TPSMA6.8 thru TPSMA43A
Vishay Semiconductors
formerly General Semiconductor
Document Number 88405
www.vishay.com
06-May-02
1
Surface Mount Automotive
Transient Voltage Suppressors
Breakdown Voltage 6.8 to 43.0V
Peak Pulse Power 400W
Maximum Ratings and Thermal Characteristics
(T
A
= 25°C unless otherwise noted)
Parameter
Symbol
Value
Unit
Peak power dissipation with a 10/1000
µ
s waveform
(1)(2)
(Fig. 3)
P
PPM
Minimum 400
W
Peak power pulse current with a
10/1000
µ
s waveform
(1)
(Fig. 1)
I
PPM
See Next Table
A
Peak forward surge current 8.3ms single half sine-wave
(3)
I
FSM
40
A
Maximum instantaneous forward voltage at 25A
(3)
V
F
3.5
V
Operating junction and storage temperature range
T
J
, T
STG
65 to +185
°C
Notes: (1) Non-repetitive current pulse, per Fig. 3 and derated above T
A
= 25°C per Fig. 2
(2) Mounted on P.C.B. with 0.2 x 0.2" (5.0 x 0.5mm) copper pads attached to each terminal
(3) Measured on 8.3ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minutes maximum
0.157 (3.99)
0.177 (4.50)
0.006 (0.152)
0.012 (0.305)
0.030 (0.76)
0.060 (1.52)
0.008 (0.203) MAX.
0.194 (4.93)
0.208 (5.28)
0.100 (2.54)
0.110 (2.79)
0.078 (1.98)
0.090 (2.29)
0.049 (1.25)
0.065 (1.65)
Cathode Band
Available in uni-directional only
DO-214AC (SMA)
Dimensions in inches
and (millimeters)
Patented*
Mechanical Data
Case: JEDEC DO-214AC molded plastic body over
passivated chip
Terminals: Solder plated, solderable per
MIL-STD-750, Method 2026
Polarity: The color band denotes the cathode,
which is positive with respect to the anode under
normal TVS operation
Mounting Position: Any
Weight: 0.002 oz., 0.064 g
Packaging codes/options:
5A/7.5K per 13" Reel (12mm Tape), 90K/box
11/1.8K per 7" Reel (12mm Tape), 36K/box
0.060 MIN
(1.52 MIN)
0.050 MIN
(1.27 MIN)
0.220 REF
(5.58)
0.094 MAX
(2.38 MAX)
Mounting Pad Layout
*Patent #'s
4,980,315
5,166,769
5,278,094
Features
· Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
· Ideal for automated placement
· Low profile package
· Built-in strain relief
· Exclusive patented PAR
®
oxide passivated
chip construction
· 400W peak pulse power capability with a
10/1000ms waveform, repetition rate
(duty cycle): 0.01%
· Excellent clamping capability
· Low incremental surge resistance
· Very fast response time
· For devices with V
(BR)
10V I
D
are typically
less than 1.0mA at T
A
= 150°C
· Designed for under the hood surface mount
applications
· High temperature soldering:
250°C/10 seconds at terminals
TPSMA6.8 thru TPSMA43A
Vishay Semiconductors
formerly General Semiconductor
Document Number 88405
www.vishay.com
06-May-02
3
Ratings and
Characteristic Curves
(T
A
= 25°C unless otherwise noted)
Fig.1 Peak Pulse Power Rating Curve
0.1
1.0
10
100
0.1
µ
s
1.0
µ
s
10
µ
s
100
µ
s
1.0ms
10ms
P
PPM,
Peak Power (KW)
C
J
, Junction Capacitance, pF
V
(BR)
, Breakdown Voltage (V)
10
100
1,000
10,000
1
10
100
200
td, Pulse Width, sec.
Fig. 4 Typical Junction Capacitance
Fig. 2 Pulse Derating Curve
0
25
50
75
100
0
50
100
150
200
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage (%)
T
A
, Ambient Temperature (
°
C)
T
J
= 25
°
C
f = 1 MHz
Vsig = 50mVp-p
V
R
measured
at zero bias
V
R
measured
at stand-off
voltage, V
WM
T
A
= 25
°
C
Non-repetitive pulse
waveform shown in Fig. 3
0.2 x 0.2" (5.0 x 5.0mm)
copper pad areas
200
100
Number of Cycles at 60 Hz
I
FSM,
Peak Forward Surge Current (A)
10
50
1
10
50
5
100
T
J
= T
J
max
8.3ms single half sine-wave
(JEDEC method)
Fig. 5 Maximum Non-Repetitive
Peak Forward Surge Current
0
50
100
150
I
PPM
--
Peak Pulse Current, % I
RSM
Fig. 3 Pulse Waveform
T
J
= 25
°
C
Pulse Width (td)
is defined as the point
where the peak current
decays to 50% of I
PPM
tr = 10
µ
sec.
Peak Value
I
PPM
Half Value -- IPP
I
PPM
2
td
10/1000
µ
sec. Waveform
as defined by R.E.A.
0
1.0
2.0
3.0
4.0
t -- Time (ms)
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