Nexperia USA Inc. BCW68HR

Overview

BCW68HR from Nexperia is a PNP general-purpose bipolar junction transistor in SOT23 (TO-236AB) package, rated for −45 V V_CEO, −800 mA continuous collector current, and AEC-Q101 qualified for automotive use. It delivers DC current gain (h_FE) of 250–600 at −100 mA/−1 V, with V_CE(sat) ≤ −450 mV at −500 mA/−50 mA drive, enabling reliable low-side switching in power management and signal amplification circuits.

For engineers reviewing the BCW68HR datasheet, BCW68HR pinout, BCW68HR application, or BCW68HR equivalent, this device is selected for cost-sensitive, space-constrained designs requiring robust PNP switching in automotive body electronics, industrial sensor interfaces, and consumer power control where thermal derating on FR4 PCBs and pulsed current capability up to 1 A must be validated.

Technical Context

The BCW68HR operates as a silicon PNP BJT with base-controlled current amplification, optimized for linear amplification and saturated-switching modes. Its electrical behavior is defined by V_CE = −1 V, I_C = −100 mA test conditions for h_FE, and pulsed operation (t_p ≤ 300 μs, duty ≤ 0.02) enables transient overcurrent handling beyond its DC rating.

Thermal performance is specified with R_th(j-a) = 500 K/W on standard FR4 PCB, and junction temperature is limited to 150 °C. Absolute maximum ratings include −50 V V_CBO, −5 V V_EBO, and 250 mW P_tot at T_amb ≤ 25 °C - all compliant with IEC 60134 limiting values.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) surface-mount plastic package: 3-pin, small outline, 1.3 mm × 2.9 mm footprint, 1.1 mm height, designed for reflow soldering per IPC-7095 guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP general-purpose transistor applications.

Compared with BCW68G and MMBT3906, BCW68HR provides the highest guaranteed h_FE and full automotive qualification - making it optimal for safety-relevant, high-reliability PNP switching where gain consistency and environmental robustness are mandatory.

Availability

BCW68HR is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer power management, and medical diagnostic equipment requiring stable component supply and long-term manufacturability.

Supply support for BCW68HR 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 energy-efficient solutions.

The BCW68 series belongs to Nexperia's general-purpose transistor product line, engineered for cost-effective, space-efficient switching and amplification in automotive, industrial, and consumer systems demanding AEC-Q101 compliance and robust thermal performance.

FAQ

Is BCW68HR pin-compatible with BCW66F/G/H?

No - BCW66F/G/H are NPN complements, not pin-compatible equivalents. While both series share the SOT23 package, their pinouts are mirror-inverted: BCW66 has Collector–Base–Emitter (1–2–3), whereas BCW68HR uses Base–Emitter–Collector (1–2–3). Direct substitution would reverse polarity and cause circuit failure.

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is −100 mA, per Table 8 limiting values. For reliable continuous operation, base current should be limited to ≤ −10 mA to maintain h_FE stability and avoid thermal runaway; pulsed base current may reach −200 mA for t_p ≤ 1 ms with duty cycle ≤ 0.02.

Can BCW68HR replace BC807 in existing designs?

Only with circuit validation - BC807 is also a PNP SOT23 transistor but has different h_FE (100–630), V_CEO (−45 V), and V_CE(sat) (≤ −700 mV at −500 mA). BCW68HR's lower V_CE(sat) improves efficiency, but its tighter h_FE range (250–600 vs. BC807's wider spread) may alter bias point stability in linear applications.

Does BCW68HR require a heatsink in typical SOT23 mounting?

No - at ≤ 250 mW dissipation on standard FR4 PCB, the 500 K/W R_th(j-a) yields ≤ 125 °C junction rise above ambient, staying within the 150 °C T_j limit at T_amb ≤ 25 °C. Heatsinking is unnecessary unless operating continuously near 250 mW in ambient > 50 °C or with non-standard board layout (e.g., minimal copper area).