MSV101A thru MSV101G
MSV201A thru MSV701A
BIDIRECTIONAL VARISTORS
SCOTTSDALE DIVISION
DESCRIPTION
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 V
C2
clamping are rated to U.L.497B
requirements. (See table).
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
WWW .
Microsemi
.C
OM
DO-201AA
FEATURES
•
Bidirectional low voltage clamping 1.5 V to 9.0 V
using 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
•
Moisture classification is Level 1 with no dry pack
required per IPC/JEDEC J-STD-020B
•
Negative temperature coefficient (see Figure 2)
•
•
•
•
•
•
APPLICATIONS / BENEFITS
Low voltage clamping protection well be low
conventional TVS components
Telephone equipment protection
Protects from switching transients
Protection from ESD and EFT per IEC 61000-4-2
and IEC61000-4-4
Secondary lightning protection
Clamping voltages also specified per U.L. 497B with
100 V/µs rise time
MAXIMUM RATINGS
•
•
•
•
•
•
Steady State Power: 1.0 Watt at 50
o
C.
Operating and Storage temperatures: -65
o
C to
+150
o
C.
Surge: 30 Amps, 8.4 ms @ 25
o
C.
Pulse: 1.0 ms @ 25
o
C for V
C1
clamping*.
t
clamping
(0 volts to
V
BR
min.): Less than 1x10
-8
seconds (theoretical)
Solder temperatures: 260
o
C for 10 s (maximum)
•
•
•
•
•
•
•
MECHANICAL AND PACKAGING
CASE: Void free molded thermosetting epoxy body
meeting UL94V-0
FINISH: Tin-lead plated copper readily solderable
per MIL-STD-750, method 2026
POLARITY: Not marked for Bidirectional
MARKING: Part Number
TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
WEIGHT: 1.5 gram (approx.)
See package dimensions on last page
MSV101A – 101G and
MSV201A – 701A
Copyright
2003
12-23-2003 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
MSV101A thru MSV101G
MSV201A thru MSV701A
BIDIRECTIONAL VARISTORS
SCOTTSDALE DIVISION
GRAPHS
WWW .
Microsemi
.C
OM
FIGURE 2
Temperature Coefficient (TC)
of Voltage vs. Current †
FIGURE 1
Typical Current vs. Voltage †
† NOTE:
In Figures 1 & 2, multiply applicable V
BR
voltage or
TC by 2 for MSV201, by 3 for MSV301, by 4 for MSV401, by 5
for MSV501, by 6 for MSV601, and by 7 for MSV701.
PACKAGE DIMENSIONS &
SCHEMATIC
MSV101A
MSV101A – 101G and
and
MSV201A – 701A
MSV201A – 701A
MSV201A – 701A
SCHEMATIC
Copyright
2003
12-23-2003 REV A
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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