My Inquiry
My Account
Nexperia USA Inc. BC54-10PAS-QX
- Part No.:
- BC54-10PAS-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
BC54-10PAS-QX.pdf
- Description:
- TRANS NPN 45V 1A DFN2020D-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,986
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC54-10PAS-Q from Nexperia is an AEC-Q101-qualified NPN medium power transistor in a DFN2020D-3 (SOT1061D) leadless package, rated for 45 V VCEO, 1 A continuous collector current, and 160 hFE at IC = 150 mA, used as a high-side switch or MOSFET driver in automotive power management circuits.
For engineers reviewing the BC54-10PAS-Q datasheet, BC54-10PAS-Q pinout, BC54-10PAS-Q application, or BC54-10PAS-Q equivalent, this device offers verified thermal performance on FR4 PCBs, side-wettable flanks for AOI-compatible solder joint inspection, and two defined hFE bins for predictable gain control in linear regulators and battery-driven devices.
Technical Context
This transistor operates as a single-element NPN bipolar junction device with base-controlled current amplification. Its design emphasizes thermal efficiency via an exposed collector pad and supports pulsed operation up to 2 A (tp ≤ 1 ms) while maintaining stable DC current gain across −55 °C to 150 °C ambient range.
The DFN2020D-3 package integrates solderable side flanks and a 1.3 mm pitch, enabling compact layout and reliable reflow soldering. It delivers Rth(j-a) as low as 76 K/W under optimized 4-layer PCB mounting with 1 cm² collector pad - critical for sustained 1 A operation in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown; enables use in 36 V automotive systems with margin. |
| IC | 1 A continuous - Sustained current-handling capability without derating at Tamb ≤ 25 °C on standard FR4. |
| hFE | 63–160 @ VCE = 2 V, IC = 150 mA - Tighter gain bin than BC54PAS-Q (63–250), improving predictability in feedback loops. |
| VCE(sat) | ≤ 500 mV @ IC = 500 mA, IB = 50 mA - Low saturation voltage reduces conduction loss in switching applications. |
| Ptot | 1.65 W @ Tamb = 25 °C on 4-layer FR4 with 1 cm² collector pad - Enables higher power density than legacy SOT-23 packages. |
| fT | 100–180 MHz - Supports high-speed switching up to ~10 MHz with adequate gain margin. |
| Rth(j-sp) | 20 K/W - Junction-to-solder-point thermal resistance confirms efficient heat transfer to PCB copper. |
Pinout & Package
BC54-10PAS-Q uses the DFN2020D-3 (SOT1061D) ultra-thin leadless package: 2.0 mm × 2.0 mm × 0.65 mm body, exposed collector pad, side-wettable flanks, and 1.3 mm pin pitch. Thermal performance is optimized when the collector pad is connected to ≥1 cm² of internal or external copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires 50 mA base drive for full 500 mA collector saturation. |
| 2 | Emitter (E) | Reference terminal for biasing; internally connected to substrate ground plane in DFN layout. |
| 3 | Collector (C) | Power output terminal; electrically and thermally tied to exposed bottom pad for low Rth path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under stress conditions including HTGB, HTRB, and temperature cycling - suitable for engine control and body electronics. |
| Side-wettable flanks (SWF) | Enables automated optical inspection (AOI) of solder fillets without X-ray, reducing post-reflow defect escape in high-volume assembly. |
| Exposed collector pad | Provides dual-path thermal conduction: vertical (to PCB) and lateral (via side flanks), lowering effective Rth(j-a) by up to 55% vs. standard SOT-23. |
| Two hFE bins | BC54-10PAS-Q (63–160) and BC54-16PAS-Q (100–250) allow precise gain selection for analog feedback stability or digital switching thresholds. |
| Ultra-thin profile | 0.65 mm max height enables stacking under shields or integration into slim ECU housings where Z-axis clearance is constrained. |
Applications
| Linear Voltage Regulators | Battery-Driven Devices |
|---|---|
Use Scenario: Pass transistor in adjustable LDOs supplying 3.3 V/1 A to microcontrollers in ADAS domain controllers. IC Role / Device Role / Timing Role: NPN pass element operating in linear mode, dissipating up to 1.2 W during dropout conditions. Use Value: 1.65 W Ptot and 76 K/W Rth(j-a) enable stable regulation without external heatsink at 85 °C ambient. |
Use Scenario: Load switch controlling power to BLE modules in automotive key fobs with 3.7 V Li-ion supply. IC Role / Device Role / Timing Role: High-side switch enabling fast turn-on (<1 µs) and low quiescent current in sleep mode. Use Value: VCE(sat) ≤ 500 mV at 500 mA ensures <500 mW conduction loss, extending battery life beyond 2 years. |
| MOSFET Drivers | High-Side Switches |
Use Scenario: Gate driver stage for 40 V N-channel power MOSFETs in 12 V automotive motor control H-bridges. IC Role / Device Role / Timing Role: Current amplifier boosting MCU GPIO output to deliver >1 A peak gate charge current. Use Value: fT ≥ 100 MHz and ICM = 2 A support <100 ns rise/fall times for PWM frequencies up to 20 kHz. |
Use Scenario: Direct high-side load switch for 24 V solenoid valves in transmission control units. IC Role / Device Role / Timing Role: Single-transistor high-side switch with integrated base resistor network (external) for robust ESD immunity. Use Value: 45 V VCEO provides 2× safety margin over 24 V nominal rail, preventing avalanche failure during load dump transients. |
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 |
|---|---|---|---|
| BC54-16PAS-Q | Higher hFE bin: 100–250 vs. 63–160; identical VCEO, IC, package, and thermal specs. | Better suited for low-base-drive applications like low-power amplifiers or precision current mirrors where gain consistency matters. | Select when circuit requires tighter hFE tolerance or lower IB at same IC; not drop-in if existing design relies on mid-bin gain. |
| BC847BW | SOT-323 package (larger Rth(j-a) ≈ 300 K/W), lower IC = 100 mA, VCEO = 45 V, hFE = 110–800 - wider gain spread, no AEC-Q101 rating. | Limited to non-automotive consumer or industrial signal switching; unsuitable for 1 A loads or under-hood environments. | Only consider for cost-sensitive, non-automotive prototypes where thermal and reliability requirements are relaxed. |
Compared with BC54-16PAS-Q, BC54-10PAS-Q trades gain range for improved predictability in feedback-critical roles; versus BC847BW, it delivers 10× higher current, 5× better thermal performance, and certified automotive qualification - making it the only viable option for production-grade 1 A high-side switching.
Availability
BC54-10PAS-Q is available at Aetrix Electronics and suitable for automotive power management, battery-powered ECUs, and MOSFET driver stages requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for BC54-10PAS-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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BC54xPAS-Q series targets automotive power control applications, delivering medium-power NPN transistors with enhanced thermal performance and AOI-ready packaging for next-generation ECU miniaturization.
FAQ
What is the maximum allowable junction temperature for BC54-10PAS-Q?
The absolute maximum junction temperature (Tj) is 150 °C per IEC 60134 limiting values. Operation above this threshold risks permanent degradation of hFE and increased leakage. Derating curves in Figure 1 confirm safe operation up to 125 °C ambient when mounted on 4-layer FR4 with 1 cm² collector pad.
Does BC54-10PAS-Q require a base resistor in switching applications?
Yes - unlike digital transistors, BC54-10PAS-Q has no integrated base resistors. A series base resistor must be selected to ensure IB ≥ IC/10 for saturation (e.g., 50 mA for 500 mA IC). Typical values range from 100 Ω to 1 kΩ depending on drive voltage and speed requirements.
Can BC54-10PAS-Q replace BC547C in existing designs?
No - BC547C uses TO-92 packaging (higher Rth(j-a), larger footprint, no AEC-Q101 rating), while BC54-10PAS-Q is DFN2020D-3, leadless, and automotive-qualified. Layout, thermal management, and solder process must be redesigned; electrical parameters are similar but not mechanically interchangeable.
Is the marking code 'CE' sufficient to identify BC54-10PAS-Q on the board?
Yes - Table 4 confirms 'CE' is the unique top-side marking for BC54-10PAS-Q. This 2-character laser mark appears on the transparent top surface of the DFN2020D-3 package and is readable under standard AOI systems, supporting automated traceability in automotive manufacturing lines.
BC54-10PAS-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC54xPAS-Q
- Package/Case:
- 3-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 63 @ 150mA, 2V
- Power - Max:
- 420 mW
- Frequency - Transition:
- 180MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN2020D-3
BC54-10PAS-QX FAQ
1.How can I place an order for BC54-10PAS-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC54-10PAS-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 BC54-10PAS-QX reliable?
The price and inventory of BC54-10PAS-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC54-10PAS-QX is usually 5 days.
3.What payment methods are accepted for BC54-10PAS-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC54-10PAS-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC54-10PAS-QX?
BC54-10PAS-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC54-10PAS-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 BC54-10PAS-QX?
For technical support, including BC54-10PAS-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC54-10PAS-QX requirements.
6.How does Aetrix verify that BC54-10PAS-QX is sourced from the original manufacturer or authorized distributors?
All BC54-10PAS-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 BC54-10PAS-QX meets industry standards.
7.What is the process for return or replacement of BC54-10PAS-QX?
All BC54-10PAS-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC54-10PAS-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 BC54-10PAS-QX part is unused and in its original packaging.
Return procedure for BC54-10PAS-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC54-10PAS-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…
