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Nexperia USA Inc. BC68-25PA-QX
- Part No.:
- BC68-25PA-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- 3-PowerUDFN
- Datasheet:
-
BC68-25PA-QX.pdf
- Description:
- TRANS PNP 20V 2A 3HUSON
- Quantity:
- Payment:
- Shipping:
Inventory:5,824
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Product details
Overview
BC68-25PA-QX from Nexperia is an AEC-Q101-qualified NPN medium power transistor in a thermally enhanced DFN2020-3 (SOT1061) package, rated for 20 V VCEO, 2 A continuous collector current, and 3 A peak pulse current. It delivers DC current gain (hFE) of 160–375 at VCE = 1 V and IC = 500 mA, with low VCE(sat) ≤ 0.6 V at IC = 2 A / IB = 200 mA, enabling efficient low-side switching in automotive power management circuits.
For engineers reviewing the BC68-25PA-QX datasheet, BC68-25PA-QX pinout, BC68-25PA-QX application, or BC68-25PA-QX equivalent, this device is selected for high-reliability linear regulation, MOSFET gate driving, and battery-powered load control where thermal performance, compact footprint, and automotive-grade qualification are mandatory.
Technical Context
This NPN transistor operates as a medium-power discrete switch or linear amplifier with a maximum junction temperature of 150 °C and qualified AEC-Q101 stress testing for automotive environments. Its exposed collector pad enables direct thermal coupling to PCB copper, supporting up to 1.65 W total power dissipation on 4-layer FR4 with optimized collector pad layout.
The device exhibits pulsed transition frequency (fT) of 40–170 MHz and collector capacitance (Cc) of 22 pF at VCB = 10 V, making it suitable for moderate-speed switching applications up to ~100 MHz. Base-emitter breakdown voltage is 5 V, limiting drive voltage headroom but ensuring robustness against ESD-induced base damage in automotive harness interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 20 V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit for low-side switch operation. |
| IC (continuous) | 2 A - Continuous collector current rating at Tamb = 25 °C; supports sustained loads like LED drivers or fan controllers. |
| hFE @ IC = 500 mA | 160–375 - Confirmed DC current gain range at VCE = 1 V; enables predictable base drive sizing for saturation. |
| VCE(sat) @ IC = 2 A | ≤ 0.6 V - Low saturation voltage ensures <1.2 W conduction loss at full current, critical for thermal budget in sealed enclosures. |
| Rth(j-a) (min) | 76 K/W - Minimum junction-to-ambient thermal resistance on 4-layer FR4 with 1 cm² collector pad; enables >1.6 W power handling without active cooling. |
| Package | SOT1061 (DFN2020-3) - 2.0 × 2.0 × 0.65 mm leadless thermally enhanced package with exposed collector pad for PCB heat sinking. |
| AEC-Q101 Qualified | Yes - Validated per Automotive Electronics Council stress test standard for discrete semiconductors; supports under-hood and body-control module use. |
Pinout & Package
BC68-25PA-QX uses the SOT1061 (DFN2020-3) package: a 2.0 mm × 2.0 mm × 0.65 mm leadless, thermally enhanced plastic package with an exposed collector pad on the bottom side for direct PCB thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; requires current-limited drive (max IB = 0.4 A) to achieve full saturation at 2 A collector load. |
| 2 | Emiter (E) | Reference node for base-emitter junction; connected to system ground or low-side return path in common-emitter configuration. |
| 3 | Collector (C) | Power output terminal; electrically and thermally connected to exposed bottom pad; must be routed to large copper area for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Thermally enhanced DFN package | Exposed collector pad reduces Rth(j-a) to 76 K/W - enables 1.65 W dissipation without heatsink on 4-layer PCB. |
| High-current capability | 2 A continuous / 3 A pulsed - supports motor drivers, solenoid controls, and high-brightness LED arrays without paralleling devices. |
| Automotive qualification | AEC-Q101 certified - validated for temperature cycling, humidity bias, ESD, and mechanical shock; approved for engine bay and chassis modules. |
| Two hFE selections | BC68-25PA-QX offers 160–375 hFE - allows precise base drive optimization across production lots and temperature ranges. |
| Low VCE(sat) | ≤ 0.6 V at IC = 2 A - minimizes conduction loss and self-heating in battery-powered systems with tight voltage margins. |
Applications
| Linear Voltage Regulators | MOSFET Drivers |
|---|---|
Use Scenario: Pass transistor in adjustable LDOs powering infotainment microcontrollers or sensor signal chains. IC Role / Device Role / Timing Role: NPN series pass element regulating output voltage via emitter-follower configuration with feedback loop compensation. Use Value: Low VCE(sat) maintains ≥1.2 V dropout margin at 2 A load; AEC-Q101 qualification ensures stable operation across -40 °C to +125 °C ambient. |
Use Scenario: Gate driver stage for N-channel power MOSFETs in 12 V automotive DC-DC converters. IC Role / Device Role / Timing Role: Medium-power NPN switch rapidly charging/discharging MOSFET gate capacitance during PWM transitions. Use Value: 170 MHz fT and 22 pF Cc support clean 100 kHz–500 kHz gate drive with minimal propagation delay and overshoot. |
| Low-Side Switches | Battery-Driven Devices |
Use Scenario: Load switch controlling HVAC blower motors or seat heater elements in 12 V vehicle systems. IC Role / Device Role / Timing Role: High-current NPN switch placed between load and ground, driven by MCU GPIO through current-limiting resistor. Use Value: 3 A peak current handles motor inrush; exposed collector pad sustains 1.1 W dissipation during continuous 2 A operation at 85 °C ambient. |
Use Scenario: Power path control in portable diagnostic tools or telematics dongles powered by vehicle OBD-II port. IC Role / Device Role / Timing Role: Reverse-polarity and overcurrent protected main power switch isolating downstream circuitry from battery transients. Use Value: 20 V VCEO withstands load-dump spikes up to 25 V; 5 V VEB0 prevents base-emitter junction breakdown during reverse connection events. |
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 |
|---|---|---|---|
| BC817-25,215 (Nexperia) | SOT-23 package; lower IC = 500 mA; hFE = 160–400; no AEC-Q101 qualification. | Not suitable for automotive under-hood use; limited to consumer or industrial PCBs with <500 mA loads. | Select when board space permits SOT-23 and automotive qualification is unnecessary. |
| ZTX653STZ (Diodes Inc.) | SOT-223 package; IC = 3 A; VCEO = 60 V; hFE = 100–300; AEC-Q101 qualified; larger footprint (6.7 × 3.7 mm). | Higher voltage headroom but 3× larger PCB area; thermal resistance 60 K/W on 1 cm² pad - better for >2 A continuous loads. | Select when 60 V rating or >2 A continuous current is required, and board space allows SOT-223. |
Compared with BC817-25,215, BC68-25PA-QX provides 4× higher current capacity and automotive qualification in half the footprint of ZTX653STZ, making it optimal for space-constrained, thermally demanding automotive low-side switches requiring 2 A capability.
Availability
BC68-25PA-QX is available at Aetrix Electronics and suitable for automotive power management, MOSFET gate driving, and battery-powered load switching requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.
Supply support for BC68-25PA-QX 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-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BC68PA-Q series targets automotive and industrial power control applications, delivering medium-power NPN transistors with enhanced thermal performance, AEC-Q101 validation, and ultra-compact DFN packaging for next-generation ECUs and power modules.
FAQ
What is the maximum allowable base current for BC68-25PA-QX?
The absolute maximum base current (IB) is 0.4 A under DC conditions, and the peak base current (IBM) is also rated at 0.4 A for pulses ≤1 ms. Exceeding these limits risks permanent degradation of hFE or bond wire failure. For reliable 2 A collector switching, design base drive to deliver 200 mA with appropriate current-limiting resistor and ensure thermal derating above 25 °C ambient.
Can BC68-25PA-QX replace BC817-25 in existing designs?
No - BC68-25PA-QX uses SOT1061 (DFN2020-3), while BC817-25 uses SOT-23. The packages are physically incompatible, and BC68-25PA-QX has higher current capability (2 A vs. 0.5 A) and different pinout (B-E-C vs. E-B-C). A redesign of footprint, thermal pad, and drive network is required; it is not a drop-in replacement.
How does the exposed collector pad affect PCB layout?
The exposed collector pad on the underside of the SOT1061 package must be soldered to a dedicated, thermally optimized copper area - minimum 1 cm² on 4-layer FR4 for rated 1.65 W dissipation. Use multiple thermal vias (≥6, 0.3 mm diameter) connecting to inner ground/power planes. Avoid routing signal traces under the pad and ensure solder mask opening matches pad dimensions exactly per Nexperia's reflow footprint (Fig. 12).
Is BC68-25PA-QX suitable for linear amplifier applications?
Yes - its specified hFE range (160–375), low VCE(sat), and stable characteristics across -55 °C to +150 °C make it viable for Class-A audio preamplifiers or sensor signal conditioning stages. However, linear operation demands strict thermal management: at 1 W dissipation, junction temperature rises ~76 °C above ambient, so ambient must remain ≤74 °C to stay within 150 °C Tj limit.
BC68-25PA-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 3-PowerUDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 2 A
- Voltage - Collector Emitter Breakdown (Max):
- 20 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 200mA, 2A
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 160 @ 500mA, 1V
- Power - Max:
- 420 mW
- Frequency - Transition:
- 170MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 3-HUSON (2x2)
BC68-25PA-QX FAQ
1.How can I place an order for BC68-25PA-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC68-25PA-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 BC68-25PA-QX reliable?
The price and inventory of BC68-25PA-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC68-25PA-QX is usually 5 days.
3.What payment methods are accepted for BC68-25PA-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC68-25PA-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC68-25PA-QX?
BC68-25PA-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC68-25PA-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 BC68-25PA-QX?
For technical support, including BC68-25PA-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC68-25PA-QX requirements.
6.How does Aetrix verify that BC68-25PA-QX is sourced from the original manufacturer or authorized distributors?
All BC68-25PA-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 BC68-25PA-QX meets industry standards.
7.What is the process for return or replacement of BC68-25PA-QX?
All BC68-25PA-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC68-25PA-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 BC68-25PA-QX part is unused and in its original packaging.
Return procedure for BC68-25PA-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC68-25PA-QX Tags
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