulling gate to ground during turn-off; handles 1 A peak gate discharge current. Use Value: Dual-collector layout lowers Rth(j-a) to 93 K/W, preventing thermal runaway during 10 kHz PWM switching with 50% duty cycle. |
| Low-Side Switches | Battery-Driven Devices |
Use Scenario: Load switch enabling/disabling 5 V rail to sensor module in portable instrumentation. IC Role / Device Role / Timing Role: Saturated NPN switch connecting VCC to load; controlled by microcontroller GPIO. Use Value: VCEsat ≤ 500 mV ensures <100 mW conduction loss at 200 mA, extending Li-ion battery life by >3% per cycle. |
Use Scenario: Audio preamplifier stage in handheld medical ultrasound probe powered by 3.7 V Li-Po cell. IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with fixed bias network and emitter degeneration. Use Value: fT ≥ 100 MHz supports 2 MHz ultrasound carrier amplification; hFE stability over -20 °C to +60 °C ensures consistent gain across operating temperature. |
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 |
|---|---|---|---|
| BCP56-10 | hFE = 63–160 (lower max gain); identical VCEO, IC, Ptot, and pinout | Preferred where tighter hFE tolerance reduces variation in analog amplifier DC operating point | Select when circuit gain stability outweighs need for maximum current gain |
| ZTX653 | VCEO = 60 V (20 V lower); hFE = 100–300; Ptot = 1.0 W on same footprint | Acceptable only in ≤48 V systems with reduced thermal margin; not suitable for 80 V transient protection | Use only if input voltage never exceeds 45 V and board layout allows 0.35 W lower dissipation |
Compared with BCP56/ZLX, BCP56-10 offers tighter hFE spread for analog consistency but sacrifices peak gain, while ZTX653 trades 20 V breakdown margin and 0.35 W thermal headroom for higher nominal hFE-making BCP56/ZLX optimal for 48–60 V industrial power rails demanding both voltage margin and thermal robustness.
Availability
BCP56/ZLX 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 proven thermal performance on FR4 PCBs.
Supply support for BCP56/ZLX 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 discrete and logic devices, with leadership in automotive, industrial, and mobile applications.
The BCP56 series belongs to Nexperia's medium-power bipolar transistor product line, engineered for robust performance in power management, switching, and amplification circuits where thermal efficiency and gain consistency are critical.
FAQ
What is the maximum allowable junction temperature for BCP56/ZLX?
The absolute maximum junction temperature (Tj) is 150 °C per IEC 60134 limiting values. Operation above this threshold causes irreversible degradation. Derating begins at Tamb > 25 °C: Ptot decreases linearly to zero at 150 °C ambient when using the 6 cm² copper pad configuration.
Can BCP56/ZLX replace BC337 in existing designs?
No-BC337 uses TO-92 package (0.5 W Ptot, 45 V VCEO), while BCP56/ZLX is SOT223 with 80 V rating and 1.35 W capability. Direct replacement requires PCB footprint redesign, thermal pad layout, and verification of hFE impact on bias stability due to different gain ranges.
Is BCP56/ZLX qualified for automotive applications?
No-this variant is non-automotive qualified per Revision History v.11. Nexperia explicitly states it is not tested to AEC-Q101 standards. For automotive use, select the BCP56-Q series, which undergoes extended temperature cycling, humidity testing, and failure analysis per automotive requirements.
How does the dual-collector configuration affect PCB layout?
Pins 2 and 4 must both be connected to the same large copper pour (≥1 cm² minimum, 6 cm² recommended) to achieve specified thermal resistance. Splitting them across separate nets or small traces increases Rth(j-a) beyond 125 K/W, reducing safe operating power by >40% and risking thermal runaway under sustained load.
BCP56/ZLX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1 A
- Voltage - Collector Emitter Breakdown (Max):
- 80 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:
- 1.35 W
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP56/ZLX FAQ
1.How can I place an order for BCP56/ZLX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP56/ZLX 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 BCP56/ZLX reliable?
The price and inventory of BCP56/ZLX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP56/ZLX is usually 5 days.
3.What payment methods are accepted for BCP56/ZLX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP56/ZLX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP56/ZLX?
BCP56/ZLX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP56/ZLX 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 BCP56/ZLX?
For technical support, including BCP56/ZLX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP56/ZLX requirements.
6.How does Aetrix verify that BCP56/ZLX is sourced from the original manufacturer or authorized distributors?
All BCP56/ZLX 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 BCP56/ZLX meets industry standards.
7.What is the process for return or replacement of BCP56/ZLX?
All BCP56/ZLX units undergo pre-shipment inspection (PSI). If there is an issue with BCP56/ZLX, 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 BCP56/ZLX part is unused and in its original packaging.
Return procedure for BCP56/ZLX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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