SM4T30CAY STMicroelectronics, SM4T30CAY Datasheet - Page 4

• Manufacturer Part Number: SM4T30CAY
• Description: TRANSIL 400W 30.4V BIDIRECT SMA
• Manufacturer: STMicroelectronics
• Series: TRANSIL™r

Specifications of SM4T30CAY

• Voltage - Reverse Standoff (typ): 26V
• Voltage - Breakdown: 28.9V
• Power (watts): 400W
• Polarization: Bidirectional
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10919-2

Characteristics
4/12
Figure 3.
Figure 5.
Figure 7.
100.0
1000
500
400
300
200
100
10.0
100
1.0
0.1
10
0
0
10
1
C(pF)
P (W)
I (A)
PP
PP
T initial = 25 °C
j
25
Peak pulse power dissipation
versus initial junction temperature
Clamping voltage versus peak
pulse current (exponential
waveform, maximum values)
Junction capacitance versus
reverse applied voltage for
bidirectional types (typical values)
50
SM4T28AY
75
10
100
Pulse = 10/1000 µs
SM4T47CAY
SM4T28CAY
125
SM4T47AY
V
OSC
10 ms
F=1 MHz
150
T
10/1000 µs
=30 mV
j
=25 °C
Doc ID 17862 Rev 1
8/20 µs
V (V)
T (°C)
V (V)
CL
j
R
RMS
175
100
100
Figure 4.
Figure 6.
Figure 8.
1000
10.0
1.00
0.10
0.01
100
1.0
0.1
10
1.0E-03
1.0E-03
1
C(pF)
Z
P (kW)
th(j-a)
PP
Recommended pad layout
Printed circuit board FR4,
copper thickness = 35 µm
/R
1.0E-02
th(j-a)
Peak pulse power versus
exponential pulse duration
(T
Junction capacitance versus
reverse applied voltage for
unidirectional types (typical values)
Relative variation of thermal
impedance, junction to ambient,
versus pulse duration
1.0E-02
j
initial = 25 °C)
1.0E-01
1.0E+00
1.0E-01
10
1.0E+01
SM4T28AY
SM4T47AY
1.0E+00
1.0E+02
V
OSC
F=1 MHz
T
t p (ms)
=30 mV
j
=25 °C
t p (ms)
V (V)
R
SM4TY
1.0E+03
RMS
1.0E+01
100