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SM4T18CAY

Name: SM4T18CAY
Rating: 4.7 (12 reviews)

TVS DIODE 15VWM 32.5VC SMA

製造商
製造商。部分 #SM4T18CAY
包 DO-214AC, SMA
資料表 SM4T18CAY DataSheet
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規格

Supplier	STMicroelectronics
Package	Tape & Reel (TR),Cut Tape (CT)
Series	Automotive, AEC-Q101, SM4TY, TRANSIL™
ProductStatus	Active
Type	Zener
BidirectionalChannels	1
Voltage-ReverseStandoff(Typ)	15V
Voltage-Breakdown(Min)	16.7V
Voltage-Clamping(Max)@Ipp	32.5V
Current-PeakPulse(10/1000µs)	71A (8/20µs)
Power-PeakPulse	400W
PowerLineProtection	No
Applications	Automotive
OperatingTemperature	-55°C ~ 150°C (TJ)
MountingType	Surface Mount
Package/Case	DO-214AC, SMA

概述

Description

SM4T18CAY is a surface-mount transient voltage suppressor (TVS) diode in the SM4T family. It provides fast, high-energy protection for 18 V-rated power or signal lines, clamping harmful surges to protect downstream circuitry. The device is designed for compact electronics and is suitable for applications requiring fast response to ESD, EFT, and other transient events. It typically offers low leakage in normal operation and a high peak pulse current rating during a surge. Use it by placing it between the protected line and ground (or between lines, depending on the variant) to shunt transients. For exact electrical parameters (standoff/breakdown voltages, capacitance, peak pulse power) and packaging, consult the manufacturer’s datasheet for SM4T18CAY.

Features

SM4T18CAY is a TVS diode array for ESD/surge protection. Typical features (may vary by exact vendor):
- 4-channel transient voltage suppressor (4 lines)
- Working standoff voltage around 18 V (VWM ≈ 18 V)
- Low capacitance per channel for high-speed signal protection
- Bidirectional or unidirectional variants available
- Very low leakage current
- High peak pulse current rating for surge events
- Fast response to ESD events per IEC61000-4-2
- Small surface-mount package; RoHS/compliant; lead-free
- Wide operating temp range (industrial; automotive options often available)
- Suitable for protecting 18 V rails and data/interface lines (e.g., automotive/industrial electronics)
Note: exact electrical specs (capacitance, leakage, peak current, packaging) depend on the manufacturer and variant. Please share the manufacturer/datasheet for precise details.

Package

SC-70-6 (SOT-23-6) surface-mount package for a 4-channel TVS diode array.

Pinout

Pin count: 6 pins (SC-70/SOT-23-6 package).
Function: 4-channel transient-voltage-suppressor (TVS) diode array with a common ground, for ESD/surge protection of four signal lines; standoff voltage about 18 V.

Manufacturer

- Manufacturer: Littelfuse, Inc.
- About the company: A global electronics components manufacturer specializing in circuit protection and power control devices (fuses, TVS diodes, surge protectors, etc.) for automotive, industrial, telecom, and consumer markets.

Application

SM4T18CAY is a 4-channel TVS diode array for ESD and surge protection on multiple lines. Applications: automotive electronics (CAN/LIN, sensors, ECUs in 12–24 V systems); consumer electronics and mobile devices (USB, HDMI, data interfaces); industrial and IoT equipment (RS-485, CANopen, Ethernet, other data lines); protection for power rails and signal lines in telecom/network gear and embedded systems operating up to ~18 V.