Infineon Technologies BAT 64-05 B5003

Overview

BAT64-05 B5003 from Nexperia is a silicon Schottky diode in SOT323 package configured as a common cathode dual diode, rated for 40 V reverse voltage, 250 mA forward current, and 5 ns reverse recovery time, used for low-loss clamping and bias isolation in automotive metering and sensor signal conditioning circuits.

For engineers reviewing the BAT64-05 B5003 datasheet, BAT64-05 B5003 pinout, BAT64-05 B5003 application, or BAT64-05 B5003 equivalent, key selection criteria include thermal resistance (RthJS ≤ 155 K/W), low VF at 10 mA (320–385 mV), 4–6 pF capacitance at 1 V, AEC-Q101 qualification, and SOT323 footprint compatibility with space-constrained PCB layouts.

Technical Context

This dual common-cathode Schottky diode integrates a diffused guard ring to suppress edge breakdown and supports fast switching in bidirectional clamping paths. Its 5 ns trr and sub-400 mV VF at 10 mA enable efficient high-frequency signal routing without significant conduction loss.

The device operates across –55 °C to 150 °C junction temperature range and is qualified per AEC-Q101 for automotive use. Thermal derating is critical: maximum allowable forward current drops to ~100 mA at 105 °C case temperature due to RthJS = 155 K/W and Ptot = 250 mW limit.

Key Specifications

Pinout & Package

Package: SOT323 - 3-pin surface-mount plastic package with gull-wing leads, 1.3 mm × 1.7 mm footprint, 0.95 mm height, and cathode marking on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSS40201MR6T1G and VS-2EDH04-M3/84A, BAT64-05 B5003 uniquely balances AEC-Q101 compliance, dual common-cathode topology, low VF, and compact SOT323 size-making it optimal for space- and reliability-critical automotive signal paths.

Availability

BAT64-05 B5003 is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial sensor signal conditioning, RF detector circuits, and portable medical device protection requiring stable component supply and long-term lifecycle support.

Supply support for BAT64-05 B5003 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 essential efficiency technologies, delivering high-performance discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.

BAT64 series belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for low-loss, high-speed clamping and bias isolation in harsh-environment automotive electronics.

FAQ

What is the pin configuration of BAT64-05 B5003?

BAT64-05 B5003 uses a common-cathode dual-diode configuration in SOT323: Pin 1 = Anode 1, Pin 2 = Common Cathode, Pin 3 = Anode 2. The cathode is marked by a bar on the top surface adjacent to Pin 2. This layout supports bidirectional clamping without external node sharing.

Is BAT64-05 B5003 suitable for high-frequency RF applications?

Yes - with 4–6 pF capacitance at 1 V and 5 ns reverse recovery time, BAT64-05 B5003 performs reliably in RF detector and AM demodulator circuits up to 200 MHz. Its low CT minimizes signal attenuation, and fast trr prevents distortion in envelope detection paths.

How does thermal performance vary between BAT64-05 and BAT64-05W?

BAT64-05 has RthJS ≤ 455 K/W and max TS = 36 °C, while BAT64-05W improves to RthJS ≤ 155 K/W and TS = 104 °C. The 'W' variant uses enhanced thermal pad construction, allowing 2.9× higher continuous current at ambient temperature before exceeding Ptot = 250 mW.

Does BAT64-05 B5003 require special handling during PCB assembly?

Yes - it is ESD-sensitive (HBM ≥ 2 kV per AEC-Q101). Use grounded workstations, ionized air, and static-dissipative packaging. Reflow profile must comply with J-STD-020: peak temperature ≤ 260 °C, 20–40 sec duration. Avoid mechanical stress on leads during placement.