Circuit Protection
Circuit protection devices safeguard electronic systems against overcurrent, overvoltage, electrostatic discharge (ESD), and transient voltage spikes that can damage sensitive ICs and cause system failures. Octatronics catalogs fuses, TVS diodes, varistors, gas discharge tubes (GDTs), PTC resettable fuses, and ESD suppressors from Littelfuse, Bourns, Vishay, Nexperia, and onsemi.
Explore Circuit Protection Subcategories
Product Series & Base Models
Navigate by model series to compare ordering variants and technical specifications within the Circuit Protection family.
Browse Circuit Protection Products
| PART NUMBER | MANUFACTURER | DESCRIPTION | STOCK | QTY / ACTION |
|---|---|---|---|---|
| SMAJ250CA | Littelfuse | TVS Diode, 400W, 250V, Bidirectional, DO-214AC, SMD | 4,660 | |
| SMAJ250A | Littelfuse | TVS Diode, 400W, 250V, Unidirectional, DO-214AC, SMD | 5,000 | |
| SMAJ220CA | Littelfuse | TVS Diode, 400W, 220V, Bidirectional, DO-214AC, SMT | 10,000 | |
| SMAJ220A | Littelfuse | TVS Diode, 400W, 220V, Unidirectional, DO-214AC, SMD | 8,240 | |
| SMAJ200A | Littelfuse | TVS Diode, 400W, 200V VRWM, Unidirectional, DO-214AC, SMD | 42,920 | |
| SMAJ188CA | Littelfuse | TVS Diode Single Bi-Dir 100V 400W 2-Pin SMA T/R | 5,000 | |
| SMAJ180CA/TR13 | Littelfuse | TVS Diode 180V Bidirectional SMD 400W Peak Pulse Power | 10,000 | |
| SMA6L6.0A | Littelfuse | Trans Voltage Suppressor Diode, 600W, 6V V(RWM), Unidirectional, 1 Element, Silicon, DO-221AC, HALOGEN FREE AND ROHS COMPLIANT, PLASTIC, SMA , 2 PIN | 2,000 | |
| SMA6L5.0A | Littelfuse | Trans Voltage Suppressor Diode, 600W, 5V V(RWM), Unidirectional, 1 Element, Silicon, DO-221AC, HALOGEN FREE AND ROHS COMPLIANT, PLASTIC, SMA , 2 PIN | 11 | |
| SMA6L36A | Littelfuse | Trans Voltage Suppressor Diode, 600W, 36V V(RWM), Unidirectional, 1 Element, Silicon, DO-221AC, HALOGEN FREE AND ROHS COMPLIANT, PLASTIC, SMA , 2 PIN | 12,000 |
Top Circuit Protection Manufacturers
onsemi
onsemi Circuit Protection products are available for part-number review, stock checks, and RFQ support.
403 parts in this category
ROHM
ROHM Circuit Protection products are available for part-number review, stock checks, and RFQ support.
53 parts in this category
TE Connectivity
TE Connectivity Circuit Protection products are available for part-number review, stock checks, and RFQ support.
1 parts in this category
Vishay
Vishay Circuit Protection products are available for part-number review, stock checks, and RFQ support.
730 parts in this category
Nexperia
Nexperia Circuit Protection products are available for part-number review, stock checks, and RFQ support.
310 parts in this categoryPanjit
Panjit Circuit Protection products are available for part-number review, stock checks, and RFQ support.
63 parts in this category
Infineon Technologies
Infineon Technologies Circuit Protection products are available for part-number review, stock checks, and RFQ support.
46 parts in this categoryNXP Semiconductors
NXP Semiconductors Circuit Protection products are available for part-number review, stock checks, and RFQ support.
112 parts in this category
Microchip Technology
Microchip Technology Circuit Protection products are available for part-number review, stock checks, and RFQ support.
13 parts in this category
Texas Instruments
Texas Instruments Circuit Protection products are available for part-number review, stock checks, and RFQ support.
109 parts in this categoryAbout Circuit Protection
Circuit protection is a non-negotiable requirement in every electronic design — from consumer USB ports vulnerable to ESD events to industrial motor drives exposed to lightning-induced surges. Protection devices are selected based on standoff voltage, clamping voltage, response time, peak pulse current, and repetitive surge capability.
This category includes TVS (Transient Voltage Suppressor) diodes for ESD and surge clamping, MOVs (Metal Oxide Varistors) for AC line protection, GDTs (Gas Discharge Tubes) for telecom surge protection, fuses (blade, cartridge, SMD, and resettable PPTC), and integrated ESD protection arrays for high-speed data interfaces (USB, HDMI, Ethernet).
On Octatronics, search protection devices by type, voltage rating, response time, and package. Compare protection levels across manufacturers and submit RFQs for AEC-Q qualified and commercial-grade components.
Related Applications
Discover industry applications that commonly use Circuit Protection components.
Data Center
Power conversion, protection, and interconnect components for data-center racks and compute boards.
AI Server Power
Power-delivery components for AI server input protection, intermediate conversion, and accelerator rails.
Automotive Lighting
LED power, matrix control, sensing, and protection components for vehicle lighting.
Automotive Power Management
Protection, conversion, regulation, and supervision components for automotive ECU power.
Battery Management Systems
Cell measurement, balancing, isolation, and protection components for battery-management systems.
Energy Storage
Power-conversion and protection components for battery energy-storage systems.
LED & Lighting
Power-conversion, constant-current, dimming, and protection components for LED lighting.
Smart Appliances
Motor-control, sensing, power, and connected-controller components for smart appliances.
UV & Specialty Lighting
Constant-current, thermal-monitoring, and control components for UV and specialty LED systems.
Vehicle Networking
Transceiver, PHY, gateway, and protection components for in-vehicle networks.
Frequently Asked Questions
Octatronics can help source a wide range of Circuit Protection from major manufacturers worldwide, including active production parts, long-lead-time items, and hard-to-find components.
Yes. You can submit a single part number or upload a BOM with multiple parts. Our team will check stock, date code, lead time, and pricing for each item.
Availability depends on the specific part number and supplier source. For important orders, buyers can request packaging photos, labels, date code information, and traceability documents.
Yes. Octatronics supports sourcing for active, end-of-life, obsolete, and hard-to-find components through our global supplier network.
Please provide the part number, manufacturer, quantity, required date code, target price, delivery country, and whether original packaging or COC is required.