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PDF UMAFxxxA Data sheet ( Hoja de datos )
| Número de pieza | UMAFxxxA | |
| Descripción | Transient Voltage Suppressor | |
| Fabricantes | Microsemi Corporation | |
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SCOTTSDALE DIVISION
UMAF5.0A thru UMAF170CA
ULTRAMITE™ SURFACE MOUNT 500 Watt
Transient Voltage Suppressor 5.0 to 170 V
ENVIRONMENTALLY LEAD-FREE
DESCRIPTION
PACKAGE
These 500 watt transient voltage suppressors offer power-handling capabilities only
found in larger packages. They are also environmentally Lead-Free both externally
and internally. 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
www.DataSheet4Uco.cnofmiguration 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
UltraMite
FEATURES
APPLICATIONS / BENEFITS
• 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 (approx 1 mm)
• Available on Tape and Reel
• Built-in stress relief with similar COE as PC boards
• Lead-Free construction externally and internally
• Optional Lead-Tin finish (UMA5.0A-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
• Protects sensitive components such as IC’s, CMOS,
Bipolar, BiCMOS, ECL, DTL, T 2L, 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: UMAF5.0 to UMAF100A or CA
Class 2: UMAF5.0 to UMAF51A or CA
Class 3: UMAF5.0 to UMAF24A or CA
Class 4: UMAF5.0 to UMAF12A or CA
§ Secondary lightning protection per IEC61000-4-5 with
12 Ohms source impedance:
Class 1: UMAF5.0 to UMAF30A or CA
Class 2: UMAF5.0 to UMAF16A or CA
§ Virtually zero inductive parasitics with minimal Ldi/dt
voltage overshoots for fast-rise-time transients
MAXIMUM RATINGS
• Peak Pulse Power dissipation at 25ºC: 500 watts at
10/1000 µs (also see Fig 1, 2, and 3)
• Impulse repetition rate (duty factor): 0.01%
• tclamping (0 volts to V(BR) min.): < 100 ps theoretical for
unidirectional and < 5 ns for bidirectional
• Operating and Storage temperature: -55ºC to +150ºC
• Thermal resistance: 50 ºC/W junction to lead, or
115ºC/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 TL = 25oC, or 1.08
watts at TA = 25ºC 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)
MECHANICAL AND PACKAGING
• FRP substrate material and epoxy under-fill package
meeting UL94V-0
• Terminals Tin plated (solderable per MIL-STD-750,
Method 2026)
• Body marked with part number without UMA prefix
(e.g. F05, F15A, F33A, F58, F150CA, etc.)
• Cathode designated with band (no band on
bidirectional)
• Weight: 0.020 grams (approx)
• 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
5-08-2003 REV 0
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet UMAFxxxA.PDF ] | |
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