SP4021-01FTG-C The SP4021-01FTG-C is a bidirectional TVS diode from Littelfuse Inc. with a 5V reverse standoff voltage and 19.6V typical clamping voltage.
Mfr Part #:

SP4021-01FTG-C

Available from 2 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The SP4021-01FTG-C is a bidirectional TVS diode from Littelfuse Inc. with a 5V reverse standoff voltage and 19.6V typical clamping voltage.
Total Stock: 8,121 pcs
$ Price Range: $0.22 - $0.99

SP4021-01FTG-C Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
5,000 pcs
5000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
Non-Authorised Inventory information
3,121 pcs
3121 pcs On Request 1 On Request On Request On Request On Request On Request

SP4021-01FTG-C Specifications Quick View

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

SP4021-01FTG-C Description

Short technical summary and product information.

The SP4021-01FTG-C is a bidirectional TVS diode from Littelfuse Inc. designed for protecting sensitive electronics from voltage transients. It features a reverse standoff voltage of 5 V and a typical clamping voltage of 19.6 V under an 8/20 µs pulse condition. The device can handle a peak pulse current of 24 A (8/20 µs) and offers a peak pulse power dissipation of 600 W.

 

This TVS diode is configured as a steering (rail-to-rail) protector with a single bidirectional channel. It is specifically intended for Ethernet applications and does not provide power line protection. The component is surface mount packaged in a SOD-323 case (SC-76), making it suitable for compact PCB designs.

 

The SP4021-01FTG-C operates over a junction temperature range of -40°C to 125°C. Its low typical capacitance of 2.5 pF at 1 MHz makes it well-suited for high-speed data line protection without significant signal degradation.

SP4021-01FTG-C Quick Information

Product Type: TVS Diode
Canonical Name: SP4021-01FTG-C TVS Diode
Subcategory: Steering (Rail to Rail) TVS

SP4021-01FTG-C Compliance

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

SP4021-01FTG-C Estimated Pricing

Qty Low High
1+ $0.99 $0.99
10+ $0.62 $0.62
100+ $0.40 $0.40
500+ $0.31 $0.31
1,000+ $0.28 $0.28
3,000+ $0.24 $0.24
6,000+ $0.23 $0.23
9,000+ $0.22 $0.22

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

SP4021-01FTG-C Features

  • Bidirectional TVS diode with single channel.
  • 5V reverse standoff voltage rating.
  • 19.6V typical clamping voltage at 24A.
  • 600W peak pulse power dissipation.
  • Low 2.5pF capacitance at 1MHz.

SP4021-01FTG-C Applications

  • Ideal for Ethernet port transient protection.
  • Used in high-speed data line circuits.
  • Suitable for compact surface mount designs.

SP4021-01FTG-C FAQs

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

The reverse standoff voltage (V_RWM) is 5 V.

What is the clamping voltage of this TVS diode?

The typical clamping voltage is 19.6 V under an 8/20 µs pulse condition.

What is the peak pulse current rating?

The peak pulse current is 24 A for an 8/20 µs waveform.

What package does the SP4021-01FTG-C come in?

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

Is this TVS diode bidirectional?

Yes, it is a bidirectional TVS diode with one channel.

What is the operating temperature range?

The operating junction temperature range is -40°C to 125°C.

What is the typical capacitance of this device?

The typical capacitance is 2.5 pF at 1 MHz.

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