Nexperia USA Inc. BCW61B,215

Overview

BCW61B,215 from Nexperia is a PNP general-purpose bipolar junction transistor in SOT23 package, rated for −32 V V_CEO, −100 mA I_C, and 250 mW P_tot, with h_FE = 30–310 (IC = −2 mA), used in low-power switching and linear amplification circuits in consumer and industrial control modules.

For engineers reviewing the BCW61B,215 datasheet, BCW61B,215 pinout, BCW61B,215 application, or BCW61B,215 equivalent, key selection criteria include verified DC current gain at multiple bias points, saturation voltage under defined drive conditions, thermal resistance on FR4, and compatibility with BCW60-series NPN complements in push-pull configurations.

Technical Context

This PNP BJT operates in active, saturation, and cutoff regions with fixed polarity-emitter is common reference node in typical common-emitter amplifier or switch topologies. Its low-voltage, low-current rating targets signal-level functions rather than power handling.

Thermal performance is defined for FR4 PCB mounting (R_{th j-a} = 500 K/W); electrical characteristics are specified at T_amb = 25 °C with pulse testing (t_p ≤ 300 μs, duty δ ≤ 0.02) for dynamic parameters including f_T = 100 MHz and C_c = 4.5 pF.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-lead, 1.3 mm × 2.9 mm footprint, 1.1 mm height, FR4-compatible thermal profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCW61C,215, the BCW61B,215 offers lower minimum hFE for more predictable saturation behavior under marginal drive; versus MMBT3906LT1G, it trades voltage headroom and thermal margin for tighter gain binning and legacy design continuity.

Availability

BCW61B,215 is available at Aetrix Electronics and suitable for LED driver circuits, level-shifting interfaces, audio signal amplifiers, and power supply sequencing requiring stable component supply across production lifecycles.

Supply support for BCW61B,215 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP's Standard Products division in 2017 and focused on automotive, industrial, computing, and consumer markets.

The BCW61 series belongs to Nexperia's general-purpose bipolar transistor portfolio, designed specifically for cost-sensitive, space-constrained signal switching and amplification in high-volume consumer and industrial electronics.

FAQ

Is BCW61B,215 pin-compatible with BCW60 series NPN transistors?

Yes-BCW61B,215 (PNP) and BCW60 (NPN) share identical SOT23 pinout: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. This enables direct complementary pairing in push-pull or differential amplifier designs without layout changes.

What is the maximum allowable junction temperature for continuous operation?

The absolute maximum junction temperature (T_j) is 150 °C. With R_{th j-a} = 500 K/W and P_tot = 250 mW, junction temperature rise is 125 K above ambient-so continuous operation is limited to T_amb ≤ 25 °C unless derated or heatsinked.

Does BCW61B,215 support pulsed operation beyond its DC current rating?

Yes-peak collector current (I_CM) is rated at −200 mA under pulse conditions (t_p ≤ 300 μs, duty cycle δ ≤ 0.02), enabling short-duration surge handling in relay drivers or flash LED circuits without thermal runaway.

How does the marking code 'BB*' identify this device?

The marking 'BB*' on the SOT23 package identifies the BCW61B variant ('BB') and manufacturing location ('*' = 'p' for Hong Kong or 't' for Malaysia). This matches Nexperia's standardized SOT23 marking convention per datasheet M3D088.