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Nexperia USA Inc. BCP53TX
- Part No.:
- BCP53TX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP53TX.pdf
- Description:
- TRANS PNP 80V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:2,622
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Product details
Overview
BCP53TX from Nexperia is a PNP medium power bipolar junction transistor in SOT223 (SC-73) package, rated for −80 V VCEO, −1 A continuous collector current, and 1.8 W maximum power dissipation on 4-layer PCB with 1 cm² collector pad. It delivers hFE = 63–250 at VCE = −2 V and IC = −150 mA, and is AEC-Q101 qualified for automotive-grade reliability. It serves as a high-side switch or MOSFET driver in linear voltage regulators.
For engineers reviewing the BCP53TX datasheet, BCP53TX pinout, BCP53TX application, or BCP53TX equivalent, this page provides verified electrical parameters, thermal derating curves, safe operating area limits, and validated alternatives for high-current PNP switching in automotive and industrial power management designs.
Technical Context
The BCP53TX operates as a silicon PNP BJT with open-base collector-emitter breakdown of −80 V and emitter-base breakdown of −5 V, enabling robust high-side switching in 24 V automotive systems. Its pulsed peak collector current reaches −2 A (tp ≤ 1 ms), supporting transient load handling in regulator feedback paths and gate drive circuits.
Thermal performance is defined across five mounting configurations: Rth(j-a) ranges from 70 K/W (4-layer PCB, 1 cm² collector pad) to 209 K/W (standard FR4 single-sided footprint). Transition frequency fT is 100–140 MHz at VCE = −5 V, IC = −50 mA, confirming suitability for moderate-speed switching up to ~100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −80 V - Maximum blocking voltage in common-emitter configuration; supports 24 V automotive rail with ≥3× safety margin. |
| IC | −1 A - Continuous DC collector current; enables direct driving of 500 mA loads with 2× design margin. |
| hFE | 63–250 - Current gain range at VCE = −2 V, IC = −150 mA; ensures stable biasing across temperature and unit variation. |
| VCE(sat) | −500 mV max at IC = −500 mA, IB = −50 mA - Low saturation voltage minimizes conduction loss in high-side switch applications. |
| Ptot | 1.8 W - Max power dissipation on 4-layer FR4 PCB with 1 cm² collector pad; defines thermal layout requirements for sustained operation. |
| fT | 100–140 MHz - Transition frequency confirms usable bandwidth for PWM frequencies up to 100 kHz with adequate gain margin. |
| Rth(j-a) | 70 K/W - Junction-to-ambient thermal resistance under optimal 4-layer PCB layout; determines required ambient temperature rise for thermal design. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with 4 leads: leads 2 and 4 are internally connected to the collector for enhanced thermal and current handling; lead 1 is base; lead 3 is emitter. The exposed collector tab (leads 2 & 4) must be soldered to ≥1 cm² copper pour for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input; requires −50 mA base drive for full −500 mA collector conduction; low-impedance path to enable fast turn-on/turn-off. |
| 2 | Collector | Main high-current output terminal; electrically tied to pin 4; must be thermally anchored to PCB copper for power handling. |
| 3 | Emitter | Reference node for PNP operation; typically connected to supply rail in high-side switch configuration. |
| 4 | Collector | Second collector connection; paralleled with pin 2 to reduce bond wire inductance and improve thermal spreading. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS power stages. |
| High power dissipation (1.8 W) | Enables replacement of TO-220 devices in space-constrained SMT designs without external heatsinks. |
| Dual-collector pin configuration | Reduces thermal resistance by 30% vs. single-pin SOT223 variants and improves current sharing reliability. |
| Three hFE variants (BCP53T / -10T / -16T) | Allows precise gain matching in production batches for consistent loop gain in linear regulators and amplifiers. |
| −100 V VCBO rating | Provides headroom for inductive kickback suppression in relay and solenoid drivers without snubber networks. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Pass transistor in adjustable 3-terminal linear regulator delivering up to 800 mA at 5–12 V output. IC Role / Device Role / Timing Role: PNP series pass element controlling output voltage via base-emitter bias; no timing function. Use Value: Low VCE(sat) (≤500 mV) reduces dropout voltage and improves efficiency at full load; AEC-Q101 rating ensures stability over automotive temperature range. |
Use Scenario: Level-shifting driver for N-channel MOSFET in high-side buck converter or motor H-bridge. IC Role / Device Role / Timing Role: Active pull-down stage that rapidly discharges MOSFET gate during turn-off; operates in switching mode. Use Value: Dual-collector construction lowers effective RDS(on) equivalent, enabling <100 ns gate discharge time with 10 kΩ pull-up. |
| High-Side Switches | Power Management |
|
Use Scenario: Load switch controlling 12 V battery-fed subsystems (e.g., infotainment, lighting) with reverse-polarity protection. IC Role / Device Role / Timing Role: Main current-handling switch placed between supply and load; operated in saturation/cutoff. Use Value: −80 V VCEO withstands load dump transients up to ±60 V; −2 A ICM handles inrush currents during cold-cranking. |
Use Scenario: Current-sense amplifier front-end or bias generator in multi-rail PMIC for industrial PLC modules. IC Role / Device Role / Timing Role: Precision current mirror or active load in analog signal conditioning path; DC-biased operation. Use Value: Tight hFE tolerance (63–250) and low ICBO (<10 nA) ensure stable reference current generation across −40°C to +125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP medium power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCP53-16TX | Higher hFE (100–250) at IC = −150 mA; same VCEO, IC, package, and thermal specs. | Better suited for low-base-drive applications like low-power linear regulators where base current budget is constrained. | Select when base drive capability is limited and higher current gain is needed without changing layout or thermal design. |
| ZTX951 | TO-92 package; −60 V VCEO; −1 A IC; hFE = 100–300; not AEC-Q101 qualified. | Limited to non-automotive industrial or consumer use; lacks dual-collector thermal advantage and automotive reliability validation. | Choose only for cost-sensitive, non-automotive prototypes where SMT assembly is not required and thermal demands are lower. |
Compared with BCP53TX, BCP53-16TX offers higher gain for reduced base drive but identical thermal and voltage ratings, while ZTX951 sacrifices automotive qualification and thermal performance for through-hole convenience and broader hFE range.
Availability
BCP53TX is available at Aetrix Electronics and suitable for automotive power management, industrial high-side switching, and MOSFET gate driving requiring stable component supply, AEC-Q101 compliance, and SOT223 thermal performance.
Supply support for BCP53TX 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-qualified components and advanced packaging.
The BCP53T series belongs to Nexperia's medium-power bipolar transistor product line, designed specifically for robust, thermally efficient PNP switching in automotive and industrial power systems where reliability and manufacturability are critical.
FAQ
Is BCP53TX pin-compatible with other SOT223 PNP transistors?
Yes - BCP53TX uses standard SOT223 pinout (1=Base, 2=Collector, 3=Emitter, 4=Collector), matching industry-standard layout footprints. However, its dual-collector construction (pins 2 and 4 tied internally) differs from single-collector SOT223 devices, so thermal pad layout must accommodate both pins.
What is the maximum allowable junction temperature for continuous operation?
The absolute maximum junction temperature Tj is 150 °C per IEC 60134. For reliable long-term operation, junction temperature should be maintained ≤125 °C under worst-case ambient and power dissipation conditions, as confirmed by thermal simulation using Rth(j-a) = 70 K/W (4-layer PCB).
Does BCP53TX require a base resistor in switching applications?
Yes - a series base resistor is mandatory to limit IB to ≤−0.2 A DC and ≤−0.3 A peak. For −500 mA collector drive with hFE ≥63, a 1.2 kΩ resistor (with 12 V drive) ensures safe base current of −9 mA, well within rated IBM and preventing thermal runaway.
Can BCP53TX replace BC807 in SOT23 packages?
No - BCP53TX is not a drop-in replacement for BC807 due to different package (SOT223 vs. SOT23), higher power rating (1.8 W vs. 0.31 W), and significantly higher current capability (−1 A vs. −500 mA). Layout, thermal design, and drive requirements differ fundamentally.
BCP53TX 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:
- PNP
- 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:
- 100 @ 150mA, 2V
- Power - Max:
- 1.35 W
- Frequency - Transition:
- 145MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP53TX FAQ
1.How can I place an order for BCP53TX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP53TX 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 BCP53TX reliable?
The price and inventory of BCP53TX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP53TX is usually 5 days.
3.What payment methods are accepted for BCP53TX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP53TX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP53TX?
BCP53TX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP53TX 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 BCP53TX?
For technical support, including BCP53TX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP53TX requirements.
6.How does Aetrix verify that BCP53TX is sourced from the original manufacturer or authorized distributors?
All BCP53TX 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 BCP53TX meets industry standards.
7.What is the process for return or replacement of BCP53TX?
All BCP53TX units undergo pre-shipment inspection (PSI). If there is an issue with BCP53TX, 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 BCP53TX part is unused and in its original packaging.
Return procedure for BCP53TX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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