Nexperia USA Inc. BCV61B,215

Overview

BCV61B,215 from Nexperia is an NPN general-purpose double transistor in SOT143B package, configured as a matched pair of monolithic NPN transistors sharing a common base connection (Pin 1). It supports ≤30 V V_CEO, ≤100 mA I_C, and delivers h_FE = 200–450 at I_C = 2 mA, V_CE = 5 V. It is used in precision current mirrors and temperature-stable bias networks where transistor matching minimizes thermal drift.

For engineers reviewing the BCV61B,215 datasheet, BCV61B,215 pinout, BCV61B,215 application, or BCV61B,215 equivalent, this device is selected for dual-transistor functions requiring matched h_FE, low V_CEsat (≤250 mV @ 10 mA), and tight IC1/IE2 current ratio (0.7–1.3) across −55 °C to +150 °C ambient.

Technical Context

The BCV61B,215 integrates two electrically isolated NPN transistors on a single die with shared base terminal (Pin 1), enabling precise current mirroring without external matching components. Its matched h_FE range (200–450) and guaranteed current ratio (IC1/IE2 = 0.7–1.3) are specified at both 25 °C and 150 °C, confirming thermal stability.

It operates with V_BE = 580–700 mV at I_C = 2 mA and exhibits low noise figure (≤10 dB @ 1 kHz), making it suitable for analog signal conditioning stages where gain consistency and low drift are critical. The device lacks emitter degeneration resistors, allowing direct integration into high-precision active loads.

Key Specifications

Pinout & Package

SOT143B plastic surface-mount package (3.0 × 1.4 × 0.95 mm); 4-terminal lead frame with gull-wing leads, optimized for reflow soldering on FR4 PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-NPN matched transistor applications.

Compared with BCV61A,215 and BCV61C,215, the BCV61B,215 offers mid-range h_FE (200–450) that balances gain stability and current drive capability - ideal for general-purpose matched-pair applications where neither extreme low nor high β is required.

Availability

BCV61B,215 is available at Aetrix Electronics and suitable for current mirror circuits, temperature-stable bias networks, and active load amplifiers requiring stable component supply and traceable sourcing.

Supply support for BCV61B,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 semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency and miniaturization.

The BCV61 series belongs to Nexperia's general-purpose bipolar transistor product line, designed specifically for precision analog functions requiring monolithically matched pairs in compact SMD packages.

FAQ

What is the function of Pin 1 on the BCV61B,215?

Pin 1 serves as the common base terminal for both integrated NPN transistors (TR1 and TR2). This shared base enables synchronized biasing and ensures identical base-emitter voltage conditions, which is essential for achieving tight current matching in mirror configurations without external compensation.

Can BCV61B,215 replace discrete BC847BL transistors in a current mirror?

No - while BC847BL offers similar single-transistor specs, it lacks monolithic matching and thermal coupling. BCV61B,215 provides guaranteed IC1/IE2 ratio (0.7–1.3) and matched h_FE across temperature, whereas discrete BC847BL pairs exhibit uncontrolled gain spread and thermal gradient-induced errors.

Is emitter degeneration required for stable operation?

No - the BCV61B,215 is specified without internal emitter resistors and performs optimally in standard current mirror topologies. Adding external emitter resistors degrades matching accuracy and increases V_CE headroom requirements; its design assumes direct emitter connections for maximum matching fidelity.

What is the maximum allowable power dissipation per transistor?

Each transistor is rated for 250 mW total power dissipation at T_amb ≤25 °C on FR4 PCB. At elevated ambient temperatures, derating applies: R_th(j-a) = 500 K/W means junction temperature rises ~125 K per 250 mW, limiting safe continuous operation to ~100 mW at 75 °C ambient.