MSV101A thru MSV101G, e3
MSV201A thru MSV701A, e3
BIDIRECTIONAL VARISTORS
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
The MSV series consists of a matched set of silicon p-n junctions
configured for bidirectional application. They can be used in telephone
equipment, replacing copper-oxide varistors, fractional voltage regulators,
negative-temperature-coefficient resistors, signal limiters and expanders.
They are ideally suited for meter/galvanometer protection, wave shaping,
threshold limiters and zener diode compensation.
The MSV varistor uses two or more forward biased matched silicon diodes
in anti-parallel legs in a two-electrode device configuration. It provides a
voltage-dependent nonlinear resistance that drops markedly as the applied
voltage is increased similar to a TVS except it offers lower voltage features.
MSV devices are designed for controlled protection at various current
levels and are rated at various peak pulse currents.
These varistors are supplied in Microsemi’s cost-effective, highly reliable,
molded axial-leaded package. Non-standard voltages are also available.
Devices in this series with VC2 clamping are rated to U.L.497B
DO-201AA
requirements. (See table).
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
• Bidirectional low voltage clamping 1.5 V to 9.0 V using
•
Low voltage clamping protection well be low
conventional TVS components
forward biased diodes in series and antiparallel
• Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers
•
•
•
Telephone equipment protection
Protects from switching transients
Protection from ESD and EFT per IEC 61000-4-2
and IEC61000-4-4
• Moisture classification is Level 1 with no dry pack
•
•
Secondary lightning protection
required per IPC/JEDEC J-STD-020B
Clamping voltages also specified per U.L. 497B with
100 V/µs rise time
• RoHS Compliant devices available by adding e3 suffix
• Negative temperature coefficient (see Figure 2)
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
•
Steady State Power: 1.0 Watt at 50oC.
•
•
CASE: Void free molded thermosetting epoxy body
meeting UL94V-0
Operating and Storage temperatures: -65oC to
+150oC.
TERMINALS: Tin-lead or RoHS Compliant
annealed matte-Tin plating over copper readily
solderable per MIL-STD-750, method 2026
•
•
•
Surge: 30 Amps, 8.4 ms @ 25oC.
Pulse: 1.0 ms @ 25oC for VC1 clamping*.
•
•
•
POLARITY: Not marked for Bidirectional
MARKING: Part Number
t
clamping (0 volts to VBR min.): Less than 1x10-8
seconds (theoretical)
Solder temperatures: 260oC for 10 s (maximum)
TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
•
•
•
WEIGHT: 1.5 gram (approx.)
See package dimensions on last page
Copyright © 2006
4-14-2006 REV B
Microsemi
Page 1
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503