Infineon Technologies BAT165E6874HTMA1

Overview

BAT165E6874HTMA1 from Infineon Technologies is a medium-power AF Schottky diode in SOD323 package, configured as a single discrete device with 40 V reverse voltage rating, 750 mA forward current capability, and low 0.44 V forward voltage at 750 mA. It serves in low-loss clamping, bias isolation, and meter protection circuits in automotive and industrial instrumentation.

For engineers reviewing the BAT165E6874HTMA1 datasheet, BAT165E6874HTMA1 pinout, BAT165E6874HTMA1 application, or BAT165E6874HTMA1 equivalent, key selection criteria include its AEC-Q101 qualification, 8.4 pF capacitance at 10 V, 900 µA reverse leakage at 40 V/65°C, thermal resistance ≤95 K/W, and RoHS-compliant Pb-free construction.

Technical Context

This Schottky diode employs a platinum-silicide (PtSi) barrier structure enabling fast recovery (no minority carrier storage), low forward voltage drop, and minimal switching loss. Its junction temperature rating of 150°C and thermal resistance ≤95 K/W support operation in thermally constrained PCB layouts.

The device exhibits nonlinear capacitance (8.4–12 pF at 1 MHz, VR = 10 V), low IR drift over temperature (up to 900 µA at 65°C/40 V), and derated VR/IF above 25°C per published curves - critical for stable biasing in analog front-ends and protection networks.

Key Specifications

Pinout & Package

SOD323 surface-mount package: 2-terminal, cathode-marked (white dot), 1.7 mm × 1.25 mm footprint, 0.9 mm height, designed for automated placement and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky diode applications.

Compared with SBAT54LT1G and NSR0230P2T5G, BAT165E6874HTMA1 provides 33% higher VR margin and 3.75× higher IF rating in the same SOD323 footprint - making it uniquely suited for automotive-grade meter protection requiring simultaneous high surge tolerance and thermal robustness.

Availability

BAT165E6874HTMA1 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial energy meters, and portable test equipment requiring stable component supply, AEC-Q101 compliance, and consistent Schottky performance across temperature.

Supply support for BAT165E6874HTMA1 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 ICs, and discrete devices, with global manufacturing and quality certification infrastructure.

The BAT165 belongs to Infineon's high-reliability Schottky diode product line, engineered specifically for automotive and industrial analog signal conditioning, clamping, and bias isolation applications demanding AEC-Q101 validation and thermal resilience.

FAQ

Is BAT165E6874HTMA1 pin-compatible with BAT165E6327HTSA1?

Yes - both share identical SOD323 package, anode/cathode pin assignment, and marking layout. The suffix difference reflects tape-and-reel packaging (6874 = 3,000 pcs/reel; 6327 = 3,000 pcs/reel), not electrical or mechanical variation. Footprint and soldering process are fully interchangeable.

What is the maximum allowable PCB trace width for thermal relief when mounting BAT165E6874HTMA1?

Per Infineon Application Note Thermal Resistance, a minimum 0.5 mm copper trace width with ≥1 cm² thermal pad area is recommended to achieve RthJA < 200 K/W. The device's RthJS ≤95 K/W assumes direct solder connection to a 160 K/W PCB thermal path - narrower traces increase junction temperature disproportionately.

Does BAT165E6874HTMA1 require external ESD protection in addition to its built-in ESD sensitivity warning?

No - the ESD sensitivity label indicates handling precautions only; the device itself is not ESD-protected. System-level ESD protection (e.g., TVS diodes upstream) remains necessary for IEC 61000-4-2 compliance. BAT165E6874HTMA1 functions as a clamp, not a protector, and must be paired with dedicated ESD suppression components.

Can BAT165E6874HTMA1 replace BAT54 in existing designs?

Only with derating: BAT54 has 30 V VR and 200 mA IF, while BAT165E6874HTMA1 offers 40 V VR and 750 mA IF. Direct substitution is electrically safe but may require layout review due to higher surge current capability and different thermal dissipation profile - especially in compact PCBs lacking thermal relief.