Circuit Protection

Electronic component circuit protection uses specific devices and strategies to shield circuits from damage like overcurrent, overvoltage, short circuits, and electrostatic discharge (ESD), ensuring safety, reliability, and longevity by quickly interrupting or diverting harmful electrical energy before it damages sensitive components. These protectors act as a defense system, using components like fuses, varistors, TVS diodes, and PTC thermistors to maintain optimal operating conditions. 

Key Threats Protected Against:

• Overcurrent/Overload: Too much current flows (e.g., motor failure), damaging components.
• Overvoltage: Voltage spikes (e.g., lightning, load dumps) exceed safe levels.
• Electrostatic Discharge (ESD): Rapid discharge of static electricity.
• Overtemperature: Excessive heat buildup. 

Common Protection Devices:

• Fuses & PTC Thermistors: Blow or increase resistance to stop current flow during overcurrent events.
• Varistors & TVS Diodes (Transient Voltage Suppressors): Clamp or divert excess voltage during surges.
• Gas Discharge Tubes (GDTs): Divert high-energy transients, often used for lightning protection.
• Circuit Breakers (Electronic): Offer precise tripping and faster response than mechanical breakers. 

JVR Series (up to 85℃)

JVT Series (up to 125℃)

Multilayer Varistors

Fuzetec’s FCMOV with PPTC

Surface Mount (SMD) PPTC

Low Ohms Surface Mount (SMD) PPTC

Radial Leaded PPTC

Battery Strap Mount PPTC

Fuzetec’s FCMOV with PPTC

FCMOV Advanced 14 Series

FCMOV Advanced 20 Series

1.5KE___, 1.5KE___A, 1.5KE___C, 1.5KE___CA Series

1.5SMC6.8 through 1.5SMC440, A, C, CA Series

5.0SMDJ___A, 5.0SMDJ___CA Series

P4KE__, P4KE___A, P4KE___C, P4KE___CA Series

P6KE___A, P6KE___C, P6KE___CA Series

P6SMB___, P6SMB___A, P6SMB___CA Series

SA___, SA___A, SA___C, SA___CA Series

SMAJ___, SMAJ___A, SMAJ___C, SMAJ___CA Series

SMBJ___, SMBJ___A, SMBJ___C, SMBJ___CA Series

SMCJ___, SMCJ___A, SMCJ___C, SMCJ___CA Series

SMDJ___, SMDJ___A, SMDJ___C, SMDJ___CA Series

SMF___A, SMF___CA Series

SM4F___A, SM4F___CA Series