ISOM3-175-B-L2
TVS Varistor, Hybrid MOV/GDT, 175 V, 225 V, IsoMOV Series, 470 V, Disc 13.2mm
- Manufacturer: BOURNS
- Product type: TVS Varistors
- SVHC: No SVHC (04-Feb-2026)
- Product Range: IsoMOV Series
- Varistor Type: Metal Oxide Varistor (MOV)
- Voltage Rating VAC: 175V
- Voltage Rating VDC: 225V
- Varistor Case Style: Disc 13.2mm
- Clamping Voltage Vc Max: 470V
- Peak Energy (10/1000uS): -
- Operating Temperature Max: 125°C
- Operating Temperature Min: -40°C
- Peak Surge Current @ 8/20µs: 6kA
- Automotive Qualification Standard: -
| Delivery and price | |
|---|---|
| Units per pack | 500 |
| Price | 0.484 € |
| Current stock | 1000+ |
| Lead time | 30 days |
**==> picture [70 x 33] intentionally omitted <==** **----- Start of picture text -----**<br> 2039<br> 8-320<br> 8-320<br>2039<br>**----- End of picture text -----**<br> ## NEW PRODUCT BRIEF ## **Bourns® Fully Integrated Hybrid Protector** lsoMOV" ## **INTRODUCTION** Bourns is pleased to announce its groundbreaking lineup of IsoMOV™ hybrid protection components. By combining the best features of the breakthrough surge performance EdgMOV™ technology with an integrated Gas Discharge Tube (GDT) isolation structure, the IsoMOV™ protector offers high reliability and long life including in certain harsh environments. ## **UNIQUE CONSTRUCTION** The IsoMOV™ protector fully integrates the classic GDT and MOV in a symbiotic relationship, enhancing reliability and performance. In this configuration, the GDT blocks leakage currents through the MOV that would otherwise lead to premature failure of the MOV device, while the MOV prevents the follow-on current (after a surge) that might damage the GDT. ## **FEATURES** - AC voltage ratings: 175 V - 555 V - Nominal surge ratings: 3 kA – 5 kA – 8 kA - -40 °C to +125 °C operation - Low leakage current - Low capacitance - Stable performance over life - UL 1449 Type 4 CA listed - IEC 61051-2/ IEC 61051-1 Certified (TÜV Rheinland) - RoHS compliant* The IsoMOV™ Hybrid Protector Series is an upgrade to nearly any MOV power application where premium performance and/or space savings are valued. The extended temperature range, low leakage and superb energy handling density are especially advantageous to industrial and other applications exposed to high surges. The IsoMOV™ device's unique and graceful end-oflife failure mode quickly and cleanly blows the line fuse, never leaving equipment unprotected and eliminating the need for any indicator circuitry. The IsoMOV™ protector family of products includes three unique series of devices; Model IsoM3, IsoM5 and IsoM8. With nominal surge ratings of 3 kA, 5 kA and 8 kA, these revolutionary new protectors offer performance usually found in larger traditional MOV devices. **==> picture [122 x 91] intentionally omitted <==** **----- Start of picture text -----**<br> MOV<br>GDT MOV<br>**----- End of picture text -----**<br> Using proprietary computer-aided design techniques to model performance, Bourns engineers created the equivalent function of a discrete MOV and GDT in series. After assembly of the core, leads are attached, and the unit is epoxy coated. The result is a familiar radial disc MOV package that is only slightly thicker and of substantially smaller diameter than similarly rated conventional devices. ## **BENEFITS** - Enhanced reliability - Long service life - Improved surge ratings - Suitable for exposed circuits - Increased voltage protection - Ring wave tolerant - Reduced down time/service costs ## **APPLICATIONS** - Critical AC power applications - White goods - Motor drives - AC inverters - LED lighting & signage - Surge Protective Devices (SPDs) ## **CIRCUIT DIAGRAM & SCHEMATIC SYMBOL** _*RoHS Directive 2015/863, Mar 31, 2015 and Annex._ **ISOMOV™ PROTECTOR vs BENCHMARK MOV** (Nominal Surge Rating) **==> picture [164 x 39] intentionally omitted <==** **----- Start of picture text -----**<br> ||||| |---|---|---|---| |Product|10 mm|14 mm|20 mm| |Best-in-Class MOV|2000|3000|5000| |IsoMOV™ Hybrid Protectors|3000|5000|8000| **----- End of picture text -----**<br> In fact, the surge ratings of IsoMOV™ protectors are comparable to the surge ratings of the next larger size of conventional MOV devices. This offers designers the flexibility of choosing an IsoMOV™ protector that is smaller than the MOV option or choosing an IsoMOV™ protector of the same size as the MOV option and enhancing the surge capability of their protection scheme. ## **HOW TO ORDER** ## **IsoM 8 - 320 - B - L2** Model Designator IsoM = IsoMOV™ Hybrid Protection Component Component Inom Rating 3 = 3 kA 5 = 5 kA 8 = 8 kA RMS Voltage See Electrical Characteristics Table Packaging B = Bulk (Standard) R = Reel Pack** Lead Style*** L2 = In-Line Leads (Standard) **Reel Pack option not available for IsoM8 models. ***L1 and L5 lead styles available upon request. **www.bourns.com** 07/21 • e/GDT2106 rT NEW PRODUCT BRIEF ## **Bourns® Fully Integrated Hybrid Protector** IsSoMOV™ ## **ELECTRICAL CHARACTERISTICS[(1)] (@ TA = 25 °C Unless Otherwise Noted)** |**Operating**|**Operating**|**Operating**|**Operating**|**Protection**|**Protection**|**Protection**|**Protection**|**Protection**|**Protection**| |---|---|---|---|---|---|---|---|---|---| |**Max. Continuous**<br>**Operating Voltage**<br>**(MCOV)**||**Max.**<br>**Leakage**<br>**@ MCOV(2)**|**Nominal**<br>**Capacitance**|**Inom (3) (4)**||**Imax**<br>**(4)**|**Ring Wave**<br>**Surge**<br>**IEEE 62.41**|**Max.**<br>**Clamping Voltage**|| |**Vrms**|**Vdc**<br>a|**Adc**<br>a|**20 kHz**|**15 Operations**|**10 Operations**|**1 Operation**|**200 A**<br>~~=~~|**Vc**<br>~~=~~|**Ic**| |**V**<br>175<br>230<br>250<br>275<br>300<br>320<br>175<br>230<br>250<br>275<br>300<br>320<br>385<br>420<br>510<br>555<br>250<br>275<br>300<br>320<br>385<br>420<br>510<br>555<br>Ty|**V**<br>225<br>300<br>320<br>350<br>385<br>415<br>225<br>300<br>320<br>350<br>385<br>415<br>505<br>560<br>670<br>745<br>320<br>350<br>385<br>415<br>505<br>560<br>670<br>745<br>a<br>Ty|**μA**<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>< 10<br>a<br>Ty|**pF**<br>30<br>30<br>30<br>30<br>30<br>30<br>40<br>40<br>40<br>40<br>40<br>40<br>40<br>40<br>40<br>40<br>50<br>50<br>50<br>50<br>50<br>50<br>50<br>50|**A**<br>3,000<br>3,000<br>3,000<br>3,000<br>3,000<br>3,000<br>5,000<br>5,000<br>5,000<br>5,000<br>5,000<br>5,000<br>5,000<br>5,000<br>5,000<br>5,000|**A**<br>8,000<br>8,000<br>8,000<br>8,000<br>8,000<br>8,000<br>8,000<br>8,000|**A**<br>6,000<br>6,000<br>6,000<br>6,000<br>6,000<br>6,000<br>10,000<br>10,000<br>10,000<br>10,000<br>10,000<br>10,000<br>10,000<br>10,000<br>10,000<br>10,000<br>15,000<br>15,000<br>15,000<br>15,000<br>15,000<br>15,000<br>15,000<br>15,000|**Operations**<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>± 250<br>~~=~~|**V**<br>470<br>620<br>675<br>730<br>800<br>875<br>470<br>620<br>675<br>730<br>800<br>875<br>1000<br>1100<br>1300<br>1400<br>675<br>730<br>800<br>875<br>1000<br>1100<br>1300<br>1400<br>~~=~~|**A**<br>50<br>50<br>50<br>50<br>50<br>50<br>100<br>100<br>100<br>100<br>100<br>100<br>100<br>100<br>100<br>100<br>200<br>200<br>200<br>200<br>200<br>200<br>200<br>200| _(1) At delivery AQL 0.65 Level II, DIN ISO 2859._ _(2) Max. leakage limits after life ratings may exceed 10 µA, but will continue to protect at MCOV._ _(3) Inom service life specified at 3-minute time intervals between surges with rated MCOV applied during the entire resting period and 15 minutes after the last surge. (4) Surge profile 8/20 μs per IEC 61000-4-5._ **www.bourns.com** === COPYRIGHT© 2021 • BOURNS, INC. • 07/21 • e/GDT2106 "Bourns" is a registered trademark of Bourns, Inc. in the U.S. and other countries. "IsoMOV" and "EdgMOV" are trademarks of Bourns, Inc. _Tel_ +886-2 256 241 17 **Asia-Pacific:** _Email_ asiacus@bourns.com **Americas:** 10/17 • e/T1714 _Tel_ +1-951 781-5500 _Email_ americus@bourns.com **EMEA:** _Tel_ +36 88 885 877 _Email_ eurocus@bourns.com
Updated at June 6, 2026
Bourns, Inc. is a globally recognized manufacturer of high-reliability electronic components, headquartered in Riverside, California. Renowned for its engineering excellence, the company delivers critical solutions across a diverse range of demanding markets, including automotive, industrial, consumer electronics, telecommunications, and medical equipment. The Bourns product portfolio is anchored by an industry-leading selection of passive components and circuit protection devices. The brand is particularly dominant in magnetic components, offering thousands of high-performance power inductors, alongside specialized RF and toroidal inductors engineered for optimized power management and signal integrity. Equally prominent is their comprehensive suite of circuit protection solutions. This robust lineup features a vast array of standard and resettable fuses, transient voltage suppressors (including TVS varistors and diodes), and gas discharge tubes (GDTs) designed to rigorously safeguard sensitive electronics against overvoltage and overcurrent faults. Beyond its core passives and protection technologies, Bourns manufactures highly effective EMC and RFI suppression components, such as common mode chokes and power line filters. The company's offering also extends into discrete semiconductors and power management, including Schottky diodes, fast recovery rectifiers, bridge rectifiers, and board-level transformers. This expansive breadth of quality components provides design engineers with a trusted foundation for developing resilient, efficient, and long-lasting electronic systems.
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