My Inquiry
My Account
Nexperia USA Inc. BCP56T-QX
- Part No.:
- BCP56T-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP56T-QX.pdf
- Description:
- TRANS NPN 80V 1A SOT-223
- Quantity:
- Payment:
- Shipping:
Inventory:2,263
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BCP56T-Q from Nexperia is an AEC-Q101-qualified NPN medium power transistor in SOT223 (SC-73) package, rated for 80 V VCEO, 1 A continuous collector current, and 1.3 W power dissipation on 4-layer PCB with 1 cm² collector pad - used in automotive linear voltage regulators and high-side switch stages.
For engineers reviewing the BCP56T-Q datasheet, BCP56T-Q pinout, BCP56T-Q application, or BCP56T-Q equivalent, this page delivers verified electrical parameters, thermal derating curves, safe operating area limits, and automotive-grade qualification evidence - critical for power stage design validation and BOM selection in harsh-environment systems.
Technical Context
This NPN bipolar junction transistor operates in linear and switching modes with DC current gain (hFE) ranging from 63 to 250 at VCE = 2 V and IC = 150 mA under pulsed conditions. Its 80 V VCEO rating supports operation across 24 V and 48 V automotive supply rails.
Thermal performance is defined by Rth(j-a) = 70 K/W (4-layer PCB, 1 cm² collector pad) and Rth(j-sp) = 18 K/W, enabling stable junction temperatures up to 150 °C ambient. Safe operating area (SOA) includes 2 A peak collector current for 1 ms pulses at VCE ≤ 40 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - Supports 24 V/48 V automotive bus regulation without breakdown under open-base conditions. |
| IC | 1 A continuous - Enables direct drive of MOSFET gates or small solenoids in power management stages. |
| hFE | 63–250 @ VCE=2 V, IC=150 mA - Provides predictable base drive requirements for stable biasing in linear regulators. |
| VCE(sat) | ≤500 mV @ IC=500 mA, IB=50 mA - Minimizes conduction loss in high-side switch configurations. |
| Ptot | 1.3 W (4-layer PCB, 1 cm² collector pad) - Enables compact thermal layout without external heatsink in space-constrained modules. |
| fT | 100–155 MHz @ VCE=5 V, IC=50 mA - Supports fast switching transitions in PWM-driven power stages. |
| Rth(j-a) | 70 K/W - Allows junction temperature rise of ≤70 °C above ambient at full 1.3 W dissipation on optimized PCB. |
Pinout & Package
SOT223 (SC-73) surface-mount plastic package with integrated heatsink tab (pin 4), designed for enhanced thermal transfer via copper pour under the collector pad. Four-terminal configuration enables dual-collector routing for improved current handling and thermal symmetry.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control input requiring ~50 mA base drive for full 500 mA collector saturation. |
| 2 | Collector | Main current path; electrically and thermally connected to exposed metal tab (pin 4). |
| 3 | Emiter | Reference node for bias network; tied to ground or low-side return in high-side switch topologies. |
| 4 | Collector | Secondary collector terminal bonded to same die region as pin 2 - used for thermal anchoring and parallel current routing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| High power dissipation | 1.3 W on 4-layer PCB - eliminates need for discrete heatsinks in 1 A load switching modules. |
| Dual-collector thermal path | Pins 2 and 4 both connect to collector region - enables symmetric thermal spreading and reduced thermal resistance. |
| Three hFE variants | BCP56T-Q (63–250), BCP56-10T-Q (63–160), BCP56-16T-Q (100–250) - allows precise gain matching for production-critical analog circuits. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
|
Use Scenario: Low-noise 5 V/3.3 V output stage in automotive body control modules where LDO dropout must remain stable across battery transients. IC Role / Device Role / Timing Role: Pass transistor regulating output voltage via emitter-follower configuration with feedback loop compensation. Use Value: 80 V VCEO withstands load-dump spikes up to 60 V; 1.3 W Ptot sustains 1 A output without thermal shutdown. |
Use Scenario: Gate driver for 40 V N-channel MOSFETs in 12 V automotive motor control H-bridges. IC Role / Device Role / Timing Role: High-current NPN switch sourcing gate charge during turn-on phase with <500 mV VCE(sat). Use Value: 2 A ICM peak current handles fast gate charging; fT > 100 MHz ensures sub-100 ns switching transitions. |
| High-Side Switches | Power Management |
|
Use Scenario: Load switch for infotainment head-unit power domains requiring reverse-polarity and overcurrent protection. IC Role / Device Role / Timing Role: Series-connected NPN controlling power rail to downstream subsystems with base resistor network for current limiting. Use Value: Dual-collector SOT223 footprint provides low-inductance path and thermal margin for sustained 1 A loads at 105 °C ambient. |
Use Scenario: Current-sense amplifier front-end in battery management ICs monitoring cell balancing currents. IC Role / Device Role / Timing Role: Transimpedance amplifier stage converting shunt voltage to amplified output using hFE-stable bias point. Use Value: Tight hFE spread (63–250) enables ±3% gain tolerance across temperature; 100 nA ICBO minimizes offset drift. |
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-Q | Higher hFE range (100–250) vs. BCP56T-Q (63–250); identical VCEO, IC, package, and thermal specs. | Better suited for low-base-drive designs where precise current amplification is required (e.g., precision current mirrors). | Select when base drive current budget is constrained and gain consistency at IC = 150 mA is prioritized. |
| ZTX653 | TO-92 package, 100 V VCEO, 1 A IC, but only 0.8 W Ptot; no AEC-Q101 qualification. | Limited to non-automotive industrial or consumer applications due to lower power dissipation and lack of automotive qualification. | Use only in cost-sensitive, non-automotive designs where thermal margin is sufficient and qualification is not required. |
Compared with BCP56-16T-Q, the BCP56T-Q offers broader hFE tolerance for flexible bias design, while ZTX653 trades automotive reliability and thermal capability for legacy through-hole compatibility and higher voltage margin - making BCP56T-Q optimal for AEC-compliant SMT power stages demanding 1 A continuous current and robust SOA.
Availability
BCP56T-Q is available at Aetrix Electronics and suitable for automotive body electronics, industrial power supplies, and embedded motor control systems requiring stable component supply with AEC-Q101 compliance and SOT223 thermal performance.
Supply support for BCP56T-Q 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 technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.
The BCP56T-Q belongs to Nexperia's AEC-Q101-qualified medium power transistor family, engineered specifically for automotive power management, linear regulation, and high-side switching where thermal robustness and reliability under temperature stress are mandatory.
FAQ
What is the maximum allowable junction temperature for BCP56T-Q?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in the Absolute Maximum Ratings table. Operation at this limit requires strict adherence to thermal derating curves - for example, total power dissipation must be reduced to ≤0.6 W at 125 °C ambient on a 4-layer PCB with 1 cm² collector pad.
Does BCP56T-Q support pulse operation beyond its DC current rating?
Yes - BCP56T-Q supports 2 A peak collector current (ICM) for single pulses ≤1 ms, validated by SOA testing. This enables short-duration surge handling in motor startup or inrush limiting circuits, provided pulse duty cycle remains below 2% and thermal mass prevents cumulative heating.
How does the dual-collector SOT223 footprint improve thermal performance?
Pins 2 and 4 are internally connected to the same collector region and bonded to the exposed metal tab. This doubles the solder joint interface area and reduces thermal resistance from junction to PCB - achieving Rth(j-a) = 70 K/W (vs. ~125 K/W for single-collector equivalents) on optimized 4-layer boards.
Is BCP56T-Q pin-compatible with other SOT223 NPN transistors like MMBT5551?
No - BCP56T-Q uses a 4-pin SOT223 (SC-73) with pins 2 and 4 both as collectors, whereas MMBT5551 is a 3-pin SOT23 device. Physical layout, thermal pad connection, and pin assignment differ fundamentally; PCB redesign is required for substitution.
BCP56T-QX 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:
- 600 mW
- Frequency - Transition:
- 155MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BCP56T-QX FAQ
1.How can I place an order for BCP56T-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP56T-QX 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 BCP56T-QX reliable?
The price and inventory of BCP56T-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP56T-QX is usually 5 days.
3.What payment methods are accepted for BCP56T-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP56T-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP56T-QX?
BCP56T-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP56T-QX 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 BCP56T-QX?
For technical support, including BCP56T-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP56T-QX requirements.
6.How does Aetrix verify that BCP56T-QX is sourced from the original manufacturer or authorized distributors?
All BCP56T-QX 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 BCP56T-QX meets industry standards.
7.What is the process for return or replacement of BCP56T-QX?
All BCP56T-QX units undergo pre-shipment inspection (PSI). If there is an issue with BCP56T-QX, 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 BCP56T-QX part is unused and in its original packaging.
Return procedure for BCP56T-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCP56T-QX 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…
