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Nexperia USA Inc. BCW68GR
- Part No.:
- BCW68GR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BCW68GR.pdf
- Description:
- TRANS PNP 45V 0.8A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,738
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Product details
Overview
BCW68GR from Nexperia is a PNP general-purpose bipolar junction transistor in SOT23 (TO-236AB) package, rated for −45 V VCEO, −800 mA IC, and 250–600 hFE (depending on variant), with AEC-Q101 qualification for automotive use. It functions as a low-voltage switching or linear amplification device in power management, signal conditioning, and load control circuits.
For engineers reviewing the BCW68GR datasheet, BCW68GR pinout, BCW68GR application, or BCW68GR equivalent, this page delivers verified electrical parameters, thermal derating behavior, saturation voltage performance at −500 mA, and direct-fit alternatives for automotive-grade discrete PNP replacement.
Technical Context
This transistor operates in active, saturation, and cutoff regions with DC current gain specified across three variants (F/G/H) at VCE = −1 V and IC = −100 mA, supporting stable biasing in emitter-follower and common-emitter configurations. Its pulsed ICM of −1 A enables short-duration surge handling in relay drivers and LED dimming circuits.
Thermal resistance Rth(j-a) is 500 K/W on FR4 PCB, and power dissipation is derated linearly above 25 °C ambient - critical for compact automotive modules where board-level heat spreading is limited. The −5 V VEBO rating supports robust base drive tolerance in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V: Maximum safe collector-emitter voltage with open base; defines upper rail limit in high-side switch designs. |
| IC | −800 mA continuous: Sustained load current capability without thermal runaway under 25 °C ambient and proper PCB copper area. |
| hFE | 250–600 (BCW68H): Confirmed DC current gain at −100 mA collector current; ensures reliable base drive sizing for low-power switching. |
| VCE(sat) | −450 mV max at IC = −500 mA / IB = −50 mA: Low saturation voltage minimizes conduction loss in battery-powered load switches. |
| Ptot | 250 mW at Tamb ≤ 25 °C: Total power dissipation limit on standard FR4 PCB; requires derating above 25 °C per Figure 1. |
| Rth(j-a) | 500 K/W: Junction-to-ambient thermal resistance on single-sided FR4; informs heatsinking requirements for sustained operation. |
| AEC-Q101 | Qualified: Meets stress test requirements for discrete semiconductors in automotive applications including temperature cycling and HTRB. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package with 3 leads, 1.9 mm × 1.1 mm footprint, 0.45 mm profile, and tin-plated terminations compatible with reflow and wave soldering per Figures 16–17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB ≤ −100 mA (continuous) or −200 mA (pulse). |
| 2 | Emitter (E) | Common reference terminal for PNP operation; connected to higher potential rail in high-side switch topologies. |
| 3 | Collector (C) | Output current path; sinks load current to ground or lower-potential node when B-E junction is forward-biased. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| High hFE range (250–600) | Reduces required base drive current by up to 2× vs. standard gain transistors, lowering MCU GPIO loading and driver stage complexity. |
| Low VCE(sat) (−450 mV @ −500 mA) | Minimizes power loss in saturated switching mode, enabling efficient 5 V/3.3 V logic-driven load control without external MOSFETs. |
| −50 V VCBO rating | Provides 5 V margin above VCEO rating, improving immunity to inductive kickback in relay and solenoid driver circuits. |
| SOT23 package compatibility | Standardized footprint allows drop-in replacement with BCW66, BC807, or MMBT3906 in existing layouts without redesign. |
Applications
| Automotive Door Module | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Driving window lift motor relays and LED status indicators in door control units. IC Role / Device Role / Timing Role: PNP high-side switch controlling 12 V loads with logic-level enable from microcontroller GPIO. Use Value: −45 V VCEO withstands load dump transients; AEC-Q101 ensures reliability over 15-year vehicle lifetime. |
Use Scenario: Level-shifting and buffering analog sensor outputs (e.g., thermistor, potentiometer) into ADC inputs. IC Role / Device Role / Timing Role: Emitter-follower amplifier providing low-output-impedance signal conditioning without inversion. Use Value: Stable hFE across −55 °C to +150 °C enables accurate gain matching in wide-temperature industrial enclosures. |
| Consumer Power Management | Medical Diagnostic Equipment |
|
Use Scenario: Enabling/disabling auxiliary rails (e.g., USB VBUS, display backlight) in portable medical monitors. IC Role / Device Role / Timing Role: Low-power PNP switch activated by system controller to gate power to peripheral subsystems. Use Value: −450 mV VCE(sat) limits dropout to <1% at 500 mA, preserving battery runtime and minimizing self-heating. |
Use Scenario: Isolating patient-connected analog front-end stages from digital control logic in ECG/EEG units. IC Role / Device Role / Timing Role: Signal-level PNP switch breaking ground paths during fault conditions to meet IEC 60601 creepage requirements. Use Value: −5 V VEBO and low leakage (<20 nA ICBO) ensure minimal leakage current in safety-critical isolation barriers. |
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 |
|---|---|---|---|
| BC807-40 | Same SOT23 package; hFE = 250–630 at −100 mA but VCEO = −45 V and Ptot = 310 mW. | Higher power dissipation margin supports longer duty cycles in fan control; not AEC-Q101 qualified. | Select when automotive qualification is unnecessary and thermal headroom is prioritized over qualification compliance. |
| MMBT3906 | Lower VCEO = −40 V, hFE = 100–300, and no AEC-Q101 qualification; otherwise identical SOT23 pinout. | Not suitable for 12 V automotive systems with load dump; acceptable for consumer 5 V logic-level switching. | Choose only for cost-sensitive non-automotive designs where −40 V rating suffices and qualification is not required. |
Compared with BC807-40 and MMBT3906, BCW68GR uniquely combines AEC-Q101 qualification, −45 V rating, and guaranteed hFE ≥250 in a standard SOT23 footprint - making it the only option qualified for automotive body electronics without derating or layout change.
Availability
BCW68GR is available at Aetrix Electronics and suitable for automotive door modules, industrial sensor interfaces, consumer power management, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BCW68GR 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 technologies.
The BCW68 series belongs to Nexperia's general-purpose bipolar transistor product line, engineered specifically for robust, cost-effective switching and amplification in automotive and industrial environments where AEC-Q101 compliance and thermal stability are mandatory.
FAQ
Is BCW68GR pin-compatible with BCW66GR?
Yes - BCW68GR (PNP) and BCW66GR (NPN) share identical SOT23 pinout (1=Base, 2=Emitter, 3=Collector), enabling complementary pair usage in push-pull output stages and differential amplifiers without layout changes.
What is the maximum allowable base current for continuous operation?
The absolute maximum continuous base current is −100 mA per Table 8; exceeding this risks metallization failure. For reliable design, limit IB to ≤ −10 mA at IC = −100 mA (hFE ≥250) or ≤ −50 mA at IC = −500 mA to maintain saturation with margin.
Does BCW68GR support pulsed operation beyond its DC ratings?
Yes - peak collector current ICM is −1 A for pulses ≤1 ms (duty cycle ≤0.02), enabling brief surge handling in relay coil snubbing or LED strobe circuits, provided average power remains within Ptot derating limits.
How does thermal derating affect usable current at 85 °C ambient?
At Tamb = 85 °C, Ptot derates to 125 mW (50% of 250 mW). With VCE(sat) ≈ −400 mV, maximum sustainable IC drops to ~312 mA - confirmed by Figure 1's linear derating curve and consistent with Rth(j-a) = 500 K/W.
BCW68GR 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:
- 160 @ 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
BCW68GR FAQ
1.How can I place an order for BCW68GR through Aetrix?
Please submit a Request for Quotation (RFQ) for BCW68GR 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 BCW68GR reliable?
The price and inventory of BCW68GR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCW68GR is usually 5 days.
3.What payment methods are accepted for BCW68GR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCW68GR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCW68GR?
BCW68GR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCW68GR 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 BCW68GR?
For technical support, including BCW68GR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCW68GR requirements.
6.How does Aetrix verify that BCW68GR is sourced from the original manufacturer or authorized distributors?
All BCW68GR 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 BCW68GR meets industry standards.
7.What is the process for return or replacement of BCW68GR?
All BCW68GR units undergo pre-shipment inspection (PSI). If there is an issue with BCW68GR, 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 BCW68GR part is unused and in its original packaging.
Return procedure for BCW68GR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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