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LC28A View Datasheet(PDF) - Microsemi Corporation

Part NameLC28A Microsemi
Microsemi Corporation Microsemi
Description1500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR


LC28A Datasheet PDF : 4 Pages
1 2 3 4
SCOTTSDALE DIVISION
LC6.5 thru LC170A
1500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
SCHEMATIC APPLICATIONS
The TVS low capacitance device configuration is shown in Figure 2. As a further option for unidirectional applications, an additional low
capacitance rectifier diode may be used in parallel in the same polarity direction as the TVS as shown in Figure 3. In applications where random
high voltage transients occur, this will prevent reverse transients from damaging the internal low capacitance rectifier diode and also provide a
low voltage conducting direction. The added rectifier diode should be of similar low capacitance and also have a higher reverse voltage rating
than the TVS clamping voltage VC. The Microsemi recommended rectifier part number is the “LCR80” for the application in Figure 5. If using two
(2) low capacitance TVS devices in anti-parallel for bidirectional applications, this added protective feature for both directions (including the
reverse of each rectifier diode) is also provided. The unidirectional and bidirectional configurations in Figure 3 and 4 will both result in twice the
capacitance of Figure 2.
FIGURE 2
TVS with internal Low
Capacitance Diode
FIGURE 3
Optional Unidirectional
configuration (TVS and
separate rectifier diode)
in parallel)
FIGURE 4
Optional Bidirectional
configuration (two TVS
devices in anti-parallel)
PACKAGE DIMENSIONS
DO-13 (or DO-202AA)
Copyright 2002
10-21-2004 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 4
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DESCRIPTION
This hermetically sealed Transient Voltage Suppressor (TVS) product family includes a rectifier diode element in series and opposite direction to achieve low capacitance performance below 100 pF (see Figure 2). The low level of TVS capacitance may be used for protecting higher frequency applications in inductive switching environments or electrical systems involving secondary lightning effects per IEC61000-4-5 as well as RTCA/DO-160D or ARINC 429 for airborne avionics.

FEATURES
• Unidirectional low-capacitance TVS series for flexible thru-hole mounting
• Suppresses transients up to 1500 watts @ 10/1000 µs
• Clamps transient in less than 100 pico seconds
• Working voltage (VWM) range 6.5 V to 170 V
• Hermetic sealed DO-13 metal package
• Options for screening in accordance with MIL-PRF-19500 for JAN, JANTX, JANTXV, and JANS are also available by adding MQ, MX, MV, MSP prefixes respectively to part numbers, e.g. MXLC6.5A, etc.
• Surface mount equivalent packages also available as SMCJLCE6.5 - SMCJLCE170A or SMCGLCE6.5 - SMCGLCE170A in separate data sheet (consult factory for other surface mount options)
• Plastic axial-leaded equivalents available in the LCE6.5 - LCE170A series in separate data sheet

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