Copyright © Harris Corporation 1995
4-39
SEMICONDUCTOR
Features
• Recognized as “Transient Voltage Surge Suppressors”, UL File
#E75961 to Std. 1449
• Recognized as “Protectors for Data Communication and Fire Alarm
Circuits”, UL File #E135010 to Std. 497B
• Surface Mount Chip Intended for Hybrid-Circuit Applications
• Voltage Ratings VM(AC)RMS. . . . . . . . . . . . . . . . . . . . . . . . . 10V to 275V
• Available in Tape and Reel for use with Automatic Pick and Place
Equipment
• Compatible with Most Surface-Mounting Assembly Equipment and
Techniques
CH SERIES
Description
CH series transient surge suppressors are small, very com-
pact metal-oxide varistors. They are intended for use in
hybrid circuit applications in commercial and industrial
equipment utilizing direct surface-mounting techniques.
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 equip-
ment designs.
CH series varistors are available in a voltage range from
10V to 275V VM(AC)RMS, and energy ratings up to 23J.
Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Characteristics chart
CH SERIES UNITS
Continuous:
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 to 275
14 to 369
V
V
Transient:
Peak Pulse Current (ITM)
For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single Pulse Energy Range
For 10/1000µs Current Wave (WTM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
250 to 500
0.8 to 23
A
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
CH Series
Surface Mount Metal-Oxide Varistors
March 1995
File Number 2186.3
4-40
Specifications CH Series
Device Ratings and Specifications
V82 - V240 CH Varistors are listed under UL file #E75961 as a recognized component.
Series CH Varistors are listed under UL file #E135010 as a recognized component.
MODEL
NUMBER
MAXIMUM RATINGS (+125oC) SPECIFICATIONS (+25oC)
CONTINUOUS TRANSIENT
VARISTOR VOLTAGE AT 1mA
DC TEST CURRENT
MAX CLAMPING
VOLT VC AT TEST
CURRENT (8/20µs)
TYPICAL
CAPACI-
TANCEVRMS VDC
ENERGY
(10/1000µs)
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) 10.0
(Note 2) 250 18.7 22.0 26.0 47 5 1600
V27CH8 17 22 1.0 250 23.0 27.0 31.1 57 5 1300
V33CH8 20 26 1.2 250 29.5 33.0 36.5 68 5 1100
V39CH8 25 31 1.5 250 35.0 39.0 43.0 79 5 900
V47CH8 30 38 1.8 250 42.0 47.0 52.0 92 5 800
V56CH8 35 45 2.3 250 50.0 56.0 62.0 107 5 700
V120CH8 75 102 6.0 500 108.0 120.0 132.0 200 10 300
V150CH8 95 127 8.0 500 135.0 150.0 165.0 250 10 250
V180CH8 115 153 10.0 500 162.0 180.0 198.0 295 10 200
V200CH8 130 175 11.0 500 184.0 200.0 228.0 340 10 180
V220CH8 140 180 12.0 500 198.0 220.0 242.0 360 10 160
V240CH8 150 200 13.0 500 212.0 240.0 268.0 395 10 150
V360CH8 230 300 20.0 500 324.0 360.0 396.0 595 10 100
V390CH8 250 330 21.0 500 354.0 390.0 429.0 650 10 90
V430CH8 275 369 23.0 500 389.0 430.0 473.0 710 10 80
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.
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 Characteristics table for the specific
device. Furthermore, the operating values need to be der-
ated 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.
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
AMBIENT TEMPERATURE (oC)
PERCENT OF RATED VALUE
4-41
CH Series
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
Transient V-I Characteristics Curves
FIGURE 3. CLAMPING VOLTAGE FOR V18CH8 - V68CH8 FIGURE 4. CLAMPING VOLTAGE FOR V82CH8 - V430CH8
Pulse Rating Curves
FIGURE 5. SURGE CURRENT RATING CURVES FOR
V18CH8 - V68CH8 FIGURE 6. SURGE CURRENT RATING CURVES FOR
V82CH8 - 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.
100
90
50
10
O1T
T1T2
TIME
PERCENT OF PEAK VALUE
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 8/20µs Current Waveform:
8µs = T1 = Virtual Front Time
20µs = T2 = Virtual Time to Half Value
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-3 10-2 10-1 100101102103
V56CH8
V47CH8
V39CH8
V33CH8
V27CH8
V22CH8
V18CH8
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 5 x 8mm
18 TO 56VN(DC) RATING
TA = -55oC TO +125oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
10-3 10-2 10-1 100101102103104
V180CH8
V150CH8
V120CH8
V100CH8
V430CH8
V390CH8
V360CH8
V240CH8
V220CH8
V200CH8
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 5 x 8mm
100 TO 430VN(DC) RATING
TA = -55oC TO +125oC
500
200
50
20
10
5
2
1
0.2
0.5
100
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
10
102
103
104
105
106
INDEFINITE
MODEL SIZE 5 x 8mm
V18CH8 - V68CH8
20 100 1,000 10,000
IMPULSE DURATION (µs)
2,000
1,000
500
200
100
50
20
10
5
2
1
1
2
10
102
103
104
105
INDEFINITE
MODEL SIZE 5 x 8mm
V82CH8 - V430CH8
106
SURGE CURRENT (A)
4-42
CH Series
Series Dimensions
Ordering Information
Standard Packaging:
CH Series varistors are always shipped in tape and reel. The
standard 13-inch reel utilized contains 4000 pieces.
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.
Tape and Reel Specifications
• Conforms to EIA-481, Revision A
• Can be Supplied to lEG Publication 286-3
SYMBOL
INCHES MILLIMETERS
MIN MAX MIN MAX
D - 0.080 - 2.03
E 0.016 0.050 0.41 1.27
L 0.311 0.335 7.90 8.51
W 0.185 0.207 4.70 5.26
E
PASSIVATION
CONTACT AREA
W
L
D
B0
D
P2
P
P0
A0D1
E
F
W
CROSS SECTION
(REF. PLANE FOR A0 & B0)
T
R1
R2
K0
A0
R3
B0
H0
K0
SECTION
THRU
CAVITY
T1
TK
MINIMUM
BENDING
RADIUS
R4
CAVITY DETAILS
REELED RADIUS DETAILS
PLAN VIEW OF STRIP
Recommended Pad Outline
SYMBOL INCHES MILLIMETERS
A 0.402 10.21
B 0.216 5.50
C 0.087 2.21
NOTE: Avoid metal runs in this area. Soldering recommendations:
Material - 62/36/2 Sn/Pb/Ag or equivalent. Temperature - 230oC
max., 5 sec. max. Flux - R.M.A.
SYMBOL PARAMETER SIZE (mm)
B0Cavity Length 8.5 ±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.
T Carrier Tape Thickness 1.0 Max.
T1Cover Tape Thickness 0.1 Max.
E Sprocket Hole from Edge 1.75 ±0.1
P0Sprocket Hole Pitch 4.0 ±0.1
D Sprocket Hole Diameter +0.1
1.5 -0.0
P2Hole Centre to Component Centre 2.0 ±0.15
R4Min. Bending Radius 40.0 Min.
D1Ejection Hole Dia. 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
NOTE 1
C
A
B
