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Nexperia USA Inc. BCW68FR
- Part No.:
- BCW68FR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BCW68FR.pdf
- Description:
- TRANS PNP 45V 0.8A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,570
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Product details
Overview
BCW68FR from Nexperia is a PNP general-purpose bipolar junction transistor in SOT23 (TO-236AB) package, rated for −45 V VCEO, −800 mA IC, and AEC-Q101 qualified for automotive use. It delivers hFE = 250–600 at IC = −100 mA, VCE = −1 V, and exhibits VCE(sat) ≤ −450 mV at IC = −500 mA, IB = −50 mA - enabling robust low-side switching in power management and signal amplification circuits.
For engineers reviewing the BCW68FR datasheet, BCW68FR pinout, BCW68FR application, or BCW68FR equivalent, key selection criteria include its AEC-Q101 qualification, SOT23 footprint compatibility, −45 V breakdown rating, DC current gain spread across BCW68F/G/H variants, and thermal resistance of 500 K/W on FR4 PCB - all critical for automotive body control modules, industrial sensor interfaces, and space-constrained linear regulators.
Technical Context
This PNP BJT operates in active, saturation, and cutoff regions with defined absolute maximum ratings: −45 V VCEO, −800 mA continuous IC, and 250 mW Ptot at Tamb ≤ 25 °C. Its pulsed ICM reaches −1 A (tp ≤ 1 ms), supporting transient load switching.
Electrical behavior is characterized across temperature (−55 °C to +150 °C) and bias conditions: hFE varies with IC and Tamb, while VBE(sat) remains ≤ −1.25 V and Cc is 5 pF at VCB = −10 V - confirming suitability for medium-speed switching (<80 MHz fT) and analog amplification where gain stability and low capacitance matter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V - Maximum safe collector-emitter voltage with base open; defines upper rail limit in high-side switch configurations. |
| IC | −800 mA - Continuous collector current capacity; supports driving LEDs, relays, or logic-level MOSFET gates in compact designs. |
| hFE | 250–600 @ IC = −100 mA - High DC current gain enables low-base-drive requirements, reducing MCU GPIO loading. |
| VCE(sat) | ≤ −450 mV @ IC = −500 mA - Low saturation voltage minimizes conduction loss and self-heating in switching applications. |
| Rth(j-a) | 500 K/W - Thermal resistance on FR4 PCB dictates derating above 25 °C ambient; requires layout attention for >150 mW dissipation. |
| fT | 80 MHz - Transition frequency confirms usability in audio preamps and sub-MHz digital signal routing, not RF. |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronics, permitting use in under-hood and cabin control units. |
Pinout & Package
SOT23 (TO-236AB) surface-mount plastic package: 3-terminal, small-outline, standard footprint compatible with automated assembly and reflow soldering per IPC-7351.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; reverse-biased to turn on PNP device; requires current-sinking drive from MCU or logic gate. |
| 2 | Emitter (E) | Common reference node; connected to higher potential (e.g., VCC) in low-side switch topology. |
| 3 | Collector (C) | Output terminal; sinks load current to ground when saturated; polarity must match PNP configuration. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - reduces qualification effort for Tier-1 suppliers. |
| High hFE range (250–600) | Enables single-stage amplification or low-drive switching without Darlington pairing - saves board area and cost. |
| Low VCE(sat) (≤ −450 mV) | Reduces power loss in saturated operation, improving efficiency in battery-powered or thermally constrained systems. |
| SOT23 footprint | Standardized 3-pin SMD package ensures compatibility with existing pick-and-place machines and reflow profiles. |
| −55 °C to +150 °C operating range | Supports deployment in engine control units, industrial PLCs, and outdoor equipment without external thermal management. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving resistive loads (e.g., door lock solenoids, HVAC actuators) from 12 V vehicle battery via microcontroller GPIO. IC Role / Device Role / Timing Role: PNP low-side switch providing current sinking path with fast turn-on/turn-off controlled by PWM or digital logic. Use Value: AEC-Q101 qualification ensures longevity under vibration and thermal cycling; −45 V rating accommodates load dump transients up to ISO 7637-2 Pulse 5a. |
Use Scenario: Amplifying low-level analog outputs from RTD or thermistor bridges in programmable logic controllers. IC Role / Device Role / Timing Role: Linear-mode PNP amplifier stage configured as emitter follower for impedance matching and noise rejection. Use Value: Stable hFE over −40 °C to +85 °C ensures consistent gain calibration; low Cc (5 pF) preserves signal integrity at <100 kHz bandwidth. |
| Consumer Power Management | Medical Diagnostic Equipment Interface |
Use Scenario: Enabling/disabling auxiliary rails (e.g., USB-C VCONN, display backlight) in portable ultrasound or patient monitors. IC Role / Device Role / Timing Role: Discrete PNP pass element used in simple LDO-like regulator or enable switch with soft-start via RC base network. Use Value: VCE(sat) ≤ −450 mV limits dropout voltage and heat generation; SOT23 size fits tight layout constraints near connectors. |
Use Scenario: Isolating microcontroller I/O from high-voltage analog front-end stages (e.g., ECG lead-off detection circuitry). IC Role / Device Role / Timing Role: Level-shifting and current-buffering interface between 3.3 V logic and ±5 V analog signal paths. Use Value: −5 V VEBO rating prevents damage during analog input overvoltage events; wide Tamb range supports sterilization cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCW68G | hFE = 160–400 (vs. BCW68FR's 250–600); identical VCEO, IC, package, and AEC-Q101 status. | Lower gain reduces base drive margin in high-current switching but improves consistency across production lots. | Select BCW68G when tighter hFE distribution is preferred over peak gain, especially in volume-manufactured automotive sensors. |
| MMBT3906 | Non-AEC-Q101; hFE = 100–300; same SOT23 package and −40 V VCEO, but lower IC (−200 mA) and Ptot (350 mW). | Lacks automotive qualification and current capability; suitable only for non-safety-critical consumer or prototyping use. | Choose MMBT3906 only for cost-sensitive, non-automotive prototypes where AEC compliance and −800 mA rating are unnecessary. |
Compared with BCW68G and MMBT3906, BCW68FR offers the highest guaranteed hFE and full automotive qualification - making it optimal for production-grade automotive switches and industrial amplifiers requiring both performance headroom and supply-chain assurance.
Availability
BCW68FR is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, consumer power management subsystems, and medical diagnostic equipment requiring stable component supply and long-term manufacturability.
Supply support for BCW68FR 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 components and advanced packaging.
The BCW68 series belongs to Nexperia's general-purpose transistor product line, engineered specifically for cost-effective, AEC-Q101-compliant switching and amplification in space-constrained automotive and industrial systems.
FAQ
Is BCW68FR pin-compatible with BCW68G and BCW68H?
Yes - all BCW68 variants share identical SOT23 (TO-236AB) pinout: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. Mechanical and electrical pin assignments are fully interchangeable; only hFE ranges differ across F/G/H suffixes.
What is the maximum allowable junction temperature for BCW68FR?
The absolute maximum junction temperature (Tj) is +150 °C, as specified in Table 5 of the datasheet. Operation beyond this limit risks permanent degradation; derating is required above 25 °C ambient per Figure 1's 250 mW → 0 mW linear power curve.
Can BCW68FR be used in linear amplifier configurations?
Yes - its specified hFE stability across IC (Figures 3–5) and low VCE(sat) support Class-A and emitter-follower topologies. However, thermal resistance (500 K/W) necessitates careful power dissipation management to avoid thermal runaway at >100 mW.
Does BCW68FR require special PCB layout considerations for thermal performance?
Yes - the 500 K/W Rth(j-a) assumes standard FR4 PCB with single-sided copper and tin-plated traces. To improve thermal dissipation, increase copper area on the emitter pad, use thermal vias beneath the package, and avoid enclosing the device in sealed enclosures without airflow.
BCW68FR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- PNP
- Current - Collector (Ic) (Max):
- 800 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 450mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 5µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 100mA, 1V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 80MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BCW68FR FAQ
1.How can I place an order for BCW68FR through Aetrix?
Please submit a Request for Quotation (RFQ) for BCW68FR 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 BCW68FR reliable?
The price and inventory of BCW68FR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCW68FR is usually 5 days.
3.What payment methods are accepted for BCW68FR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCW68FR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCW68FR?
BCW68FR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCW68FR 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 BCW68FR?
For technical support, including BCW68FR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCW68FR requirements.
6.How does Aetrix verify that BCW68FR is sourced from the original manufacturer or authorized distributors?
All BCW68FR 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 BCW68FR meets industry standards.
7.What is the process for return or replacement of BCW68FR?
All BCW68FR units undergo pre-shipment inspection (PSI). If there is an issue with BCW68FR, 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 BCW68FR part is unused and in its original packaging.
Return procedure for BCW68FR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCW68FR Tags
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