SP4021-01FTG SP4021-01FTG is a surface mount TVS diode from Littelfuse designed for steering (rail to rail) protection in Ethernet applications. It features a 5VWM reverse standoff voltage, 19.6V typical clamping voltage, and 600W peak pulse power.
Mfr Part #:

SP4021-01FTG

Available from 4 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
SP4021-01FTG is a surface mount TVS diode from Littelfuse designed for steering (rail to rail) protection in Ethernet applications. It features a 5VWM reverse standoff voltage, 19.6V typical clamping voltage, and 600W peak pulse power.
Total Stock: 2,117 pcs
$ Price Range: $0.20 - $0.94

SP4021-01FTG Available from 4 distributors

Authorised
Non-Authorised

SP4021-01FTG Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Capacitance @ Frequency
Current
Mounting Type
Operating Temperature
Power
Power Line Protection
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage

SP4021-01FTG Description

Short technical summary and product information.

The SP4021-01FTG is a unidirectional TVS diode from Littelfuse Inc. optimized for steering (rail to rail) overvoltage protection in high-speed data lines, particularly Ethernet interfaces. It offers a peak pulse power rating of 600W (8/20µs) with a low typical clamping voltage of 19.6V, ensuring effective clamping of transient events.

 

Electrical characteristics include a peak pulse current of 24A (8/20µs) and a low capacitance of 2.5pF at 1MHz, which minimizes signal degradation. The device operates over a temperature range of -40°C to 125°C and is not intended for power line protection.

 

Packaged in a surface mount SOD-323 (SC-76) package, the SP4021-01FTG is suitable for compact designs. The single unidirectional channel provides protection for one signal line. Compliance data includes RoHS3, REACH unaffected, and MSL level 1, though these are unverified.

SP4021-01FTG Quick Information

Product Type: TVS Diode
Canonical Name: TVS Diode, Steering (Rail to Rail), Unidirectional, 1 Channel, 5VWM, 19.6V Clamping, SOD-323
Subcategory: TVS Diodes

SP4021-01FTG Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SP4021-01FTG Estimated Pricing

Qty Low High
1+ $0.94 $0.94
10+ $0.57 $0.57
100+ $0.39 $0.39
500+ $0.30 $0.30
1,000+ $0.27 $0.27
3,000+ $0.20 $0.20

Estimated market price range - modelled values for guidance only, not live distributor offers.

SP4021-01FTG Features

  • 600W peak pulse power handling.
  • Low capacitance: 2.5pF at 1MHz.
  • Unidirectional steering rail-to-rail protection.
  • Surface mount package SOD-323.
  • Operating temperature -40°C to 125°C.

SP4021-01FTG Applications

  • Ethernet port overvoltage protection.
  • High-speed data line ESD protection.
  • Rail-to-rail clamping for differential signals.
  • Suitable for 5V signal lines.

SP4021-01FTG FAQs

7 frequently asked questions generated from this part’s specifications.
What is the clamping voltage of SP4021-01FTG?

The typical clamping voltage is 19.6V.

What is the peak pulse current rating?

The peak pulse current is 24A (8/20µs).

What package is the SP4021-01FTG available in?

It is available in a surface mount SOD-323 (SC-76) package.

What is the capacitance of this TVS diode?

The typical capacitance is 2.5pF at 1MHz.

What is the operating temperature range?

The operating temperature range is -40°C to 125°C (TJ).

How many channels does the SP4021-01FTG have?

It has one unidirectional channel.

Is it suitable for power line protection?

No, power line protection is not provided.

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