Transient Voltage Suppression Diodes
Surface Mount – 4000W > 4.0SMDJ24A
4.0SMDJ24A
Uni-directional
Description
RoHS
Pb
e3
The 4.0SMDJ24A is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
• 4000W peak pulse power
capability at 10/1000μs
waveform, repetition rate
(duty cycles):0.01%
• For surface mounted
applications in order to
optimize board space
• Low profile package
• 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
• Built-in strain relief
• V
BR
@ T
J
= V
BR
@25°C
x (1+
α
T x (T
J
- 25))
(
α
T:Temperature
Coefficient, typical value
is 0.1%)
Applications
TVS devices are ideal for the protection of I/O Interfaces,
V
CC
bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic
applications.
• Glass passivated chip
junction
• Fast response time:
typically less than 1.0ps
from 0V to BV min
• Excellent clamping
capability
• Low incremental surge
resistance
• High temperature
to reflow soldering
guaranteed: 260°C/40sec
at terminals
• Meet MSL level1, per
J-STD-020, LF maximun
peak of 260
°
C
• 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)
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(T
A
=25
O
C unless otherwise noted)
Parameter
Peak Pulse Power Dissipation at
T
A
=25ºC by 10/1000µs Waveform
(Fig.2)(Note 1), (Note 2)
Power Dissipation on Infinite Heat
Sink at T
L
=50
O
C
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward
Voltage at 100A for Unidirectional
Only
Operating Temperature Range
Storage Temperature Range
Typical Thermal Resistance Junction
to Lead
Typical Thermal Resistance Junction
to Ambient
Symbol
P
PPM
P
D
I
FSM
V
F
T
J
T
STG
R
θJL
R
θJA
Value
4000
6.5
300
3.5
-65 to 150
-65 to 175
15
75
Unit
W
W
A
V
°C
°C
°C/W
°C/W
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above T
J
(initial) =25
O
C per Fig. 3.
2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only, duty cycle=4 per minute maximum.
Functional Diagram
Cathode
Bi-directional
Anode
Uni-directional
Electrical Characteristics
(T =25°C unless otherwise noted)
A
Part
Number
Reverse
Stand off
Marking Voltage
V
R
(Volts)
4PEZ
24.0
Breakdown
Voltage V
BR
(Volts) @ I
T
MIN
26.70
MAX
29.50
Test
Current
I
T
(mA)
1
Maximum
Clamping
Voltage V
C
@ I
pp
(10/1000µS)
(V)
38.9
1
Maximum
Clamping
Voltage V
C
@ I
pp
(8/20µS)
(V)
51.0
Maximum
Peak Pulse
CurrentI
pp
(10/1000µS)
(A)
103.0
Maximum
Peak Pulse
Current I
pp
(8/20µS)
(A)
650.0
Maximum
Reverse
Leakage I
R
@ V
R
(µA)
2
4.0SMDJ24A
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/20/15
Transient Voltage Suppression Diodes
Surface Mount – 4000W > 4.0SMDJ24A
I-V Curve Characteristics
Uni-directional
Vc V
BR
V
R
I
R
V
F
I
T
V
I
pp
P
PPM
V
R
V
BR
V
C
I
R
V
F
Peak Pulse Power Dissipation
-- Max power dissipation
Stand-off Voltage
-- Maximum voltage that can be applied to the TVS without operation
Breakdown Voltage
-- Maximum voltage that flows though the TVS at a specified test current (I
T
)
Clamping Voltage
-- Peak voltage measured across the TVS at a specified Ippm (peak impulse current)
Reverse Leakage Current
-- Current measured at V
R
Forward Voltage Drop for Uni-directional
Ratings and Characteristic Curves
(T =25°C unless otherwise noted)
A
Figure 1 - TVS Transients Clamping Waveform
Voltage Transients
Figure 2 - Peak Pulse Power Rating
1000
Voltage Across TVS
Voltage or Current
P
PPM
-Peak Pulse Power (KW)
TJ initial = Tamb
100
Current Through TVS
10
0.31x0.31" (8.0x8.0mm)
1
Copper Pad Area
0.001
Time
0.01
0.1
1
t
d
-Pulse Width (ms)
10
continues on next page.
Additional Infomarion
Datasheet
Resources
Samples
2
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/20/15
Transient Voltage Suppression Diodes
Surface Mount – 4000W > 4.0SMDJ24A
Ratings and Characteristic Curves
(T =25°C unless otherwise noted)
(Continued)
A
Figure 3 - Peak Pulse Power Derating Curve
100
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
80
60
40
20
0
Figure 4 - Pulse Waveform
150
I
PPM
- Peak Pulse Current, % I
RSM
tr=10µsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
100
Half Value
IPPM
IPPM
2
( )
10/1000µsec. Waveform
as defined by R.E.A
50
0
25
50
75
100 125 150
T
J
- Initial Junction Temperature (ºC)
175
0
td
0
1.0
2.0
t-Time (ms)
3.0
4.0
Figure 5 - Typical Transient Thermal Impedance
Transient Thermal Impedance (
°
C/W)
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
450
400
100
IFSM - Peak Forward Surve Current(A)
10
350
300
250
200
150
100
50
1
0.1
0.01
0.001
0.01
0.1
1
10
100
1000
0
1
10
Number of Cycles at 60 Hz
100
T
P
- Pulse Duration (s)
Figure 7 - Peak Forward Voltage Drop vs Peak Forward
Current (Typical Values)
IF- Peak Forward Current(A)
100
10
1
0.1
0.01
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
VF-Peak Forward Voltage(V)
3
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/20/15
Transient Voltage Suppression Diodes
Surface Mount – 4000W > 4.0SMDJ24A
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
Average ramp up rate (Liquidus Temp (T
A
)
to peak
T
S(max)
to T
A
- Ramp-up Rate
Reflow
- Temperature (T
A
) (Liquidus)
- Time (min to max) (t
s
)
Lead–free
assembly
150°C
200°C
60 – 180 secs
3°C/second max
3°C/second max
217°C
60 – 150 seconds
260
+0/-5
°C
20 – 40 seconds
6°C/second max
8 minutes Max.
260°C
Temperature (T)
T
P
Ramp-up
t
p
Critical Zone
T
L
to T
P
T
L
T
s(max)
t
L
T
s(min)
Ramp-down
Preheat
t
s
25˚C
t 25˚C to Peak
Time (t)
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
Environmental Specifications
High Temp. Storage
HTRB
Temperature Cycling
MSL
H3TRB
RSH
JESD22-A103
JESD22-A108
JESD22-A104
JEDEC-J-STD-020, Level 1
JESD22-A101
JESD22-A111
Physical Specifications
Weight
Case
Polarity
Terminal
0.007 ounce, 0.21 grams
JEDEC DO214AB. Molded plastic body
over glass passivated junction
Color band denotes positive end
(cathode) except Bidirectional.
Matte Tin-plated leads, Solderable per
JESD22-B102
Dimensions
DO-214AB (SMC J-Bend)
Cathode Band
(for Uni-directional products only)
Dimensions
A
Inches
Min
0.114
0.260
0.220
0.079
0.030
-
0.305
0.006
0.129
0.094
-
0.094
Max
0.126
0.280
0.245
0.103
0.060
0.008
0.320
0.012
-
-
0.165
-
Millimeters
Min
2.900
6.600
5.590
2.060
0.760
-
7
.750
0.152
3.300
2.400
2.400
Max
3.200
7
.110
6.220
2.620
1.520
0.203
8.130
0.305
-
-
4.200
-
A
B
H
D
F
G
J
K
L
C
B
C
D
E
F
G
H
I
J
K
L
E
I
Solder Pads
(all dimensions in mm)
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/20/15
4
Transient Voltage Suppression Diodes
Surface Mount – 4000W > 4.0SMDJ24A
Part Numbering System
Part Marking System
4.0SMDJ 24 A
Cathode Band
(for Uni-directional products only)
F
5%
V
BR
VOLTAGE TOLERANCE
Littelfuse Logo
4PEZ
YMXXX
V
R
VOLTAGE
Marking Code
Trace Code Marking
Y:Year Code
M: Month Code
XXX: Lot Code
SERIES
Packaging Options
Part number
4.0SMDJ24A
Component
Package
DO-214AB
Quantity
3000
Packaging
Option
Tape & Reel - 16mm tape/13” reel
Packaging
Specification
EIA STD RS-481
Tape and Reel Specification
0.157
(4.0)
0.63
(16.0)
Cathode
0.315
(8.0)
Optional
7” 7 (187)
.0
13” 13.0 (330)
0.059 DIA
(1.5)
Cover tape
0.80 (20.2)
Arbor Hole Dia.
Dimensions are in inches
(and millimeters).
0.65
(16.4)
Direction of Feed
5
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/20/15
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