Infineon Technologies BCR512E6327HTSA1

Overview

BCR512E6327HTSA1 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistors (R1 = R2 = 4.7 kΩ), rated for 50 V V_CEO, 500 mA I_C, and 330 mW P_tot at T_S ≤ 79 °C, commonly used in automotive LED driver and signal switching circuits compliant with AEC-Q101.

For engineers reviewing the BCR512E6327HTSA1 datasheet, BCR512E6327HTSA1 pinout, BCR512E6327HTSA1 application, or BCR512E6327HTSA1 equivalent, key selection criteria include input threshold voltage range (Vi(on): 1–2.2 V), saturation voltage (V_CE(sat) ≤ 0.3 V @ I_C/I_B = 20), h_FE ≥ 60, thermal resistance (R_thJS ≤ 215 K/W), and SOT23 package compatibility.

Technical Context

This digital transistor integrates two precision 4.7 kΩ bias resistors (R1/R2 ratio 0.9–1.1) to enable direct logic-level interface without external components. It operates in common-emitter configuration with guaranteed DC current gain (h_FE ≥ 60 at I_C = 50 mA, V_CE = 5 V) and supports fast switching via f_T = 100 MHz.

Designed for automotive-grade reliability, it meets AEC-Q101 qualification with junction temperature up to 150 °C, storage range from –65 °C to +150 °C, and RoHS-compliant Pb-free packaging. Its input off voltage (Vi(off) ≤ 1.5 V) and on voltage (Vi(on) ≥ 1 V) ensure robust noise immunity in 3.3 V/5 V digital control environments.

Key Specifications

Pinout & Package

BCR512E6327HTSA1 is housed in a standard SOT23 plastic surface-mount package (3.15 × 1.75 × 1.15 mm), with lead finish Pb-free and qualified per AEC-Q101. Pin 1 = Base (with internal R1/R2 network), Pin 2 = Emitter, Pin 3 = Collector.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BCR512H6327XTSA1, this part offers identical performance in a larger reel format; versus NSV5123MUT1G, it delivers superior 3.3 V compatibility and tighter R1/R2 matching, making it optimal for automotive body-control modules where GPIO drive strength and thermal stability are critical.

Availability

BCR512E6327HTSA1 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC output stages, consumer appliance power sequencing, and HVAC blower motor enable functions requiring stable component supply and AEC-Q101 compliance.

Supply support for BCR512E6327HTSA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global R&D and manufacturing infrastructure.

The BCR512 belongs to Infineon's automotive-qualified digital transistor product line, designed specifically for replacing discrete BJT + resistor combinations in cost-sensitive, space-constrained, and reliability-critical signal switching applications.

FAQ

What is the maximum allowable ambient temperature for continuous operation?

The device has a maximum junction temperature of 150 °C and a thermal resistance R_thJS ≤ 215 K/W. At 500 mA I_C and 0.3 V V_CE(sat), power dissipation is 150 mW. Using R_thJS, the maximum solder-point temperature is 117.8 °C. With typical PCB copper area, ambient temperature should be kept below 85 °C for reliable long-term operation.

Can BCR512E6327HTSA1 replace a standard 2N3904 with external base resistors?

Yes - it replaces a 2N3904 plus two 4.7 kΩ resistors in low-speed switching applications. However, its fixed R1/R2 network limits flexibility in bias adjustment. For designs requiring variable gain or precise saturation control, discrete implementation remains preferable. It is not recommended for linear amplifier use.

Is the SOT23 package lead coplanarity verified per J-STD-020?

Yes - Infineon specifies SOT23 package lead coplanarity ≤ 0.15 mm per J-STD-020 Rev E. The device is qualified for reflow soldering with peak temperature up to 260 °C (MSL3), and the Pb-free termination meets JEDEC J-STD-006B requirements for solderability and intermetallic formation.

Does the AEC-Q101 qualification cover humidity testing?

Yes - AEC-Q101 qualification includes THB (Temperature-Humidity-Bias) testing at 85 °C/85% RH for 1,000 hours with applied bias. Infineon's test report confirms no parametric shift beyond limits for V_CEO, h_FE, and leakage currents, validating moisture resistance for under-hood deployment.