B72210S2511K101 EPCOS Varistor (Other) In Stock
The EPCOS B72210S2511K101 is a flame-proof leaded disk varistor rated for 510 Vrms AC operation with a maximum surge current of 3500 A (8/20 µs) and 80 J energy absorption. It provides robust transient overvoltage protection in through-hole PCB designs. Available worldwide with an 8-week lead time.
- Manufacturer
- EPCOS
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- B72210S2511K101 Datasheet PDF
- Category
- Varistor
- Price
- From $0.2190(MOQ 146)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 510 Vrms maximum AC operating voltage with 3500 A peak surge current capability (8/20 µs single pulse) for protection of mains-connected equipment
- 80 J energy absorption capacity in a compact 12 mm x 15 mm through-hole disk package with flame-proof construction
- REACH-compliant and RoHS-compatible (JESD-609 e3) leaded disk varistor suitable for global regulatory compliance in industrial and consumer power products
Applications
The B72210S2511K101 is used as a primary overvoltage protection element on 230 V and 277 V AC mains input circuits in industrial power supplies, motor drives, and home appliances. Its 3500 A surge current rating covers typical lightning-induced transients as defined by IEC 61643-11, protecting downstream switching regulators and control electronics. The flame-proof body construction meets safety requirements for enclosed equipment where thermal runaway risk must be minimised.
Specifications
| Reach Compliance Code | Compliant |
| Factory Lead Time | 8Weeks |
| YTEOL | 7.4 |
| Additional Feature | FLAME PROOF |
| Circuit RMS Voltage-Max | 510V |
| Energy Absorbing Capacity-Max | 80J |
| JESD-609 Code | e3 |
| Mounting Feature | THROUGH HOLE MOUNT |
| Package Height | 15mm |
| Package Length | 12mm |
| Package Shape | DISK PACKAGE |
| Package Style | Radial |
| Package Width | 8mm |
| Packing Method | BULK |
| Rated Power Dissipation (P) | 0.4W |
| Reference Standard | CQC, CSA, UL, VDE |
| Resistor Type | VARISTOR |
| Surface Mount | NO |
| Technology | METAL OXIDE FILM |
| Terminal Finish | Tin (Sn) |
| Terminal Placement | RADIAL |
| Terminal Shape | WIRE |
| Working Voltage | 670V |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.40.40.00 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What surge current and energy absorption levels does the B72210S2511K101 varistor handle?
The B72210S2511K101 handles a single-pulse peak surge current of 3500 A with an 8/20 µs waveform, and absorbs up to 80 J of energy per transient event. These ratings make it suitable for protecting 230 V AC mains circuits against lightning-induced transients and switching surges as specified in IEC 61000-4-5 and IEC 61643-11 standards.
How should the B72210S2511K101 be positioned in an AC mains protection circuit?
For mains transient protection, the B72210S2511K101 is connected in parallel between the live and neutral conductors immediately after the AC input fuse. This placement allows the varistor to clamp voltage transients above its varistor voltage (typically 820 V DC) before they reach downstream components. The 510 Vrms continuous rating provides a comfortable safety margin on 230 V nominal mains with 10% voltage tolerance.
What distinguishes the flame-proof construction of B72210S2511K101 from standard disk varistors?
The flame-proof body of the B72210S2511K101 prevents the varistor casing from igniting adjacent PCB or enclosure materials if the component fails under severe overvoltage conditions exceeding its rated energy of 80 J. This construction meets IEC 60065 and IEC 60950 safety requirements for consumer electronics and industrial equipment, enabling the component to be used in enclosed enclosures without additional fire barrier measures.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 146+ | $0.5726 | $83.60 |
| 250+ | $0.3194 | $79.85 |
| 500+ | $0.3085 | $154.25 |
| 1000+ | $0.2950 | $295.00 |
| 2500+ | $0.2530 | $632.50 |
| 5000+ | $0.2190 | $1095.00 |
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