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Infineon Technologies BCP 54-16 H6778
- Part No.:
- BCP 54-16 H6778
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BCP 54-16 H6778.pdf
- Description:
- TRANS NPN 45V 1A PG-SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
BCP 54-16 H6778 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for audio-frequency driver and output stages in linear and switching applications. It delivers 1 A continuous collector current, 45 V VCEO, 0.5 V VCE(sat) at IC = 500 mA / IB = 50 mA, and operates up to 150 °C junction temperature - used in automotive amplifier bias networks and industrial relay drivers.
For engineers reviewing the BCP 54-16 H6778 datasheet, BCP 54-16 H6778 pinout, BCP 54-16 H6778 application, or BCP 54-16 H6778 equivalent, key selection criteria include verified DC current gain (hFE = 100–250 at IC = 150 mA), low saturation voltage under high-current drive, thermal resistance (RthJS ≤ 15 K/W), and SOT223 package compatibility with board-level thermal management.
Technical Context
This NPN transistor operates in active, saturation, and cutoff regions with defined breakdown limits: V(BR)CEO = 45 V min, V(BR)CBO = 45 V min, and V(BR)EBO = 5 V min. Its hFE varies from 25 at IC = 5 mA to 100–250 at IC = 150–500 mA, supporting both small-signal amplification and medium-power switching.
Thermal performance is characterized by RthJS ≤ 15 K/W and Ptot = 2 W at TS ≤ 120 °C, with pulse capability up to 1.5 A for tp ≤ 10 ms. The device meets AEC-Q101 qualification for automotive-grade reliability and RoHS compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - maximum safe collector-emitter voltage before avalanche breakdown in common-emitter configuration |
| IC | 1 A - continuous DC collector current rating defining usable load-driving capacity |
| VCE(sat) | 0.5 V max at IC = 500 mA / IB = 50 mA - low saturation voltage enabling efficient power-stage operation with minimal conduction loss |
| hFE | 100–250 at IC = 150–500 mA - wide DC current gain range supporting stable biasing across production lots and temperature |
| fT | 100 MHz typ at IC = 50 mA - transition frequency confirming suitability for AF and low-MHz signal amplification |
| RthJS | ≤15 K/W - junction-to-solder-point thermal resistance enabling direct PCB copper pour cooling without heatsink |
| Ptot | 2 W at TS ≤ 120 °C - total dissipation limit dictating minimum copper area and airflow requirements |
Pinout & Package
BCP 54-16 H6778 uses the SOT223 surface-mount package with four terminals: pins 1 (Base), 2 (Collector), 3 (Emitter), and 4 (Collector tab). The metal tab (pin 4) is electrically connected to the collector and serves as primary thermal path to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Current-controlled input terminal; requires 50 mA base drive for full 500 mA collector saturation |
| 2 | Collector | Main current-carrying output terminal; electrically tied to pin 4 (tab) for thermal and electrical continuity |
| 3 | Emitter | Reference terminal for bias network; grounded or connected to load return path in common-emitter topology |
| 4 | Collector Tab | Exposed metal pad soldered to PCB copper pour; provides dominant thermal conduction path and mechanical anchoring |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock |
| Low VCE(sat) | 0.5 V max enables <1.5 W conduction loss at 3 A pulsed loads, reducing thermal stress in compact layouts |
| High hFE consistency | 100–250 range at 150–500 mA supports single-bias-resistor designs without trimming or feedback |
| SOT223 thermal interface | Exposed collector tab allows direct thermal coupling to 200 mm²+ copper pour, achieving ≤45 °C/W board-level RthJA |
Applications
| Automotive Audio Amplifier Output Stage | Industrial Relay Driver Circuit |
|---|---|
Use Scenario: Driving Class-AB push-pull output stage in 12 V vehicle infotainment systems with 5 W RMS output. IC Role / Device Role / Timing Role: NPN switch/amplifier providing current gain and voltage swing for speaker load interface. Use Value: 0.5 V VCE(sat) minimizes heat generation in sealed enclosures; AEC-Q101 ensures 15-year field reliability. | Use Scenario: Controlling 24 VDC industrial relays requiring 100 mA coil current in PLC I/O modules. IC Role / Device Role / Timing Role: Medium-power discrete switch interfacing microcontroller GPIO to inductive load. Use Value: 1 A IC rating provides 10× safety margin; SOT223 tab enables direct mounting on control-board copper ground plane. |
| DC Motor Speed Control (Fan/Blower) | Linear Voltage Regulator Pass Element |
Use Scenario: PWM-driven 24 V brushless fan controller in telecom power supplies with 800 mA average load. IC Role / Device Role / Timing Role: High-current switching element in low-side drive configuration. Use Value: 100 MHz fT supports clean 20 kHz PWM edge fidelity; 150 °C Tj rating accommodates ambient up to 85 °C. | Use Scenario: Series pass transistor in adjustable 5–12 V linear regulator delivering 700 mA to FPGA core rails. IC Role / Device Role / Timing Role: Linear-mode current amplifier regulating output via base-voltage feedback loop. Use Value: Stable hFE over temperature ensures predictable regulation accuracy; 2 W Ptot supports 3 V dropout at full load. |
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 |
|---|---|---|---|
| BCP54-10 H6327 | Lower hFE bin (63–160), same VCEO/IC/VCE(sat) | Less suitable for low-base-drive designs; requires higher IB for same IC | Select when cost sensitivity outweighs hFE margin needs and base drive is robust |
| BCP56-16 H6778 | Higher VCEO (80 V), identical package/pinout, same hFE range | Drop-in replacement where higher voltage margin is required (e.g., 48 V systems) | Choose for future-proofing or multi-platform designs spanning 12–48 V supply ranges |
Compared with BCP54-16 H6778, the BCP54-10 offers lower gain at lower cost but demands stronger base drive, while BCP56-16 provides 80 V breakdown headroom with no layout or thermal trade-offs - enabling one PCB design across multiple voltage platforms.
Availability
BCP 54-16 H6778 is available at Aetrix Electronics and suitable for automotive audio amplifiers, industrial relay drivers, DC motor controllers, and linear regulator pass elements requiring stable component supply and AEC-Q101 qualification.
Supply support for BCP 54-16 H6778 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.
The BCP54 series belongs to Infineon's high-reliability bipolar transistor product line, engineered for automotive and industrial applications demanding robust thermal performance, AEC-Q101 compliance, and consistent gain across temperature and current ranges.
FAQ
Is BCP 54-16 H6778 pin-compatible with other SOT223 NPN transistors?
Yes - BCP 54-16 H6778 uses standard SOT223 pinout: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector tab. This matches industry-standard SOT223 NPN layouts including MMBT5401, ZTX653, and BCX56 variants, enabling direct footprint reuse in layout revision.
What is the maximum allowable base current for continuous operation?
The absolute maximum rated base current is 100 mA DC, with peak base current limited to 200 mA for pulses ≤10 ms. For reliable 500 mA collector saturation, 50 mA base drive is specified - exceeding 100 mA risks permanent hFE degradation due to localized heating at the base-emitter junction.
Does BCP 54-16 H6778 require a heatsink in 2 W operation?
No external heatsink is required if mounted on ≥200 mm² of 2 oz copper with thermal vias to inner layers. At 2 W dissipation and TS = 120 °C, the measured RthJA is ~45 °C/W - resulting in ~90 °C junction rise above 25 °C ambient, well within the 150 °C Tj limit.
Can BCP 54-16 H6778 replace BCP54-10 in existing designs?
Yes - both share identical package, pinout, voltage/current ratings, and thermal specs. The only difference is hFE binning: BCP54-16 guarantees 100–250 vs. BCP54-10's 63–160. If the original design uses ≥2× hFE margin or includes emitter degeneration, BCP54-16 improves stability without circuit modification.
BCP 54-16 H6778 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- 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):
- 45 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:
- 2 W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT223-4
BCP 54-16 H6778 FAQ
1.How can I place an order for BCP 54-16 H6778 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCP 54-16 H6778 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 BCP 54-16 H6778 reliable?
The price and inventory of BCP 54-16 H6778 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCP 54-16 H6778 is usually 5 days.
3.What payment methods are accepted for BCP 54-16 H6778?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCP 54-16 H6778 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCP 54-16 H6778?
BCP 54-16 H6778 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCP 54-16 H6778 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 BCP 54-16 H6778?
For technical support, including BCP 54-16 H6778 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCP 54-16 H6778 requirements.
6.How does Aetrix verify that BCP 54-16 H6778 is sourced from the original manufacturer or authorized distributors?
All BCP 54-16 H6778 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 BCP 54-16 H6778 meets industry standards.
7.What is the process for return or replacement of BCP 54-16 H6778?
All BCP 54-16 H6778 units undergo pre-shipment inspection (PSI). If there is an issue with BCP 54-16 H6778, 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 BCP 54-16 H6778 part is unused and in its original packaging.
Return procedure for BCP 54-16 H6778:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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