UMA51A Просмотр технического описания (PDF) - Microsemi Corporation

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UMA51A

ULTRAMITE™ SURFACE MOUNT 500 Watt Transient Voltage Suppressor 5.0 to 170 V

Microsemi Corporation 

SCOTTSDALE DIVISION

UMA5.0A thru UMA170CA

ULTRAMITE™ SURFACE MOUNT 500 Watt

Transient Voltage Suppressor 5.0 to 170 V

Symbol

VWM

PPP

V(BR)

ID

SYMBOLS & DEFINITIONS

Definition

Working Peak (Standoff) Voltage

Peak Pulse Power

Breakdown Voltage

Standby Current

Symbol

IPP

VC

I(BR)

Definition

Peak Pulse Current

Clamping Voltage

Breakdown Current for V(BR)

GRAPHS

tw Microseconds

Figure 1 – Peak Pulse Power (PPP) – Kilowatts versus

Pulse Width (tW) - Microseconds

Test wave form

parameterxs

tr = 10µsec.

tp = 1000µsec.

FIGURE 2

Pulse Waveform for Exponential Surge

Lead Temperature oC

FIGURE 3

Derating Curve

V(BR) - Breakdown Voltage – Volts

FIGURE 4

Typical Capacitance vs. Breakdown Voltage

Copyright  2002

MSCUMA5.0.PDF 10-16-2003 REV B

Microsemi

Scottsdale Division

8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

Page 3

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