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VHDM-HSD™ FAQs
Electrical
Mechanical
Electrical
What is the current rating
of the signal pins?
1 amp
What is the current rating
of the shields?
2 amps
What is the current rating
of the power blade?
10 amps per blade, derated ; 4 amps/80 volts per blade, hot
swap
What is the contact resistance
between the compliant pin and the plated-through hole?
1 milliohm, maximum
Mechanical
What is the per-pin insertion/mating
force?
40 grams per signal and 40 grams per each beam on the backplane
shield.
What is the normal force per
contact beam?
50 grams minimum per beam, end of life
How much wipe under load do I get
with high-speed?
1.05mm minimum with 4.25mm signal; 3mm minimum with 6.25mm
shield; 2.5mm minimum with advanced mate shield (VHDM-HSD
5-Row)
How long can my daughtercard connector
assembly be before I need to split it and use a joiner module?
Up to 304mm (12 inches) long.
Do I have to use end caps or guide
pins in my configuration?
End caps must be used in a connector pattern that does not
have power or guide modules at the ends. This is done in order
to cover up the exposed metal on the wafer. Guide pins are
strongly recommended at both ends, with a design guideline
of one guide module minimum for assemblies under 150mm (six
inches) long, and two guide modules for assemblies 150mm and
longer.
The daughtercard connector is
press-fit. Do I still need screws through my daughtercard?
Yes, for joiners and guide modules.
The connector does not look
symmetrical. Do I need special right-hand and left-hand polarizing/guidance
modules on the backplane?
Yes. There are right-hand and left-hand polarizing/guidance
modules for the 5-row and 8-row 10- and 25-column backplane
shrouds.
What is the minimum card-slot pitch
for the VHDM-HSD connector?
8-Row is 22mm
6-Row is 18mm
5-Row is 15mm
What are the minimum and
maximum printed circuit board thicknesses required for Amphenol's
VHDM connectors?
0.070" (1,78mm) minimum. There really is no stated maximum
since the board fabricator is restricted by the manufacturing
aspect ratio for the daughtercard & backplane.
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