T4-LDS-xxxx, Rev x (10-02-14)

©2013 Microsemi Corporation

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1N8149

– 1N8182

Available

Voidless-Hermetically-Sealed Unidirectional 150 W

Low-Capacitance Transient Voltage Suppressors

DESCRIPTION

This series of voidless-hermetically-sealed unidirectional low-capacitance Transient Voltage Suppressor

(TVS) designs are ideal for protecting higher frequency applications in high-reliability applications where

a failure cannot be tolerated. They include a unique rectifier diode in series and opposite direction from

the TVS to achieve a very low capacitance of 4 pF. This product series provides a working peak

“standoff” voltage selection from 6.8 to 170 volts with 150 watt ratings. They are very robust in hard-

glass construction and also use an internal metallurgical bond identified as Category 1 for high reliability

applications. These devices are also available in axial leaded packages for thru-hole mounting.

“A” Package

Also available in:

“A” MELF package

(surface mount)

1N8149US

– 1N8182US

Important: For the latest information, visit our website http://www.microsemi.com.

FEATURES



High surge current and peak pulse power unidirectional protection for sensitive circuits.



Very low capacitance for high frequency or high baud rate applications.



Bidirectional capability with two devices in anti-parallel (see Figure 5).



Triple-layer passivation.



Internal “Category 1” metallurgical bonds.



Voidless hermetically sealed glass package.



RoHS compliant versions are available.

APPLICATIONS / BENEFITS



High reliability transient protection.



Extremely robust construction.



Working p

eak “standoff” voltage (VWM) from 6.8 to 170 volts.



Available as 150 W peak pulse power (PPP) at 10/1000 µs.



Lowest available capacitance for 150 W rated TVS.



ESD and EFT protection per IEC61000-4-2 and IEC61000-4-4 respectively.



Secondary lightning protection per select levels in IEC61000-4-5.



Flexible axial-leaded mounting terminals.



Nonsensitive to ESD per MIL-STD-750 method 1020.



Inherently radiation hard as described in Microsemi MicroNote 050.

MAXIMUM RATINGS

MSC

– Lawrence

6 Lake Street,

Lawrence, MA 01841

Gort Road Business Park, Ennis, Co. Clare, Ireland

1-800-446-1158

(978) 620-2600

Fax: (978) 689-0803

Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298

MSC

– Ireland

Gort Road Business Park,

Ennis, Co. Clare, Ireland

Tel: +353 (0) 65 6840044

Fax: +353 (0) 65 6822298

Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298

Website:

www.microsemi.com

Parameters/Test Conditions

Symbol

Value

Unit

Junction and Storage Temperature

TJ and TSTG

-55 to +175

oC

Capacitance at zero volts

C

4

pF

Thermal Resistance junction to ambient

RθJA

150

oC/W

Peak Pulse Power at 25

oC (10µs/1000µs)

PPP

150

W

Impulse repetition rate (duty factor)

d.f

0.01

%

Steady State (Average) Power @ TA = 25

oC

PM(AV)

1.0

W

Solder Temperature (10 s maximum)

260

oC

Note: Steady-state power ratings with reference to ambient are for PC boards where thermal resistance from

mounting point to ambient is sufficiently controlled where TJ(MAX) is not exceeded.