Page 1
Transient Voltage Suppression Diodes
Axial Leaded – 6kA > AK6 series
AK6 Series
Agency Approvals
AGENCY AGENCY FILE NUMBER
E128662
Maximum Ratings and Thermal Characteristics
=25°C unless otherwise noted)
(T
A
Parameter Symbol Value Unit
Operating Junction and
Storage Temperature Range
Current Rating
Note:
1. Rated I
PP
1
measured with 8/20μS pulse.
Functional Diagram
T
J , TSTG
I
PP
(-)55 to 150 °C
6 kA
RoHS
Description
The AK6 series of high current transient suppressors have
been specially designed for use in A.C. line protection and
any demanding applications (AC or DC).They offer superior
clamping characteristics over standard S.A.D. technologies
by virtue of the Littelfuse Foldbak technology. Therefore,
any voltage rise due to increased current conduction is
contained to a minimum, providing the best possible
protection level. They can also be connected in series and/
or parallel to create very high capacity protection solutions.
Features
• Verylowclampingvoltage
• Ultracompact:less
than one-tenth the size
of traditional discrete
solutions
• Sharpbreakdownvoltage
• Lowsloperesistance
• Bi-directional
• Foldbaktechnologyfor
superior clamping factor
• Symmetricinleadswidth
for easier soldering during
• IEC-61000-4-2ESD
15kV(Air), 8kV (Contact)
• ESDprotectionofdata
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• EFTprotectionofdata
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Halogen-free
• RoHScompliant
• Glasspassivatedjunction
assembly
Additional Information
Datasheet
Bi-directional
Electrical Characteristics.(T
Part
Numbers
AK6 - 030C 6-015C 30 10 15 32 37 10 90 6,000 0.1 11. 0 X
AK6 - 058C 6-030C 58 10 15 64 70 10 110 6,000 0.1 8.0 X
AK6 - 066C 6-058C 66 10 15 72 80 10 120 6,000 0.1 6.0 X
AK6 - 076C 6-066C 76 10 15 85 95 10 140 6,000 0.1 6.5 X
AK6 - 170C 6-076C 17 0 10 15 180 220 10 260 6,000 0.1 2.8 X
AK6 - 190C 6-150C 19 0 10 15 200 245 10 290 6,000 0.1 2.5 X
AK6 - 240C 6-170C 240 10 15 250 285 10 340 6,000 0.1 2.0 X
AK6 - 380C 6-380C 380 10 15 401 443 10 520 6,000 0.1 1. 4 X
AK6 - 430C 6-430C 430 10 15 440 490 10 625 6,000 0.1 1. 0 X
Note: Using 8/20µS wave shape as defined in IEC 61000-4-5.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/14
Marking
Part
Standoff
Voltage
(VSO)
Volts
=25°C unless otherwise noted)
A
Max.
Reverse
Leakage
(I
) @VSO
R
µA
Typical
IR @
85°C
(µA)
Voltage (VBR) @ I
Min Volts Max Volts (mA) VCL Volts IPP Amps (%/°C) (nF)
Reverse
Breakdown
Current
T
Test
Max. Clamping Voltage
VCL @ Ipp Peak Pulse
I
Current (IPP) (Note 1)
T
Resources
Max. Temp
Coefficient
OF V
Samples
Max.
Capaci-
tance
0 Bias
BR
10kHz
Agency
Approval
Page 2
Transient Voltage Suppression Diodes
0
50
100
150
200
250
300
0 0.5 1 1.5 2 2.5 3 3.5 4
TIME(MINUTES)
TEMPERATURE
(
º
C)
Maximum W ave 240C
0
50
100
150
200
250
300
0 0.5 1 1 .5 2 2.5 3 3.5 4
TIME(MINUTES)
TEMPERATURE
(ºC)
Maximum W ave 260C
0
20
40
60
80
100
0255075 100 125
Percent of Rated Value
T - AMBI ENT TEMPERATURE (°C)
A
Current (kA)
Voltage (V)
Axial Leaded – 6kA > AK6 series
Physical Specifications
Weight Contact manufacturer
Case Epoxy encapsulated
Terminal
Silver plated leads, solderable per
MIL-STD-750, Method 2026
Wave Solder Profile
Figure 1 - Non Lead-free Profile
Flow/Wave Soldering (Solder Dipping)
Peak Temperature : 265°C
Dipping Time : 10 seconds
Soldering : 1 time
Figure 2 - Lead-free Profile
Ratings and Characteristic Curves (T
Figure 3- Peak Power Derating Figure 4 - Surge Response
=25°C unless otherwise noted)
A
continues on next page.
Specifications are subject to change without notice.
© 2014 Littelfuse, Inc.
Revised: 03/04/14
Page 3
Transient Voltage Suppression Diodes
1
10
100
10000
0.00001 0.0001 0.001
P
PPM
-Peak Pulse Power (kW)
td-Pulse Width (sec.)
1000
AK6-430C
AK6-076C
8/20µs
10/350µs
10/1000µs
-8
-6
-4
-2
0
2
4
6
8
10
12
-50 -25025 50 75 100 125
Percent of V
BR
Change
Junction Temperature(Tj )
L2
L1
A
G
D
E
F
C
B
C
Voltage
Current
Time (µs)
50
100
0
t
r
t
d
0
Peak
Value
Half Value
t – Time (µs)
I
PP
– Peak Pulse Current – %I
PP
tr = rise time to peak value
t
d
= decay time to half value
t
r
x t
d
=8/20µs
Axial Leaded – 6kA > AK6 series
Figure 5 - Typical Peak Pulse Power Rating Curve Figure 6 - Typical V
Figure 7 - Surge Response (8/20 Surge current waveform)
Figure 8 - Pulse Waveform
Vs Junction Temperature
BR
Notes:
The power dissipation causes a change in avalanche
voltage during the surge and the avalanche voltage
eventually returns to the original value when the
transient has passed
Dimensions
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/14
Dimensions Inches Millimeters
A 0.950 +/- 0.040 24.15 +/- 1.00
B 0.095 +/- 0.024 2.4 +/- 0.60
C 0.236 +/- 0.040 6.00 +/- 1.00
D 0.570 max. 14.48 max.
E 0.050 +/- 0.002 1.270 +/- 0.05
F 0.500 max. 12.70 max.
G - 030C 0.161 +/- 0.040 4.10 +/- 1.00
G - 058C/066C
076C
0.189 +/- 0.040 4.8 +/- 1.00
G - 170C/190C 0.320 +/- 0.040 8.13 +/- 1.00
G - 240C 0.370 +/- 0.040 9.4 +/- 1.00
G - 380C/430C 0.543 +/- 0.040 13.8 +/- 1.00
L1/L2 L1 = L2 tolerance +/- 0.04 inch (1.0 mm)
Page 4
Part Marking System
Transient Voltage Suppression Diodes
Axial Leaded – 6kA > AK6 series
Part Marking
6-XXXX
L
F
YWW
Littelfuse Logo
Trace Code Marking
Y:Year Code
WW: Working Week Code
Type 1- Side View
Part Numbering System
AK6
Series Type
Apply to P/N listed below:
AK6-030C
AK6-058C
AK6-066C
AK6-076C
-
XXXX
Stand Off Voltage
(Please Refer to Electrical
Characteristics Chart)
Littelfuse Logo
L
F
6-xxxx
YWW
Trace Code Marking
Y:Year Code
WW: Working Week Code
Type 2 - Top View
Part Marking
Apply to P/N listed below:
AK6-170C
AK6-190C
AK6-240C
AK6-380C
AK6-430C
Packing Options
Part Number
AK6-XXXX AK Package 56 Bulk
Component
Package
Quantity
Packaging
Option
Specifications are subject to change without notice.
© 2014 Littelfuse, Inc.
Revised: 03/04/14
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