Leaded Varistors
VK Series Dual Function
Low Voltage Automotive Grade125°C
Overview
KEMET's VK series of dual function protective devices
protect against voltage surges in a low voltage region and
against high frequency noise, replacing two components,
those being a low voltage varistor and a capacitor.
KEMET's VK series incorporate a varistor function in the DC
voltage range from 3 to 125 V (up to 170 V upon request)
and function as high frequency by-pass capacitors operating
in the capacitance range from 10 nF to 1 µF. Lower
capacitance values are also available. They are intended for
protection of all sensitive electronic devices experiencing
both voltage transients and high frequency noise produced
by electromechanical devices, such as buzzers, relays, etc.
KEMET's VK series are square shaped components with in-
line leads and require at least 30% less mounting space.
Applications
Typical applications include electrostatic surge absorption,
relay surge suppression effect and relay reset time, and
piezoelectric buzzer shock noise absorption in micro
controllers, relays, DC and micro motors, exchangers, phone
terminals and antennas as well as automobile electronics
including wiper motors, central locking systems, seat
adjustment motors, seat heating and electric window
systems.
Benefits
• Through-hole form factor
• Operating ambient temperature of −40°C to +125°C
• Operating voltage range of 3 to 125 VDC
• Operating voltage range (Vrms) 2 V to 95 V
• Capacitance range at 1 kHz of 10 nF to 1 μF
• Capacitor temperature characteristics X7R
• Dimensional and weight savings on the board
• One standard model size available, 6 x 9 mm
• RoHS 2 2011/65/EC, REACH compliant
• AEC-Q200 qualified Grade 1
Click image above for interactive 3D content
Open PDF in Adobe Reader for full functionality
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
V0006_VK • 11/3/2016
1
Leaded Varistors
VK Series Dual Function Low Voltage Automotive Grade 125°C
Ordering Information
VK
Series
Varistor Dual
Function
Leaded 125°C
Low Voltage
Automotive Grade
Varistor/Capacitor
(X7R Dielectric)
103
Capacitance
Code (nF)
103 = 10
104 = 100
105 = 1,000
M
Capacitance
Tolerance
Code
M = ±20%
M
151
R
002
Maximum Continuous
Working Voltage
(Vrms AC)
002 = 2
004 = 4
006 = 6
008 = 8
011 = 11
014 = 14
017 = 17
020 = 20
025 = 25
030 = 30
035 = 35
040 = 40
050 = 50
060 = 60
095 = 95
P050
Pitch
Code
P050 = 5 mm
Tolerance of
Maximum Surge Packaging/
Varistor Voltage
Current Code
Lead Style
K = ±10%
L = ±15%
M = ±20%
151 = 150 A
B = Bulk
R = Reel
Dimensions – Millimeters
D
A
t
R
25
Minimum
d
As per part number table.
Environmental Compliance
RoHS 2 2011/65/EC, REACH
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
V0006_VK • 11/3/2016
2
Leaded Varistors
VK Series Dual Function Low Voltage Automotive Grade 125°C
Performance Characteristics
Continuous
Steady State Applied Voltage
DC Voltage Range (V
dc
)
AC Voltage Range (V
rms
)
Transient
Non-Repetitive Surge Current, 8/20 µs Waveform (I
max
)
Non-Repetitive Surge Energy, 10/1000 µs Waveform(W
max
)
Capacitance Range
Capacitor Temperature Characteristics
Operating Ambient Temperature
Storage Temperature Range
Threshold Voltage Temperature Coefficient
Insulation Resistance
Isolation Voltage Capability
Response Time
Climatic Category
°C
°C
%/°C
GΩ
kV
ns
A
J
nF
150
0.1 to 2.5
10 to 1000
X7R
−40 to +125
−40 to +150
< + 0.05
>1
> 1.25
< 25
40/125/56
V
V
3 to 125
2 to 95
Units
Value
Qualifications
Reliability
Parameter
Test
Tested According to
EN 132 400, Test 4.2.1. - the voltage shall be raised from near
zero to the test voltage
Vt at a rate not exceeding 150 V/s, Where for:
Class X1 Capacitors Vt = 2*Vrms + 1,500 V~, 1 minute
Class Y1 Capacitors Vt = 4000 V~, 1 minute
Class Y2 Capacitors Vt = 2*Vrms + 1,500 V~, 1 minute
EN 132 400, Test 4.13. - 24 impulses of the same polarity shall be
applied to the capacitor. The time between impulses shall be no
ledd than 10s, where for:
Class X1 Capacitors Vp = 4 kV
Class Y1 Capacitors Vp = 8 kV
Class Y2 Capacitors Vp = 5 kV
EN 132 400, Test 4.14, 1000 h at UCT, where:
– for X Class Capacitors: at V = 1.25 Vrms and once per hour
the voltage shall be increased to 1000 V~ for 0,1 s
– for Y Class Capacitors: at V = 1.7 Vrms and once per hour
the voltage shall be increased to 1,000 V~ for 0,1 s
Condition to be Satisfied
after Testing
no permanent breakdown of flash-
overs during the test period
Voltage Proof
Vt
Impulse Voltage
no self-healing breakdowns or flash-
overs
AC/DC Bias
Reliability
AC/DC
Life Test
no visible damage
|ΔC/C| < 20 %
tan δ < 0.008
IR greater than 50 % of the applicable
limits no permanent breakdown or
flash-over during voltage proof
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
V0006_VK • 11/3/2016
3
Leaded Varistors
VK Series Dual Function Low Voltage Automotive Grade 125°C
Qualifications cont'd
Reliability
Parameter
Charge and
Discharge
Radio – Frequency
Characteristics
Capacitance –
Temperature
Characteristics
Test
Tested According to
EN 132 400, Test 4.15. – 10.000 cycles of charge and discharge
at the rate of one operation per minute with the test voltage of
SQRT (2)*Vrms discharge rate adjusted to 100 V/µs
EN 132 400, Test 4.16. – measurement of capacitor impedance
over a range of frequencies
Measurement of capacitance and tan 6 in the temperature
chamber at 20 °C and at UCT and LTC
EN 132 400, Test 4.11
a) Dry heat, 16 h, UCT, Test Ba, IEC 68–2–2
b) Damp heat, cyclic, the first cycle: 55°C, 93 % RH, 24 H,
test DB, IEC 68–2–1
c) Cold, LCT, 2 h, Test Aa, IEC 68–2–1
d) Damp heat cyclic, remaining 5 cycles: 55°C, 93 % RH,
24 h/cycle, Test Bd, IEC 68–2–30
EN 132 400, Test 4.6, Test Na, IEC 68–2–14, 5 cycles UCT/LCT,
30 minutes
EN 132 400, Test 4.6, Test Na, IEC 68–2–14, 5 cycles UCT/LCT,
30 minutes
Condition to be Satisfied
after Testing
|ΔC/C| < 10 %
tan δ < 0,008
IR greater than 50 % of the
applicable limits
with specification
with specification
no visible damage
|ΔC/C| < 20 %
tan δ < 0.008
IR greater than 50 % of the applicable
limits no permanent breakdown or
flash-over during voltage proof
no visible damage
no visible damage
|ΔC/C| < 20 %
tan δ < 0.008
IR greater than 50 % of the applicable
limits no permanent breakdown or flash-
over during voltage proof
no visible damage
|ΔC/C| < 20 %
tan δ < 0.008
IR greater than 50 % of the applicable
limits no permanent breakdown or flash-
over during voltage proof
Solderable at shipment and after 2 years
of storage - limits
no visible damage |AC/C| < 10 %
no visible damage
no visible damage
"|ΔC/C| < 10 %
tan δ within specification
no visible damage"
Climatic
Sequence
Thermal
Shock
Environmental and
Storage Reliability
Steady State
Damp Heat
ICE 68–2–2, Test Ba 1,000 h at maximum storage temperature
Storage Test
SolderabiLity
Resistance
to Soldering
Heat
Robustness of
Termination
Vibration
Mechanical
Shock
EN 132 400, Test 4.5., Test Ta, IEC 68–2–20, solder bath and
reflow method
EN 132 400, Test 4.4., Test Tb, IEC 68–2–20, solder bath and
reflow method
EN 132 400, Test 4.3., Test Ua, IEC 68–2–21
EN 131 400, Test 4.7., Test Fc, IEC 68–2–6,
Frequency range 10 to 55 Hz; Amplitude 0.75 mm or 98 m/s2
Total duration 6 h (3 x 2 h); Waveshape – half sine
EN 132 400, Test 4.9, Test Ea, IEC 68–2–27
Acceleration = 490 m/s2; 100 g 6ms and 50 g 11 ms
Waveshape – half sine; Number of shocks = 3 x 6
Mechanical
Reliability
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
V0006_VK • 11/3/2016
4
Leaded Varistors
VK Series Dual Function Low Voltage Automotive Grade 125°C
Application Circuits
(A) Eliminating sparks from relay circuits
(There is no delay in operating time)
(B) Eliminating noise from micro motors
Parallel to Load
Parallel to Contacts
R
R
L
L
GND
(C) Stabilizing voltages and absorbing line surges
(D) Absorbing shock noice of piezzoelectric alarms
R
IN
OUT
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
V0006_VK • 11/3/2016
5
京公网安备 11010802033920号
EEWORLD
