Infineon Technologies BCR133E6327HTSA1

Overview

BCR133E6327HTSA1 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = R2 = 10 kΩ), designed for low-power switching in interface, inverter, and driver circuits. It features V_CEO = 50 V, I_C = 100 mA, V_CE(sat) ≤ 0.3 V at I_C = 10 mA/I_B = 0.5 mA, and operates up to T_j = 150 °C in automotive-grade AEC-Q101-qualified SOT23 package.

For engineers reviewing the BCR133E6327HTSA1 datasheet, BCR133E6327HTSA1 pinout, BCR133E6327HTSA1 application, or BCR133E6327HTSA1 equivalent, key selection criteria include input threshold voltage (V_i(on) = 1–2.5 V), saturation performance under I_C/I_B = 20, thermal resistance (R_thJS ≤ 240 K/W), and AEC-Q101 qualification for automotive signal conditioning.

Technical Context

This digital transistor integrates two matched on-chip resistors to enable single-pin base drive-eliminating external bias components in level-shifting and logic interfacing. Its common-emitter configuration supports direct TTL/CMOS-to-bipolar signal translation with guaranteed V_i(off) ≤ 1.5 V and V_i(on) ≥ 1 V at defined load conditions.

The device uses epitaxial planar technology with emitter ballasting for stable h_FE (min. 30 at I_C = 5 mA/V_CE = 5 V) and low C_cb (typ. 3 pF), enabling reliable operation in 100 MHz switching applications while maintaining robust ESD immunity and Pb-free RoHS compliance.

Key Specifications

Pinout & Package

SOT23 surface-mount plastic package (3-pin, standard JEDEC TO-236AB outline), footprint-compatible with BC846/BC847 series; compact 2.9 mm × 1.3 mm × 1.0 mm profile with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital transistor switching applications.

Compared with BCR133E6327HTSA1, the HTMA1 variant offers identical performance in smaller reels for flexibility, while the NSVD120DP033T1G trades automotive qualification for higher voltage headroom-making the original optimal for cost-sensitive, qualified automotive signal switching.

Availability

BCR133E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and consumer appliance control panels requiring stable component supply and AEC-Q101 compliance.

Supply support for BCR133E6327HTSA1 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 ICs, and discrete devices, with global manufacturing and quality certification to ISO/TS 16949.

BCR133E6327HTSA1 belongs to Infineon's BCR family of digital transistors-designed specifically for automotive and industrial signal interface applications where space, reliability, and qualification are critical.

FAQ

What is the maximum operating temperature for BCR133E6327HTSA1?

The junction temperature limit is 150 °C, and the device is rated for continuous operation up to 125 °C case temperature under AEC-Q101 conditions. Derating begins at 102 °C ambient due to its R_thJS ≤ 240 K/W and P_tot = 200 mW rating, requiring thermal-aware PCB layout with adequate copper pour.

Can BCR133E6327HTSA1 replace a standard BJT like BC847 without circuit modification?

No-BCR133E6327HTSA1 has integrated base resistors and functions as a digital switch, not a linear amplifier. Direct substitution requires removing external base bias resistors and verifying that the logic drive voltage meets V_i(on) (1–2.5 V) and V_i(off) (0.8–1.5 V) thresholds for intended switching behavior.

Is this part suitable for PWM-driven LED dimming at 20 kHz?

Yes-its f_T = 130 MHz and V_CE(sat) ≤ 0.3 V support clean 20 kHz switching with minimal distortion. However, ensure I_C remains ≤ 100 mA peak and average power dissipation stays within derated P_tot limits based on board thermal design.

Does BCR133E6327HTSA1 have a built-in flyback diode for inductive load driving?

No-it does not include an integrated flyback diode. When switching relays or solenoids, an external 1N4148 or similar fast-switching diode must be placed across the load with cathode to V_CC to suppress inductive kickback and prevent V_CEO overstress.