UMA5.0A Datasheet, PDF (1/4 Pages) Microsemi Corporation – ULTRAMITE SURFACE MOUNT 500 Watt Transient Voltage Suppressor 5.0 to 170 V

SCOTTSDALE DIVISION
UMA5.0A thru UMA170CA
ULTRAMITE™ SURFACE MOUNT 500 Watt
Transient Voltage Suppressor 5.0 to 170 V
DESCRIPTION
These 500 watt transient voltage suppressors offer capabilities only found in larger
packages. They are used for protecting against a variety of transients from inductive
switching environments or lower levels of induced secondary lightning effects of
IEC61000-4-5. It offers the same size footprint as the popular DO-214AC or
BA package outlines except with a much lower profile height. Its robust
configuration in a “2010” style MELF package prevents damage to extended-
lead terminals and virtually eliminates inductive parasitics from fast rise-time
transients with very short internal/external conduction paths. They are also very
effective in protection from ESD or EFT per IEC61000-4-2 and IEC61000-4-4.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PACKAGE
UltraMite™
FEATURES
• Available as a unidirectional or bidirectional device
(bidirectional with CA suffix)
• Fast response time
• Suppresses transients up to 500 W @ 10/1000 µs
(see Figure 1, 2, and 3).
• Robust 2010 MELF style flat package configuration
for accurate pick-and-place handling
• Fits same small narrow PCB pad layouts as “SMAJ”
packages in JEDEC DO-214AC (or BA)
• Very low height profile (approximately 1 mm)
• Available on Tape and Reel
• Built-in stress relief with similar COE as PC boards
• Optional Lead-Free design/finish (UMAF5.0A-170CA)
• 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.
APPLICATIONS / BENEFITS
• Protects sensitive components such as IC’s, CMOS,
Bipolar, BiCMOS, ECL, DTL, T²L, etc.
• Protection from switching transients & induced RF
• Compliant to IEC61000-4-2 and IEC61000-4-4 for
ESD and EFT protection respectively
• Secondary lightning protection per IEC61000-4-5
with 42 Ohms source impedance:
Class 1: UMA5.0 to UMA100A or CA
Class 2: UMA5.0 to UMA51A or CA
Class 3: UMA5.0 to UMA24A or CA
Class 4: UMA5.0 to UMA12A or CA
Secondary lightning protection per IEC61000-4-5
with 12 Ohms source impedance:
Class 1: UMA5.0 to UMA30A or CA
Class 2: UMA5.0 to UMA16A or CA
• Virtually zero inductive parasitics with minimal Ldi/dt
voltage overshoots for fast-rise-time transients
MAXIMUM RATINGS
• Peak Pulse Power dissipation at 25^ºC: 500 watts at
10/1000 µs (also see Fig 1, 2, and 3)
• Impulse repetition rate (duty factor): 0.01%
• t_clamping (0 volts to V_(BR) min.): < 100 ps theoretical for
unidirectional and < 5 ns for bidirectional
• Operating and Storage temperature: -55^ºC to +150^ºC
• Thermal resistance: 50 ^ºC/W junction to lead, or
115^ºC/W junction to ambient when mounted on FR4
PC board (1oz Cu) with recommended 5 mm² pads
(see last page)
• Steady-State Power: 2.5 watts at T_L = 25^oC, or 1.08
watts at T_A = 25^ºC when mounted on FR4 PC board
with recommended 5 mm² footprint pads
• Forward Surge Current at 25ºC: 40 amps peak, 8.3
ms half-sine wave. Maximum voltage of 3.50 V
(unidirectional only)
• Solder temperatures: 260 ^ºC for 10 s (maximum)
MECHANICAL AND PACKAGING
• FRP substrate material and epoxy under-fill package
meeting UL94V-0
• Terminals solder plated (solderable per MIL-STD-
750, Method 2026)
• Body marked with part number without UMA prefix
(ie. 05, 15A, 33A, 58, 150CA, etc.)
• Cathode designated with band (no band on
bidirectional)
• Weight: 0.020 grams (approximate)
• Tape & Reel packaging per EIA-481-2 with 12 mm
tape and 3000 units/reel (7 inch) or 10,000 units/reel
(13 inch)
• See package dimensions on last page
Copyright  2002
MSCUMA5.0.PDF 10-16-2003 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, [phone], Fax: [phone]
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