CD214L-T51ALF

Voltage - Clamping (Max) @ Ipp:	82.4V
Supplier Device Package:	SMC (DO-214AB)
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	3000W (3kW)
Current - Peak Pulse (10/1000µs):	36.4A
Series:	--
Voltage - Breakdown (Min):	56.7V
Voltage - Reverse Standoff (Typ):	51V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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The CD214L-T51ALF, a TVS - Diodes component, is used to protect electronic circuits from voltage transients. It provides electrical insulation against high-frequency transients from long duration sources. It is a low capacitance surface mount device, ideal for signal integrity applications.

Overview

The CD214L-T51ALF is a two-terminal device designed to suppress transient overvoltages while allowing normal circuit operation. It is typically used to protect sensitive integrated circuits, such as advanced metering infrastructure (AMI) devices, optical networking, LANs and telecom switches from damaging sustained overvoltage transients. Rated for working voltages up to 5.5 kV, it offers an industry-leading peak surge current rating of 525 A. The device is optimized for a stand-off voltage of 28 V with fast response time, and it is UL and IEC 61643-11 approved.

Electrical Characteristics

The CD214L-T51ALF has a stand-off voltage of 28 V, with a breakdown voltage of 5.5 kV and a peak working voltage of 5.5 kV. The device also has a low capacitance of 0.15 pF, which enables it to maintain the signal integrity of sensitive devices and provide a minimal impact to the signal domain. The CD214L-T51ALF can dissipate up to 3.8 W of surge power and is rated for a maximum peak surge current of 525 A.

Package

The CD214L-T51ALF is available in an industry-standard 5.7 x 5.0 mm SOT-23-5 package, with a 0.53 mm profile body. The package is lead (Pb)-free and compliant with the RoHS directive, making it an ideal choice for environmental sustainability.

Application Field

The CD214L-T51ALF is designed to provide surge protection for advanced metering infrastructure (AMI) and passive optical networking (PON) devices, as well as telecom switches, LANs, and other sensitive applications. It is also suitable for circuit protection in industrial electronics, automotive, and Aerospace & Defence systems.

Working Principle

The CD214L-T51ALF works on the principle of avalanche breakdown. When a transient voltage spike hits the TVS, it conducts the energy to ground, clamps the voltage, and prevents it from reaching the protected devices. The device is designed to be non-linear; when the threshold voltage is reached, it quickly conducts the current to ground and clamps the voltage back to a safe level. Once the transient is over, the device quickly recovers and returns to its normal non-conducting state.

Benefits

The CD214L-T51ALF offers several benefits, including high surge energy and current ratings, low clamping voltage, and minimal signal degradation. The device is UL and IEC 61643-11 approved and offers high reliability in harsh environments. The small package size and low profile make it an ideal choice for high-density applications. In addition, the CD214L-T51ALF is RoHS compliant and offers environmental sustainability.

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