V47CH8X3313 - Littelfuse Inc.

Speciﬁcations are subject to change without notice.

Revised: 09/14/17

Metal-Oxide Varistors (MOVs)

Surface Mount Varistors > CH Series

CH Varistor Series RoHS

Description

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.

See the Littelfuse Multilayer Suppressor Series also.

Features

• RoHS compliant

• Leadless, surface

mount chip in 5

x 8mm Size

• Voltage ratings

VM(AC)RMS 14V to 275V

• Supplied in tape and

reel or bulk pack

• No derating up to

125ºC ambient

• High surge rated

up to 600A

Agency Approvals

Absolute Maximum Ratings

• For ratings of individual members of a series, see Device Ratings and Speciﬁcations chart

Continuous CH Series Units

Steady State Applied Voltage:

AC Voltage Range (VM(AC)RMS) 14 to 275 V

DC Voltage Range (VM(DC)) 18 to 369 V

Transient:

Peak Pulse Current (ITM)

For 8/20µs Current (See Figure 2) 100 to 600 A

Single Pulse Energy Range

For 10/1000µs 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 (αV) 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.

Agency Agency Approval Agency File Number

UL1449 E320116

Recognized under the components program of

Underwriters Laboratories.

Additional Information

Datasheet Samples

Resources

Speciﬁcations are subject to change without notice.

Revised: 09/14/17

Metal-Oxide Varistors (MOVs)

Surface Mount Varistors > CH Series

Part

Number

Maximum Ratings (125ºC) Speciﬁcations (25ºC)

Continuous Transient Varistor Voltage at 1 mA DC

Test Current

Max Clamping Volt VC at

Test Current (8/20µs)

Typical

Capacitance

VRMS VDC

Energy

(10/1000µ s)

Peak Current

(8/20µs)

VM(AC) VM(DC) WTM ITM MIN VN(DC) MAX VCIPf=1MHz

(V) (V) (J) (A) (V) (V) (V) (V) (A) (pF)

V22CH8 14 18 (Note 3) 1.0 (Note2) 100 18.7 22.0 26.0 47 5 1600

V27CH8 17 22 1. 0 100 23.0 27.0 31.1 57 5 1300

V33CH8 20 26 1. 0 100* 29.5 33.0 36.5 68 5 750

V39CH8 25 31 1. 0 100* 35.0 39.0 43.0 79 5 700

V47CH8 30 38 1. 2 100* 42.0 47.0 52.0 92 5 650

V56CH8 35 45 1. 4 100* 50.0 56.0 62.0 107 5 600

V68CH8 40 56 1. 5 100* 61.0 68.0 75.0 127 10 500

V120CH8 75 102 2.0 2506108.0 120.0 132.0 200 10 300

V150CH8 95 127 3.0 2506135.0 150.0 165.0 250 10 250

V180CH8 115 153 4.0 2506162.0 180.0 198.0 295 10 120

V200CH8 130 175 4.0 2506184.0 200.0 228.0 340 10 110

V220CH8 140 180 5.0 2506198.0 220.0 242.0 360 10 105

V240CH8 150 200 5.0 2506212.0 240.0 268.0 395 10 100

V360CH8 230 300 6.0 2507324.0 360.0 396.0 595 10 70

V390CH8 250 330 7. 0 2507354.0 390.0 429.0 650 10 60

V430CH8 275 369 8.0 2507389.0 430.0 473.0 710 10 50

Device Ratings and Speciﬁcations

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.

6. High surge option(up to 600A) available for relevant voltage ratings.

7. High surge option(up to 500A) available for relevant voltage ratings.

8. Ultrasonic welding process is not recommended for CH series.

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.

FIGURE 1. CURRENT, ENERGY AND POWER DERATING

CURVE

100

-55 50 60 70 80 90 100110 120130 140150

AMBIENT TEMPERATURE ( oC)

PERCENT OF RATED VALUE

Figure 1

Speciﬁcations are subject to change without notice.

Revised: 09/14/17

Metal-Oxide Varistors (MOVs)

Surface Mount Varistors > CH Series

FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM

100

O1T

T1T2

TIME

PERCENT OF PEAK V

ALUE

O1 = Virtual Origin of Wave

T = Time From 10% to 90% of Peak

T1 = Virtual Front time = 1.25 • t

T2 = Virtual Time to Half Value (Impulse Duration)

Example: For an 8/20 s Current Waveform:

8s = T1 = Virtual Front Time

20 s = T2 = Virtual Time to Half Value

Peak Pulse Current Test Waveform

Clamping Voltage for V120CH8 – V430CH8

Clamping Voltage for V22CH8 – V68CH8

FIGURE 3. CLAMPING VOLTAGE FOR V22CH8 - V68CH8

500

400

300

200

100

MAXIMUM PEAK VOLTS (V)

PEAK AMPERES (A)

10-3 10 -2 10-1 10 010 110210 3

V56CH8

V47CH8

V39CH8

V33CH8

V27CH8

V22CH8

MAXIMUM CLAMPING VOLTAG E

MODEL SIZE 5 x 8mm

22 TO 56VN(DC) RATING

TA = -55oC TO 125oC

V68CH8

FIGURE 4. CLAMPING VOLTAGE FOR V120CH8 - V430CH8

4,000

3,000

2,000

1,000

900

800

700

600

500

400

300

200

100

10-3 10 -2 10-1 10010 110210 3104

V180CH8

V150CH8

V120CH8

V430CH8

V390CH8

V360CH8

V240CH8

V220CH8

V200CH8

PEAK AMPERES (A)

MAXIMUM PEAK VOLTS (V)

MAXIMUM CLAMPING VOLTAGE

MODEL SIZE 5 x 8mm

100 TO 430V

N(DC)

RATING

= -55

C TO 125

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.

Surge Current Rating Curves for V22CH8 - V56CH8

FIGURE 5. SURGE CURRENT RATING CURVES FOR

V22CH8 - V56CH8

500

200

0.2

0.5

100

20 100 1,000 10,000

IMPULSE DURATION

SURGE CURRENT (A)

102

103

104

105

106

INDEFINITE

MODEL SIZE 5 x 8mm

V22CH8 - V56CH8

(µs)

20 100 1,000 10,000

IMPULSE DURATION (µs)

1,000

500

250

100

0.5

SURGE CURRENT (A)

2.5

106

INDEFINITE

102

103

104

105

MODEL SIZE 5 x 8mm

V120CH8 - V430CH8

Pulse Rating Curves

01 = Virtual Origin of Wave

T = Time from 10% to 90% of Peak

T1 = Rise Time = 1.25 x T

T2 = Decay Time

Example:

For an 8/20 µs Current Waveform:

8µs = T1 = Rise Time

20µs = T2 = Decay Time

Surge Current Rating Curves for

V120CH8 - V430CH8

Figure 2

Figure 3 Figure 4

Figure 5 Figure 6

Speciﬁcations are subject to change without notice.

Revised: 09/14/17

Metal-Oxide Varistors (MOVs)

Surface Mount Varistors > CH Series

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.

FIGURE 14. REFLOW SOLDER PROFILE

FIGURE 15.WAVE SOLDER PROFILE

FIGURE 16. LEAD-FREE RE-FLOW SOLDER PROFILE

TIME (MINUTES)

300

250

200

150

100

0.0 0.5 1.01.5 2.0 2.5 3.0 3.5 4.0 4.5

MAXIMUM WAVE 260°C

SECOND PREHEAT

FIRST PREHEAT

MAXIMUM TEMPERATURE 250˚C,

TIME WITHIN 5˚C OF PEAK

20 SECONDS MAXIMUM

PREHEAT ZONE

RAMP RATE

<3˚C/s 60 - 150 SEC

> 217˚C

PREHEAT ZONE

PREHEAT DWELL

RAMP RATE

<2°C/s

MAXIMUM TEMPERATURE

230°C

TEMPERATURE °C

TIME (MINUTES)

250

200

150

100

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

40-80

SECONDS

ABOVE 183°C

TEMPERATURE °C

TIME (MINUTES)

300

250

200

150

100

00 1.0 2.0 3.0 4.0 5.0 6.0 7. 0

FIGURE 14. REFLOW SOLDER PROFILE

FIGURE 15.WAVE SOLDER PROFILE

FIGURE 16. LEAD-FREE RE-FLOW SOLDER PROFILE

TIME (MINUTES)

300

250

200

150

100

0.0 0.5 1.01.5 2.0 2.5 3.0 3.5 4.0 4.5

MAXIMUM WAVE 260°C

SECOND PREHEAT

FIRST PREHEAT

MAXIMUM TEMPERATURE 250˚C,

TIME WITHIN 5˚C OF PEAK

20 SECONDS MAXIMUM

PREHEAT ZONE

RAMP RATE

<3˚C/s 60 - 150 SEC

> 217˚C

PREHEAT ZONE

PREHEAT DWELL

RAMP RATE

<2°C/s

MAXIMUM TEMPERATURE

230°C

TEMPERATURE °C

TIME (MINUTES)

250

200

150

100

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

40-80

SECONDS

ABOVE 183°C

TEMPERATURE °C

TIME (MINUTES)

300

250

200

150

100

00 1.0 2.0 3.0 4.0 5.0 6.0 7. 0

FIGURE 14. REFLOW SOLDER PROFILE

FIGURE 15.WAVE SOLDER PROFILE

FIGURE 16. LEAD-FREE RE-FLOW SOLDER PROFILE

TIME (MINUTES)

300

250

200

150

100

0.0 0.5 1.01.5 2.0 2.5 3.0 3.5 4.0 4.5

MAXIMUM WAVE 260°C

SECOND PREHEAT

FIRST PREHEAT

MAXIMUM TEMPERATURE 260˚C,

TIME WITHIN 5˚C OF PEAK

20 SECONDS MAXIMUM

PREHEAT ZONE

RAMP RATE

<3˚C/s 60 - 150 SEC

> 217˚C

PREHEAT ZONE

PREHEAT DWELL

RAMP RATE

<2°C/s

MAXIMUM TEMPERATURE

230°C

TEMPERATURE °C

TIME (MINUTES)

250

200

150

100

0 0.5 1. 0 1.5 2.0 2.5 3.0 3.5 4.0

40-80

SECONDS

ABOVE 183°C

TEMPERATURE °C

TIME (MINUTES)

300

250

200

150

100

00 1.0 2.0 3.0 4.0 5.0 6.0 7. 0

Reﬂow Solder Proﬁle

Wave Solder Proﬁle

Lead–free Re-ﬂow Solder Proﬁle

Figure 7

Figure 8

Figure 9

Speciﬁcations are subject to change without notice.

Revised: 09/14/17

Metal-Oxide Varistors (MOVs)

Surface Mount Varistors > CH Series

Dimensions

NOTE 1

Symbol Inches Millimeters

Min Max Min Max

A0.402 10.210

B0.216 5.500

C0.087 2.210

D- 0.080 - 2.00

E0.016 0.050 0.41 1.27

L0.311 0.335 7.90 8.51

W0.185 0.207 4.70 5.26

PAD LAYOUT DIMENSIONS

CHIP LAYOUT DIMENSIONS

Part Numbering System

V 220 CH 8

RELATIVE SIZE INDICATOR

LITTELFUSE VARISTOR

SERIES DESIGNATOR

NOMINAL VARISTOR

VOLTAGE

PACKAGING OPTIONS

No Letter: Standard 13 Inch Reel

T: 7 Inch Reel

S: Bulk Pack

NOTE: Avoid metal runs in this area.

Speciﬁcations are subject to change without notice.

Revised: 09/14/17

Metal-Oxide Varistors (MOVs)

Surface Mount Varistors > CH Series

Notes :

• Conforms to EIA-481-1, Revision A

• Can be supplied to IEC P ublication 286-3

Standard 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.

Special Packaging

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.

Symbol Parameter Size (mm)

B0Cavity Length 8.8 -/+ 0.1

A0Cavity Width 5.5 -/+ 0.1

K0Cavity Depth 2.0 Min.

H0Ref. Plane for A0 and B0 + 0.10

0.3

- 0.05

R1, R2, R3Tape Cavity Radii 0.5 Max.

TCarrier Tape Thickness 1.0 Max.

T1Cover Tape Thickness 0.1 Max.

ESprocket Hole from Edge 1.75 -/+ 0.1

P0Sprocket Hole Pitch 4.0 -/+ 0.1

DSprocket Hole Diameter + 0.1

1. 5

- 0.0

P2Hole Centre to Component Centre 2.0 -/+ 0.15

R4Min. Bending Radius 30.5 Min.

D1Ejection Hole Diameter 1.5 Min.

KOverall Thickness 3.0 Min.

PPitch Of Component 8.0 -/+ 0.1

FSprocket Hole to Ejection Hole 7.5 -/+ 0.1

WCarrier Tape Width 16.0 -/+ 0.3

CROSS SECTION

(REF. PLANE FOR A0 & B0)

SECTION

THRU

CAVITY

MINIMUM

BENDING

RADIUS

CAVITY DETAILS

REELED RADIUS DETAILS

PLAN VIEW OF STRIP

Tape and Reel Speciﬁcations

Ordering Notes:

Standard Model Order As

V33CH8 V33CH8X3313

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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