© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: JC.10/30/20
TVS Diodes
Axial Leaded – 1500W > 1.5KE series
Agency Agency File Number
E230531
TVS devices are ideal for the protection of I/O interfaces,
VCC bus and other vulnerable circuits used in telecom,
computer, industrial and consumer electronic applications.
Applications
Features
The 1.5KE Series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Description
Parameter Symbol Value Unit
Peak Pulse Power Dissipation (Fig.2) by
10/1000μs Test Waveform (Fig.4) (Note 1)
-Single Die Parts
PPPM 1500 W
Peak Pulse Power Dissipation(Fig.2) by
10/1000μs Test Waveform(Fig.4)(Note 1)
-Stacked Die Parts (Note 4)
PPPM 2000 W
Steady State Power Dissipation on Infinite Heat
Sink at TL=75ºC PD6.5 W
Peak Forward Surge Current, 8.3ms Single Half
Sine Wave Unidirectional Only (Note 2) IFSM 200 A
Maximum Instantaneous Forward Voltage at
100A for Unidirectional Only (Note 3) VF3.5/5.0 V
Operating Junction and Storage Temperature
Range TJ, TSTG
-55 to
175 °C
Typical Thermal Resistance Junction to Lead RθJL 15 °C/W
Typical Thermal Resistance Junction to Ambient RθJA 75 °C/W
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Agency Approvals
• 1500W peak pulse
capability at 10/1000μs
waveform, repetition rate
(duty cycles):0.01%
• Glass passivated chip
junction in DO-201
Package
• Fast response time:
typically less than 1.0ps
from 0 Volts to BV min
• Excellent clamping
capability
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• IEC-61000-4-2 ESD
30kV(Air), 30kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2
• EFT protection of data
lines in accordance with
IEC 61000-4-4
• Low incremental surge
resistance
• Typical IR less than 1μA
when VBR min>12V
• High temperature
to reflow soldering
guaranteed: 260°C/30sec
/ 0.375”,(9.5mm) lead
length, 5 lbs., (2.3kg)
tension
• VBR @ TJ= VBR@25°C
x (1+αT x (TJ - 25))
(αT:Temperature
Coefficient, typical value
is 0.1%)
• Plastic package is
flammability rated V-0 per
Underwriters Laboratories
• Matte tin lead–free plated
• Halogen free and RoHS
compliant
• Pb-free E3 means 2nd
level interconnect is
Pb-free and the terminal
finish material is tin(Sn)
(IPC/JEDEC J-STD-
609A.01)
1.5KE Series
Bi-directional
Uni-directional
Functional Diagram
Bi-directional
Uni-directional
Cathode Anode
RoHS
Pb
e3
Additional Infomarion
Datasheet
Resources
Samples
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above TJ (initial) =25OC per Fig. 3.
2. Measured on 8.3ms single half sine wave or equivalent square wave, duty cycle=4 per minute maximum.
3. VF < 3.5V for single die parts and VF< 5.0V for stacked-die parts.
4. For stacked die component details, please refer to part numbers labeled by * in Electrical Characteristics.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: JC.10/30/20
TVS Diodes
Axial Leaded – 1500W > 1.5KE series
Electrical Characteristics (TA=25°C unless otherwise noted)
Part
Number
(Uni)
Part
Number
(Bi)
Reverse Stand
off Voltage VR
(Volts)
Breakdown Voltage VBR
(Volts) @ IT
Test
Current
IT (mA)
Maximum
Clamping
Voltage
VC @ Ipp
(Volts)
Maximum Peak
Pulse Current
Ipp (A)
Maximum
Reverse
Leakage IR @ VR
(µA)
Agency
Approval
Min. Max.
1.5KE6.8A 1.5KE6.8CA 5.80 6.45 7. 1 4 10 10.5 144.8 1000 X
1.5KE7.5A 1.5KE7.5CA 6.40 7. 1 3 7.88 10 11. 3 134.5 500 X
1.5KE8.2A 1.5KE8.2CA 7.02 7.79 8.61 10 12.1 125.6 200 X
1.5KE9.1A 1.5KE9.1CA 7.78 8.65 9.50 1 13.4 113.4 50 X
1.5KE10A 1.5KE10CA 8.55 9.50 10.50 1 14.5 104.8 10 X
1.5KE11A 1.5KE11CA 9.40 10.50 11.60 1 15.6 97.4 5 X
1.5KE12A 1.5KE12CA 10.20 11.40 12.60 1 16.7 91.0 5 X
1.5KE13A 1.5KE13CA 11. 10 12.40 13.70 1 18.2 83.5 1 X
1.5KE15A 1.5KE15CA 12.80 14.30 15.80 1 21.2 71.7 1 X
1.5KE16A 1.5KE16CA 13.60 15.20 16.80 1 22.5 67.6 1 X
1.5KE18A 1.5KE18CA 15.30 1 7. 1 0 18.90 1 25.2 60.3 1 X
1.5KE20A 1.5KE20CA 1 7. 1 0 19.00 21.00 1 27.7 54.9 1 X
1.5KE22A 1.5KE22CA 18.80 20.90 23.10 1 30.6 49.7 1 X
1.5KE24A 1.5KE24CA 20.50 22.80 25.20 1 33.2 45.8 1 X
1.5KE27A 1.5KE27CA 23.10 25.70 28.40 1 37.5 40.5 1 X
1.5KE30A 1.5KE30CA 25.60 28.50 31.50 1 41.4 36.7 1 X
1.5KE33A 1.5KE33CA 28.20 31.40 34.70 1 45.7 33.3 1 X
1.5KE36A 1.5KE36CA 30.80 34.20 37.80 1 49.9 30.5 1 X
1.5KE39A 1.5KE39CA 33.30 37.10 41.00 1 53.9 28.2 1 X
1.5KE43A 1.5KE43CA 36.80 40.90 45.20 1 59.3 25.6 1 X
1.5KE47A 1.5KE47CA 40.20 44.70 49.40 1 64.8 23.5 1 X
1.5KE51A 1.5KE51CA 43.60 48.50 53.60 1 70.1 21.7 1 X
1.5KE56A 1.5KE56CA 47.80 53.20 58.80 1 77.0 19.7 1 X
1.5KE62A 1.5KE62CA 53.00 58.90 65.10 1 85.0 1 7. 9 1 X
1.5KE68A 1.5KE68CA 58.10 64.60 71.40 1 92.0 16.5 1 X
1.5KE75A 1.5KE75CA 64.10 71.30 78.80 1 103.0 14.8 1 X
1.5KE82A 1.5KE82CA 70.10 77.90 86.10 1 113.0 13.5 1 X
1.5KE91A 1.5KE91CA 77.80 86.50 95.50 1 125.0 12.2 1 X
1.5KE100A 1.5KE100CA 85.50 95.00 105.00 1 137.0 11. 1 1 X
1.5KE110A 1.5KE110CA 94.00 105.00 116.00 1 152.0 10.0 1 X
1.5KE120A 1.5KE120CA 102.00 114.00 126.00 1 165.0 9.2 1 X
1.5KE130A 1.5KE130CA 111. 0 0 124.00 137.00 1 179.0 8.5 1 X
1.5KE150A 1.5KE150CA 128.00 143.00 158.00 1 207.0 7. 3 1 X
1.5KE160A 1.5KE160CA 136.00 152.00 168.00 1 219.0 6.9 1 X
1.5KE170A 1.5KE170CA 145.00 162.00 179.00 1 234.0 6.5 1 X
1.5KE180A 1.5KE180CA 154.00 171.00 189.00 1 246.0 6.2 1 X
1.5KE200A 1.5KE200CA 171.00 190.00 210.00 1 274.0 5.5 1 X
1.5KE220A 1.5KE220CA 185.00 209.00 231.00 1 328.0 4.6 1 X
1.5KE250A - 214.00 237.00 263.00 1 344.0 4.4 1 X
- 1.5KE250CA* 214.00 237.00 263.00 1 344.0 5.9 1 X
1.5KE300A* 1.5KE300CA* 256.00 285.00 315.00 1 414.0 4.9 1 X
1.5KE320A* 1.5KE320CA* 273.00 304.00 336.00 1 441.0 4.6 1 X
1.5KE350A* 1.5KE350CA* 300.00 332.00 368.00 1 482.0 4.2 1 X
1.5KE400A* 1.5KE400CA* 342.00 380.00 420.00 1 548.0 3.7 1 X
1.5KE440A* 1.5KE440CA* 376.00 418.00 462.00 1 602.0 3.1 1 X
1.5KE480A* 1.5KE480CA* 408.00 456.00 504.00 1 658.0 3.1 1 -
1.5KE510A* 1.5KE510CA* 434.00 485.00 535.00 1 698.0 2.9 1 -
1.5KE530A* 1.5KE530CA* 451.00 503.50 556.50 1 725.0 2.8 1 -
1.5KE540A* 1.5KE540CA* 460.00 513.00 567.00 1 740.0 2.8 1 -
1.5KE550A* 1.5KE550CA* 468.00 522.50 577.50 1 760.0 2.7 1 -
1.5KE600A* 1.5KE600CA* 512.00 570.00 630.00 1 828.0 2.5 1 -
For bidirectional type having VR of 10 volts and less, the IR limit is double.
For parts without A, the VBR is ± 10% and VC is 5% higher than with A parts, the parts without A are currently available, but not recommended for new designs. The parts with A are preferred.
For stack-die parts, use * to label the part number.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: JC.10/30/20
TVS Diodes
Axial Leaded – 1500W > 1.5KE series
I-V Curve Characteristics
Voltage Transients
Time
Voltage Across TVS
Current Through TVS
Voltage or Current
Figure 1 - TVS Transients Clamping Waveform
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Figure 2 - Peak Pulse Power Rating
Vc VBR VR
IR
IT
Ipp
V
Uni-directional
VF
Vc VBR VR
IR
IT
Ipp
V
Vc
VBR
VR
Ipp
IR
IT
Bi-directional
PPPM Peak Pulse Power Dissipation -- Max power dissipation
VR Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation
VBR Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (IT)
VC Clamping Voltage -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current)
IR Reverse Leakage Current -- Current measured at VR
VF Forward Voltage Drop for Uni-directional
t
d
-Pulse Width (ms)
PPPM-Peak Pulse Power (kW)
0.1
1
10
100
0.0010.010.1 110
stacked-die, 2kW
at 10x1000
µs, 25°C
TJ initial = Tamb
Single die, 1.5kW
at 10x1000
µs, 25°C
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: JC.10/30/20
TVS Diodes
Axial Leaded – 1500W > 1.5KE series
IPPM- Peak Pulse Current, % IRSM
0
0
50
100
150
1.0 2.0 3.0 4.0
tr=10µsec
Peak Value
IPPM
IPPM
2
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
10/1000µsec. Waveform
as defined by R.E.A
td
t-Time (ms)
Half Value
IPPM ( )
1
10
100
1000
10000
100000
110100 1000
Uni-directional V=0V
Bi-directional V=0V
Bi-directional V=
V
R
Uni-directional V=
V
R
Cj(pF)
VBR
-Reverse Breakdown Voltage(V)
Figure 4 - Pulse Waveform
Figure 5 - Typical Junction Capacitance
0
20
40
60
80
100
120
140
160
180
200
110100
Number of Cycles at 60 Hz
IFSM - Peak Forward Surge Current (A)
Figure 7 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
Figure 3 - Peak Pulse Power Derating Curve
Ratings and Characteristic Curves (TA=25°C unless otherwise noted) (Continued)
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
0
25
50
75
100
0255075100 125 150 175 200
T
J
- Initial Junction Temperature (ºC)
Transient Thermal Impedance (°C/W)
-Pulse Duration (s)
TP
0.1
1
10
100
0.01 0.11 10 100 1000
Figure 6 - Typical Transient Thermal Impedance
IF-Peak Forward Current(A)
VF-Peak Forward Voltage(V)
0.1
1.0
10.0
100.0
0.01.0 2.03.0 4.05.0 6.07.0 8.09.0
Stacked-die
Single die
Figure 8 - Peak Forward Voltage Drop vs Peak Forward
Current (Typical Values)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: JC.10/30/20
TVS Diodes
Axial Leaded – 1500W > 1.5KE series
Physical Specifications
Weight 0.045oz., 1.2g
Case JEDEC DO-201 molded plastic body over passivated junction.
Polarity Color band denotes the cathode except Bipolar.
Terminal Matte Tin axial leads, solderable per
JESD22-B102.
Dimensions
Dimensions Inches Millimeters
Min Max Min Max
A1.000 - 25.40 -
B0.285 0.375 7.20 9.50
C0.038 0.042 0.96 1.07
D0.190 0.210 4.80 5.30
D
AA
C
B
Cathode Band
(for uni-directional products only)
DO-201
Soldering Parameters
Temperature (T)
Time (t)
Ts(min)
Ts(max)
TL
TP
ts
Preheat
tL
tp
Ramp-up Critical Zone
TL to TP
Ramp-down
t 25˚C to Peak
25˚C
Reflow Condition Lead–free assembly
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)60 – 120 secs
Average ramp up rate (Liquidus Temp (TL) to peak 3°C/second max
TS(max) to TL - Ramp-up Rate 3°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Time (min to max) (tL)60 – 150 seconds
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak Temperature (tp)30 seconds max
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 260°C Flow/Wave Soldering (Solder Dipping)
Peak Temperature : 265OC
Dipping Time : 10 seconds
Soldering : 1 time
Environmental Specifications
High Temp. Storage JESD22-A103
HTRB JESD22-A108
Temperature Cycling JESD22-A104
H3TRB JESD22-A101
RSH JESD22-B106
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: JC.10/30/20
TVS Diodes
Axial Leaded – 1500W > 1.5KE series
Part Numbering System
Packaging
Part Number Component Package Quantity Packaging Option Packaging Specification
1.5KExxxXX DO-201 1200 Tape & Reel EIA STD RS-296
1.5KExxxXX-B DO-201 500 BULK Littelfuse Spec.
Option Code:
Blank Reel Tape
-B Bulk Packaging
Series Code
1.5KE xxx XX X
Type Code:
A Uni-Directional (5%
V
BR
Voltage Tolerance)
CA Bi-Directional (5%
V
BR
Voltage Tolerance)
V
BR
Voltage Code
(Refer to the Electrical Characteristics table)
Part Marking System
F
1.5KEXXX
YYWW
YY:Year Code
WW: Week Code
Product Type
Cathode Band
(for uni-directional
products only)
Tape and Reel Specification
2.063+0.079/-0.039
2.56
0.394+/-0.020
2.75
0.047
(330.2)
Recess Depth Max. 0.75 (19.05)
Off Center
either side
0.028(0.7)
Dimensions are in
inches/mm
0.236
(65.0)
(10.0+/-0.5)
(53.0+2.0/-1.0)
(6.0)
(1.2)
(69.85)
13.0
(76.2)
3.0
0.68
(17.27)
Direction of Feed
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.