« back to results for ""
Below is a cache of http://www.methode.com/mefe_mirror/CompactPCI.pdf. It's a snapshot of the page taken as our search engine crawled the Web.
The web site itself may have changed. You can check the current page or check for previous versions at the Internet Archive. Yahoo! is not affiliated with the authors of this page or responsible for its content.
Methode 2.0mm Modular Hard-Metric Connector System CompactPCI Connectors





CompactPCI Connector Product Specification

Specification No: PS98009 Rev. 2 Date: 5.1.2000
Page 1 of 10



Methode 2.0mm Modular Hard-Metric Connector System
CompactPCI Connectors
1 Introduction
Methodes 2.0mm Modular Metric Connector system is specifically designed in compliance with IEC
1076-4-101 for CompactPCI bus application. It uses shielded 2mm grid gas tight, high-density pin-and-
socket connectors with coding mechanism. The low inductance and controlled impedance makes it
ideal for PCI signaling while the large number of ground pins guarantee adequate shielding and
grounding for low ground bounce and reliable operation in noisy environments. Staggered make-break
pin populations are specified for optional hot swap capability. Methode also provides full custom
interconnect solution to meet the specific needs of its customers.
2 CompactPCI Connector System.
The CompactPCI connector system is used to interconnect CompactPCI daughter cards and
backplanes. The form factors used for the daughter cards and the backplanes are based upon the
Eurocard industry standard. 2 types of form factors are specified in the Eurocard industry standard.
They are the 3U form factor and 6U form factor.
2.1
3 U daughter card (Fig 1)
The 3U card is a 100mm X 160mm card with a thickness of 1.6mm. The connectors used in this
card are names J1 and J2.
J1 uses the Type A right angle female connector that is 5 rows X 22 positions with a provision
for coding made in the center (Fig 4).
J2 uses the Type B right angle female connector that
is 5 rows X 22 positions (Fig 5).
2.2
6U daughter card (Fig 1)
The 6U card is an extension to the 3U card with a
card dimension of 233.35mm X 160mm X 1.6mm.
The connectors used in this card are numbered J1 to
J5 from bottom up. J1 and J2 use similar connectors
as the 3U card. The 3 additional connectors can be
used for secondary buses (like SCSA or MVIP
telephony buses). They can also be used as a bridge
to other buses like VME, SCSI, ISA or other user I/O
in hybrid backplanes.
J3 typically uses Type B right angle female connector
(Fig 5) with 95 signal contacts extension.
J4 uses the Type A right angle female connector
similar to J1.
J5 uses the Type B right angle female connector similar to J2.
Other type of connectors could be used based on the specified application.
2.3
3 U Backplanes (Fig 2)
The 3U backplanes have up to 8 slots at a pitch of 20.32mm. The slots are designated 1 to 8
from left as viewed from the front. The connectors used in the backplanes are names P1 and
P2.
Fig 1. CompactPCI Daughter Card





CompactPCI Connector Product Specification

Specification No: PS98009 Rev. 2 Date: 5.1.2000
Page 2 of 10



P1 uses the Type A male connector that is 5 rows X 22 positions with a provision for coding
made in the center (Fig 3).
P2 uses the Type B male connector that is 5 rows X 22 positions (Fig 4).
2.4
6U Backplanes (Fig 3)
The 6U backplanes contain the same bus structure as the 3U backplane in the lower section.
The upper half of the backplane is intednded for user-specific bus and I/O signals. The
connectors used in the 6U backplanes are names P1 and P5. P1 and P2 use similar connectors
as the 3U backplanes.
P3 typically uses Type B male connector (Fig 5) with 95 signal contacts for VME 64 extension.
P4 uses the Type A male connector similar to P1.
P5 uses the Type B right angle female connector similar to P2.
Other type of connectors could be used based on the specified
application.
3 Type of Connectors
There are 3 basic types of connectors in the Methodes 2.0mm
Modular Metric Connector System. There Type A, Type B and Type
C. All the 3 types consist of a vertical male header and a right angle
female receptacle. All the connectors are designed for gas tight
press-fit installation
3.1
Type A Connectors (Fig 4)
Type A connector is a 50mm module with integral guide lugs for
polarized mating. It has a total of 110 signal contacts and 44
Fig 4. Type A Connectors
Fig 2. 3U Backplane
Fig 3. 6U Backplane





CompactPCI Connector Product Specification

Specification No: PS98009 Rev. 2 Date: 5.1.2000
Page 3 of 10



grounding shield contacts in 5+2 rows of 25 positions. 3 positions have been used to house
coding keys.
The Type A Headers are used in positions P1 and P4 of the backplanes.
Type A receptacles are used in positions J1 and J4 of the daughter cards.
3.2
Type B Connectors (Fig 5)
Under the CompactPCI specification, Type B connector is a 44mm
module with a total of 110 signal contacts and 44 grounding shield
contacts in 5+2 rows of 22 positions. No provision for polarized
mating and coding mechanism for Type B connectors.
There are 3 variations of Type B connectors. Besides the 22
position model, there are 25 position model and 19 position
model.
The 25 position model is a 50mm module with a total of 125 signal
contacts and 50 grounding shield contacts.
The 19 position model is a 38mm module with a total of 95 signal
contacts and 38 grounding contacts.
The Type B headers with 22 positions are used in positions P2
and P5 of the backplanes under the CompactPCI specification.
While its counterparts are used in positions J2 and J5 of the
daughter cards.
The 19 position headers are used in positions P3 of the backplanes under the CompactPCI
specification. While its counterpart are used in positions J3 of the daughter cards.
3.3
Type C Connectors (Fig 6)
Type C connector is a 25 mm module with a total of 55 signal
contacts and 22 grounding contacts in 5+2 of 11 positions. It comes
with guide lugs for polarized mating and is supplied with bottom
pegs for secure board mounting.
Type C connectors are used for end of stacked modules only.
4 Connector Specifications
4.1
Mechanical Characteristics
4.1.1 Material

Contact, Pin and Grounding Shield Material: Phosphor Bronze

Insulator Material: PBT 30% Glass Filled, UL 94V-0 Rated
4.1.2 Plating

0.00127 - 0.00381mm min. Nickel underplate all over

Mating Area: 0.000762mm min. gold plate

Press-fit Area : 0.00254 - 0.00508mm 90/10 tin/lead
Fig 5. Type B Connectors
Fig 6. Type C Connectors





CompactPCI Connector Product Specification

Specification No: PS98009 Rev. 2 Date: 5.1.2000
Page 4 of 10



4.1.3 Insertion Force: 0.75N max. per Contact
4.1.4 Withdrawal force: 0.15N min. per Contact


4.1.5 Durability: 500 cycles
4.1.6 Temperature Range: -55°C to +125°C
4.2
Electrical Characteristics
4.2.1 Current Rating: 1.0A @ 70°C per Contact
4.2.2 Voltage Rating: 500Vrms.
4.2.3 Dielectric Withstanding Voltage: 750Vac rms/minute
4.2.4 Insulation Resistance: 10
4
M min.
4.2.5 Contact Resistance: 20m max.
4.2.6 Impedance: 52.2 max.
4.2.7 Signal Skew row a to row e: 53.5ps max.
4.2.8 Reflection Factor (@50W, 100MHz): 0.019
4.2.9 Reflection Loss(@100MHz): 34.89dB max
5 Coding System
A coding mechanism is built into the CompactPCI interconnect system that uses coding key sets with
combinations of matching colors and complementary numbering. This coding mechanism is used in
Type A male and female connectors.
Coding keys are inserted from the mating faces of male and female housings. The keys are retained in
the housing by foot clips snap fit into housing slots. Key removal is allowed from the mating front
whenever required.
Two sets of the coding keys are identified to discriminate between 5.0V and 3.3V CompactPCI cards.
The CompactPCI Specification prescribes bright-blue coding for 5.0V systems and cadmium yellow
coding for 3.3V system. Additional colour key sets are available for other unique cards. Fig 7 shown
some of the coding keys.
6 EMI Shielding
EMI Shielding is mandatory as specified in the CompactPCI
specification. Shielding can be provided as grounding pins in rows z
and f on the header and shielding plates on the top and bottom of
the female connectors. However, the CompactPCI specification only
required grounding pins loaded on row f and top shield on the female
connectors. The shielding system helps to provide a low impedance
return path for ground between the daughter board and the
backplane. The lower shield option that is provided is not required for
CompactPCI boards and shall not be loaded if it protrudes into the
inter-board separation plane.

Fig 7. Coding Keys
Fig 8. E