Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/13
Axial Leaded – 1500W > 1.5KE series
1.5KE Series
AGENCY AGENCY FILE NUMBER
E128662/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 by
10x1000μs Test Waveform (Fig.2)
(Note 1)
PPPM 1500 W
Steady State Power Dissipation on
Inifinite Heat Sink at TL=75ºC (Fig. 6) 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 RuJL 15 °C/W
Typical Thermal Resistance Junction
to Ambient RuJA 75 °C/W
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above TA = 25°C 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 devices of VBR _
<
200V and VF<5.0V for devices of VBR _
>
201V.
Maximum Ratings and Thermal Characteristics
(TA=25°C unless otherwise noted)
Agency Approvals
• Typical maximum
temperature coefficient
ΔVBR = 0.1% × VBR@25°C
× ΔT
• Glass passivated chip
junction in DO-201
Package
• 1500W peak pulse
capability at 10×1000μs
waveform, repetition rate
(duty cycles):0.01%
• 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
15kV(Air), 8kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Low incremental surge
resistance
• Typical IR less than 1μA
above 13V
• High temperature
soldering guaranteed:
260°C/40 seconds /
0.375”,(9.5mm) lead
length, 5 lbs., (2.3kg)
tension
• Plastic package has
underwriters laboratory
flammability classification
94V-O
• Matte tin lead–free plated
• Halogen free and RoHS
compliant
RoHS
1.5KE Series
Bi-directional
Uni-directional
Functional Diagram
Bi-directional
Uni-directional
Cathode Anode
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/13
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 1.5KE250CA 214.00 237.00 263.00 1 344.0 4.4 1 X
1.5KE300A 1.5KE300CA 256.00 285.00 315.00 1 414.0 3.7 1 X
1.5KE320A 1.5KE320CA 273.00 304.00 336.00 1 441.0 3.5 1 X
1.5KE350A 1.5KE350CA 300.00 332.00 368.00 1 482.0 3.2 1 X
1.5KE400A 1.5KE400CA 342.00 380.00 420.00 1 548.0 2.8 1 X
1.5KE440A 1.5KE440CA 376.00 418.00 462.00 1 602.0 2.5 1 X
1.5KE480A 1.5KE480CA 408.00 456.00 504.00 1 658.0 2.3 1 X
1.5KE510A 1.5KE510CA 434.00 485.00 535.00 1 698.0 2.1 1 X
1.5KE530A 1.5KE530CA 477.00 503.50 556.50 1 725.0 2.1 1 X
1.5KE540A 1.5KE540CA 486.00 513.00 567.00 1 740.0 2.0 1 X
1.5KE550A 1.5KE550CA 495.00 522.50 577.50 1 760.0 2.0 1 X
1.5KE600A 1.5KE600CA 512.00 570.00 630.00 1 828.0 1. 8 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.
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/13
Axial Leaded – 1500W > 1.5KE series
1.5KE Series
P6KE Series
P6KE 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
0.1
1
10
100
1000
0.000001 0.000010.0001 0.001
PPPM-Peak Pulse Power (kW)
td-Pulse Width (Sec.)
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 current that flows though the TVS at a specified test current (IT)
VC Clamping Voltage -- Peak voltage measured across the suppressor at a specified Ippm (peak impulse current)
IR Reverse Leakage Current -- Current measured at VR
VF Forward Voltage Drop for Uni-directional
continues on next page.
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/13
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 ( )
TA-Ambient Temperature (ºC)
Peak Pulse Power (PPP) or Current (IPP)
Derating in Percentage %
0 25 50 75 100 125 150 175 200
100
75
50
25
0
1
10
100
1000
10000
100000
1.010.0100.01000.0
Cj (pF)
Tj=25C
f=
1.0MHz
Vs
ig=50mVp-p
Uni-directional V=0V
Bi-directional V=0V
VBR - Reverse Breakdown Voltage (V)
Uni-directional @ VR
Bi-directional @ VR
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
0255075100 125 150 175 200
Steady State Power Dissipation (W)
TL - Lead Temperature(ºC)
L = 0.375” (9.5mm)
Lead Lengths
Figure 3 - Pulse Derating Curve Figure 4 - Pulse Waveform
Figure 5 - Typical Junction Capacitance Figure 6 - Steady State Power Derating Curve
0
20
40
60
80
100
120
140
160
180
200
11
01
00
Number of Cycles at 60 Hz
IFSM - Peak Forward Surge Current (A)
Figure 7 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
Ratings and Characteristic Curves (TA=25°C unless otherwise noted) (Continued)
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/13
Axial Leaded – 1500W > 1.5KE series
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-B102D.
Dimensions
Dimensions Inches Millimeters
Min Max Min Max
A1.000 - 25.40 -
B 0.285 0.375 7.20 9.50
C 0.038 0.042 0.96 1.07
D 0.190 0.210 4.80 5.30
D
AA
C
B
DO-201
Environmental Specifications
Temperature Cycle JESD22-A104
Pressure Cooker JESD 22-A102
High Temp. Storage JESD22-A103
HTRB JESD22-A108
Thermal Shock JESD22-A106
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 – 180 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) (ts)60 – 150 seconds
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)20 – 40 seconds
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 280°C
Flow/Wave Soldering (Solder Dipping)
Peak Temperature : 265°C
Dipping Time : 10 seconds
Soldering : 1 time
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/04/13
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-296E
1.5KExxxXX-B DO-201 500 BULK Littelfuse Concord Packing Spec. DM-0016
OPTION CODE:
BLANK Reel Tape
-B Bulk Packaging
SERIES CODE
1.5KE xxx XX X
TYPE CODE:
A Uni-Directional (5%
VBR
Voltage Tolerance)
CA Bi-Directional (5%
VBR
Voltage Tolerance)
VBR
VOLTAGE CODE
(Refer to the Electrical Characteristics table)
Part Marking System
F
1.5KEXXX
YYWW
Trace Code Marking
YY:Year Code
WW: Week Code
Product Type
Littelfuse Logo
Cathode Band
Tape and Reel Specification
2.062+/- 0.059
2.56
0.20+/-0.020
2.75
0.048
(330.2)
R
ecess Depth Max. 0.75 (19.05)
Off Center
either side
0.039(1.0)
Dimensions are in
inches/mm
0.25
(65.00)
(5.08+/- 0.508)
(52.37+/- 1.5)
(6.35)
(1.22)
(69.85)
13.0
(76.2)
3.0
0.68
(17. 27)
Direction of Feed
