SP720ABG【PDF 3/6 页】TVS ARRAY ESD 14 INPUT 16-SOIC

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TVS Diode Arrays (SPA ? Diodes)

General Purpose ESD Protection - SP720 Series

ESD Capability

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

Figure 1: Electrostatic Discharge Test

Table 1.

R 1

R D

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

defined as an “in-circuit” method of ESD testing, the V+

and V- pins have a return path to ground and the SP720

ESD capability is typically greater than 15kV from 100pF

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

CHARGE

SWITCH

H.V.

SUPPLY

V D

C D

DISCHARGE

SWITCH

IN

DUT

“pin-to-pin” device testing, the ESD voltage capability

is greater than 6kV. The MIL-STD-3015.7 results were

determined from AT&T ESD Test Lab measurements.

The HBM capability to the IEC 61000-4-2 standard is

greater than 15kV for air discharge (Level 4) and greater

IEC 1000-4-2: R 1 50 to 100M

MIL STD 3015.7: R 1 1 to 10M

FIGURE 1. ELECTR OSTATIC DISCHARGE TEST

Table 1: ESD Test Conditions

than 4kV for direct discharge (Level 2). Dual pin capability (2

adjacent pins in parallel) is well in excess of 8kV (Level 4).

For ESD testing of the SP720 to EIAJ IC121 Machine

Model (MM) standard, the results are typically better than

1kV from 200pF with no series resistance.

Standard

MIL STD 3015.7

IEC 61000-4-2

EIAJ IC121

Type/Mode

Modified HBM

Standard HBM

HBM, Air Discharge

HBM, Direct Discharge

HBM, Direct Discharge,

Two Parallel Input Pins

Machine Model

R D

1.5kΩ

1.5kΩ

330Ω

330Ω

330Ω

0kΩ

C D

100pF

100pF

150pF

150pF

150pF

200pF

±V D

15kV

6kV

15kV

4kV

8kV

1kV

Figure 2: Low Current SCR Forward Voltage Drop Curve

Figure 3: High Current SCR Forward Voltage Drop Curve

100

T A = 25°C

2.5

T A = 25°C

80

60

SINGLE PULSE

2

1.5

SINGLE PULSE

40

1

I FWD

20

0

0.5

0

EQUIV. SAT. ON

THRESHOLD ~ 1.1V

V FWD

600

800

1000

1200

0

1

2

3

FORWARD SCR VOLTAGE DROP (mV)

? 2013 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 04/24/13

FORWARD SCR VOLTAGE DROP (V)

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