© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
TVS Diodes
Axial > 1500W > 1N6373 - 1N6381 Series (ICTE-5 - ICTE-36)
• Working Peak Reverse Voltage Range - 5.0 V to 45 V
• Peak Power - 1500 Watts @ 1 ms
• ESD Rating of Class 3 (>16 KV) per Human Body Model
• Low Leakage < 5 µA Above 10 V
• Response Time is Typically < 1 ns
• Pb-Free Packages are Available*
Features
These devices are designed to protect voltage sensitive
components from high voltage, high-energy transients.
They have excellent clamping capability, high surge
capability, low zener impedance and fast response time.
These devices are the Littelfuse exclusive, cost effective,
highly reliable axial leaded package and are ideally suited
for use in communication systems, numerical controls,
process controls, medical equipment, business machines,
power supplies and many other industrial/consumer
applications, to protect CMOS, MOS and Bipolar
integrated circuits
Description
Rating Symbol Value Unit
Peak Power Dissipation (Note 1) @
TL ” 25°C PPK 1500 W
Steady State Power Dissipation
@ TL “75°C, Lead Length = 3/8 ≤
Derated above TL = 75°C
PPK
5.0
20
W
mW/°C
Thermal Resistance,
Junction-to-Lead R8JL 20 °C/W
Forward Surge Current (Note 2)
@TA = 25°C IFSM 200 A
Operating and Storage
Temperature Range TJ, Tstg
−65 to
+175 °C/W
Maximum Ratings and Thermal Characteristics
1N6373 - 1N6381 Series (ICTE-5 - ICTE-36)
Functional Diagram
Bi-directional
Uni-directional
Cathode Anode
Pb
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are
stress ratings only. Functional operation above the Recommended Operating Conditions is
not implied. Extended exposure to stresses above the Recommended Operating Conditions
may affect device reliability.
1. Nonrepetitive current pulse per Figure 5 and derated above TA = 25°C per Figure 2.
2. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per
minute maximum.
Additional Information
Samples
Resources
Datasheet
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
TVS Diodes
Axial > 1500W > 1N6373 - 1N6381 Series (ICTE-5 - ICTE-36)
Symbol Parameter
IPP Maximum Reverse Peak Pulse Current
VCClamping Voltage @ IPP
VRWM Working Peak Reverse Voltage
IRMaximum Reverse Leakage Current @ VRWM
VBR Breakdown Voltage @ IT
ITTest Current
IFForward Current
VFForward Voltage @ IF
I-V Curve Characteristics (TA = 25C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 3) = 100 A)
Figure 1. Pulse Rating Curve
Ratings and Characteristic Curves
Figure 2. Pulse Derating Curve
Figure 3. Capacitance versus Breakdown Voltage Figure 4. Steady State Power Derating
VBR, BREAKDOWN VOLTAGE (VOLTS)
11 01 00 1000
10,000
1000
100
10
C, CAPACITANCE (pF)
MEASURED @
ZERO BIAS
MEASURED @ VRWM
I
I
V
I
I
I
100
80
60
40
20
002 55 07 51 00 1251 50 175 200
PEAK PULSE DERATING IN % OF
PEAK POWER OR CURRENT @ TA= 25 C°
TA, AMBIENT TEMPERATURE (°C)
s1 ms 10 ms
100
10
1
t, PULSE WIDTH
PPK, PEAK POWER (kW)
NONREPETITIVE
PULSE WAVEFORM
SHOWN IN FIGURE 5
s
5
4
3
2
1
25 50 75 1001 25 1501 75 200
PD, STEADY STATE POWER DISSIPATION (WATTS)
TL, LEAD TEMPERATURE (°C)
3/8
3/8
0
0
"
"
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
TVS Diodes
Axial > 1500W > 1N6373 - 1N6381 Series (ICTE-5 - ICTE-36)
Figure 5. Pulse Waveform Figure 6. Dynamic Impedance
Figure 7. Typical Derating Factor for Duty Cycle
100
50
001 23 4
t, TIME (ms)
VALUE (%)
tr s
tP
PEAK VALUE - IPP
HALF VALUE - IPP
2
PULSE WIDTH (t
P) IS DEFINED
AS THAT POINT WHERE THE
PEAK CURRENT DECAYS TO 50%
OF IPP
.
DERATING FACTOR
1 ms
10 s
1
0.7
0.5
0.3
0.05
0.1
0.2
0.01
0.02
0.03
0.07
100 s
0.10 .2 0.52 51 05 00 01021
D, DUTY CYCLE (%)
PULSE WIDTH
10 ms
1000
500
200
100
50
20
10
5
2
1
0.30 .5 0.71 23 57 10 20 30
VBR, INSTANTANEOUS INCREASE IN V
BR ABOVE VBR(NOM)
(VOLTS)
IT, TEST CURRENT (AMPS)
VBR(MIN)
TL°C
tPs
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
TVS Diodes
Axial > 1500W > 1N6373 - 1N6381 Series (ICTE-5 - ICTE-36)
Electrical Characteristics (TA = 25 ° C unless otherwise noted, VF = 3.5 V Max. @ IF (Note 3) = 53 A)
JEDEC
Device†
(ON Device)
Device
Marking
VRWM
(Note 4)
I
R
@V
RWM
Breakdown Voltage VC @IPP (Volts)
(Note 6)
VC (Volts)
(Note 6) CVBR
VBR (V) (Note 5) @ITVCIPP @ IPP =
1 A
@ IPP =
10 A
(Volts) (µA) Min Nom Max (mA) (Volts) (A) (mV/°C)
1N6373, G 1N6373 5.0 300 6.0 - - 1. 0 9.4 160 7. 1 7. 5 4.0
1N6374, G 1N6374 8.0 25 9.4 - - 10 15 100 11. 3 11. 5 8.0
1N6375, G 1N6375 10 2.0 11. 7 - - 1. 0 16.7 90 13.7 14.1 12
1N6376, G 1N6376 12 2.0 14.1 - - 1. 0 21.2 70 16.1 16.5 14
1N6377, G 1N6377 15 2.0 1 7. 6 - - 1. 0 25 60 20.1 20.6 18
1N6380, G 1N6380 36 2.0 42.4 - - 1. 0 65.2 23 50.6 54.3 50
1N6381, G 1N6381 45 2.0 52.9 - - 1. 0 78.9 19 63.3 70 60
ICTE-5RLG ICTE-5 5.0 300 6.0 - - 1. 0 9.4 160 7. 1 7. 5 4.0
ICTE-10RLG ICTE-10 10 2.0 11. 7 - - 1. 0 16.7 90 13.7 14.1 8.0
ICTE-12RLG ICTE-12 12 2.0 14.1 - - 1. 0 21.2 70 16.1 16.5 12
ICTE-15RLG ICTE-15 15 2.0 1 7. 6 - - 1. 0 25 60 20.1 20.6 14
ICTE-18, G ICTE-18 18 2.0 21.2 - - 1. 0 30 50 24.2 25.2 18
ICTE-36RLG ICTE-36 36 2.0 42.4 - - 1. 0 65.2 23 50.6 54.3 26
3. Square waveform, PW = 8.3 ms, non-repetitive duty cycle.
4. A transient suppressor is normally selected according to the maximum working peak reverse voltage (VRWM), which should be equal to
or greater than the DC or continuous peak operating voltage level.
5. VBR measured at pulse test current IT at an ambient temperature of 25°C and minimum voltage in VBR is to be controlled.
6. Surge current waveform per Figure 5 and derate per Figures 1 and 2.
†The “G’’ suffix indicates Pb-Free package or Pb-Free packages are available.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
TVS Diodes
Axial > 1500W > 1N6373 - 1N6381 Series (ICTE-5 - ICTE-36)
Dimensions
Part Marking System
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. LEAD FINISH AND DIAMETER UNCONTROLLED IN DIMENSION P.
4. 041A-01 THRU 041A-03 OBSOLETE, NEW STANDARD 041A-04.
Physical Specifications
Case Void-free, transfer-molded, thermosetting
plastic
Leads Modified L−Bend providing more contact
area to bond pads
Finish All external surfaces are corrosion
resistant and leads are readily solderable
Mounting Position Any
ORDERING INFORMATION
Device Package Shipping†
1N63xx, G Axial Lead
(Pb-Free) 500 Units/Box
1N63xxRL4, G Axial Lead
(Pb-Free) 1500/Tape & Reell
ICTE-xx, G Axial Lead
(Pb-Free) 500 Units/Box
ICTE-xxRL4, G Axial Lead
(Pb-Free) 1500/Tape & Reel
Flow/Wave Soldering (Solder Dipping)
Peak Temperature : 260OC
Dipping Time : 1/16” from the case for 10 seconds
Dim
Inches Millimeters
Min Max Min Max
A0.335 0.374 8.50 9.50
B0.189 0.209 4.80 5.30
D0.038 0.042 0.96 1.06
K1.000 --- 25.40 ---
P--- 0.050 --- 1.27
D
K
P
PA
K
B
A= Assembly Location
1N63xx= JEDEC Device Code
ICTE-xx = ON Device Code
YY = Year
WW = Work Week
= Pb-Free Package
A
1N
63xx
YYWW
A
ICTE
-xx
YYWW
(Note: Microdot may be in either location)
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.
