TVS Diodes
Axial Leaded - 15kA > AK15-Y Series
RoHS Pb e4
AK15-Y Series
Descriptions
The AK15-Y series of high power TVS diode is specially
designed for meeting severe surge test environment of
both AC and DC line protection applications. It features a
very fast response and ultra low clamping characteristics as
compared to MOVs (Metal Oxide Varistors). It accomplishes
this by virtue of the Littelfuse FoldbackTM technology,which
provides a clamping voltage lower than the avalanche voltage
(but above the rated working voltage); therefore, any voltage
rise due to increased current conduction is maintained at a
minimum magnitude, providing the best possible protection
level.These AK components can be connected in series and
/ or parallel to create a very high surge current protection
solution.
Agency Approvals
Agency
Agency File Number
Features
E128662
• No wear-out nor degrade
surge rating over multiple
transient events as long
as within surge capability
• IEC 61000-4-2 ESD 15 kV
(air), 8 kV (contact) rating
• Lightning, 15 kA (8/20 as
defined in IEC 61000-4-5
2nd Edition)
Maximum Ratings andThermal Characteristics
(TA=25OC unless otherwise noted)
• Ultra high power rating
• Very low clamping voltage
• Both reflow and wave
soldering capable
• EFT protection of data
lines in accordance with
IEC 61000-4-4
Parameter
Symbol
Value
Unit
• Halogen-free and RoHS
compliant
• Glass passivated junction
• Pb-free E4 means 2nd level
interconnect is Pb-free
and the terminal finish
material is silver (IPC/
JEDEC J-STD-609A.01)
Operating StorageTemperature Range
Operating JunctionTemperature Range
Current Rating1
TSTG
TJ
-55 to 150
-55 to 125
15
°C
ºC
kA
• Ultra compact: less
than one-tenth the size
of traditional discrete
solutions
• Sharp breakdown voltage
• Low slope resistance
• Bi-directional
IPP
Note:
1. Rated IPP measured with 8/20 pulse as defined in IEC 61000-4-5 2nd edition.
Functional Diagram
• Foldback technology for
superior clamping factor
• Symmetric lead width
for easy soldering during
assembly
Bi-direcctional
Electrical Characteristics (TA=25°C unless otherwise noted)
Reverse
Breakdown
Voltage
Test
Max. ClampingVoltage
Max.Temp
Coefficient Capacitance
ofVBR
Max.
Max.
Current VCL @ Peak Pulse Current
IT
Agency
Approval
Standoff
Voltage
(VSO)Volts (IR) @VSO
(µA)
Reverse Typical IR
(IPP)
0V Bias 10kHz
Part
Numbers
Part
Marking
Leakage @ 85OC
(VBR) @ IT
(µA)
IPP
IPP
Min
Volts Volts
Max
VCL
Volts
(mA)
(8/20μs) (10/350μs)
(A)
(%/OC)
(nF)
(A)
AK15-058C-Y 15-058C
AK15-066C-Y 15-066C
AK15-076C-Y 15-076C
AK15-190C-Y 15-190C
58
66
10
10
10
10
15
15
15
15
64
72
70
80
10
10
10
10
110
120
150
290
15,000
15,000
15,000
15,000
2,000
2,000
2,000
1,500
0.1
0.1
0.1
0.1
16
12
12
5
X
X
X
X
76
85
95
190
200
245
Note: Using the 8/20 waveshape as defined in IEC 61000-4-5 2nd Edition.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 12/16/20