# METAL OXIDE VARISTOR, 200V 395V SMD

![Product image](https://novapart.co/image/farnell:1685203/)

**URL**: https://novapart.co/products/V240CH8./metal-oxide-varistor-200v-395v-smd
**SKU**: V240CH8.
**Manufacturer**: LITTELFUSE
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Varistors
**Price**: €0.7380
**Stock**: 100+
**Lead Time**: 2 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Product Range | CH Series |
| Varistor Type | Metal Oxide Varistor (MOV) |
| Varistor Case Style | 3220 [8552 Metric] |
| Clamping Voltage Vc Max | 395V |
| Peak Energy (10/1000Us) | 5J |
| Operating Temperature Max | 85°C |
| Operating Temperature Min | -40°C |
| Peak Surge Current @ 8/20Μs | 250A |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1685203/)

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

**RoHS** ~~[| SAN~~ 

## CH Varistor Series 

## ~~**Description** Po~~ 

CH Series transient surge suppressors are small, metal-oxide varistors (MOVs) manufactured in leadless chip form. They are intended for use in a variety of applications from low voltage DC to off-line board-level protection. These devices, which have significantly lower profiles than traditional radial lead varistors, permit designers to reduce the size and weight and increase the reliability of their equipment designs. 

CH Series varistors are available in a voltage range from 14V to 275V (VM(AC)RMS), and energy ratings up to 8J. 

~~**Agency Approvals**~~ Recognized under the components program of ~~Lo~~ Underwriters Laboratories. **Agency Agency Approval Agency File Number** UL1449 E320116 ~~oo~~ 

See the Littelfuse Multilayer Suppressor Series also. ~~**Features** Po~~ 

   - Supplied in tape and reel or bulk pack 

- Lead–free 

- Leadless, surface mount chip in 5 • No derating up to x 8mm Size 125ºC ambient 

- Voltage ratings V 14V to 275V M(AC)RMS 

- High surge rated up to 400A for low 

voltage devices 

~~**Absolute Maximum Ratings** [|~~ •  For ratings of individual members of a series, see Device Ratings and Specifications chart ~~ee~~ **Continuous CH Series Units** ~~_~~ Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) 14 to 275 V ~~=D~~ DC Voltage Range (VM(DC)) 18 to 369 V Transient: Peak Pulse Current (ITM) ~~Se~~ For 8/20 _µ_ s Current (See Figure 2) 100 to 400 A ~~es~~ Single Pulse Energy Range ~~ET~~ For 10/1000 _µ_ s Current Wave (WTM) 1.0 to 8.0 J Operating Ambient Temperature Range (TA) -55 to +125 ºC Storage Temperature Range (TSTG) -55 to +150 ºC ~~—~~ Temperature Coefficient ( α V) of Clamping Voltage (VC) at Specified Test Current ~~——~~ <0.01 %/ºC _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._ 

## **Additional Information** 

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Datasheet Resources Samples<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/04/15 

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

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## ~~**Device Ratings and Specifcations**~~ 

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Maximum Ratings (125ºC) Specifications (25ºC)<br>Continuous Transient Varistor Voltage at 1 mA DC  Max Clamping Volt VC at<br>Test Current Test Current (8/20 µ s) Typical<br>NumberPart  VRMS VDC (10/1000Energy  µ  s) Peak Current (8/20 µ s) Capacitance<br>VM(AC) VM(DC) WTM ITM MIN VN(DC) MAX VC IP f=1MHz<br>(V) (V) (J) (A) (V) (V) (V) (V) (A) (pF)<br>V22CH8 14 18 (Note 3) 1.0 (Note2) 100 18.7 22.0 26.0 47 5 1600<br>V27CH8 17 22 1.0 100 23.0 27.0 31.1 57 5 1300<br>V33CH8 20 26 1.0 100* 29.5 33.0 36.5 68 5 750<br>V39CH8 25 31 1.0 100* 35.0 39.0 43.0 79 5 700<br>V47CH8 30 38 1.2 100* 42.0 47.0 52.0 92 5 650<br>V56CH8 35 45 1.4 100* 50.0 56.0 62.0 107 5 600<br>V68CH8 40 56 1.5 100* 61.0 68.0 75.0 127 10 500<br>V120CH8 75 102 2.0 250 108.0 120.0 132.0 200 10 300<br>V150CH8 95 127 3.0 250 135.0 150.0 165.0 250 10 250<br>V180CH8 115 153 4.0 250 162.0 180.0 198.0 295 10 120<br>V200CH8 130 175 4.0 250 184.0 200.0 228.0 340 10 110<br>V220CH8 140 180 5.0 250 198.0 220.0 242.0 360 10 105<br>V240CH8 150 200 5.0 250 212.0 240.0 268.0 395 10 100<br>V360CH8 230 300 6.0 250 324.0 360.0 396.0 595 10 70<br>V390CH8 250 330 7.0 250 354.0 390.0 429.0 650 10 60<br>V430CH8 275 369 8.0 250 389.0 430.0 473.0 710 10 50<br>**----- End of picture text -----**<br>


NOTES: 

1. Power dissipation of transients not to exceed 0.25W. 

2. Energy rating for impulse duration of 30ms minimum to one half of peak current value. 

3. Also rated to withstand 24V for 5 minutes. 

4. The Typical Capacitance is for reference only 

5. *High Surge Option (up to 400A) available for relevant voltage ratings. 

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

Continuous power dissipation capability is not an applicable design requirement for a suppressor, unless transients occur in rapid succession. Under this condition, the average power dissipation required is simply the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown on the Device Ratings and Specifications Table for the specific device. Furthermore, the operating values need to be derated at high tempera tures as shown in this diagram. Because varistors can only dissipate a relatively small amount of average power they are, therefore, not suitable for repetitive applications that involve substantial amounts of average power dissipation. 

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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>Figure 1 AMBIENT TEMPERATURE ( [o] C)<br>PERCENT OF RATED VALUE<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/04/15 

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

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Peak Pulse Current Test Waveform<br>01 = Virtual Origin of Wave<br>T  = Time from 10% to 90% of Peak<br>100<br>T1 = Rise Time = 1.25 x T<br>90 T2 = Decay Time<br>Example:<br>50 For an 8/20  µ s Current Waveform:<br>8 µ s = T1 = Rise Time<br>20 µ s = T2 = Decay Time<br>10<br>O1 T TIME<br>T1<br>Figure 2 T2<br>Clamping Voltage for V22CH8 – V68CH8 Clamping Voltage for V120CH8 – V430CH8<br>500 4,000<br>400 MAXIMUM CLAMPING VOLTAGE MAXIMUM CLAMPING VOLTAGE<br>300200 MODEL SIZE 5 x 8mm22 TO 56VTA = -55 [o] C TO 125N(DC) RATING [o] C 3,0002,000 MODEL SIZE 5 x 8mm100 TO 430VTA = -55 [o] C TO 125N(DC) RATING [o] C V430CH8<br>V390CH8<br>V360CH8<br>1009080 V68CH8 1,000900800 V200CH8V220CH8V240CH8<br>70 V56CH8 700<br>60 V47CH8 600<br>50 V39CH8 500<br>40 V33CH8 400<br>V27CH8<br>30 V22CH8 300<br>20 200 V180CH8<br>V150CH8<br>V120CH8<br>10 100<br>10 [-3] 10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [-3] 10 [-2] 10 [-1] 10 [0] 10 [1] 10 [2] 10 [3] 10 [4]<br>Figure 3 PEAK AMPERES (A) Figure 4 PEAK AMPERES (A)<br>Pulse Rating Curves<br>Surge Current Rating Curves for V22CH8 - V56CH8 Surge Current Rating Curves for V120CH8 - V430CH8<br>500 2,000<br>1 MODEL SIZE 5 x 8mm MODEL SIZE 5 x 8mm<br>200 2 V22CH8 - V56CH8 1,000 V120CH8 - V430CH8<br>100 10 500 1<br>10 [4] 2 10 [2]<br>5020 1010 [2][3] 1010 [5] [6] 200100 10 1010 [3] 10 [4] [5]<br>50<br>10<br>5 20<br>10 [6]<br>10<br>2 INDEFINITE<br>5<br>1 INDEFINITE<br>0.5 2<br>0.2 1<br>20 100 1,000 10,000 20 100 1,000 10,000<br>Figure 5 IMPULSE DURATION (µs) Figure 6 IMPULSE DURATION (µs)<br>PERCENT OF PEAK VALUE<br>MAXIMUM PEAK VOLTS (V) MAXIMUM PEAK VOLTS (V)<br>SURGE CURRENT (A) SURGE CURRENT (A)<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._ 

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/04/15 

**Metal-Oxide Varistors** (MOVs) Surface Mount Varistors  >  CH 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. 

CH series devices have silver-platinum terminals (Ag/Pt), 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 CH 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**~~ 

CH series devices have silver-platinum terminals (Ag/Pt), 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>Figure 7 TIME (MINUTES)<br>TEMPERATURE °C<br>**----- End of picture text -----**<br>


## ~~**Wave Solder Profle**~~ 

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300<br>MAXIMUM WAVE 260°C<br>250<br>200<br>150<br>SECOND PREHEAT<br>100<br>FIRST PREHEAT<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>Figure 8<br>Lead–free Re-fow Solder Profle<br>300<br>MAXIMUM TEMPERATURE 260˚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>Figure 9 TIME (MINUTES)<br>TEMPERATURE °C<br>TEMPERATURE °C<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/04/15 

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

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## ~~**Part Numbering System**~~ 

## **V 220CH 8 X** 

**LITTELFUSE VARISTOR PACKAGING OPTIONS** No Letter: Standard 13 Inch Reel **NOMINAL VARISTOR** T: 7 Inch Reel **VOLTAGE** S: Bulk Pack **SERIES DESIGNATOR RELATIVE SIZE INDICATOR** 

## ~~**Dimensions**~~ 

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PAD LAYOUT DIMENSIONS<br>C<br>NOTE 1 B<br>A<br>**----- End of picture text -----**<br>


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Inches Millimeters<br>Symbol<br>Min Max Min Max<br>A 0.402 10.210<br>B 0.216 5.500<br>C 0.087 2.210<br>D - 0.080 - 2.00<br>E 0.016 0.050 0.41 1.27<br>L 0.311 0.335 7.90 8.51<br>W 0.185 0.207 4.70 5.26<br>**----- End of picture text -----**<br>


NOTE: Avoid metal runs in this area. Soldering recommendations: Material - 62/36/2 Sn/Pb/ Ag or equivalent.Temperature – 230ºC Max., 5s. Max. Flux - R.M.A. 

## CHIP LAYOUT DIMENSIONS 

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E<br>D L<br>W<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/04/15 

Surface Mount Varistors  >  CH Series 

## **Metal-Oxide Varistors** (MOVs) 

## ~~**Tape and Reel Specifcations**~~ 

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E P0 P P2 D > K0<br><<br>F t GFFttD 4st Fy esky<br>W  | to we PR ph B0 SECTION<br>PIR PCE THRU<br>itVestedHiSontecyihGene‘ CAVITY<br>| A0 <<br>° D1 T1 ><br>PLAN VIEW OF STRIP T = K<br>ot le<br>T<br>CROSS SECTION<br>71 (REF. PLANE FOR A0 & B0)<br>R4<br>MINIMUM<br>BENDING<br>R1 H0 B0 R3 RADIUS<br>R2 A0<br>K0 REELED RADIUS DETAILS<br>CAVITY DETAILS<br>**----- End of picture text -----**<br>


|Symbol|Parameter|Size (mm)|
|---|---|---|
|**B0**|Cavity Length<br>~~PO~~|8.8 -/+ 0.1|
|**A0**|Cavity Width<br>~~PO~~|5.5 -/+ 0.1|
|**K0**<br>**H0**<br>**R1, R2, R3**|Cavity Depth<br>Ref. Plane for A0 and B0<br>Tape Cavity Radii<br>~~po~~|2.0 Min.<br>+ 0.10<br>0.3<br>- 0.05<br>0.5 Max.|
|**T**<br>Carrier Tape Thickness<br>**T1**<br>Cover Tape Thickness<br>**E**<br>Sprocket Hole from Edge<br>**P0**<br>Sprocket Hole Pitch<br>**D**<br>Sprocket Hole Diameter<br>**P2**<br>Hole Centre to Component Centre<br>~~Po~~<br>~~po~~<br>~~po~~||1.0 Max.<br>0.1 Max.<br>1.75 -/+ 0.1<br>4.0 -/+ 0.1<br>+ 0.1<br>1.5<br>- 0.0<br>2.0 -/+ 0.15|
|**R4**<br>**D1**|Min. Bending Radius<br>Ejection Hole Diameter|30.5 Min.<br>1.5 Min.|
|**K**|Overall Thickness|3.0 Min.|
|**P**|Pitch Of Component|8.0 -/+ 0.1|
|**F**|Sprocket Hole to Ejection Hole|7.5 -/+ 0.1|
|**W**|Carrier Tape Width|16.0 -/+ 0.3|



Notes : 

- Conforms to EIA-481-1, Revision A 

- Can be supplied to IEC P ublication 286-3 

## ~~**Standard Packaging***~~ 

## ~~**Special Packaging**~~ 

CH Series varistors are always shipped in tape and reel. The standard 13-inch reel utilized contains 4000 pieces. 

Note also that the CH Series receives no branding on the chip itself. 

- *NOTE: It is recommended that parts be kept in the sealed bag provided and that parts be used as soon as possible when removed from bags. 

- **Option 1** 7-inch reels containing 1000 pieces are available. To order 7-inch reels add a 'T' suffix to the part number; e.g., V47CH8T. 

- **Option 2** For small quantities (less than 100 pieces) the units are shipped bulk pack. To order, add a 'S' suffix to the part number; e.g., V47CH8S. 

## ~~**Ordering Notes:**~~ 

## **X3313:** HIGH SURGE RATING OPTION -- 

Low voltage (V22~V68) standard parts high surge rating to 100A, to order high surge rated up to 400A with suffix X3313. Example: 

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Standard Model Order As<br>V33CH8 V33CH8X3313<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/04/15 



## Links

- [View this product on Novapart](https://novapart.co/products/V240CH8./metal-oxide-varistor-200v-395v-smd)
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- [Supplier page](https://es.farnell.com/en-ES/littelfuse/v240ch8/metal-oxide-varistor-200v-395v/dp/1685203)
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