Littelfuse SP725 Series Manual do Utilizador descarregar pdf (Página 3)

Speciﬁcations are subject to change without notice.

Revised: 04/24/13

TVS Diode Arrays (SPA

Diodes)

General Purpose ESD Protection - SP725 Series

ESD Capability

Table 1: ESD Test Conditions

Figure 3: High Current SCR Forward Voltage Drop Curve

ESD capability is dependent on the application and deﬁned

test standard.The evaluation results for various test

standards and methods based on Figure 1 are shown in

Table 1.

The SP725 has a Level 4 HBM capability when tested as a

device to the IEC 61000-4-2 standard. Level 4 speciﬁes a

required capability greater than 8kV for direct discharge and

greater than 15kV for air discharge.

For the “Modiﬁed” MIL-STD-3015.7 condition that is

deﬁned as an “incircuit” method of ESD testing, the V+

and V- pins have a return path to ground and the SP725

ESD capability is typically greater than 25kV from 100pF

through 1.5kΩ . By strict deﬁnition of MIL-STD-3015.7 using

“pinto-pin” device testing, the ESD voltage capability is

greater than 10kV.

For the SP725 EIAJ IC121 Machine Model (MM) standard,

the ESD capability is typically greater than 2kV from 200pF

with no series resistance.

Standard Type/Mode R

±V

IEC 61000-4-2

(Level 4)

HBM, Air Discharge 330 Ω 150pF 15kV

HBM, Direct Discharge 330 Ω 150pF 8kV

MIL-STD-3015.7

Modiﬁed HBM 1.5k Ω 100pF 25kV

Standard HBM 1.5k Ω 100pF 10kV

EIAJ IC121 Machine Model 0k Ω 200pF 2kV

H.V.

SUPPLY

± V

DUT

IEC 61000-4-2: R

50 to 100MΩ

CHARGE

SWITCH

DISCHARGE

SWITCH

MIL-STD-3015.7: R

1 to 10MΩ

Figure 2: Low Current SCR Forward Voltage Drop Curve

Figure 1: Electrostatic Discharge Test

600 800 1000 1200

FORWARD SCR VOLTAGE DROP (mV)

200

160

120

= 25ºC

SINGLE PULSE

FORWARD SCR CURRENT (mA)

FWD

FORWARD SCR VOLTAGE DROP (V)

FORWARD SCR CURRENT (A)

EQUIV. SAT. ON

THRESHOLD ~ 1.1V

= 25°C

SINGLE PULSE

1 2 3 4 5 6

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