B72207S0200K101 EPCOS Varistor (Other) In Stock
B72207S0200K101 is a radial-leaded metal oxide varistor (MOV) by EPCOS rated at 20 V RMS for transient voltage suppression. Key specs: 1.3 J energy absorption capacity, 9 mm disk diameter, through-hole mount, REACH-compliant. Available from stock with worldwide shipping.
- Manufacturer
- EPCOS
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- B72207S0200K101 Datasheet PDF
- Category
- Varistor
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 20 V RMS maximum circuit voltage rating suitable for low-voltage transient suppression on 12 V and 24 V DC bus lines
- 1.3 J energy absorption capacity handles significant surge events in compact radial package
- Disk-style radial through-hole package with 9 mm diameter and 11 mm height for easy PCB integration
- EPCOS SIOV series metal oxide varistor technology provides fast clamping response time in nanoseconds
- REACH-compliant and RoHS-compatible construction for global regulatory compliance
Applications
The EPCOS B72207S0200K101 varistor is used in low-voltage transient protection circuits for consumer electronics, industrial sensors, and communication equipment operating on 12 V to 24 V DC supply lines. Its 20 V RMS rating and 1.3 J energy absorption make it ideal for protecting microcontroller inputs, relay coils, and signal interfaces from electrostatic discharge and inductive kickback transients. The radial through-hole package simplifies board mounting in power supply entry stages and relay-driver protection networks.
Specifications
| Reach Compliance Code | Compliant |
| YTEOL | 7.25 |
| Circuit RMS Voltage-Max | 20V |
| Energy Absorbing Capacity-Max | 1.3J |
| JESD-609 Code | e3 |
| Mounting Feature | THROUGH HOLE MOUNT |
| Package Height | 11mm |
| Package Length | 9mm |
| Package Shape | DISK PACKAGE |
| Package Style | Radial |
| Package Width | 3.6mm |
| Packing Method | BULK |
| Rated Power Dissipation (P) | 0.02W |
| Reference Standard | CQC; IEC; UL; VDE |
| Resistor Type | VARISTOR |
| Surface Mount | NO |
| Technology | METAL OXIDE |
| Terminal Finish | Tin (Sn) |
| Terminal Placement | RADIAL |
| Terminal Shape | WIRE |
| Working Voltage | 26V |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.40.40.00 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for B72207S0200K101:
suggested
Frequently Asked Questions
What voltage and energy ratings make B72207S0200K101 suitable for 24 V DC bus protection?
The B72207S0200K101 is rated at a maximum circuit RMS voltage of 20 V and can absorb up to 1.3 J of transient energy. On a 12 V or 24 V DC bus, this energy absorption capacity is sufficient to clamp inductive load switching transients from relay coils and motor drivers, protecting downstream CMOS and microcontroller circuits from voltage spikes exceeding the device clamping threshold.
How fast does B72207S0200K101 respond to transient voltage events?
Metal oxide varistors like the B72207S0200K101 respond to voltage transients within nanoseconds, typically less than 25 ns for the initial clamping response. This speed makes them effective against fast-rise ESD pulses and inductive switching transients, which commonly have rise times of 1 µs to 100 µs on 20 V class signal and power distribution lines.
What are the physical dimensions of B72207S0200K101 and how should it be mounted on a PCB?
The B72207S0200K101 is housed in a disk-style radial package measuring 9 mm in length (diameter) and 11 mm in height. It uses through-hole mounting with radial leads, requiring drilled PCB pads placed at the standard EPCOS SIOV 7.5 mm or 10 mm lead pitch. Designers should verify the exact lead spacing from the datasheet before creating PCB footprints.
When should B72207S0200K101 be chosen over a TVS diode for circuit protection?
The B72207S0200K101 MOV is preferred over a TVS diode when the circuit must absorb 1.3 J of energy from repeated surge events without degradation, because TVS diodes are typically rated for only a few millijoules on a single pulse. However, the MOV has a wider clamping voltage tolerance, so TVS diodes are more precise for tight clamping below 30 V in single-event protection applications.
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