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 (SGD) 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 22V
Datasheet
5,840In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 SMF4L - CA 24V
Datasheet
1,178In Stock
9,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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
2,790In Stock
9,000Expected 13/8/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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
2,223In Stock
3,000Expected 31/8/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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
3,201In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
1,766In Stock
18,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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
6,126In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 SMF4L - CA 30V
Datasheet
7,576In Stock
87,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Bidirectional 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 SMF4L - CA 33V
Datasheet
9,086In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Bidirectional 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
821In Stock
15,000Expected 14/8/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 400W 40V 5% Uni-directional
Datasheet
4,942In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
Unidirectional 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 SMF4L - CA 40V
Datasheet
5,160In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
3,071In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
8,994On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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
2,670In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 SMF4L - CA 48V
Datasheet
11,597In Stock
48,000Expected 9/9/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Bidirectional 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 51V 5% Uni-directional
Datasheet
4,128In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
6,460In Stock
30,000Expected 12/8/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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
5,655In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
3,909In Stock
3,000Expected 14/12/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 6V 5% Uni-directional
Datasheet
7,890In Stock
6,000Expected 13/8/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Unidirectional 1 Channel 6 V SMD/SMT 10.3 V 6.67 V SOD-123-2 35.9 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 60V 5% Uni-directional
Datasheet
14,452In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
Unidirectional 1 Channel 60 V SMD/SMT 96.8 V 66.7 V SOD-123-2 4.1 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 7V 5% Uni-directional
Datasheet
4,091In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
Unidirectional 12 V 8.6 V 30.9 A 370 W + 150 C SMF4L AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Uni-directional
Datasheet
100In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Unidirectional 1 Channel 7.5 V SMD/SMT 12.9 V 8.33 V SOD-123-2 28.7 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 70V 5% Uni-directional
Datasheet
3,201In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Unidirectional 1 Channel 70 V SMD/SMT 113 V 77.8 V SOD-123-2 3.5 A 400 W 30 kV 30 kV - 55 C + 150 C SMF4L AEC-Q100 Reel, Cut Tape, MouseReel