Nexperia USA Inc. BC817,215

Overview

BC817,215 from Nexperia is a 45 V, 500 mA NPN general-purpose bipolar junction transistor in SOT23 (TO-236AB) package, designed for low-voltage switching and linear amplification in consumer and industrial PCBs. It delivers DC current gain (h_FE) of 100–600 at V_CE = 1 V, I_C = 100 mA, with V_CE(sat) ≤ 700 mV at I_C = 500 mA / I_B = 50 mA, and operates across −65 °C to +150 °C ambient.

For engineers reviewing the BC817,215 datasheet, BC817,215 pinout, BC817,215 application, or BC817,215 equivalent, this part supports cost-sensitive discrete logic-level switching, signal buffering, and low-power load control where thermal derating on FR4 PCBs and consistent h_FE spread across selection grades (−16/−25/−40) are critical design factors.

Technical Context

The BC817,215 operates as a standard NPN BJT with base-controlled current amplification, requiring external biasing networks for stable DC operation. Its h_FE range (100–600) enables flexible gain selection across variants, while its 45 V V_CEO and 500 mA I_C rating suit 24 V and lower rail applications including relay drivers and LED current sinks.

Thermal performance is defined for two mounting conditions: 500 K/W R_th(j-a) on standard FR4 footprint and 362 K/W with 1 cm² collector pad. Transient thermal impedance curves confirm suitability for pulsed loads up to 1 A (t_p ≤ 1 ms), with V_BE exhibiting −2 mV/K temperature coefficient.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package with 3 leads, 1.3 mm profile, and standard 0.95 mm lead pitch; optimized for reflow soldering per IPC-7095 guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC817,215, BC847B,215 trades current capacity for tighter gain control in signal paths, while MMBT3904LT1G offers better production consistency at half the current rating-neither replaces BC817,215's 500 mA/45 V combination in power-switching roles.

Availability

BC817,215 is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, DC-DC converter feedback loops, and audio signal amplification requiring stable component supply across industrial, consumer, and embedded design cycles.

Supply support for BC817,215 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 focused on high-volume, high-reliability discrete and logic components, with leadership in automotive-qualified and industrial-grade standard parts.

The BC817 series belongs to Nexperia's general-purpose transistor product line, engineered for cost-effective, thermally robust switching and amplification in space-constrained PCBs across non-automotive industrial and consumer applications.

FAQ

What is the maximum allowable base current for BC817,215?

The absolute maximum peak base current is 200 mA for single pulses ≤1 ms at 25 °C ambient. For continuous operation, base current must be limited to maintain I_C ≤ 500 mA and junction temperature ≤150 °C-typically ≤50 mA with appropriate h_FE-based bias design.

Does BC817,215 support automotive applications?

No. Per Nexperia's Rev. 8 data sheet, BC817,215 is explicitly designated as non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade process controls; use BC817-Q series variants for automotive designs.

How does thermal performance differ between standard and enhanced PCB layouts?

On standard FR4 (single-sided copper, tin-plated), R_th(j-a) is 500 K/W; with a 1 cm² collector pad, it improves to 362 K/W. This 28% reduction allows ~150 mW higher continuous power dissipation before reaching 150 °C junction temperature at 25 °C ambient.

Can BC817,215 replace BC847 in existing designs?

Only if the design requires ≥500 mA collector current and tolerates wider h_FE variation (100–600 vs. 200–450). BC817,215 has identical pinout but higher power dissipation and different saturation characteristics-verify V_CE(sat) and thermal margins before substitution.