Radial Leaded CapGuard™
Varistor/Capacitor Combination for EMI/Surge Suppression
GENERAL DESCRIPTION
AVX’s radial leaded CapGuard™ products are designed to provide both transient
voltage protection and EMI/RFI suppression for electronic circuits. CapGuards™ are
ideally suited to filter out EMI/RFI noise generated by switch mode power supplies or
motors on DC lines or I/O lines in electronic circuits. With multilayer varistor (MLV)
utilized in CapGuard product, effective transient voltage protection is achieved to
protect sensitive electronics from high voltage transients. The capacitor, on the other
hand, absorbs high frequency noise on the line. The MLCC capacitors are designed
with temperature stable X7R dielectric, allowing for wide temperature use with good
capacitance stability.
FEATURES
• High Capacitance / EMI Filtering
• Bi-Directional Protection
• AEC Q200 qualified
• Multiple Strike Capability
• Radial, epoxy encapsulated
APPLICATIONS
GENERAL
• EMI filtering with surge protection
• DC motors
CHARACTERISTICS
• Operating Temperature: -55 to +125ºC
• Working Voltage: 26Vdc, 45Vdc
• Capacitance: 0.47ꢀF, 1ꢀF
• Inductive switching
• Relays
• Power supplies
• I/O Ports
• and more
HOW TO ORDER
CG
21
AS
26
F
474
M
R
TR1
Series Size Automotive Working
Energy Capacitance Tolerance
Leads
R = RoHS
Compliant
Packaging
Blank = Bulk
TR1 = T&R Standard 1
TR2 = T&R Standard 2
Series
Voltage
26 = 26Vdc
45 = 45Vdc
K = 0.6J
F = 0.7J
474 = 0.47ꢀF
105 = 1.0ꢀF
M = 20%
21
ELECTRICAL CHARACTERISTICS
AVX Part Number
CG21AS26F474MR
CG21AS26F105MR
CG21AS45K474MR
CG21AS45K105MR
VW DC
26.0
26.0
45.0
45.0
VW AC
18.0
18.0
35.0
35.0
VB
VC
54
54
90
90
IVC
1
1
1
1
IL
ET
ELD
1.5
1.5
1.25
1.25
IP
Cap
0.47
1
0.47
1
Tol
VJUMP
27.5
27.5
48
33.0 10ꢀ
33.0 10ꢀ
56.0 10ꢀ
56.0 10ꢀ
15
15
15
15
0.7
0.7
0.6
0.6
200
200
200
200
20ꢀ
20ꢀ
20ꢀ
20ꢀ
48
VW(DC)
VW(AC)
VB
VC
IVC
DC Working Voltage [V]
AC Working Voltage [V]
Typical Breakdown Votage [V @ 1mADC
Clamping Voltage [V @ IIV]
Test Current for VC
Et
ELD
IP
Cap
Tol
VJump
Transient Energy Rating [J, 10x1000μS]
Load Dump Energy (x10) [J]
Peak Current Rating [A, 8x20μS]
Typical capacitance [pF] @ frequency specified and 0.5VRMS
Capacitance tolerance [%] from Typ value
Jump Start (V)
]
IL
Maximum leakage current at the working voltage [μA]
012317
80