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©2007 Littelfuse
Specifications are subject to change without notice.
69
Transient Voltage Suppression Diodes
Axial Leaded – 1500W
1.5KE Series
AGENCY AGENCY FILE NUMBER
E128662/E230531
1.5KE Series
RoHS
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
5IF,&4FSJFTJTEFTJHOFETQFDJmDBMMZUPQSPUFDU
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.1)
(Note 1)
PPPM 1500 W
Steady State Power Dissipation on
inifinite heat sink at TL=75ºC (Fig. 5) 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 T
J, TSTG -55 to 175 °C
Typical Thermal Resistance Junction
to Lead RuJL 20 °C/W
Typical Thermal Resistance Junction
to Ambient RuJA 75 °C/W
Notes:
1. Non-repetitive current pulse , per Fig. 3 and derated above TA = 25OC per Fig. 2.
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=25OC unless otherwise noted)
Agency Approvals
t 3P)4DPNQMJBOU
t 5ZQJDBMNBYJNVN
temperature coefficient
Δ VBR = 0.1% × VBR@25°C
t (MBTTQBTTJWBUFEDIJQ
KVODUJPOJO%0
Package
t 8QFBLQVMTF
capability at 10×1000μs
waveform, repetition rate
(duty cycles):0.01%
t 'BTUSFTQPOTFUJNF
typically less than 1.0ps
from 0 Volts to BV min
t &YDFMMFOUDMBNQJOH
capability
t -PXJODSFNFOUBMTVSHF
resistance
t 5ZQJDBM*R less than 1μA
above 13V
t )JHIUFNQFSBUVSF
soldering guaranteed:
260°C/40 seconds /
wNNMFBE
length, 5 lbs., (2.3kg)
tension
t 1MBTUJDQBDLBHFIBT
Underwriters Laboratory
Flammability classification
94V-O
t .BUUF5JO-FBEoGSFF
plated
70www.littelfuse.com
©2007 Littelfuse Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Axial Leaded – 1500W
1.5KE Series
Electrical Characteristics
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
,&" ,&$" 5.80 6.45 7.14 10 10.5 144.8 1000 X
,&" ,&$" 6.40 7.13 7.88 10 11.3 134.5 500 X
,&" ,&$" 7.02 7.79 8.61 10 12.1 125.6 200 X
,&" ,&$" 7.78 8.65 9.50 1 13.4 113.4 50 X
,&" ,&$" 8.55 9.50 10.50 1 14.5 104.8 10 X
,&" ,&$" 9.40 10.50 11.60 1 15.6 97.4 5 X
,&" ,&$" 10.20 11.40 12.60 1 16.7 91.0 5 X
,&" ,&$" 11.10 12.40 13.70 1 18.2 83.5 1 X
,&" ,&$" 12.80 14.30 15.80 1 21.2 71.7 1 X
,&" ,&$" 13.60 15.20 16.80 1 22.5 67.6 1 X
,&" ,&$" 15.30 17.10 18.90 1 25.2 60.3 1 X
,&" ,&$" 17.10 19.00 21.00 1 27.7 54.9 1 X
,&" ,&$" 18.80 20.90 23.10 1 30.6 49.7 1 X
,&" ,&$" 20.50 22.80 25.20 1 33.2 45.8 1 X
,&" ,&$" 23.10 25.70 28.40 1 37.5 40.5 1 X
,&" ,&$" 25.60 28.50 31.50 1 41.4 36.7 1 X
,&" ,&$" 28.20 31.40 34.70 1 45.7 33.3 1 X
,&" ,&$" 30.80 34.20 37.80 1 49.9 30.5 1 X
,&" ,&$" 33.30 37.10 41.00 1 53.9 28.2 1 X
,&" ,&$" 36.80 40.90 45.20 1 59.3 25.6 1 X
,&" ,&$" 40.20 44.70 49.40 1 64.8 23.5 1 X
,&" ,&$" 43.60 48.50 53.60 1 70.1 21.7 1 X
,&" ,&$" 47.80 53.20 58.80 1 77.0 19.7 1 X
,&" ,&$" 53.00 58.90 65.10 1 85.0 17.9 1 X
,&" ,&$" 58.10 64.60 71.40 1 92.0 16.5 1 X
,&" ,&$" 64.10 71.30 78.80 1 103.0 14.8 1 X
,&" ,&$" 70.10 77.90 86.10 1 113.0 13.5 1 X
,&" ,&$" 77.80 86.50 95.50 1 125.0 12.2 1 X
,&" ,&$" 85.50 95.00 105.00 1 137.0 11.1 1 X
,&" ,&$" 94.00 105.00 116.00 1 152.0 10.0 1 X
,&" ,&$" 102.00 114.00 126.00 1 165.0 9.2 1 X
,&" ,&$" 111.00 124.00 137.00 1 179.0 8.5 1 X
,&" ,&$" 128.00 143.00 158.00 1 207.0 7.3 1 X
,&" ,&$" 136.00 152.00 168.00 1 219.0 6.9 1 X
,&" ,&$" 145.00 162.00 179.00 1 234.0 6.5 1 X
,&" ,&$" 154.00 171.00 189.00 1 246.0 6.2 1 X
,&" ,&$" 171.00 190.00 210.00 1 274.0 5.5 1 X
,&" ,&$" 185.00 209.00 231.00 1 328.0 4.6 1 X
,&" ,&$" 214.00 237.00 263.00 1 344.0 4.4 1 X
,&" ,&$" 256.00 285.00 315.00 1 414.0 3.7 1X
,&" ,&$" 300.00 332.00 368.00 1 482.0 3.2 1 X
,&" ,&$" 342.00 380.00 420.00 1 548.0 2.8 1 X
,&" ,&$" 376.00 418.00 462.00 1 602.0 2.5 1 X
,&" ,&$" 408.00 456.00 504.00 1 658.0 2.3 1 X
,&" ,&$" 434.00 485.00 535.00 1 698.0 2.1 1 X
,&" ,&$" 477.00 503.50 556.50 1 725.0 2.1 1 X
,&" ,&$" 459.00 513.00 567.00 1 740.0 2.0 1 X
,&" ,&$" 495.00 522.50 577.50 1 760.0 2.0 1 X
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.
www.littelfuse.com
©2007 Littelfuse
Specifications are subject to change without notice.
71
Transient Voltage Suppression Diodes
Axial Leaded – 1500W
1.5KE Series
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
0.1
1
10
100
1000
0.000001 0.00001 0.0001 0.001
PPPM-Peak Pulse Power (kW)
td-Pulse Width (Sec.)
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
1.0 10.0 100.0 1000.0
Cj (pF)
Tj=25C
f=1.0MHz
Vsig=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
0 25 50 75 100 125 150 175 200
Steady State Power Dissipation (W)
TL - Lead Temperature(ºC)
L = 0.375” (9.5mm)
Lead Lengths
Figure 1 - Peak Pulse Power Rating Curve Figure 2 - Pulse Derating Curve
Figure 3 - Pulse Waveform Figure 4 - Typical Junction Capacitance
Figure 5 - Steady State Power Derating Curve
0
20
40
60
80
100
120
140
160
180
200
1 10 100
Number of Cycles at 60 Hz
IFSM - Peak Forward Surge Current (A)
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
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©2007 Littelfuse Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Axial Leaded – 1500W
1.5KE Series
Physical Specifications
Weight 0.045oz., 1.2g
Case +&%&$%0NPMEFEQMBTUJDCPEZPWFS
QBTTJWBUFEKVODUJPO
Polarity Color band denotes the cathode except
Bipolar.
Terminal Matte Tin axial leads, solderable per
+&4%#%
Dimensions
Dimensions Inches Millimeters
Min Max Min Max
A 1.000 - 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 +&4%"
Pressure Cooker +&4%"
High Temp. Storage +&4%"
HTRB +&4%"
Thermal Shock +&4%"
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 -FBEoGSFFBTTFNCMZ
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)oTFDT
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)oTFDPOET
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)oTFDPOET
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 : 265OC
Dipping Time : 10 seconds
Soldering : 1 time
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©2007 Littelfuse
Specifications are subject to change without notice.
73
Transient Voltage Suppression Diodes
Axial Leaded – 1500W
1.5KE Series
Part Numbering System
Packaging
Part Number Component
Package Quantity Packaging
Option Packaging Specification
,&xxxXX DO-201 1200 Tape & Reel &*"45%34&
,&xxxXXB DO-201 500 BOX Littelfuse Concord Packing Spec. DM-0016
VO LTAG E
BI-DIRECTIONAL
5% VOLTAGE TOLERANCE
SERIES
1.5KE XXX C A
Option: Suffix B is for bulk packing.
Part Marking System
F
1.5KEXXX
Product Type
Littelfuse Logo
Cathode Band