
TVS - Varistors, MOVs
TVS - Varistors, MOVs: Robust Circuit Protection Against Voltage Surges
Definition:
TVS (Transient Voltage Suppression) devices, including varistors and MOVs (Metal Oxide Varistors), are essential components in circuit protection, designed to safeguard sensitive electronics from voltage spikes and transient surges. These devices rapidly clamp excessive voltage, diverting harmful energy away from critical circuits to prevent damage caused by lightning strikes, electrostatic discharge (ESD), or inductive load switching.
Types of Products in This Category:
1. Standard Varistors/MOVs: Cost-effective, general-purpose solutions for moderate surge protection in consumer electronics, power supplies, and industrial equipment.
2. High-Energy MOVs: Engineered for heavy-duty applications (e.g., power distribution systems), capable of absorbing large surge currents.
3. Surface-Mount (SMD) Varistors: Compact designs for PCB protection in space-constrained devices like IoT modules or mobile gadgets.
4. Automotive-Grade TVS Varistors: AEC-Q200 compliant, ensuring reliability against load dumps in vehicles.
5. Low-Clamping Voltage TVS Devices: Precision protection for ultra-sensitive ICs, with fast response times (<1ns).
Purchasing Recommendations:
- Voltage Rating: Select a varistor with a maximum continuous operating voltage (VRMS/VDC) exceeding your circuit s normal operating voltage by 20-30%.
- Energy Absorption: Match the surge current rating (e.g., 8/20 s waveform) to your environment s threat level (e.g., 6kA for industrial vs. 3kA for consumer apps).
- Certifications: Prioritize UL1449 or IEC 61000-4-5 compliance for safety-critical systems.
- Form Factor: For high-density boards, opt for SMD packages; through-hole variants suit high-power scenarios.
Pro Tip: Pair MOVs with thermal fuses or gas discharge tubes (GDTs) in cascaded protection circuits to enhance longevity and fail-safe performance.
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B72214Q0681K101
VARISTOR 1.1KV 6KA DISC 14MM
V68ZC2P
VARISTOR 68V 250A DISC 7MM
V14E50P
VARISTOR 82V 6.5KA DISC 14MM
V420LA10P
VARISTOR 680V 2.5KA DISC 10MM
CV250K14BL1
CV 250 K 14 B L1
AVRL101D6R8GTA
COMMERCIAL GRADE MULTILAYER CHIP
CVQ140K10BL1
CVQ 140VRMS 10MM BULK L1
B72210S2151K101
VARISTOR 240V 3.5KA DISC 10MM
V130LU5CPX2855
VARISTOR 205V 3.5KA DISC 10MM
TMOV20RP320ML4B7
VARISTOR 510V 10KA DISC 20MM
MOV-20D820K
VARISTOR 82V 6.5KA DISC 20MM
ERZ-E11A911CS
VARISTOR 910V 5KA DISC 14MM
V575LC40CP
VARISTOR 910V 6.5KA DISC 14MM
V385LT40CP
VARISTOR 620V 10KA DISC 20MM
B72225M0151M301
25MM, 150V, 20KA, THERMO FUSE TY
V14H30P
VARISTOR 47V 3KA DISC 14MM
ERZ-E14A361S1
VARISTOR DISC 14MM 360V
FBMOV300M
VARISTOR 470V 40KA AXIAL CYLINDR
V56ZS20PX2855
VARISTOR 56V 2KA DISC 20MM
VDRS05C175BSE
VARISTOR 275V 400A DISC 7MM