ESDAxxSCx

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3. ESD PROTECTION BY ESDAxxSCx

Electrostatic discharge (ESD) is a major cause of failure in electronic systems.

Transient Voltage Suppressors (TVS) are an ideal choice for ESD protection. They are capable of

clamping the incoming transient overvoltage to a low enough level such that damage to the protected

semiconductor is prevented.

Surface mount TVS arrays offer the best choice for minimal lead inductance.

They serve as parallel protection elements, connected between the signal line and ground. As the

transient rises above the operating voltage of the device, the TVS array becomes a low impedance path

diverting the transient current to ground.

Figure 6: Clamping voltage versus peak pulse

Figure 7: Capacitance versus reverse applied

voltage (typical values)

Figure 8: Relative variation of leakage current

versus junction temperature (typical values)

Figure 9: Peak forward voltage drop versus

peak forward current (typical values)

0

5

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

0.1

1.0

10.0

50.0

tp=2.5µs

ESDA5V3SC5/SC6

ESDA6V1SC5/SC6

ESDA14V2SC5/SC6

ESDA25SC6

ESDA17SC6

ESDA19SC6

V

(V)

CL

I

(A)

PP

12

5

10

20

50

10

100

500

ESDA6V1SC5/SC6

ESDA14V2SC5/SC6

ESDA5V3SC5/SC6

ESDA25SC6

ESDA19SC6

ESDA17SC6

V (V)

R

C(pF)

F=1MHz

V

=30mV

OSC

RMS

25

50

75

100

125

1

10

100

500

ESDA14V2SC5/SC6

&

ESDA6V1SC5/SC6

ESDA5V3SC5/SC6

ESDA25SC6

ESDA17SC6

&

ESDA19SC6

T (°C)

j

I [T ] / I [T =25°C]

Rj

Rj

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0.01

0.10

1.00

5.00

ESDA25SC6

ESDA17SC6

ESDA5V3SC5/SC6

ESDA14V2SC5/SC6

&

ESDA6V1SC5/SC6

ESDA19SC6

I

(A)

FM

V

(V)

FM

T = 25°C

j