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Surface Mount Varistors
Transient Voltage Surge Suppressor
RoHS
Pb
CH Varistor Series
(R)
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 23J. See the Littelfuse Multilayer Suppressor Series also.
Features
* Lead-Free * 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
AGENCY APPROVALS: Recognized under the components program of
Underwriters Laboratories.
AGENCY FILE NUMBERS: UL E75961, E135010.
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SURFACE MOUNT VARISTORS
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Surface Mount Varistors
Transient Voltage Surge Suppressor
RoHS
Pb
CH Varistor Series
For ratings of individual members of a series, see Device Ratings and Specifications chart
Absolute Maximum Ratings
Continuous: CH SERIES Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 to 275 DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 to 369 Transient:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Peak Pulse Current (ITM) For 8/20s Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 to 500 Single Pulse Energy Range For 10/1000s Current Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 to 23 Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125 Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 150 Temperature Coefficient (V) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01
UNITS
V V V A J C O C %/OC
O
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.
Device Ratings and Specifications
MAXIMUM RATINGS (125 oC) CONTINUOUS TRANSIENT ENERGY (10/1000s) WTM (J) 10.0 (Note 2) 1.0 1.2 1.5 1.8 2.3 3.0 6.0 8.0 10.0 11.0 12.0 13.0 20.0 21.0 23.0 PEAK CURRENT (8/20s) ITM (A) 250 250 250 250 250 250 250 500 500 500 500 500 500 500 500 500 VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MIN (V) 18.7 23.0 29.5 35.0 42.0 50.0 61.0 108.0 135.0 162.0 184.0 198.0 212.0 324.0 354.0 389.0 VN(DC) (V) 22.0 27.0 33.0 39.0 47.0 56.0 68.0 120.0 150.0 180.0 200.0 220.0 240.0 360.0 390.0 430.0 MAX (V) 26.0 31.1 36.5 43.0 52.0 62.0 75.0 132.0 165.0 198.0 228.0 242.0 268.0 396.0 429.0 473.0 MAX CLAMPING VOLT V C AT TEST CURRENT (8/20s) VC (V) 47 57 68 79 92 107 127 200 250 295 340 360 395 595 650 710 IP (A) 5 5 5 5 5 5 10 10 10 10 10 10 10 10 10 10 TYPICAL CAPACITANCE f = 1MHz (pF) 1600 1300 1100 900 800 700 600 300 250 200 180 160 150 100 90 80 SPECIFICATIONS (25 oC)
VRMS PART NUMBER V22CH8 V27CH8 V33CH8 V39CH8 V47CH8 V56CH8 V68CH8 V120CH8 VM(AC) (V) 14 17 20 25 30 35 40 75 95 115 130 140 150 230 250 275
VDC VM(DC) (V) 18 (Note 3) 22 26 31 38 45 56 102 127 153 175 180 200 300 330 369
V150CH8
V180CH8 V200CH8 V220CH8 V240CH8 V360CH8 V390CH8 V430CH8
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.
V150 - V430 CH Varistors are recognized under UL file #E75961 as a recognized component.
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Surface Mount Varistors
Transient Voltage Surge Suppressor
RoHS
Pb
CH Varistor Series
100 PERCENT OF RATED VALUE 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 130 140 150
Power Dissipation Ratings
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 temperatures as shown in Figure 1. 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.
AMBIENT TEMPERATURE ( oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING CURVE
PERCENT OF PEAK VALUE
100 90
50
10 O1 T T1 T2 TIME
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curves
500 400 300 MAXIMUM PEAK VOLTS (V) 200 4,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 5 x 8mm 22 TO 56VN(DC) RATING TA = -55oC TO 125oC 3,000 MAXIMUM PEAK VOLTS (V) 2,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 5 x 8mm 100 TO 430VN(DC) RATING TA = -55oC TO 125oC V430CH8 V390CH8 V360CH8
100 90 80 70 60 50 40 30 20
V68CH8 V56CH8 V47CH8 V39CH8 V33CH8 V27CH8 V22CH8
1,000 900 800 700 600 500 400 300 200 V180CH8 V150CH8 V120CH8 100 10-3 10-2
V240CH8 V220CH8 V200CH8
10 10-3
10-2
10-1
100
101
102
103
10-1
PEAK AMPERES (A)
100 101 102 PEAK AMPERES (A)
103
104
FIGURE 3. CLAMPING VOLTAGE FOR V22CH8 - V68CH8
FIGURE 4. CLAMPING VOLTAGE FOR V120CH8 - V430CH8
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SURFACE MOUNT VARISTORS
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 8/20s Current Waveform: 8s = T1 = Virtual Front Time 20s = T2 = Virtual Time to Half Value
3
Surface Mount Varistors
Transient Voltage Surge Suppressor
RoHS
Pb
CH Varistor Series
2,000 MODEL SIZE 5 x 8mm V22CH8 - V56CH8 104 105 106 MODEL SIZE 5 x 8mm V120CH8 - V430CH8 1 2 200 100 50 20 10 5 2 1 100 1,000 IMPULSE DURA TION ( s) 10,000 20 100 1,000 IMPULSE DURA TION ( s) 10,000 INDEFINITE 106 10 102 103 104 105
Pulse Rating Curves
500 1 200 100 SURGE CURRENT (A) 50 20 10 5 2 1 0.5 0.2 20 INDEFINITE 2 10 SURGE CURRENT (A) 102 103 1,000 500
FIGURE 5. SURGE CURRENT RATING CURVES FOR V22CH8 - V56CH8
FIGURE 6. SURGE CURRENT RATING CURVES FOR V120CH8 - V430CH8
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.
Mechanical Dimensions
D
Recommended Pad Outline
C
PASSIVATION
L
E W
NOTE 1
B
A CONTACT AREA
INCHES SYMBOL D E L W MIN 0.016 0.311 0.185 MAX 0.080 0.050 0.335 0.207
MILLIMETERS MIN 0.41 7.90 4.70 MAX 2.03 1.27 8.51 5.26
SYMBOL A B C
INCHES 0.402 0.216 0.087
MILLIMETERS 10.21 5.50 2.21
NOTE: Avoid metal runs in this area. Soldering recommendations: Material - 62/36/2 Sn/Pb/Ag or equivalent. Temperature - 230o C Max., 5s. Max. Flux - R.M.A.
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Surface Mount Varistors
Transient Voltage Surge Suppressor
RoHS
Pb
CH Varistor Series
Special Packaging
Option 1 - 7-inch reels containing 1000 pieces are available. To order
7in reels add a T suffix to the part number; e.g., V47CH8T.
Standard Packaging
CH Series varistors are always shipped in tape and reel.The standard 13in reel utilized contains 4000 pieces. Note also that the CH Series receives no branding on the chip itself.
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.
Tape and Reel Specifications
* Conforms to EIA-481, Revision A * Can be Supplied to lEG Publication 286-3
E P0 P P2 D K0
SYMBOL B0
PARAMETER Cavity Length Cavity Width Cavity Depth Ref. Plane for A0 and B0 Tape Cavity Radii Carrier Tape Thickness Cover Tape Thickness Sprocket Hole from Edge Sprocket Hole Pitch Sprocket Hole Diameter
SIZE (mm) 8.5 0.1 5.5 0.1 2.0 Min. +0.10 0.3 -0.05 0.5 Max. 1.0 Max. 0.1 Max. 1.75 0.1 4.0 0.1 +0.1 1.5
W
F B0
SECTION THRU CAVITY T1 T K
A0 K0 H0 R1, R2 , R3 T
A0 D1 PLAN VIEW OF STRIP
T CROSS SECTION (REF. PLANE FOR A0 & B0)
T1
R4 MINIMUM BENDING RADIUS
E P0 D
R1
H0 B0
R3 A0
R2 K0
REELED RADIUS DET AILS
-0.0 P2 R4 D1 K P F W Hole Centre to Component Centre Min. Bending Radius Ejection Hole Diameter Overall Thickness Pitch Of Component Sprocket Hole to Ejection Hole Carrier Tape Width 2.0 0.15 40.0 Min. 1.5 Min. 3.0 Min. 8.0 0.1 7.5 0.1 16.0 0.3
CAVITY DETAILS
3
Ordering Information
V
LITTELFUSE VARISTOR TECHNOLOGY NOMINAL VARISTOR VOLTAGE SERIES DESIGNATOR
220
CH
8
X
PACKAGING OPTIONS No Letter: Standard 13 Inch Reel T: 7 Inch Reel S: Bulk Pack RELATIVE SIZE INDICATOR
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SURFACE MOUNT VARISTORS

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