Circuit Protection – Mouser Japan

.hide-partial { max-height: none; } .show-more { display: none; }

Connected Drug Delivery Device Ecosystem Solutions

Littelfuse features a wide portfolio of products used to build and enhance drug delivery systems. These drug delivery systems include auto-injectors, continuous glucose monitors, insulin pumps, drug delivery pens, and wearable injectors. Products offered by Littelfuse for these applications include detect switches, plunger position sensors, microcontrollers, thermistors, TVS diode arrays, gate drivers, and fuses.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 190

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

ESD Protection Diodes / TVS Diodes 400W 33V 5% Bi-Directional

SMAJ33CA
Littelfuse
1: ¥79.7
1,687In Stock
140,000On Order

Mfr. Part #
SMAJ33CA

Mouser Part #
576-SMAJ33CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 33V 5% Bi-Directional

Learn More

Datasheet

1,687In Stock

140,000On Order

Cut Tape

¥79.7

¥43.2

¥32.4

¥25.6

View

Reel

¥14.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 400V 5% Uni-Directional

SMAJ400A
Littelfuse
1: ¥131.2
113In Stock
5,000On Order

Mfr. Part #
SMAJ400A

Mouser Part #
576-SMAJ400A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 400V 5% Uni-Directional

Learn More

Datasheet

113In Stock

5,000On Order

Cut Tape

¥131.2

¥69.1

¥60.8

¥46.5

View

Reel

¥32.4

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 400V 5% Bi-Directional

SMAJ400CA
Littelfuse
1: ¥151.2
563In Stock
10,000Expected 10/28/2026

Mfr. Part #
SMAJ400CA

Mouser Part #
576-SMAJ400CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 400V 5% Bi-Directional

Learn More

Datasheet

563In Stock

10,000Expected 10/28/2026

Cut Tape

¥151.2

¥78.2

¥60.6

¥46.5

Reel

¥34.9

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 43V 5% Uni-Directional

SMAJ43A
Littelfuse
1: ¥78.1
17,159In Stock

Mfr. Part #
SMAJ43A

Mouser Part #
576-SMAJ43A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 43V 5% Uni-Directional

Learn More

Datasheet

17,159In Stock

Cut Tape

¥78.1

¥37.5

¥29.9

¥22.3

Reel

¥14.3

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 43V 5% Bi-Directional

SMAJ43CA
Littelfuse
1: ¥76.4
12,626In Stock
10,000Expected 11/16/2026

Mfr. Part #
SMAJ43CA

Mouser Part #
576-SMAJ43CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 43V 5% Bi-Directional

Learn More

Datasheet

12,626In Stock

10,000Expected 11/16/2026

Cut Tape

¥76.4

¥35.4

¥29.1

¥23.9

Reel

¥14.3

¥14.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 440V 5% Uni-Directional

SMAJ440A
Littelfuse
1: ¥103
6,772In Stock

Mfr. Part #
SMAJ440A

Mouser Part #
576-SMAJ440A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 440V 5% Uni-Directional

Learn More

Datasheet

6,772In Stock

Cut Tape

¥103

¥46.7

¥41

¥32.4

Reel

¥32.4

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 45V 5% Uni-Directional

SMAJ45A
Littelfuse
1: ¥71.4
11,266In Stock
10,000Expected 1/19/2027

Mfr. Part #
SMAJ45A

Mouser Part #
576-SMAJ45A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 45V 5% Uni-Directional

Learn More

Datasheet

11,266In Stock

10,000Expected 1/19/2027

Cut Tape

¥71.4

¥35.4

¥27.6

¥21.3

Reel

¥13.6

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 45V 5% Bi-Directional

SMAJ45CA
Littelfuse
1: ¥79.7
677In Stock
15,000On Order

Mfr. Part #
SMAJ45CA

Mouser Part #
576-SMAJ45CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 45V 5% Bi-Directional

Learn More

Datasheet

677In Stock

15,000On Order

Cut Tape

¥79.7

¥43.4

¥31.1

¥24.6

View

Reel

¥14.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 48V 5% Uni-Directional

SMAJ48A
Littelfuse
1: ¥83.1
3,619In Stock
25,000On Order

Mfr. Part #
SMAJ48A

Mouser Part #
576-SMAJ48A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 48V 5% Uni-Directional

Learn More

Datasheet

3,619In Stock

25,000On Order

Cut Tape

¥83.1

¥39.4

¥32.1

¥23.9

Reel

¥15.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 48V 5% Bi-Directional

SMAJ48CA
Littelfuse
1: ¥84.7
1,630In Stock
10,000Expected 2/3/2027

Mfr. Part #
SMAJ48CA

Mouser Part #
576-SMAJ48CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 48V 5% Bi-Directional

Learn More

Datasheet

1,630In Stock

10,000Expected 2/3/2027

Cut Tape

¥84.7

¥43.7

¥32.9

¥24.6

¥18.3

Reel

¥14.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 51V 5% Bi-Directional

SMAJ51CA
Littelfuse
1: ¥76.4
7,686In Stock
10,000Expected 12/3/2026

Mfr. Part #
SMAJ51CA

Mouser Part #
576-SMAJ51CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 51V 5% Bi-Directional

Learn More

Datasheet

7,686In Stock

10,000Expected 12/3/2026

Cut Tape

¥76.4

¥37.5

¥29.2

¥22.8

View

Reel

¥14.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 58V 5% Uni-Directional

SMAJ58A
Littelfuse
1: ¥56.5
1,924In Stock
230,000On Order

Mfr. Part #
SMAJ58A

Mouser Part #
576-SMAJ58A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 58V 5% Uni-Directional

Learn More

Datasheet

1,924In Stock

230,000On Order

Cut Tape

¥56.5

¥41.4

¥29.1

¥22.4

Reel

¥13.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 6V 5% Bi-Directional

SMAJ6.0CA
Littelfuse
1: ¥84.7
2,841In Stock
20,000Expected 2/17/2027

Mfr. Part #
SMAJ6.0CA

Mouser Part #
576-SMAJ6.0CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 6V 5% Bi-Directional

Learn More

Datasheet

2,841In Stock

20,000Expected 2/17/2027

Cut Tape

¥84.7

¥45.2

¥32.6

¥24.9

¥23.3

Reel

¥14.9

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 6.5V 5% Bi-Directional

SMAJ6.5CA
Littelfuse
1: ¥79.7
3,837In Stock
30,000On Order

Mfr. Part #
SMAJ6.5CA

Mouser Part #
576-SMAJ6.5CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 6.5V 5% Bi-Directional

Learn More

Datasheet

3,837In Stock

30,000On Order

Cut Tape

¥79.7

¥35.4

¥30.7

¥23.1

View

Reel

¥14.9

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 60V 5% Uni-Directional

SMAJ60A
Littelfuse
1: ¥81.4
7,426In Stock
50,000On Order

Mfr. Part #
SMAJ60A

Mouser Part #
576-SMAJ60A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 60V 5% Uni-Directional

Learn More

Datasheet

7,426In Stock

50,000On Order

Cut Tape

¥81.4

¥42.5

¥31.7

¥23.9

Reel

¥15.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 64V 5% Bi-Directional

SMAJ64CA
Littelfuse
1: ¥76.4
13,906In Stock

Mfr. Part #
SMAJ64CA

Mouser Part #
576-SMAJ64CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 64V 5% Bi-Directional

Learn More

Datasheet

13,906In Stock

Cut Tape

¥76.4

¥35.4

¥31.1

¥23.3

Reel

¥17.3

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 7V 5% Uni-Directional

SMAJ7.0A
Littelfuse
1: ¥69.8
4,525In Stock
5,000Expected 1/18/2027

Mfr. Part #
SMAJ7.0A

Mouser Part #
576-SMAJ7.0A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7V 5% Uni-Directional

Learn More

Datasheet

4,525In Stock

5,000Expected 1/18/2027

Cut Tape

¥69.8

¥36.5

¥27.6

¥21.4

Reel

¥13

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 7V 5% Bi-Directional

SMAJ7.0CA
Littelfuse
1: ¥79.7
7,656In Stock

Mfr. Part #
SMAJ7.0CA

Mouser Part #
576-SMAJ7.0CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7V 5% Bi-Directional

Learn More

Datasheet

7,656In Stock

Cut Tape

¥79.7

¥37.5

¥30.4

¥23.4

View

Reel

¥14.9

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Uni-Directional

SMAJ7.5A
Littelfuse
1: ¥78.1
6,245In Stock

Mfr. Part #
SMAJ7.5A

Mouser Part #
576-SMAJ7.5A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Uni-Directional

Learn More

Datasheet

6,245In Stock

Cut Tape

¥78.1

¥35.9

¥29.9

¥22.4

Reel

¥13.3

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Bi-Directional

SMAJ7.5CA
Littelfuse
1: ¥79.7
4,238In Stock
10,000Expected 1/26/2027

Mfr. Part #
SMAJ7.5CA

Mouser Part #
576-SMAJ7.5CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 7.5V 5% Bi-Directional

Learn More

Datasheet

4,238In Stock

10,000Expected 1/26/2027

Cut Tape

¥79.7

¥35.4

¥31.1

¥23.3

Reel

¥16.3

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 70V 5% Uni-Directional

SMAJ70A
Littelfuse
1: ¥69.8
297In Stock
50,000On Order

Mfr. Part #
SMAJ70A

Mouser Part #
576-SMAJ70A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 70V 5% Uni-Directional

Learn More

Datasheet

297In Stock

50,000On Order

Cut Tape

¥69.8

¥45.7

¥28.6

¥22.3

View

Reel

¥13.6

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 70V 5% Bi-Directional

SMAJ70CA
Littelfuse
1: ¥79.7
9,617In Stock
5,000Expected 9/21/2026

Mfr. Part #
SMAJ70CA

Mouser Part #
576-SMAJ70CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 70V 5% Bi-Directional

Learn More

Datasheet

9,617In Stock

5,000Expected 9/21/2026

Cut Tape

¥79.7

¥35.4

¥31.1

¥23.3

View

Reel

¥14.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 75V 5% Uni-Directional

SMAJ75A
Littelfuse
1: ¥71.4
16,680In Stock

Mfr. Part #
SMAJ75A

Mouser Part #
576-SMAJ75A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 75V 5% Uni-Directional

Learn More

Datasheet

16,680In Stock

Cut Tape

¥71.4

¥35.4

¥27.9

¥21.9

Reel

¥15.1

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 75V 5% Bi-Directional

SMAJ75CA
Littelfuse
1: ¥81.4
999In Stock
5,000Expected 11/16/2026

Mfr. Part #
SMAJ75CA

Mouser Part #
576-SMAJ75CA

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 75V 5% Bi-Directional

Learn More

Datasheet

999In Stock

5,000Expected 11/16/2026

Cut Tape

¥81.4

¥42.5

¥31.7

¥23.9

¥23.3

Reel

¥14.1

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

ESD Protection Diodes / TVS Diodes 400W 78V 5% Uni-Directional

SMAJ78A
Littelfuse
1: ¥78.1
6,732In Stock

Mfr. Part #
SMAJ78A

Mouser Part #
576-SMAJ78A

Littelfuse

ESD Protection Diodes / TVS Diodes 400W 78V 5% Uni-Directional

Learn More

Datasheet

6,732In Stock

Cut Tape

¥78.1

¥35.4

¥29.9

¥22.8

Reel

¥15.1

View

MouseReel Available

Min.: 1
Mult.: 1

: 5,000