My Inquiry
My Account
Diodes Incorporated BCP56TA
- Part No.:
- BCP56TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP56TA.pdf
- Description:
- TRANS NPN 80V 1A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,477
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BCP56TA from Nexperia is an NPN silicon planar medium-power transistor in SOT223 package, rated for 1 A continuous collector current, 80 V VCEO, and 0.5 V VCE(sat) at IC=500 mA/IB=50 mA; used in audio frequency driver and output stage circuits in industrial power supplies and consumer audio amplifiers.
For engineers reviewing the BCP56TA datasheet, BCP56TA pinout, BCP56TA application, or BCP56TA equivalent, key selection criteria include verified hFE bins (40–250), thermal performance in SOT223, low saturation voltage under medium-current switching, and complementary pairing with BCP53 for push-pull configurations.
Technical Context
This NPN transistor operates as a linear amplifier or switch in medium-power analog and digital interface stages. Its 125 MHz fT supports AF and low-speed switching up to ~100 kHz, while the 2 W Ptot rating enables operation without forced cooling in PCB-mounted applications.
The device features a fixed SOT223-3L footprint with emitter-collector-base terminal assignment confirmed by marking "BCP56" and pin diagram "C C E B 3 – 18". Absolute maximum ratings are validated across -55°C to +150°C junction temperature range, supporting industrial ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 80 V - supports rail voltages up to ±40 V in Class AB audio outputs |
| IC (cont.) | 1 A - delivers sufficient drive for small-signal power stages without heatsinking |
| VCE(sat) | 0.5 V @ 500 mA/50 mA - minimizes conduction loss in saturated-switching applications |
| hFE | 40–250 - binned variants (BCP56-10/BCP56-16) enable predictable DC gain matching |
| fT | 125 MHz - ensures stable gain in AF amplification and low-frequency PWM control loops |
| Ptot | 2 W @ Tamb=25°C - defines thermal derating curve for board-level power dissipation |
Pinout & Package
SOT223-3L surface-mount package with standard lead frame layout: tab-connected collector, exposed thermal pad on underside, and 3.5 mm × 6.5 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | Current sink node | Connected to ground or low-impedance return path; electrically isolated from tab |
| Pin 2 (Base) | Control input | Receives bias current to regulate collector-emitter conduction; requires series resistor for current limiting |
| Pin 3 (Collector) | High-side current source | Connected to load and supply rail; tab is internally bonded to collector for thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| Complementary pair with BCP53 | Enables matched push-pull output stages without discrete binning effort |
| Low VCE(sat) at medium current | Reduces power loss and self-heating in linear regulator pass elements and driver stages |
| 150°C max junction temperature | Supports operation in sealed enclosures or high-ambient industrial environments |
| hFE binned variants | Allows precise DC bias setting in amplifier designs requiring gain stability across production lots |
Applications
| Audio Output Stage | DC-DC Converter Driver |
|---|---|
Use Scenario: Final amplification stage in 5–10 W consumer audio amplifiers. IC Role / Device Role / Timing Role: NPN medium-power switch/amplifier delivering current to speaker load. Use Value: 0.5 V VCE(sat) limits quiescent heating; hFE binning ensures consistent bias point across units. | Use Scenario: High-side switch in non-isolated buck converter gate driver stage. IC Role / Device Role / Timing Role: Medium-current level shifter and current buffer between controller IC and MOSFET gate. Use Value: 125 MHz fT and 1 A IC support fast gate charging at ≤500 kHz switching frequencies. |
| Linear Voltage Regulator Pass Element | Industrial Sensor Interface Amplifier |
Use Scenario: Series pass transistor in adjustable 3–12 V, 500 mA linear regulators. IC Role / Device Role / Timing Role: Power transistor regulating output voltage via base-controlled emitter-follower configuration. Use Value: 2 W Ptot and 80 V VCEO allow safe operation with 15 V input headroom and full-load dissipation. | Use Scenario: Current booster for op-amp outputs driving 4–20 mA sensor transmitters. IC Role / Device Role / Timing Role: NPN emitter follower providing low-impedance current sourcing capability. Use Value: 1 A IC and 40–250 hFE ensure stable 20 mA loop compliance across temperature and unit variation. |
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 |
|---|---|---|---|
| ZTX653 | TO-92 package, 1.5 A IC, 100 V VCEO, higher VCE(sat) (0.7 V) | Through-hole mounting; lower thermal efficiency than SOT223 | Prefer when manual assembly or legacy board compatibility required |
| MJD112 | TO-220 package, 2 A IC, 100 V VCEO, 1.5 W Ptot, no hFE binning | Requires heatsink above 500 mA; larger footprint | Choose for higher current demand where board space allows TO-220 |
Compared with ZTX653 and MJD112, BCP56TA offers superior thermal performance per unit area in SMT layouts, tighter hFE control for precision biasing, and optimized VCE(sat) for low-loss operation at 500 mA-making it preferred for space-constrained, thermally sensitive AF and regulator designs.
Availability
BCP56TA is available at Aetrix Electronics and suitable for audio output stages, DC-DC converter drivers, linear voltage regulator pass elements, and industrial sensor interface amplifiers requiring stable component supply and long-term manufacturability.
Supply support for BCP56TA 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 and industrial-grade components.
BCP56TA belongs to Nexperia's medium-power bipolar transistor product line, engineered for robust performance in audio, power management, and industrial interface applications where thermal efficiency and gain consistency are critical.
FAQ
Is BCP56TA pin-compatible with BCP53?
No-BCP56TA is NPN and BCP53 is PNP; they share identical SOT223-3L mechanical footprint and complementary electrical ratings (e.g., same VCEO/IC magnitudes), but polarity reversal means pin functions are mirrored: BCP53 emitter connects to supply rail, while BCP56TA emitter connects to ground. Layout must reflect this inversion.
What is the thermal resistance RθJA of BCP56TA in standard SOT223 layout?
Per Nexperia documentation, RθJA is 62.5°C/W for a 1 cm² copper pad on FR-4 PCB with no internal planes. With 2 cm² copper and two thermal vias, RθJA improves to ~45°C/W. Junction-to-case (RθJC) is 5°C/W, confirming the collector tab is the primary thermal path.
Does BCP56TA support pulsed operation beyond its continuous IC rating?
Yes-absolute maximum ICM is 1.5 A for pulse widths ≤300 µs and duty cycle ≤2%, as verified in the datasheet's pulsed test conditions. This enables short-duration surge handling in protection circuits or peak-current sensing paths without thermal runaway.
How does hFE binning affect circuit design for BCP56-10 vs. BCP56-16?
BCP56-10 guarantees hFE ≥40 at IC=150 mA, while BCP56-16 guarantees ≥100 under same conditions. Designers select BCP56-10 for stable bias in high-gain feedback loops and BCP56-16 where minimal base drive current is critical-e.g., microcontroller GPIO-driven switches with limited output current.
BCP56TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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:
- 40 @ 150mA, 2V
- Power - Max:
- 2 W
- Frequency - Transition:
- 150MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
BCP56TA FAQ
1.How can I place an order for BCP56TA through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP56TA 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 BCP56TA reliable?
The price and inventory of BCP56TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP56TA is usually 5 days.
3.What payment methods are accepted for BCP56TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP56TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP56TA?
BCP56TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP56TA 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 BCP56TA?
For technical support, including BCP56TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP56TA requirements.
6.How does Aetrix verify that BCP56TA is sourced from the original manufacturer or authorized distributors?
All BCP56TA 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 BCP56TA meets industry standards.
7.What is the process for return or replacement of BCP56TA?
All BCP56TA units undergo pre-shipment inspection (PSI). If there is an issue with BCP56TA, 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 BCP56TA part is unused and in its original packaging.
Return procedure for BCP56TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCP56TA 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
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
