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

ST Series Circuit Protection

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

Types of Circuit Protection

List Images

Results: 44

Applied Filters:

Series = ST

Reset All

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 Auto ESD SOD323-2 24V

STS321240B100AH
Eaton Electronics
1: $0.765
4,510In Stock
New Product

Mfr. Part No.
STS321240B100AH

Mouser Part No
504-STS321240B100AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2 24V

Learn More

Datasheet

4,510In Stock

Cut Tape

$0.765

$0.481

$0.306

$0.245

Reel

$0.174

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,24V

STS321240U401AH
Eaton Electronics
1: $0.612
9,100In Stock
New Product

Mfr. Part No.
STS321240U401AH

Mouser Part No
504-STS321240U401AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,24V

Learn More

Datasheet

9,100In Stock

Cut Tape

$0.612

$0.436

$0.22

$0.179

Reel

$0.111

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,36V

STS321360U351AH
Eaton Electronics
1: $0.612
9,100In Stock
New Product

Mfr. Part No.
STS321360U351AH

Mouser Part No
504-STS321360U351AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,36V

Learn More

Datasheet

9,100In Stock

Cut Tape

$0.612

$0.436

$0.22

$0.179

Reel

$0.111

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,3.3V

STS521033B101AH
Eaton Electronics
1: $0.681
16,509In Stock
New Product

Mfr. Part No.
STS521033B101AH

Mouser Part No
504-STS521033B101AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,3.3V

Learn More

Datasheet

16,509In Stock

Cut Tape

$0.681

$0.477

$0.234

$0.195

Reel

$0.089

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 8,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,5.0V

STS521050B181AH
Eaton Electronics
1: $0.598
22,215In Stock
New Product

Mfr. Part No.
STS521050B181AH

Mouser Part No
504-STS521050B181AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,5.0V

Learn More

Datasheet

22,215In Stock

Cut Tape

$0.598

$0.417

$0.204

$0.171

Reel

$0.078

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 8,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,5.0V

STS521050U751AH
Eaton Electronics
1: $0.653
23,463In Stock
New Product

Mfr. Part No.
STS521050U751AH

Mouser Part No
504-STS521050U751AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,5.0V

Learn More

Datasheet

23,463In Stock

Cut Tape

$0.653

$0.455

$0.222

$0.186

Reel

$0.085

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 8,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,7.0V

STS521070U701AH
Eaton Electronics
1: $0.653
23,370In Stock
New Product

Mfr. Part No.
STS521070U701AH

Mouser Part No
504-STS521070U701AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,7.0V

Learn More

Datasheet

23,370In Stock

Cut Tape

$0.653

$0.455

$0.222

$0.186

Reel

$0.085

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 8,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,12V

STS521120U351AH
Eaton Electronics
1: $0.695
24,100In Stock
New Product

Mfr. Part No.
STS521120U351AH

Mouser Part No
504-STS521120U351AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,12V

Learn More

Datasheet

24,100In Stock

Cut Tape

$0.695

$0.495

$0.242

$0.202

Reel

$0.093

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 8,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,36V

STS521360U201AH
Eaton Electronics
1: $0.695
24,000In Stock
New Product

Mfr. Part No.
STS521360U201AH

Mouser Part No
504-STS521360U201AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD523-2,36V

Learn More

Datasheet

24,000In Stock

Cut Tape

$0.695

$0.495

$0.242

$0.202

Reel

$0.093

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 8,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,15V

STS321150U332AH
Eaton Electronics
1: $0.695
9,100In Stock
New Product

Mfr. Part No.
STS321150U332AH

Mouser Part No
504-STS321150U332AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,15V

Learn More

Datasheet

9,100In Stock

Cut Tape

$0.695

$0.431

$0.272

$0.214

Reel

$0.154

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Fuse Holder BUSS KNOB ASSEMBLY

BK/STM
Eaton Electronics
1: $13.08
22In Stock

Mfr. Part No.
BK/STM

Mouser Part No
504-BK/STM

Eaton Electronics

Fuse Holder BUSS KNOB ASSEMBLY

Datasheet

22In Stock

$13.08

$10.90

$10.08

$8.38

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,5.0V

STS321050U182AH
Eaton Electronics
1: $0.612
9,000Expected 11/5/2026
New Product

Mfr. Part No.
STS321050U182AH

Mouser Part No
504-STS321050U182AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,5.0V

Learn More

Datasheet

9,000Expected 11/5/2026

Cut Tape

$0.612

$0.436

$0.22

$0.179

Reel

$0.111

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

Resettable Fuses - PPTC PTC 24V POLYFUSE STRAP TYPE 2.00A

24ST200U
Littelfuse
20,000: $0.543
Non-Stocked

Mfr. Part No.
24ST200U

Mouser Part No
576-24ST200U

Littelfuse

Resettable Fuses - PPTC PTC 24V POLYFUSE STRAP TYPE 2.00A

Learn More

Datasheet

Non-Stocked

$0.543

Min.: 20,000
Mult.: 500

Fuse Holder BUSS KNOB ASSEMBLY

STM
Eaton Electronics
100: $17.76
Non-Stocked Lead-Time 8 Weeks

Mfr. Part No.
STM

Mouser Part No
504-STM

Eaton Electronics

Fuse Holder BUSS KNOB ASSEMBLY

Datasheet

Non-Stocked Lead-Time 8 Weeks

$17.76

$15.97

$14.72

$14.09

Min.: 100
Mult.: 100

ESD Protection Diodes / TVS Diodes Auto ESD SOT23-3,24V

STS232240B151AH
Eaton Electronics
9,000: $0.163
Non-Stocked Lead-Time 12 Weeks
New Product

Mfr. Part No.
STS232240B151AH

Mouser Part No
504-STS232240B151AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOT23-3,24V

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$0.163

$0.154

Min.: 9,000
Mult.: 3,000

Reel: 3,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,24V

STS321240B301AH
Eaton Electronics
1: $0.57
Non-Stocked Lead-Time 12 Weeks
New Product

Mfr. Part No.
STS321240B301AH

Mouser Part No
504-STS321240B301AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,24V

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$0.57

$0.378

$0.222

$0.168

Reel

$0.124

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,12V

STS321120B100AH
Eaton Electronics
300,000: $0.139
Non-Stocked Lead-Time 24 Weeks
New Product

Mfr. Part No.
STS321120B100AH

Mouser Part No
504-STS321120B100AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes Auto ESD SOD323-2,12V

Learn More

Datasheet

Non-Stocked Lead-Time 24 Weeks

Cut Tape

$0.139

Min.: 300,000
Mult.: 3,000

Reel: 3,000

Fuse Holder STI

STI
Eaton Electronics
1: $10.87
Non-Stocked Lead-Time 8 Weeks

Mfr. Part No.
STI

Mouser Part No
504-STI

Eaton Electronics

Fuse Holder STI

Learn More

Datasheet

Non-Stocked Lead-Time 8 Weeks

$10.87

$9.06

$8.37

$6.96

View

Min.: 1
Mult.: 1

Fuse Holder FUSE COVER ASSEMBLY

ST-COVER
Bussmann / Eaton
1: $15.51
Non-Stocked

Mfr. Part No.
ST-COVER

Mouser Part No
504-ST-COVER

Bussmann / Eaton

Fuse Holder FUSE COVER ASSEMBLY

Datasheet

Non-Stocked

$15.51

$14.41

$11.08

$9.42

View

Min.: 1
Mult.: 1

ST Series Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support