05090
Only One Name Means ProTek’Tion™
PMMAD1108
ultRA low cAPAcitAnce Multi-line steeRing DioDe ARRAy
DescRiPtion
The PMMAD1108 is a low distortion steering diode. This device is intended for use in high frequency analog or
digital data I/O ports for protection against Electrostatic Discharge (ESD) and Electrical Fast Transients (EFT). The
PMMAD1108 is connected between rail-to-rail voltage bus or rail-to-ground for clamping and diverting overvoltage
transients for the protection of sensitive network interface circuits.
This device provides low capacitance, which insures signal integrity up to 900MHz, while complete isolation between
adjacent diodes keeps cross-talk to a minimum. The PMMAD1108 is available in a SO-16 package and meets the IEC
61000-4-2, IEC 61000-4-4 and IEC 61000-4-5 requirements.
so-16 PAckAge
FeAtuRes
• Compatible with IEC 61000-4-2 (ESD): Air - 15kV, Contact - 8kV
• Compatible with IEC 61000-4-4 (EFT): 40A - 5/50ns
• Compatible with IEC 61000-4-5 (Surge): 24A, 8/20µs - Level 2(Line-
Gnd) & Level 3(Line-Line)
• 500 Milliwatt Continuous Power Dissipation
• Monolithic Design
• ESD Protection > 25 kilovolts
• Protects up to 8 I/O Lines
• Working Voltage > 50 Volts
• Low Leakage Current < 0.1µA
• Low Insertion Loss & Cross-Talk
• Ultra Low Capacitance: 5pF per Diode
• RoHS Compliant
• REACH Compliant
APPlicAtions
•
•
•
•
High Frequency Data Lines
RS-232 & RS-422 Interface Networks
Ethernet 10/100 Base T
Computer I/O Ports
MechAnicAl chARActeRistics
•
•
•
•
Molded JEDEC SO-16 Package
Approximate Weight: 0.15 grams
Lead-Free Pure-Tin Plating (Annealed)
Solder Reflow Temperature:
Pure-Tin - Sn, 100: 260-270°C
• 16mm Tape and Reel Per EIA Standard 481
• Flammability Rating UL 94V-0
ciRcuit DiAgRAM & Pin conFiguRAtion
+
1
2
3
4
5
6
7
8
I/O PORT
16 15 14 13
12 11
10
9
GND OR (-)
8 isolAteD DioDe ARRAy
8 lines oF PRotection
05090.R8 1/11
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