123

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Varistor Products

2

High Energy Industrial Square Disc

NA Varistor Series

Continuous:

Steady State Applied Voltage:

AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 to 750

V

DC Voltage Range (VM(DC)). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330 to 970

V

Transient:

Peak Pulse Current (ITM)

For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40,000

A

Single Pulse Energy Range

For 2ms Current Square Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 to1050

J

Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85

O

C

Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125

O

C

Temperature Coefficient (αV) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

Device Ratings and Specifications

NA SERIES

UNITS

MODEL

NUMBER

SIZE

CONTINUOUS

TRANSIENT

VARISTOR VOLTAGE

AT 1mA DC TEST

CURRENT

MAXIMUM

CLAMPING

VOLTAGE

(8/20µs)

TYPICAL

CAPACI-

TANCE

ENERGY

(2ms)

PEAK

CURRENT

(8/20µs)

MIN

MAX

f = 1MHz

(mm)

(V)

(V)

(J)

(A)

(V)

(V)

(V)

(V)

(pF)

V131NA34

V141NA34

34

34

130

140

175

188

270

291

40,000

184

198

220

200

228

248

345

375

10,000

V151NA34

34

150

200

300

40,000

212

240

268

405

8,000

9,000

V251NA34

34

250

330

370

40,000

354

390

429

650

5,000

V271NA34

34

275

369

400

40,000

389

430

473

730

4,500

V321NA34

34

320

420

460

40,000

462

510

561

830

3,800

V421NA34

34

420

560

600

40,000

610

680

748

1,130

3,000

V481NA34

34

480

640

650

40,000

670

750

825

1,240

2,700

V511NA34

34

510

675

700

40,000

735

820

910

1,350

2,500

V571NA34

34

575

730

770

40,000

805

910

1000

1,480

2,200

V661NA34

34

660

850

900

40,000

940

1050

1160

1,720

2,000

V751NA34

34

750

970

1050

40,000

1080

1200

1320

2,000

1,800

NOTE: Average power dissipation of transients not to exceed 2.0W.

1

40,000

3

2

1. Peak current applies to applications rated up to 115V

. Peak current is 30kA for applications greater than 115V

.

2. Peak current applies to applications rated up to 132V

. Peak current is 30kA for applications greater than 132V

.

3. Peak current applies to applications rated up to 123V

. Peak current is 30kA for applications greater than 123V

.

RMS

RMS

RMS

RMS

RMS

RMS