USB50803C-A thru USB50824C-A, e3
Bidirectional Low Capacitance TVSarray ™
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
This Transient Voltage Suppressor (TVS) array is packaged in an SO-8 configuration
giving protection to 2 Bidirectional data or interface lines. It is designed for use in
applications where very low capacitance protection is required at the board level from
voltage transients caused by electrostatic discharge (ESD) as defined in IEC 61000-4-
2, electrical fast transients (EFT) per IEC 61000-4-4 and effects of secondary lightning.
It is also available with either Tin-Lead plated terminations or as RoHS Compliant with
annealed matte-Tin finish by adding an “e3” suffix to the part number*.
Using the schematic on the second page, pins 1 & 2 are tied together for the first
protected line, and pins 7 & 8 are tied together to ground. The same would occur for a
second protected line where pins 3 & 4 tied together and pins 5 & 6 tied together to the
ground. These may also be switched in polarity connections since the electrical
features are the same in each antiparallel (opposite facing) leg when the pins are tied
together in this manner for bidirectional protection. This device with an “A” suffix is
opposite in polarity for each pin-to-pin leg to the USB50803C series (see schematic).
This provides no functional difference for bidirectional TVS protection with the noted
pins tied together as described above.
SO–8
These TVS arrays have a peak power rating of 500 watts for an 8/20 μsec pulse.
This array is suitable for protection of sensitive circuitry consisting of TTL, CMOS
DRAM’s, SRAM’s, HCMOS, HSIC microprocessors, UNIVERSAL SERIAL BUS
(USB) and I/O transceivers. The USB508XXC product provides board level protection
from static electricity and other induced voltage surges that can damage or upset
sensitive circuitry.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
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Protects up to 2 bidirectional lines
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EIA-RS485 data rates:
5 Mbs
10 Base T Ethernet
Surge protection per IEC 61000-4-2, IEC 61000-4-4
Provides electrically isolated protection
UL 94V-0 Flamability Classification
RoHS Compliant devices available by adding “e3” suffix
ULTRA LOW CAPACITANCE 3 pF per line pair
ULTRA LOW LEAKAGE
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USB date rate: 900 Mbs
Tape & Reel per EIA Standard 481
13 inch reel; 2,500 pieces (OPTIONAL)
Carrier tubes; 95 pcs (STANDARD)
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MAXIMUM RATINGS
MECHANICAL AND PACKAGING
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Operating Temperature: -55°C to +150°C
Storage Temperature: -55°C to +150°C
Peak Pulse Power: 500 watts (8/20 µs, Figure 1)
Pulse Repetition Rate: < .01%
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Molded SO-8 Surface Mount
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Weight 0.066 grams (approximate)
Marking: Logo, device marking code*, date code
Pin #1 defined by dot on top of package
Solder Temperatures: 260°C for 10 s (maximum)
ELECTRICAL CHARACTERISTICS
BREAKDOWN
VOLTAGE
VBR
CLAMPING
VOLTAGE
VC
@ 1 Amp
(Figure 2)
VOLTS
CLAMPING
VOLTAGE
VC
@ 5 Amp
(Figure 2)
VOLTS
STANDBY
CURRENT
ID
CAPACITANCE
(f=1 MHz)
C
TEMPERATURE
COEFFICIENT
OF VBR
STANDOFF
VOLTAGE
VWM
DEVICE
MARKING*
PART
NUMBER
@1 mA
@ VWM
@0V
αVBR
VOLTS
VOLTS
MIN
4
µA
MAX
200
40
1
pF
MAX
3
mV/°C
MAX
-5
MAX
3.3
MAX
8
MAX
11
USB50803C-A
USB50805C-A
USB50812C-A
USB50815C-A
USB50824C-A
U3CA
U5CA
5.0
6.0
10.8
19
13
3
3
1
U12CA
U15CA
U24CA
12.0
15.0
24.0
13.3
16.7
26.7
26
8
24
32
1
3
3
11
43
57
1
28
*Device marking has an e3 suffix added for the RoHS Compliant option, e.g. U3CAe3, U5CAe3, U12CAe3, U15CAe3, and U24CAe3.
Copyright © 2006
Microsemi
Page 1
8-01-2006 REV 0
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503