SM15T
Series
Surface Mount T
RANS
Z
ORB
®
Transient Voltage Suppressor
DO-214AB
(SMC J-Bend)
Breakdown Voltage
6.8 to 220V
Peak Pulse Power
1500W
0.126 (3.20)
0.114 (2.90)
0.245 (6.22)
0.220 (5.59)
uct
rod
wP
Ne
0.121 MIN.
(3.07 MIN.)
0.185 MAX.
(4.69 MAX.)
0.280 (7.11)
0.260 (6.60)
0.012 (0.305)
0.006 (0.152)
0.103 (2.62)
0.079 (2.06)
0.060 (1.52)
0.030 (0.76)
0.320 (8.13)
0.305 (7.75)
0.060 MIN.
(1.52 MIN.)
0.320 REF
Mounting Pad Layout DO-214AB
Dimensions in inches
and (millimeters)
0.008
(0.203)
Max.
Features
• For surface mounted applications in order to optimize
board space • Low profile package • Built-in strain relief
• Glass passivated junction
• Low inductance
• Excellent clamping capability
• 1500W peak pulse power capability with a 10/1000µs
waveform, repetition rate (duty cycle): 0.01%
• Fast response time: theoretically (with no parisitic
inductance) less than 1ps from 0 Volts to V
(BR)
for
undirectional and 5ns for bidirectional types
• High temperature soldering: 250°C/10 seconds at terminals
• Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
Mechanical Data
Case:
JEDEC DO-214AB (SMC) molded plastic over
passivated junction
Terminals:
Solder plated, solderable per MIL-STD-750,
Method 2026
Polarity:
For uni-directional types: Color band denotes
positive end (cathode)
Standard Packaging:
12mm tape (EIA STD RS-481)
Weight:
0.003 ounces, 0.093 grams
Packaging codes/options:
9/3.5K per 13” Reel (16mm Tape)
7/850 EA per 7” Reel (16mm Tape)
Maximum Ratings & Thermal Characteristics
Parameter
Peak pulse power dissipation with
a 10/1000µs waveform
(Notes 1, 2, Fig. 1)
Peak pulse current with a 10/1000µs waveform
(Note 1, Fig. 3)
Power dissipation on infinite heatsink, T
A
= 50°C
Peak forward surge current 10ms single half sine-wave
uni-directional only
Maximum junction temperature
Storage temperature range
Thermal resistance junction to ambient air
(Note 2)
Thermal resistance junction to leads
Symbol
P
PPM
I
PPM
P
M(AV)
I
FSM
T
J
T
STG
R
θJA
R
θJL
Ratings at 25°C ambient temperature unless otherwise specified.
Value
Minimum 1500
See Next Table
6.5
200
150
–65 to +175
75
15
Unit
W
A
W
A
°C
°C
°C/W
°C/W
6/13/00
Notes:
(1) Non-repetitive current pulse, per Fig.3 and derated above T
A
= 25°C per Fig. 2
(2) Mounted on 5.0mm
2
(.013mm thick) land areas
SM15T
Series
Surface Mount T
RANS
Z
ORB
®
Transient Voltage Suppressor
For bidirectional types use the suffix CA (e.g. 1.5SMC10CA). Electrical characteristics apply in both directions.
Electrical Characteristics
(T =25ºC unless otherwise noted)
A
Type
(1)
Device
Marking Code
Uni
Bi
GDE7
BDK7
BDT7
BDX7
GEG7
BEM7
BET7
GEV7
BEX7
BFE7
GFG7
BFK7
BFM7
GGG7
GGV7
GHK7
GHR7
GHR8
Standoff Leakage
Voltage Current
(3)
V
RM
I
RM
@ V
RM
(Volts)
5.80
6.40
8.55
10.2
12.8
15.3
18.8
20.5
23.1
25.6
28.2
30.8
33.3
58.1
85.5
128
171
188
(µA)
1000
500
10.0
5.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Breakdown Voltage
V
BR
@ I
T
(2)
(Volts)
Min
6.45
7.13
9.50
11.4
14.3
17.1
20.9
22.8
25.7
28.5
31.4
34.2
37.1
64.6
95.0
143
190
209
Max
7.14
7.88
10.5
12.6
15.8
18.9
23.1
25.2
28.4
31.5
34.7
37.8
41.0
71.4
105
158
210
231
Test
Current
I
T
(mA)
10
10
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Clamping Voltage Clamping Voltage
V
C
@ I
PP
V
C
@ I
PP
10/1000µs
8/20µs
(Volts)
10.5
11.3
14.5
16.7
21.2
25.2
30.6
33.2
37.5
41.5
45.7
49.9
53.9
92.0
137
207
274
328
(Amps)
143
132
103
90.0
71.0
59.5
49.0
45.0
40.0
36.0
33.0
30.0
28.0
16.3
11.0
7.20
5.50
4.60
(Volts)
13.4
14.5
18.6
21.7
27.2
32.5
39.3
42.8
48.3
53.5
59.0
64.3
69.7
121
178
265
353
388
(Amps)
746
690
538
461
368
308
254
234
207
187
169
156
143
83
56
38
28
26
α
T
Max
10
-4
/°C
SM15T6V8A
SM15T7V5A
SM15T10A
SM15T12A
SM15T15A
SM15T18A
SM15T22A
SM15T24A
SM15T27A
SM15T30A
SM15T33A
SM15T36A
SM15T39A
SM15T68A
SM15T100A
SM15T150A
SM15T200A
SM15T220A
GDE7
GDK7
GDT7
GDX7
GEG7
GEM7
GET7
GEV7
GEX7
GFE7
GFG7
GFK7
GFM7
GGG7
GGV7
GHK7
GHR7
GHR8
5.7
6.1
7.3
7.8
8.4
8.8
9.2
9.4
9.6
9.7
9.8
9.9
10.0
10.4
10.6
10.8
10.8
10.8
NOTES:
(1) For bi-directional devices add “C” for ±10% and “CA” for ±5% tolerance of V
BR
(2) V
BR
measured after I
T
applied for 300µs square wave pulse
(3) For bipolar devices with V
R
=10 Volts or under, the I
T
limit is doubled
APPLICATION NOTES
A 1500W (SMC) device is normally selected when the threat of transients is from lightning induced transients, conducted via external leads or I/O lines. It is also used to protect
against switching transients induced by large coils or industrial motors. Source impedance at component level in a system is usually high enough to limit the current within the peak
pulse current (I
PP
) rating of this series. In an overstress condition, the failure mode is a short circuit.
SM15T
Series
Ratings and
Characteristic Curves
(T
100
Surface Mount T
RANS
Z
ORB
®
Transient Voltage Suppressor
= 25°C unless otherwise noted)
A
Fig. 1 – Peak Pulse Power Rating Curve
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage, %
100
Fig. 2 – Pulse Derating Curve
P
PPM
– Peak Pulse Power (kW)
75
10
50
1
0.31 x 0.31" (8.0 x 8.0mm)
Copper Pad Areas
0.1
0.1µs
1.0µs
10µs
100µs
1.0ms
10ms
25
0
0
25
50
75
100
125
150
175
200
td – Pulse Width (sec.)
T
A
– Ambient Temperature (°C)
Fig. 3 – Pulse Waveform
150
20,000
Fig. 4 – Typical Junction Capacitance
Uni-Directional
C
J
– Junction Capacitance (pF)
10,000
Measured at
Zero Bias
T
J
= 25°C
f = 1.0MHz
Vsig = 50mVp-p
1,000
V
R
, Measured at
Stand-Off
Voltage, V
WM
100
I
PPM
– Peak Pulse Current, % I
RSM
tr = 10µsec.
Peak Value
I
PPM
100
T
J
= 25°C
Pulse Width (td)
is defined as the point
where the peak current
decays to 50% of I
PPM
Half Value – IPP
2
I
PPM
50
10/1000µsec. Waveform
as defined by R.E.A.
td
0
0
1.0
2.0
3.0
4.0
10
1
10
100
400
t – Time (ms)
V
WM
– Reverse Stand-Off Voltage (V)
Fig. 5 – Typical Junction Capacitance
Bi-Directional
10,000
Fig. 6 - Maximum Non-Repetitive Forward
Surge Current Uni-Directional Use Only
200
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
T
J
=T
J
max.
Peak Forward Surge Current,
Amperes
Measured at
Zero Bias
T
J
= 25°C
f = 1.0 MH
Z
V
sig
= 50mVp-p
C
J
– Capacitance, pF
100
1,000
Measured at
Stand-Off
Voltage, V
WM
100
10
1
10
100
400
10
1
10
100
V
WM
– Reverse Stand-Off Voltage (V)
Number of Cycles at 60 Hz
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