Infineon Technologies BC860BWE6327HTSA1

Overview

BC860BWE6327HTSA1 from Infineon Technologies is a PNP silicon small-signal transistor designed for audio-frequency input stages and driver circuits. It delivers high DC current gain (h_FE = 220–480 at I_C = 2 mA), low V_CE(sat) (max 300 mV at I_C = 10 mA/I_B = 0.5 mA), and low noise (F = 1–4 dB at 1 kHz), making it suitable for low-distortion preamplifier and level-shifting applications in automotive and industrial control modules.

For engineers reviewing the BC860BWE6327HTSA1 datasheet, BC860BWE6327HTSA1 pinout, BC860BWE6327HTSA1 application, or BC860BWE6327HTSA1 equivalent, key selection criteria include verified h_FE grouping (B-grade), SOT-323 package thermal resistance (R_thJS ≤ 105 K/W), AEC-Q101 qualification, and complementary NPN pairing with BC847B/BC848B series.

Technical Context

This PNP transistor operates in linear amplification and switching modes with guaranteed performance across −65 °C to +150 °C junction temperature. Its h_FE grading (B-group) ensures consistent current amplification between 220 and 480 at I_C = 2 mA/V_CE = 5 V, while low V_CE(sat) (≤300 mV) and V_BE(sat) (≤850 mV) support efficient biasing in low-voltage driver topologies.

The device exhibits f_T = 250 MHz (typ), C_cb = 1.5 pF (typ), and C_eb = 8 pF (typ), enabling stable operation up to mid-VHF range. Noise figure of 1–4 dB at 1 kHz with R_S = 2 kΩ confirms suitability for low-noise analog signal conditioning where SNR preservation is critical.

Key Specifications

Pinout & Package

BC860BWE6327HTSA1 is housed in a RoHS-compliant SOT-323 (SC-70) plastic surface-mount package with standard 3-pin configuration and 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP small-signal transistor applications.

Compared with BC857B and MMBT3906LT1G, BC860BWE6327HTSA1 offers superior thermal performance in SOT-323, tighter h_FE grading, and full AEC-Q101 compliance-making it optimal for space-constrained, high-reliability automotive and industrial signal conditioning.

Availability

BC860BWE6327HTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input buffers, and audio signal conditioning circuits requiring stable component supply and long-term lifecycle assurance.

Supply support for BC860BWE6327HTSA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification infrastructure.

This transistor belongs to Infineon's BC856–BC860 family of AEC-Q101-qualified PNP transistors engineered for robust, low-noise amplification and switching in harsh-environment automotive and industrial applications.

FAQ

What is the maximum operating junction temperature for BC860BWE6327HTSA1?

The absolute maximum junction temperature is 150 °C, validated per AEC-Q101 stress testing. Continuous operation above this limit risks permanent degradation of h_FE and increased leakage. Derating curves in the datasheet show usable power dissipation drops to zero at 150 °C ambient when mounted on standard FR-4 PCB with minimal copper area.

Is BC860BWE6327HTSA1 pin-compatible with BC847B or BC848B?

No-it is complementary, not pin-compatible. BC860B is PNP; BC847B/BC848B are NPN. While both use SOT-323, their pinouts differ: BC860B uses E-B-C (1-2-3), whereas BC847B uses E-B-C but with opposite polarity behavior. Direct substitution would reverse circuit function and likely cause failure.

Does BC860BWE6327HTSA1 support pulsed operation beyond its DC power rating?

Yes-pulse load capability is defined by duty cycle and pulse width. At D = 0.01 and t_p = 100 µs, peak power can reach 5× DC rating (1.25 W). The permissible P_tot(max)/P_tot(DC) ratio is graphed in the datasheet (EHP00377), showing safe operation up to 10× DC rating for sub-millisecond pulses with low duty cycles.

How does the "B" suffix in BC860B relate to h_FE specification?

The "B" denotes h_FE grade B: minimum 220, typical 330, maximum 480 at I_C = 2 mA and V_CE = 5 V. This is distinct from grade A (125–220) and grade C (420–800). Grade B provides optimal balance of gain consistency and saturation voltage for general-purpose AF amplification and switching.