TVS Diodes
Axial Leaded - 15kA > AK15-Y Series
AK15-Y Series
RoHS Pb e4
Agency Approvals
Agency
Agency File Number
E128662
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter
Symbol
Value
Operating Storage Temperature Range TSTG -55 to 150
Operating Junction Temperature Range
TJ
-55 to 125
Current Rating1
IPP 15
Note:
1. Rated IPP measured with 8/20 pulse as defined in IEC 61000-4-5 2nd edition.
Unit
°C
ºC
kA
Functional Diagram
Bi-direcctional
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.
Features
• No wear-out nor degrade
surge rating over multiple
transient events as long
as within surge capability
• Ultra high power rating
• Very low clamping voltage
• Both reflow and wave
soldering capable
• Ultra compact: less
than one-tenth the size
of traditional discrete
solutions
•Sharp breakdown voltage
• Low slope resistance
• Bi-directional
• Foldback technology for
superior clamping factor
• Symmetric lead width
for easy soldering during
assembly
• 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)
• EFT protection of data
lines in accordance with
IEC 61000-4-4
•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)
Electrical Characteristics (TA=25°C unless otherwise noted)
Part Part
Numbers Marking
AK15-058C-Y 15-058C
AK15-066C-Y 15-066C
AK15-076C-Y 15-076C
AK15-190C-Y 15-190C
Standoff
Voltage
(VSO) Volts
58
66
76
190
Max.
Reverse
Leakage
(IR)(µ@AV) SO
T@yp8ic5aOlCIR
(µA)
Reverse
Breakdown
Voltage
(VBR) @ IT
Min Max
Volts Volts
Test
Current
IT
Max. Clamping Voltage
VCL
@
Peak Pulse
(IPP)
Current
(mA)
VVoCltLs
(8/2IP0Pμs)
(A)
(10/3IP5P0μs)
(A)
10
15
64 70
10 110 15,000 2,000
10
15
72 80
10 120 15,000 2,000
10
15
85 95
10 150 15,000 2,000
10 15 200 245 10 290 15,000 1,500
Max.Temp
Max.
Coefficient Capacitance Agency
of VBR 0V Bias 10kHz Approval
(%/OC)
0.1
0.1
0.1
0.1
(nF)
12
10
10
3.7
X
X
X
X
Note: Using the 8/20 waveshape as defined in IEC 61000-4-5 2nd Edition.
©2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revision: 07/12/19
