SM6T18CAY

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SM6T18CAY

TVS DIODE 15.3VWM 32.5VC SMB

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規格

Supplier STMicroelectronics
Package Tape & Reel (TR),Cut Tape (CT)
Series Automotive, AEC-Q101, SM6TY, TRANSIL™
ProductStatus Active
Type Zener
BidirectionalChannels 1
Voltage-ReverseStandoff(Typ) 15.3V
Voltage-Breakdown(Min) 17.1V
Voltage-Clamping(Max)@Ipp 32.5V
Current-PeakPulse(10/1000µs) 123A (8/20µs)
Power-PeakPulse 600W
PowerLineProtection No
Applications Automotive
OperatingTemperature -55°C ~ 150°C (TJ)
MountingType Surface Mount
Package/Case DO-214AA, SMB

概述

Description

SM6T18CAY is a 600 W peak-pulse, surface-mount transient voltage suppressor (TVS) diode in the SM6T family. It protects 18 V rails and I/O lines from voltage transients (surges, load dumps, inductive kick, ESD) by clamping excess voltage to safe levels. Used for board- and system-level protection in automotive, industrial, and telecom applications. Key idea: fast response to transients to prevent damage to downstream circuitry. The exact electrical values (stand-off voltage near 18 V, breakdown around 19–21 V, clamp voltage at higher current, leakage, capacitance) and whether the variant is unidirectional or bidirectional depend on the specific part revision—consult the datasheet for your exact variant.

Features

Here are the typical features of the SM6T18CAY (SM6T series TVS diode):
- Peak pulse power: 600 W (10/1000 μs)
- Stand-off voltage (VR): 18 V
- Robust transient protection for data/power lines (USB, CAN, Ethernet, etc.)
- Fast response time (transient protection in nanoseconds)
- Available in SMA/SMB-style packages (DO-214AA/DO-214AB variants)
- Suitable for automotive/industrial environments (temperature range and rugged performance; check specific variant for temperature ratings)
- Low leakage in the off state
- RoHS compliant and halogen-free
Note: Exact details (unidirectional/bidirectional variant, clamp voltage, and temperature range) can vary by package and revision. Refer to the specific datasheet for SM6T18CAY to confirm VR, VBR, VCL, and environmental ratings.

Package

SM6T18CAY uses an SMB package (DO-214AB) – a medium‑power surface‑mount transient voltage suppressor package.

Pinout

- Pin count: 2 (two-terminal device).
- Function: Transient Voltage Suppressor (TVS) diode used to clamp voltage spikes and protect circuits; SM6T18CAY has an ~18 V standoff voltage.

Manufacturer

The SM6T18CAY is manufactured by Vishay Intertechnology. Vishay is a global electronics company that designs and manufactures semiconductor devices (e.g., diodes, transistors) and passive components (resistors, capacitors).

Application

SM6T18CAY is a 600 W TVS diode for transient suppression (standoff ~18 V). Applications:
- Protect 18 V DC rails and I/O lines from surges/ESD
- Automotive electronics (ECUs, sensors, DC–DC converters)
- Consumer and industrial power supplies and adapters
- Telecom/datacom interfaces
- General protection on 18 V systems and boards

Equivalent

SM6T18CAY is a 600 W TVS diode (SM6T family) with 18 V standoff in a SMB/DO-214AB package. Common cross-reference parts (18 V, ~600 W) from other brands include:
- Littelfuse: SM6T18CA / SM6T18CAY
- ON Semiconductor: SM6T18AY / SM6T18CA
- Vishay: TransZorb 18V devices in similar footprint (check exact part numbers and packaging)

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