Nexperia USA Inc. BCX70H,215

Overview

BCX70H,215 from Nexperia is an NPN general-purpose bipolar junction transistor in SOT23 package, rated for 45 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 180–310 at I_C = 2 mA, used in low-voltage switching and small-signal amplification circuits in consumer and industrial control modules.

For engineers reviewing the BCX70H,215 datasheet, BCX70H,215 pinout, BCX70H,215 application, or BCX70H,215 equivalent, key selection criteria include verified h_FE range at multiple bias points, V_CE(sat) ≤ 350 mV at I_C = 10 mA, thermal resistance R_th(j-a) = 500 K/W on FR4, and SOT23 footprint compatibility with automated assembly.

Technical Context

This device operates as a low-power NPN BJT optimized for linear amplification and digital switching in ambient temperatures from −65 °C to +150 °C. Its h_FE is specified across three operating conditions-10 μA, 2 mA, and 50 mA collector current-enabling stable gain behavior in both micro-power sensor interfaces and moderate-drive logic buffers.

Thermal performance is defined with R_th(j-a) = 500 K/W under standard FR4 mounting, and its 250 mW total power dissipation limit aligns with JEDEC-compliant SOT23 derating curves. The 1.7 pF collector capacitance and 100–250 MHz f_T support audio-frequency and low-MHz signal handling without parasitic oscillation risk.

Key Specifications

Pinout & Package

SOT23 plastic surface-mounted package (TO-236AB), 3-terminal, 1.3 mm × 2.9 mm footprint, 1.1 mm height, compatible with standard pick-and-place and reflow processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCX70H,215, BC847B,215 offers higher and tighter h_FE for precision analog use, while MMBT3904LT1G trades gain consistency for broader current handling-both retain SOT23 compatibility but differ in gain stability and thermal derating profiles.

Availability

BCX70H,215 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, low-power sensor interfaces, and industrial control logic requiring stable component supply across automotive-grade temperature ranges and long-lifecycle programs.

Supply support for BCX70H,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, with manufacturing and R&D centers across Asia, Europe, and the Americas.

The BCX70 series belongs to Nexperia's general-purpose bipolar transistor product line, engineered for reliability and consistency in cost-sensitive, high-volume consumer and industrial control applications where predictable DC gain and low saturation voltage are critical.

FAQ

Is BCX70H,215 pin-compatible with BCX70G, BCX70J, or BCX70K?

Yes-BCX70H,215 shares identical SOT23 pinout (base-emitter-collector on pins 1–2–3) and mechanical footprint with all BCX70 series variants. Only h_FE binning differs: BCX70H guarantees 180–310 at I_C = 2 mA, whereas BCX70G has no h_FE spec at that condition, BCX70J is 250–460, and BCX70K is 380–630.

What is the maximum allowable PCB trace width for the collector pad in high-reliability designs?

Per Nexperia's SOT23 thermal guidelines, the collector pad (pin 3) should be connected to a minimum 1.5 mm² copper pour on the top layer, with at least two 0.3 mm diameter thermal vias to inner ground planes. This maintains junction temperature ≤125 °C at 100 mA DC with 25 °C ambient, per R_th(j-a) = 500 K/W specification.

Does BCX70H,215 support pulsed operation beyond its 100 mA DC rating?

Yes-its I_CM (peak collector current) is rated at 200 mA for pulse widths ≤300 μs and duty cycle ≤2%, per IEC 60134. This allows brief surge handling in relay drivers or solenoid interface circuits, provided average power remains within 250 mW and thermal mass prevents junction overheating.

Can BCX70H,215 replace BCX71H in complementary pair configurations?

No-BCX71H is the PNP complement to BCX70H and uses opposite polarity. Substituting BCX70H (NPN) for BCX71H (PNP) would invert circuit function and likely cause latch-up or incorrect biasing. For complementary operation, always pair BCX70H with BCX71H, which shares identical SOT23 outline and matching h_FE binning.