Series 0805 Surface Mount Suppressor PulseGuard Suppressors help
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Polymeric Suppressors
Series 0805 Surface Mount Suppressor
PulseGuard Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD). They supplement on-chip protection integrated circuitry best suited lowvoltage, high-speed applications where capacitance important. Data ports utilizing such high-speed protocols 2.0, IEEE1394 InfiniBandSM benefit from this technology. PulseGuard suppressors polymer composite materials suppress fast-rising transients specified 61000-4-2 MIL-STD-883E).
Features
Ultra-low capacitance leakage current Fast response time 4-lines protection Bi-directional Withstands multiple strikes Based industry standard 2012 package Compatible with pick-and-place processes Available 1,000 5,000 piece reels (EIA-RS481)
Typical Applications
Servers Laptop/Desktop Computers Network Hardware Computer Peripherals Digital Cameras External Storage
Physical Specifications
Materials:
Body: Glass Epoxy Terminations: Tin-Lead
Soldering Parameters:
Wave solder 260°C, seconds maximum Reflow solder 260°C, seconds maximum
Electrical Characteristics
Trigger Voltage 1,000 typical Clamping Voltage1 150V, typical Rated Voltage 24VDC, Capacitance2 0.055 Response Time1 Leakage Current Pulse Withstand1 1,000 pulses, minimum NOTES: direct discharge method, 61000-4-2. Measured MHz. Measured VDC. Testing fast pulse rates (1-20Hz) cause change leakage current performance (6µA, max).
Operating Temperature Range:
-65°C 125°C
Ordering Information
CATALOG NUMBER PGB0040805MR PGB0040805NR PIECES REEL 1,000 5,000
Design Consideration
Because fast rise-time transient, placement PulseGuard suppressors design consideration. achieve optimal suppression, devices should placed circuit board close source transient possible. Install PulseGuard suppressors directly behind connector that they first board-level circuit component encountered transient. They connected from signal/data line ground.
Polymeric Suppressors
Series 0805 Surface Mount Suppressor
Generalized PulseGuard Suppressor Response
(Positive Negative Polarity Pulses)
Trigger Voltage Voltage
Generalized Curve
(Positive Negative Polarity Pulses)
Trigger Voltage Current
Clamping Voltage
Clamping Voltage Voltage
Time (ns)
Definitions
Trigger Voltage: measured peak voltage across suppressor before transitions from high resistance. manifested "spike" before clamping voltage achieved. This voltage typically well below damage threshold on-chip protection. Clamping Voltage: voltage level which impulse voltage reduced. This voltage that suppressor holds until transient energy dissipated. Impulse Voltage: Also known Threat Voltage. This voltage that "zapped" into circuit. Voltages generated people exceed 61000-4-2 defines four levels impulse voltage testing purposes: DIRECT DISCHARGE DESCRIPTION Cover tape thickness Drive hole diameter Drive hole spacing MEASUREMENT (MM) 0.06 1.50 4.00 0.58 2.21 4.00 1.45 0.65 8.00
Capacitance Frequency
Note: 1,000
Capacitance (fF)
Frequency (GHz)
SEVERITY LEVEL
DISCHARGE
Carrier Tape Specifications
Parts delivered (178mm) reel, paper carrier tape
Pocket depth Pocket height Pocket spacing
Pocket width Carrier tape thickness
Carrier tape width
PULSEGUARD® SUPPRESSORS
Polymeric Suppressors
Series 0805 Surface Mount Suppressor
Test Set-up 61000-4-2 Waveform, 2kV-15kV
Device under test P6156 Probe (Voltage measurement) KeyTek pulser 2,000- 15,000 Brown (x100)
Faraday cage
Ground return
Tektronic 684B
Blue (x10) shunt (10-5 ohms parallel) P6156 Probe (Current measurement)
Reference Schematics:
Recommended Layout: Device Dimensions:
0.44 (0.037") 1.27 (0.050")
Equivalent Circuit:
2.03 (0.080")
Dimension 0.456 (.016") Dimension 0.660 (.026")
SOLDER METHOD Wave Solder Reflow Solder INCH 0.029 0.029 0.74 0.74 INCH 0.029 0.029
0.74 0.74 INCH 0.028 0.028
0.71 0.71 INCH 0.050 0.050
1.27 1.27 INCH 0.025 0.025
0.635 0.635 INCH
0.51 0.51 INCH 0.011 0.011
0.279 0.279
0.020 0.020
Note: Pins (Common) typically connected chassis ground. However since PulseGuard suppressors electrically bi-directional, system voltage also used "dump".
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