21-204214-210 Amphenol, 21-204214-210 Datasheet - Page 72

• Manufacturer Part Number: 21-204214-210
• Description: Circular MIL / Spec Connectors PT Series MIL-DTL-26482 I
• Manufacturer: Amphenol
• Series: FPT Seriesr

Specifications of 21-204214-210

• Mil Type: MIL-DTL-26482
• Product Type: Connectors
• Shell Style: Receptacle
• Shell Size: 14
• Insert Arrangement: 14-21
• Mating Style: Threaded
• Mounting Style: Panel
• Shell Plating: Electroless Nickel
• Mounting Angle: Straight
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Filter Accessories
Amphenol Electrostatic Discharge (ESD)
Protected Connectors
Amphenol has developed cylindrical and rectangular connectors
which protect sensitive components from Electrostatic Discharge
(ESD) without diodes, varistors, gas tubes, or “experimental”
semiconductive materials.
These connectors utilize the Faraday Cage principal to shunt electro-
static discharge events to the conductive enclosure on which the con-
nector is mounted, thus never allowing the high voltage, high current
discharge event to reside on any contacts.
The ESD protected connectors have the same physical envelope as
their standard counterparts, and do not require special mounting or ter-
minating techniques. All of the contacts remain fully functional, and
electrical characteristics such as capacitance are not effected.
Product Features:
• Connector envelope identical to unprotected design for most applications
• Exceeds Protection Requirements of IEC 801-2 and MIL-STD-1686:
• Ensures that All Components within a Conductive Enclosure will be Sub-
• Voltage Observed on Contacts during ESD Events –
• Current Observed on Contacts during ESD Events –
• Response Time – Instantaneous
• Maximum ESD Voltage – Tested to ±26KV
• No Capacitive Loading
• Eliminates the Need for Discrete Components (such as diodes) and Max-
• Operating Voltage of Connectors not Effected for Most Designs
• Pulse Life – Infinite
What is Electrostatic Discharge (ESD)?
Electrostatic Discharge (ESD) is the rapid transfer of a static electric
charge from one body to another. A static electric charge consists of
either a surplus or depletion of electrons on a body, which gives that
body a potential or voltage relative to ground (or another body). The
discharge is extremely fast (less than 1 nanosecond risetime) and the
current flow may exceed 100 amps!
Static electricity is normally the result of two materials transferring
charges when rubbed or separated, such as shoes scuffing across a
dry carpet, or sheets of untreated plastic being separated. This phe-
nomena is commonly referred to as the triboelectric effect .
The voltage developed due to the triboelectric effect depends on the
materials involved, the quantity and type of contact, and relative humid-
ity. In a dry environment a person can accumulate a charge of up to 25
KV! In a moist environment a person’s potential is reduced due to the
effect of moisture on the insulating properties of materials.
For further information see:
Amphenol Product Data Sheet #171-1 Amphenol Electrostatis
Discharge (ESD) Protected Connectors.
Amphenol Publication L-2075, “ESD Attenuation Test Procedure
for Connectors with Faraday Cage Protective Structures”
* For further information on Amphenol LRM connectors with ESD
jected to a Maximum of 10V during Electrostatic Discharges between –
26 KV and +26 KV
<10V (at 1 megohm)
<100 milliamperes (at 2 ohms)
(Voltage and Current are Maximum Values)
imizes Printed Circuit Board Real Estate for Equipment Housed in Con-
ductive Enclosures which require ESD Protection as Free-standing Units
t
ti
lt A
h
l A
Sid
NY
70
What is a Faraday Cage?
A Faraday cage is a conductive enclosure. It may be
solid in form such as a sheet–metal enclosure, or it may
be full of apertures, such as a wire cloth box. When a
charge is placed on a faraday cage the electrons which
make up the charge, having like polarity, try to position
themselves as far as possible from each other. This
places the electrons on the outer surface of the enclo-
sure, leaving the inner surface uncharged. The charge on
the outer surface does not induce a charge on any neutral
object inside of the faraday cage, and therefore does not
try to transfer itself onto the internal object. Neutral
objects (such as IC’s) inside of a faraday cage are
thereby protected from ESD activity external to the fara-
day cage.
The voltage and current observed on neutral objects
within a faraday cage during ESD events are due to the
secondary effects of ESD. These include Electromagnetic
Interference (EMI), magnetic and electrical field coupling.
The faraday cage of the Amphenol ESD Protected Con-
nectors has been designed to minimize these effects.
The Amphenol
The Amphenol
day cage at the mating interface. The faraday cage has
been specifically designed to intercept electrostatic dis-
charges from the contacts in the unmated state, while
maintaining each contact’s isolation when the connector
is mated. When the ESD Protected Connectors have
been mounted to a conductive enclosure, a faraday cage
is created which will protect components located within
the enclosure from electrostatic discharges. This elimi-
nates the need for discrete components such as diodes
and gas discharge tubes, and saves printed circuit board
real estate. Amphenol ESD Protected Connectors have
also been applied to Line Replaceable Modules (LRM).*
Filter Cylindrical Connector (Actual Photo)
ESD Testing on MIL-DTL-38999, Series III
®
®
ESD Protected Connectors have a fara-
ESD Protected Connectors