Vishay General Semiconductor - Diodes Division VCAN33C2-03G-E3-08

Overview

VCAN33C2-03G-E3-08 from Vishay Semiconductors is a bidirectional symmetrical (BiSy) dual-line ESD protection diode in SOT-323 package, designed for CAN FD and FLEX-bus interfaces. It provides ±33 V reverse stand-off voltage, <0.05 μA leakage current at 33 V, <5.2 pF capacitance at 5 V, ±30 kV IEC 61000-4-2 contact/air discharge immunity, and AEC-Q101 qualification for automotive use.

For engineers reviewing the VCAN33C2-03G-E3-08 datasheet, VCAN33C2-03G-E3-08 pinout, VCAN33C2-03G-E3-08 application, or VCAN33C2-03G-E3-08 equivalent, key selection criteria include low-capacitance dual-line protection, CAN FD signal integrity preservation, AEC-Q101 compliance, SOT-323 footprint compatibility, and clamping performance under 2 A IEC 61000-4-5 surge.

Technical Context

This device implements a symmetrical dual-channel TVS architecture with matched diodes between pins 1–3 and 2–3, enabling bidirectional transient suppression on two independent data lines without polarity constraints. Its BiSy design ensures identical clamping behavior for positive and negative transients, critical for differential bus protocols like CAN FD.

The SOT-323 package supports high-density PCB layouts while maintaining thermal robustness up to +175 °C junction temperature. The e3 tin-plated terminations comply with RoHS and support lead-free reflow profiles up to 260 °C peak, with MSL level 1 moisture sensitivity rating.

Key Specifications

Pinout & Package

SOT-323 package: 3-pin surface-mount plastic case, 2.2 mm × 1.35 mm × 0.95 mm, MSL level 1, 260 °C max reflow peak, e3 tin plating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-line ESD protection applications.

Compared with RCLAMP0524P.TCT and SP3205-01HTG, the VCAN33C2-03G-E3-08 uniquely balances 33 V working voltage, sub-5.2 pF capacitance, and AEC-Q101 qualification in SOT-323-making it optimal for space-constrained CAN FD nodes where voltage margin and signal integrity are co-critical.

Availability

VCAN33C2-03G-E3-08 is available at Aetrix Electronics and suitable for automotive CAN FD networks, industrial FLEX-bus interfaces, body electronics modules, telematics control units, and other applications requiring stable component supply with AEC-Q101 assurance and low-capacitance ESD protection.

Supply support for VCAN33C2-03G-E3-08 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

Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, PA. It serves automotive, industrial, computing, and consumer markets with high-reliability, application-optimized solutions.

The VCAN series is part of Vishay's automotive-grade ESD protection portfolio, engineered specifically for high-speed serial bus interfaces-including CAN, CAN FD, LIN, and FLEX-bus-where low capacitance, precise clamping, and AEC-Q101 validation are mandatory.

FAQ

What is the primary circuit role of the VCAN33C2-03G-E3-08 in a CAN FD system?

The VCAN33C2-03G-E3-08 serves as a dual-line bidirectional ESD and surge protection device placed at the physical interface between the CAN FD transceiver and external connectors. It clamps transient voltages to safe levels-43–47 V at 1 A-while adding less than 5.2 pF capacitance to preserve signal edge integrity at data rates up to 5 Mbps. Its common-cathode SOT-323 configuration minimizes PCB layout complexity for differential pair protection.

Does the VCAN33C2-03G-E3-08 meet AEC-Q101 requirements for under-hood automotive use?

Yes, the VCAN33C2-03G-E3-08 is explicitly AEC-Q101 qualified per the Vishay datasheet (Document No. 86311, Rev. 1.1). It is tested across −55 °C to +175 °C junction temperature, passes human body model (HBM) Class H3B (>8 kV), and meets mechanical and environmental stress requirements for automotive under-hood and body control modules. The SOT-323 package carries MSL level 1 rating for robust assembly.

What is the maximum clamping voltage of the VCAN33C2-03G-E3-08 under IEC 61000-4-5 surge conditions?

Under IEC 61000-4-5 8/20 μs surge testing at the maximum rated peak pulse current (IPPM = 2 A), the VCAN33C2-03G-E3-08 exhibits a clamping voltage (VC) of 50–60 V. At lower 1 A surge current, VC is 43–47 V. These values are measured pin-to-pin (e.g., pin 1 to pin 3) and ensure downstream CAN transceivers remain within absolute maximum ratings during surge events.

How does the capacitance matching specification (dCD ≤ 2 %) benefit differential bus performance?

The VCAN33C2-03G-E3-08 guarantees ≤2 % mismatch between the capacitances of its two protection channels (CD13 vs. CD23 at VR = 5 V). This tight matching prevents skew and common-mode imbalance on differential buses like CAN FD, preserving signal symmetry, minimizing electromagnetic emissions, and avoiding receiver decision errors caused by unequal line loading-critical for reliable high-speed communication.

Can the VCAN33C2-03G-E3-08 be used in non-automotive applications such as industrial FLEX-bus?

Yes, the VCAN33C2-03G-E3-08 is widely deployed in industrial FLEX-bus interfaces due to its ±33 V working voltage, low 4.2–5.2 pF capacitance, and ±30 kV ESD immunity. Its robust construction and wide −55 °C to +175 °C operating range suit factory automation, motor drives, and process control systems. Vishay explicitly lists FLEX-bus among supported applications in the official datasheet.