Littelfuse 3.0SMC Series - Manual (Page 2)

Transient Voltage Suppression Diodes
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Surface Mount > 3.0SMC Series
TVS Diode Arrays
(SPA ™ Family of Products)
Electrical Characteristics
(T
A
=25°C unless otherwise noted)
Part
Number
(Uni)
Marking
Reverse
Stand off
Voltage V
R
(Volts)
Breakdown
Voltage V
BR
(Volts) @ I
T
Test
Current
I
T
(mA)
Maximum
Clamping
Voltage V
C
@ 8/20 µS
I
pp
(V)
Maximum
Peak Pulse
Current I
pp
@ 8/20 µS
(A)
Maximum
Reverse
Leakage I
R
@ V
R
(µA) MIN MAX
3.0SMC20A YLA 20.0 22.20 24.50 1 42 740 1
3.0SMC24A YLC 24.0 26.70 29.50 1 51 520 1
3.0SMC28A YLE 28.0 31.10 34.40 1 59 470 1
3.0SMC30A YLF 30.0 33.30 36.80 1 62 420 1
3.0SMC33A YLG 33.0 36.70 40.60 1 70 365 1
I-V Curve Characteristics
Voltage Transients
Time
Voltage Across TVS
Current Through TVS
Voltage or Current
Figure 1 - TVS Transients Clamping Waveform
Ratings and Characteristic Curves
(T
A
=25°C unless otherwise noted)
Figure 2 - Peak Pulse Power Rating
0.1
1
10
100
1000
0.001 0.01 0.1 1
P PPM
-Peak Pulse Power (KW
)
10
0.31x0.31" (8.0x8.0mm)
Copper Pad Area
t
d
-Pulse Width (ms)
Vc V BR V R
I R
I T
I pp
V
Uni-directional
V F
P
PPM
Peak Pulse Power Dissipation -- Max power dissipation
V
R
Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation
V
BR
Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (I
T
)
V
C
Clamping Voltage -- Peak voltage measured across the suppressor at a specified Ippm (peak impulse current)
I
R
Reverse Leakage Current -- Current measured at V
R
V
F
Forward Voltage Drop for Uni-directional
continues on next page.