My Inquiry
My Account
Nexperia USA Inc. BCP56TX
- Part No.:
- BCP56TX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP56TX.pdf
- Description:
- TRANS NPN 80V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:824
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BCP56TX from Nexperia is an NPN medium power transistor in SOT223 (SC-73) package, rated for 80 V VCEO, 1 A continuous collector current, and 1.8 W total power dissipation on 4-layer PCB with 1 cm² collector pad. It delivers hFE = 63–250 at IC = 150 mA and supports linear voltage regulators and high-side switch applications.
For engineers reviewing the BCP56TX datasheet, BCP56TX pinout, BCP56TX application, or BCP56TX equivalent, this page provides verified electrical parameters, thermal derating curves, safe operating area limits, and validated alternative transistors for power switching and amplification designs.
Technical Context
This discrete NPN bipolar junction transistor operates in linear and saturated modes with VCE(sat) ≤ 500 mV at IC = 500 mA / IB = 50 mA and fT = 100–155 MHz at VCE = 5 V / IC = 50 mA. Its 150 °C maximum junction temperature and low Rth(j-sp) = 18 K/W support thermally constrained PCB layouts.
Designed for medium-power analog and switching functions, it features dual collector terminals (pins 2 and 4), enabling enhanced thermal conduction via dedicated heatsink pads. Absolute maximum ratings include VCBO = 100 V, VEBO = 5 V, and ICM = 2 A (1 ms pulse), aligning with industrial power management requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in high-side switches. |
| IC | 1 A - Continuous DC collector current rating; supports 12 V/1 A linear regulator output stages. |
| hFE | 63–250 - DC current gain range at VCE = 2 V, IC = 150 mA; enables predictable base drive sizing. |
| Ptot | 1.8 W - Max power dissipation on 4-layer FR4 PCB with 1 cm² collector pad; sets thermal design margin. |
| fT | 100–155 MHz - Transition frequency at VCE = 5 V, IC = 50 mA; supports audio and low-MHz switching. |
| VCE(sat) | ≤ 500 mV - Collector-emitter saturation voltage at IC = 500 mA / IB = 50 mA; minimizes conduction loss in switches. |
| Rth(j-a) | 70 K/W - Junction-to-ambient thermal resistance on optimized 4-layer PCB; informs heatsink requirement. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with integrated heatsink tab (pin 4), 4-terminal layout, and standardized reflow footprint per Figure 19.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input for forward-biased operation; requires current-limited drive to avoid overdrive. |
| 2 | Collector | Main high-current output terminal; electrically connected to pin 4 for thermal and current sharing. |
| 3 | Emitter | Reference node for biasing; connects to ground or load return path in common-emitter configurations. |
| 4 | Collector | Dedicated thermal and current-carrying extension of collector; must be soldered to large copper pour. |
Key Features
| Feature | Design Value |
|---|---|
| Dual collector terminals | Enables simultaneous current handling and thermal conduction through pins 2 and 4 to PCB copper. |
| Three hFE variants | BCP56T (63–250), BCP56-10T (63–160), BCP56-16T (100–250) allow precise gain matching in production. |
| High VCBO = 100 V | Supports operation in 48 V industrial bus systems with margin against transient spikes. |
| Low VBE ≤ 1 V | Reduces base drive power loss and simplifies logic-level interface with microcontrollers. |
| 150 °C Tj(max) | Permits operation in sealed enclosures or high-ambient environments without forced cooling. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
Use Scenario: Pass transistor in adjustable 3–24 V linear regulators delivering up to 1 A output current. IC Role / Device Role / Timing Role: NPN series pass element controlling output voltage via base bias feedback loop. Use Value: Low VCE(sat) and stable hFE ensure <1 % load regulation error across temperature and line variations. | Use Scenario: Gate driver stage for N-channel MOSFETs in 12–48 V DC-DC converters and motor controllers. IC Role / Device Role / Timing Role: Medium-current buffer amplifying MCU GPIO signals to deliver ≥50 mA peak gate charge current. Use Value: Dual-collector construction sustains 2 A pulsed current during fast MOSFET turn-on without thermal runaway. |
| High-Side Switches | Power Amplifiers |
Use Scenario: Load switch for automotive body electronics, industrial sensors, and LED arrays powered from positive rails. IC Role / Device Role / Timing Role: High-side NPN switch with emitter-follower configuration driving resistive or inductive loads. Use Value: 80 V VCEO rating allows direct connection to 24 V/48 V supply rails with safety margin for inductive kickback. | Use Scenario: Class-A/B audio preamplifier or signal amplifier in test equipment and instrumentation front-ends. IC Role / Device Role / Timing Role: Medium-power gain stage operating in linear region with VCE = 5–12 V bias point. Use Value: fT > 100 MHz ensures flat gain response up to 20 kHz with <0.1 % THD at 100 mW output. |
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 |
|---|---|---|---|
| BCP56-16T | Higher minimum hFE (100 vs. 63); identical VCEO, IC, package, and pinout. | Better suited for low-base-drive designs where consistent gain >100 is required across temperature. | Select when base current budget is tight and gain stability above 100 is mandatory. |
| ZTX653 | Same SOT223 package but higher VCEO = 100 V, lower hFE = 40–240, and Ptot = 1.5 W on standard FR4. | Preferred in 48 V telecom supplies where higher breakdown margin outweighs slight power reduction. | Choose when system transients exceed 80 V and additional VCEO headroom is critical. |
Compared with BCP56TX, BCP56-16T offers guaranteed higher DC gain for reduced base drive, while ZTX653 trades 0.3 W power capability for 20 V higher collector-emitter breakdown-enabling safer operation in noisy 48 V industrial environments.
Availability
BCP56TX is available at Aetrix Electronics and suitable for linear voltage regulators, MOSFET drivers, high-side switches, and power amplifiers requiring stable component supply across industrial, embedded, and test equipment programs.
Supply support for BCP56TX 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 efficiency-enhancing components, with leadership in logic, discrete, and MOSFET technologies.
The BCP56TX belongs to Nexperia's medium-power bipolar transistor product line, engineered for robust performance in industrial power management, switching, and analog amplification where reliability and thermal resilience are critical.
FAQ
What is the maximum allowable base current for continuous operation?
The absolute maximum DC base current is 0.2 A per datasheet Table 6. However, for reliable long-term operation, base current should be limited to ≤10 % of collector current (e.g., ≤100 mA at IC = 1 A) to prevent bond wire overheating and hFE degradation. Pulse conditions allow up to 0.3 A for ≤1 ms.
Can BCP56TX replace BCP56-10T in existing designs?
Yes-BCP56TX and BCP56-10T share identical package, pinout, voltage/current ratings, and thermal characteristics. The only difference is hFE range: BCP56TX (63–250) vs. BCP56-10T (63–160). No layout or bias changes are needed unless the original design relied on the tighter upper gain limit of the -10T variant.
How does the dual-collector configuration affect PCB layout?
Pins 2 and 4 are internally connected to the same collector node and must both be soldered to a shared thermal pad. The recommended footprint (Figure 19) specifies a 7.65 mm × 3.9 mm copper area with four 1.2 mm solder lands-ensuring mechanical stability and optimal heat transfer to inner layers or chassis ground.
Is BCP56TX qualified for automotive applications?
No-per Revision History Table 9, Rev. 3 (2022) explicitly states this device is non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade process controls. For automotive use, Nexperia recommends the BCP56T-Q series, which carries full AEC-Q101 qualification and extended temperature validation.
BCP56TX 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:
- 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:
- 1.8 W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP56TX FAQ
1.How can I place an order for BCP56TX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP56TX 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 BCP56TX reliable?
The price and inventory of BCP56TX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP56TX is usually 5 days.
3.What payment methods are accepted for BCP56TX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP56TX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP56TX?
BCP56TX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP56TX 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 BCP56TX?
For technical support, including BCP56TX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP56TX requirements.
6.How does Aetrix verify that BCP56TX is sourced from the original manufacturer or authorized distributors?
All BCP56TX 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 BCP56TX meets industry standards.
7.What is the process for return or replacement of BCP56TX?
All BCP56TX units undergo pre-shipment inspection (PSI). If there is an issue with BCP56TX, 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 BCP56TX part is unused and in its original packaging.
Return procedure for BCP56TX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCP56TX Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
