TDK B722 Series Metal Oxide Varistor, 84J 320V ac

The TDK B722 Series is a radial leaded, round-shaped metal oxide varistor (MOV) from the StandarD family, designed to protect sensitive electronic circuits from transient voltage spikes. Its wide operating voltage range of 11VRMS to 1100VRMS makes it versatile for various applications, serving as either a control component to optimise operating conditions or as a protective element against excessive voltage transients. The device's voltage-dependent characteristics allow it to respond swiftly to high transient surges, clamping the voltage to a safe level and safeguarding downstream components.

This varistor is engineered with high-performance materials, featuring an epoxy resin coating and a UL94V-0 rated flame-retardant body for enhanced safety and durability. It boasts a high surge current rating of up to 8kA and a peak energy absorption capacity of 84J, providing robust protection against electrical disturbances. The component is designed for reliable long-term operation, with an endurance rating of 1000 hours at 85°C and a wide operating temperature range from -40°C to 85°C.

Key Specifications & Approvals

• Voltage Ratings: 320V AC, 420V DC
• Clamping Voltage (Vc Max): 840V
• Peak Surge Current (8/20µs): 4.5kA
• Tolerance: ±10% and ±5% varistor voltage tolerance available
• Certifications: Approved to UL, CSA, VDE, CQC (S05/07, S10/S14, S20), and IEC standards, ensuring compliance for international markets and industrial applications.

Compact and reliable, this disc-type varistor (14mm case style) is a critical component for enhancing the resilience and longevity of electronic systems in demanding environments.