ESDA5V3SC5 STMicroelectronics, ESDA5V3SC5 Datasheet - Page 6

• Manufacturer Part Number: ESDA5V3SC5
• Description: TRANSIL ARRAY QUAD ESD SOT23-5
• Manufacturer: STMicroelectronics
• Series: TRANSIL™r

Specifications of ESDA5V3SC5

• Voltage - Reverse Standoff (typ): 3V
• Voltage - Breakdown: 5.3V
• Power (watts): 500W
• Polarization: 4 Channel Array - Unidirectional
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Polarity: Unidirectional
• Operating Voltage: 3 V
• Breakdown Voltage: 5.9 V
• Termination Style: SMD/SMT
• Peak Pulse Power Dissipation: 500 W
• Capacitance: 280 pF
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Dimensions: 3 mm W x 3.05 mm L x 1.45 mm H
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-7746-2; ESDA5V3SC5

Technical information
3
3.1
6/11
Technical information
ESD protection
The ESDA19SC6 is particularly optimized to perform ESD protection. ESD protection is
achieved by clamping the unwanted overvoltage. The clamping voltage is given by the
following formula :
As shown in
Figure 11. ESD clamping behavior (example)
To have a good approximation of the remaining voltages at both VI/O side, we provide the
typical dynamical resistance value Rd. By taking into account the following hypothesis :
we have:
The results of the calculation done for V
V
This confirms the very low remaining voltage across the device to be protected. It is also
important to note that in this approximation the parasitic inductance effect was not taken into
account. This could be a few tenths of volts during a few nanoseconds at the output side.
BR
= 19 V (typ.) and R
Figure
ESD Surge
Vg
11., the ESD strikes are clamped by the transient voltage suppressor.
d
= 0.80
Rg
(typ.) give:
R
V
V
g
output
CL
> R
V
ESDA19SC6
V
g
ouput
= V
Rd
BR
= 8 kV, R
d
=
and R
BR
V
= 38.4 V
BR
+ R
+
load
d
R
g
.
d
= 330
Voutput
> R
I
PP
------ -
R
V
d
g
g
(IEC61000-4-2 standard),
protected
Device
Rload
to be
ESDAxxSCx