STMicroelectronics ESDCAN05-2BWY

Overview

ESDCAN05-2BWY from STMicroelectronics is an AEC-Q101-qualified dual-line transient voltage suppressor (TVS) designed for bidirectional ESD and EOS protection of CAN H and CAN L signal lines in automotive networks. It features a 39 V breakdown voltage (V_BR), 61 V clamping voltage (V_CL) at 3 A (8/20 µs), 3 pF line-to-ground capacitance, ±30 kV ESD immunity per ISO 10605 (C = 150 pF/R = 330 Ω), and compliance with ISO 7637-3 Pulse 3a/3b (±150 V). It is deployed in high-speed CAN FD and LIN bus interfaces where low capacitance and robust transient suppression are critical.

For engineers reviewing the ESDCAN05-2BWY datasheet, ESDCAN05-2BWY pinout, ESDCAN05-2BWY application, or ESDCAN05-2BWY equivalent, key selection criteria include its 39 V V_BR, 61 V V_CL at 3 A, 3 pF capacitance, SOT323-3L package footprint, and AEC-Q101 qualification for under-hood automotive use.

Technical Context

This device implements a dual-channel, bidirectional TVS diode array in a single SOT323-3L package, with independent protection paths for CAN H and CAN L referenced to GND. Its low 3 pF junction capacitance ensures minimal signal integrity impact on CAN FD buses operating up to 5 Mbps and supports compatibility with FlexRay and USB 2.0 physical layers.

The device operates across –55 °C to +175 °C junction temperature, with leakage current ≤0.1 µA at 36 V reverse standoff and thermal coefficient α_T = 0.01 × 10^–4/°C for predictable V_BR drift over temperature. It meets ISO 16750-2 jump-start/reverse-battery stress and IEC 61000-4-4 EFT up to 4 kV.

Key Specifications

Pinout & Package

ESDCAN05-2BWY is housed in a JEDEC-registered SOT323-3L package (3-pin, 1.8 mm × 1.35 mm × 1.1 mm), with exposed pad not electrically connected. The package complies with IPC7531 footprint standards and MSL Level 1 moisture sensitivity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-line automotive CAN bus TVS applications.

Compared with ESDCAN04-2BWY and ESDCAN06-2BWY, ESDCAN05-2BWY uniquely balances 39 V V_BR, 61 V clamping, and 3 pF capacitance - making it the only variant qualified for full-speed CAN FD (5 Mbps) with AEC-Q101 reliability and ±30 kV ESD robustness.

Availability

ESDCAN05-2BWY is available at Aetrix Electronics and suitable for automotive powertrain control, body electronics integration, and ADAS domain controller designs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ESDCAN05-2BWY 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power devices, and automotive-grade protection components.

The ESDCANxx series belongs to ST's automotive-grade transient protection product line, engineered specifically to meet stringent ISO 16750, ISO 10605, and ISO 7637-3 requirements for CAN/LIN physical layer resilience in modern vehicle architectures.

FAQ

What is the maximum peak pulse current rating for ESDCAN05-2BWY?

The ESDCAN05-2BWY is rated for 3 A peak pulse current (I_PP) under 8/20 µs waveform conditions, verified per IEC 61000-4-5 and ISO 7637-3 test methods. This corresponds to full immunity against ISO 10605 ±30 kV contact discharge (150 pF/330 Ω) and sustained operation after 1000+ such events without parameter shift.

Does ESDCAN05-2BWY require external biasing or series impedance?

No. ESDCAN05-2BWY is a passive bidirectional TVS diode array that operates without external bias, current-limiting resistors, or series ferrites. It connects directly between CAN H/CAN L and GND. Its low 3 pF capacitance eliminates need for additional RC filtering in CAN FD layouts.

How does the 39 V breakdown voltage relate to CAN bus operating voltage?

The 39 V V_BR is intentionally set above the CAN bus's maximum common-mode voltage (±40 V during ISO 7637-3 Pulse 3a/3b) to avoid false triggering during normal transients, while remaining below typical CAN transceiver absolute maximum ratings (often 70 V), ensuring safe clamping action only during fault conditions.

Is the SOT323-3L package compatible with standard reflow profiles?

Yes. ESDCAN05-2BWY's SOT323-3L package is qualified for lead-free reflow per J-STD-020 MSL Level 1, with peak temperature up to 245 °C and 60-second dwell above 220 °C. ST recommends a ramp rate ≤3 °C/s and cooling rate ≥−2 °C/s to prevent solder joint fracture or die cracking.