TDK B722 Series 140J 250V ac Varistor

The TDK B722 StandarD series is a range of round-shaped, radial-leaded SIOV metal oxide varistors. These components feature a wide operating voltage range from 11V_RMS to 1100V_RMS, making them highly versatile for numerous electronic applications.

B722 series varistors function as control or compensation elements in circuits, either to establish optimal operating conditions or to provide robust protection against excessive transient voltages. Their voltage-dependent characteristics enable them to effectively clamp and absorb high transient voltage spikes, safeguarding sensitive downstream components.

Key Features & Specifications

The varistors boast high surge current ratings of up to 8kA and a peak energy handling capability that spans from 0.3J to 410J, with this specific model rated at 140J. They are approved to major international safety standards, including UL, CSA, VDE, CQC (covering S05/07, S10/S14, S20 variants), and IEC.

Designed for reliable performance in demanding environments, they offer an operating temperature range of -40°C to +85°C and are tested for an endurance of 1000 hours at 85°C. They are available with a varistor voltage tolerance of ±10% or ±5%. The components are epoxy resin coated and carry a UL94V-0 flame-retardant rating for enhanced safety.

Technical Data

• AC Voltage Rating (V_AC): 250V
• DC Voltage Rating (V_DC): 320V
• Clamping Voltage (Vc Max): 650V
• Varistor Type: Metal Oxide Varistor (MOV)
• Case Style: Disc, 20mm diameter
• Peak Surge Current (8/20µs): 8kA
• Peak Energy (10/1000µs): 140J
• Weight: 8 grams
• Dimensions: 43mm (H) x 33mm (W) x 15mm (D)

Ideal for industrial and safety-critical applications, the TDK B722 varistor is a dependable solution for transient voltage suppression and circuit protection.