SMF4L 400W Surface Mount Diodes

Littelfuse SMF4L 400W Surface Mount Diodes consist of a SOD-123FL small and flat lead low-profile package designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. The SMF4L features 400W peak pulse power capability at 10/1000µs waveform with a repetition rate (duty cycle) of 0.1%. The diodes are compatible with industrial standard package SOD-123FL and offer a low inductance with excellent clamping capability in a low profile package of 0.98 maximum height.

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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Polarity
Number of Channels
Working Voltage
Termination Style
Clamping Voltage
Breakdown Voltage
Package/Case
Ipp - Peak Pulse Current
Pppm - Peak Pulse Power Dissipation
Vesd - Voltage ESD Contact
Vesd - Voltage ESD Air Gap
Minimum Operating Temperature
Maximum Operating Temperature
Series
Qualification
Packaging
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 18V
Datasheet
9,028In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 18 V SMD/SMT 29.2 V 20 V SOD-123-2 13.7 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 20V 5% Uni-directional
Datasheet
3,750In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 20 V SMD/SMT 32.4 V 22.2 V SOD-123-2 12.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 20V
Datasheet
5,319In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 20 V SMD/SMT 32.4 V 22.2 V SOD-123-2 12.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 22V 5% Uni-directional
Datasheet
632In Stock
3,000Expected 11/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000
Unidirectional 1 Channel 22 V SMD/SMT 35.5 V 24.4 V SOD-123-2 11.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 22V
Datasheet
5,853In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 22 V SMD/SMT 35.5 V 24.4 V SOD-123-2 11.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 24V 5% Uni-directional
Datasheet
4,360In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 24 V SMD/SMT 38.9 V 26.7 V SOD-123-2 10.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 24V
Datasheet
6,967In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 24 V SMD/SMT 38.9 V 26.7 V SOD-123-2 10.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 26V 5% Uni-directional
Datasheet
1,042In Stock
3,000Expected 06/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 26 V SMD/SMT 42.1 V 28.9 V SOD-123-2 9.5 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 26V
Datasheet
1,337In Stock
3,000Expected 31/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 26 V SMD/SMT 42.1 V 28.9 V SOD-123-2 9.5 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 28V 5% Uni-directional
Datasheet
3,471In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 28 V SMD/SMT 45.4 V 31.1 V SOD-123-2 8.8 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 28V
Datasheet
6,312In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 28 V SMD/SMT 45.4 V 31.1 V SOD-123-2 8.8 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 30V 5% Uni-directional
Datasheet
6,359In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000
Unidirectional 1 Channel 30 V SMD/SMT 48.4 V 33.3 V SOD-123-2 8.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 33V 5% Uni-directional
Datasheet
13,524In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 33 V SMD/SMT 53.3 V 36.7 V SOD-123-2 7.5 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 36V 5% Uni-directional
Datasheet
9,954In Stock
6,000Expected 18/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 36 V SMD/SMT 58.1 V 40 V SOD-123-2 6.9 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 40V
Datasheet
6,116In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 40 V SMD/SMT 64.5 V 44.4 V SOD-123-2 6.2 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 43V 5% Uni-directional
Datasheet
3,559In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 43 V SMD/SMT 69.4 V 47.8 V SOD-123-2 5.8 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 43V
Datasheet
5,267In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 43 V SMD/SMT 69.4 V 47.8 V SOD-123-2 5.8 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 45V
Datasheet
2,180In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 45 V SMD/SMT 72.7 V 50 V SOD-123-2 5.5 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 48V 5% Uni-directional
Datasheet
8,678In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 48 V SMD/SMT 77.4 V 53.3 V SOD-123-2 5.2 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 5V 5% Uni-directional
Datasheet
6,923In Stock
6,000Expected 21/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000
Unidirectional 1 Channel 5 V SMD/SMT 9.2 V 6.4 V SOD-123-2 40.1 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 51V 5% Uni-directional
Datasheet
4,764In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 51 V SMD/SMT 82.4 V 56.7 V SOD-123-2 4.9 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes SMF4L - CA 51V
Datasheet
7,804In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Bidirectional 1 Channel 51 V SMD/SMT 82.4 V 56.7 V SOD-123-2 4.9 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 54V 5% Uni-directional
Datasheet
5,975In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000
Unidirectional 1 Channel 54 V SMD/SMT 87.1 V 60 V SOD-123-2 4.6 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 58V 5% Uni-directional
Datasheet
2,085In Stock
3,000Expected 13/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Unidirectional 1 Channel 58 V SMD/SMT 93.6 V 64.4 V SOD-123-2 4.3 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 7V 5% Uni-directional
Datasheet
4,826In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000
Unidirectional 12 V 8.6 V 30.9 A 370 W + 150 C SMF4L AEC-Q100 Reel, Cut Tape, MouseReel