# TVS Varistor, 275 V, 369 V, SM7, 710 V, SMD, Metal Oxide Varistor (MOV)

![Product image](https://novapart.co/image/farnell:2383262/)

**URL**: https://novapart.co/products/V275SM7/tvs-varistor-275-v-369-sm7-710-smd-metal-oxide-mov
**SKU**: V275SM7
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Varistors
**Price**: €0.8870
**Stock**: 10+
**Lead Time**: 113 days (indicative)

## Description

Voltage Rating VAC:275V; Voltage Rating V DC:369V; Product Range:SM7 Series; Clamping Voltage Vc Max:710V; Varistor Case Style:SMD; Varistor Type:Metal Oxide Varistor (MOV); Peak Surge Current @

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (17-Dec-2014) |
| Product Range | SM7 |
| Varistor Type | Metal Oxide Varistor (MOV) |
| Voltage Rating Vac | 275V |
| Voltage Rating Vdc | 369V |
| Varistor Case Style | SMD |
| Clamping Voltage Vc Max | 710V |
| Peak Energy (10/1000Us) | 23J |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
| Peak Surge Current @ 8/20Μs | 1.2kA |
| Automotive Qualification Standard | - |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:2383262/)

**Metal-Oxide Varistors (MOVs)** Surface Mount Varistors > SM7 Series 

SM7 Varistor Series ~~|__|~~ **RoHS** ~~@ SAX~~ ~~**Description**~~ The Littelfuse SM7 is a plastic-encapsulated surface mount MOV in a PPS material molded package with tin-plated terminal which is fully qualified in lead free soldering and available for both reflow and wave soldering process. SM7 is constructed with 7mm varistor element disc. Its maximum operating ambient temperature is 85ºC with peak pulse current of 1200A. ~~**Features**~~ fay ~~LP~~ ~~**o**~~ • Electrical equivalent • Good solderability to leaded types • Available in tape ~~Lo~~ ~~**Agency Approvals**~~ LA/ZA series and reel 

   - Available in tape and reel 

- AC Voltage Rating 50 to 510VAC rms 

- Application of AC power meters 

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Agency Agency Approval Agency File Number<br>Wi UL1449 E320116<br>Additional Information<br>a<br>Datasheet Resources Samples<br>**----- End of picture text -----**<br>


- No De-Rating up • Lead free and to 85°C ambient RoHS compliant 

|~~**Absolute Maximum Ratings**~~<br>~~LT~~|
|---|
|• For ratings of individual members of a series, see Device Ratings and Specifications chart|
|**Continuous**<br>**SM7 Series**<br>**Units**<br>**Steady State Applied Voltage:**<br>~~LCC~~<br>~~CCC~~|
|AC Voltage Range (VM(AC)RMS)<br>50 to 510<br>V<br>DC Voltage Range (VM(DC))<br>68 to 675<br>V<br>**Transients:**<br>Peak Pulse Current (ITM)<br>For 8/20µs Current Wave (See Figure 2)<br>1200<br>A<br>Single Pulse Energy Range<br>~~a~~<br>~~Pe~~<br>~~a~~|
|For 10/1000µs Current Wave (WTM)<br>10 to 40<br>J|
|Operating Ambient Temperature Range (TA)<br>-40 to +85<br>OC|
|Storage Temperature Range (TSTG)<br>-40 to +125<br>OC<br>~~|~~|
|Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current<br><0.01<br>%/OC|
|Hi-Pot Encapsulation (COATING Isolation Voltage Capability)<br>(DielectricmustwithstandindicatedDCvoltageforoneminute per MIL-STD 202,Method 301)<br>2500<br>V|
|COATING Insulation Resistance<br>1000<br>MΩ<br>~~a~~<br>~~Po~~|



**CAUTION:** Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. 

© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/09/20 

**Metal-Oxide Varistors (MOVs)** Surface Mount Varistors > SM7 Series 

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## ~~**SM7 Series Ratings & Specifcations**~~ 

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**----- Start of picture text -----**<br>
Maximum Rating (85°C) Specifications (25°C)<br>Continuous Transient Varistor Voltage  Maximum Clamping  Typical<br>NumberPart  VRMS VDC 10 x 1000µs Energy  Peak Current 8 x 20µs Test Currentat 1mA DC  8 x 20 µsVoltage  Capacitance f = 1MHz<br>VM(AC) VM(DC) WTM ITM VNOM Min  VNOM Max VC IPK C<br>(V) (V) (J) (A)  (V) (V) (V) (A) (pF)<br>V50SM7 50 68 4 1200 73 91 135 10 700<br>V60SM7 60 81 5 1200 90 110 165 10 600<br>V115SM7 115 153 10 1200 162 198 300 10 200<br>V130SM7 130 175 11 1200 184 228 340 10 180<br>V140SM7 140 180 12 1200 198 242 360 10 160<br>V150SM7 150 200 13 1200 212 268 395 10 150<br>V175SM7 175 225 15 1200 247 303 455 10 130<br>V230SM7 230 300 20 1200 324 396 595 10 100<br>V250SM7 250 330 21 1200 354 429 650 10 90<br> V275SM7 275 369 23 1200 389 473 710 10 80<br> V300SM7 300 405 25 1200 420 517 775 10 70<br> V320SM7 320 420 25 1200 462 565 850 10 65<br> V385SM7 385 505 27 1200 558 682 1025 10 60<br> V420SM7 420 560 30 1200 610 748 1120 10 55<br> V460SM7 460 615 37 1200 640 790 1190 10 55<br> V480SM7 480 640 35 1200 670 825 1240 10 50<br> V510SM7 510 675 40 1200 735 910 1200 10 45<br>**----- End of picture text -----**<br>


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Product Dimensions<br>11.4±0.3 8.3±0.3<br>3.6+/-0.3 for<br>V50SM7-V60SM7<br>6.0+/-0.3 for<br>V115SM7 to V510SM7<br>1.5±0.3 3.0±0.3<br>6.5 3.5 All dimensions shown<br>in milimeters<br>13.1<br>Soldering Pad Layout<br>.3 max<br>0<br>**----- End of picture text -----**<br>


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Part Numbering System<br>**----- End of picture text -----**<br>


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V 275 SM7<br>For “VARISTOR”<br>V M(AC)<br>(Three digits -- 115V to 510V)<br>SM7 SERIES<br>**----- End of picture text -----**<br>


© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/09/20 

**Metal-Oxide Varistors (MOVs)** Surface Mount Varistors > SM7 Series 

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## ~~**Lead (Pb) Soldering Recommendations**~~ 

The principal techniques used for the soldering of components in surface mount technology are IR Re-flow and Wave soldering. Typical profiles are shown on the right. 

The terminals of SM7 series devices are tin plated copper, and the recommended solder is 62/36/2 (Sn/Pb/Ag), 60/40 (Sn/Pb) or 63/37 (Sn/Pb). Littelfuse also recommends an RMA solder flux. 

Wave soldering is the most strenuous of the processes. To avoid the possibility of generating stresses due to thermal shock, a preheat stage in the soldering process is recommended, and the peak temperature of the solder process should be rigidly controlled. 

When using a reflow process, care should be taken to ensure that the SM7 chip is not subjected to a thermal gradient steeper than 4 degrees per second; the ideal gradient being 2 degrees per second. During the soldering process, preheating to within 100 degrees of the solder's peak temperature is essential to minimize thermal shock. 

Once the soldering process has been completed, it is still necessary to ensure that any further thermal shocks are avoided. One possible cause of thermal shock is hot printed circuit boards being removed from the solder process and subjected to cleaning solvents at room temperature. The boards must be allowed to cool gradually to less than 50ºC before cleaning. 

## ~~**Lead–free (Pb-free) Soldering Recommendations**~~ 

The terminals of SM7 series devices are tin plated copper, and the recommended Lead-free solder is 96.5/3.0/0.5 (SnAgCu) with an RMA flux, though there is a wide selection of pastes and fluxes available that should be compatible. 

The reflow profile must be constrained by the maximums in the Lead–free Reflow Profile. For Lead–free Wave soldering, the Wave Solder Profile still applies. 

Note: the Lead–free paste, flux and profile were used for evaluation purposes by Littelfuse, based upon industry standards and practices. There are multiple choices of all three available, it is advised that the customer explores the optimum combination for their process as processes vary considerably from site to site. 

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Refow Solder Profle<br>**----- End of picture text -----**<br>


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250<br>MAXIMUM TEMPERATURE<br>230°C<br>200<br>40-80<br>SECONDS<br>ABOVE 183°C<br>150<br>RAMP RATE<br><2°C/s<br>100<br>PREHEAT DWELL<br>50 PREHEAT ZONE<br>0<br>0        0.5       1.0        1.5        2.0       2.5       3.0       3.5       4.0<br>TIME (MINUTES)<br>Wave Solder Profle<br>300<br>MAXIMUM WAVE 260°C<br>250<br>200<br>150<br>SECOND PREHEA T<br>100<br>FIRST PREHEA T<br>50<br>0<br>0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5<br>TIME (MINUTES)<br>Lead–free Re-fow Solder Profle<br>300<br>MAXIMUM TEMPERATURE 250˚C,<br>TIME WITHIN 5˚C OF PEAK<br>250 20 SECONDS MAXIMUM<br>RAMP RATE<br>200 <3˚C/s 60 - 150 SEC<br> > 217˚C<br>150<br>100<br>PREHEAT ZONE<br>50<br>0<br>0          1.0          2.0         3.0        4.0         5.0         6.0         7.0<br>TIME (MINUTES)<br>TEMPERATURE °C<br>TEMPERATURE °C<br>TEMPERATURE °C<br>**----- End of picture text -----**<br>


© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/09/20 

**Metal-Oxide Varistors (MOVs)** Surface Mount Varistors > SM7 Series 

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## ~~**Peak Current, Energy and Power Derating Curve**~~ 

For applications exceeding 85ºC ambient temperature, the peak surge current and energy ratings must be reduced as shown below 

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100<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>-55 50 60 70 80 90 100 110 120 130 140 150<br>AMBIENT TEMPERATURE ( [o] C)<br>PERCENT OF RATED VALUE<br>**----- End of picture text -----**<br>


## ~~**V-I Limit Curves**~~ 

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2000<br>V510SM7<br>V480SM7<br>V460SM7<br>V420SM7<br>1500 V385SM7<br>V320SM7<br>V300SM7<br>V250SM7<br>1000 V230SM7<br>V210SM7<br>V190SM7<br>V175SM7<br>500 V150SM7<br>V140SM7<br>V130SM7<br>V115SM7<br>0<br>0.001 0.01 0.1 1 10 100 1000<br>Current(A)<br>Voltage(V)<br>**----- End of picture text -----**<br>


**NOTE:** If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than ±10% could result.  This type of shift, which normally results in a decrease of VN(DC), may result in the device not meeting the original published specifications, but it does not prevent the device from continuing to function, and to provide ample protection. 

## ~~**Physical Specifcations**~~ 

|**Lead Material**<br>**Soldering Characteristics**|Folded  Tin Plated Metal Leads<br>J-STD-002|
|---|---|
|**Coating**|Molded Plastic Meets UL94 V-0 Requirement|



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Peak Pulse Current Test Waveform for Clamping<br>Voltage<br>100<br>50<br>0<br>t<br>O1 t1 TIM E<br>t2<br>PERCENT OF PEAK VALUE  Test<br>**----- End of picture text -----**<br>


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01 = Virtual Origin of Wave<br>**----- End of picture text -----**<br>


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T  = Time from 10% to 90% of Peak<br>**----- End of picture text -----**<br>


T1 = Rise Time = 1.25 x T 

- T2 = Decay Time 

**Example** - For an 8/20 _µ_ s Current Waveform: 8 _µ_ s = T1 = Rise Time 20 _µ_ s = T2 = Decay Time 

## ~~**Pulse Rating Curves**~~ 

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10000<br>1000 1<br>2<br>10 10 [4]<br>10 [5]<br>10 [2]<br>100 10 [3] 10 [6]<br>10<br>1<br>10 100 1000 10000<br>Impulse Duration (µs)<br>Surge Current (A)<br>**----- End of picture text -----**<br>


## ~~**Environmental Specifcations**~~ 

|**Operating Ambient**<br>**Temperature Range (TA) **|-40°C to +85°C|
|---|---|
|**Storage Temperature**<br>**Range(TSTG)**|-40°C to 125°C|
|**Solvent Resistance**|MIL STD 202, Method 215|
|**Moisture Sensitivity**|Level 1, J-STD-020|



© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/09/20 

**Metal-Oxide Varistors (MOVs)** Surface Mount Varistors > SM7 Series 

## ~~**Tape & Reel Specifcations for V50SM7 amd V60SM7**~~ 

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Carrier Tape<br>P0 Part mm<br>P2 P1<br>W 16.00±0.30<br>T 0.40±0.05<br>A RO OO A -O G1 -} B -O -O ] 5 A0 11.80±0.10<br>B0 8.60±0.10<br>K0 4.80±0.10<br>E 1.75±0.10<br>F 7.50±0.10<br>en| B P0 4.00±0.10<br>A0 a T P1 16.00±0.10<br>11.30 B-B P2 2.00±0.10<br>D0 ø1.50 +0.10/-0<br>D1 ø1.50 +0.10/-0<br>NOTES:<br>1)  All dimensions per EIA-481-c<br>(py Bie 2)  10 pitches cumulative tolerance on tape ±0.20mm<br>A-A WW 3)  Quantity per 13 inch (330 mm) reel: 600 pcs<br>SCALE 1:1<br>Plastic Reel<br>DETAIL H<br>2±0.5<br>16.5<br>120°<br>DETAIL H JJ 21.5±0.4<br>R1<br>15°<br>Ø21±0.8<br>Ø13±0.2<br>D0<br>D1<br>5°<br>E<br>F<br>W<br>B0<br>3.60<br>2<br>K0<br>3.8 - 4.0mm<br>Ø100 Ø330<br>**----- End of picture text -----**<br>


## ~~**Tape & Reel Specifcations for V115SM7 to V510SM7**~~ 

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Carrier Tape<br>P0 Part mm<br>P2 P1<br>a W 16.00±0.30<br>T 0.40±0.05<br>A RO OO A EOS 6 B S417 A0 11.80±0.10<br>B0 8.60±0.10<br>K0 6.80±0.10<br>4 |  It B a E 1.75±0.10<br>A0 “ T fe F 7.50±0.10<br>11.30 B-B P0 4.00±0.10<br>P1 16.00±0.10<br>ral\| I Vf P2 2.00±0.10<br>D0 ø1.50 +0.10/-0<br>D1 ø1.50 +0.10/-0<br>A-A<br>NOTES:<br>1)  All dimensions per EIA-481-c<br>2)  10 pitches cumulative tolerance on tape ±0.20mm<br>Plastic Reel 3)  Quantity per 13 inch (330 mm) reel: 600 pcs<br>DETAIL H<br>2±0.5<br>.Z<br>16.5 i<br>NC eee, 120°<br>! DETAIL H [J 21.5±0.4<br>R1<br>10° 5°<br>Ø21±0.8<br>Ø13±0.2<br>D0<br>D1<br>5°<br>E<br>F<br>W<br>B0<br>3.60<br>2<br>6.2 K0<br>Ø100 Ø330<br>**----- End of picture text -----**<br>


**Disclaimer Notice -** Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications.  Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics. 

© 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/09/20 



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- [Supplier page](https://es.farnell.com/littelfuse/v275sm7/varistor-mov-710v-smd/dp/2383262)
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