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Rev 3  

 

of 7 

F.

 

Cleaning 

After soldering, removal of fluxes, residues, and activators is necessary. Consult with the supplier of 
the solder and flux for recommended cleaning solvents. Cleaners must be free of dissolved flux and 
other contaminants. It is recommended cleaning the pc board on its edge. If using aqueous cleaner, 
standard equipment such as a soak-tank or an automatic in-line machine should be used. Common 
cleaning solvents that will not affect this connector are listed in Figure 3. 

DANGER 

Consideration must be given to toxicity and other safety requirements recommended by the solvent manufacturer. 
Refer to the manufacturer's material safety data sheet (MSDS) for characteristics and handling of cleaners. 
Trichloroethylene and methylene chloride is not recommended because of harmful occupational and environmental 
effects.  

CLEANER 

TIME (Minutes) 

TEMPERATURE (Max) 

NAME 

TYPE 

ALPHA 2110 

Aqueous 

132°C [270°F] 

BIOACT EC-7 

Solvent 

100°C [212°F] 

Butyl CARBITOL 

Solvent 

Ambient Room 

Isopropyl Alcohol 

Solvent 

100°C [212°F] 

KESTER 5778 

Aqueous 

KESTER 5779 

Aqueous 

LONCOTERGE 520 

Aqueous 

LONCOTERGE 530 

Aqueous 

Terpene 

Solvent 

Figure 3 

NOTE 

If a cleaning solvent is not listed, call the number at the bottom of page 1 for advice. 

G.

 

Drying 

When drying cleaned assemblies and pc boards, temperature limitations must not be exceeded: 
85°C [185°F]. Excessive temperatures may cause connector housing degradation. 

3.8.

 

Connector Placement 

CAUTION 

Connectors should be handled only by the housing to avoid deformation, contamination, or damage to the contact 
solder tines. 

Each contact solder tine must be seated on its pc board circuit pad. Optimally, the tines should be 
centered on the pc board circuit pads; however, slight misalignment is permissible. 

Because the connector alignment posts are for clearance and fit only, the force required to seat the 
connector is minimal. The alignment posts and must be inserted into the pc board holes.  

3.9.

 

Checking Installed Connector 

All solder joints must conform to the requirements specified in Workmanship Specification 

101-21

 and all 

other requirements specified in this document. The solder fillets must be evenly formed around each 
contact solder tine. Solder must have 95% minimum coverage over the circuit pad. 

3.10.

 

Removal and Repair 

Standard de-soldering methods must be used to remove the connector from the pc board. The connector 
must not be re-used after removal. The connector is not repairable. Defective or damaged product must 
not be used. 

 

ALPHA, BIOACT, CARBITOL, KESTER, and LONCOTERGE are trademarks of their respective owners. 

Содержание QSFP-DD

Страница 1: ...ccepts 1 00 0 10 thick integrated circuit card housed in a plug body with alignment posts for stability of placement and needle eye pins to secure the connector on the pc board The connector is mounte...

Страница 2: ...operate in a temperature range of 55 to 85 C 67 to 185 F 3 3 Material The housing is made of liquid crystal polymer LCP thermoplastic UL 94 V 0 The contacts are made of copper alloy underplated with n...

Страница 3: ...he pc board circuit pads must be 0 03 C Circuit Pads The circuit pads must be solderable in accordance with EIA 364 52 D Layout All holes and circuit pads must be precisely located on the pc board The...

Страница 4: ...designation shall be 200 to 325 74 to 44 square micron openings respectively 6 Minimum viscosity of screen print shall be 5 10 cp centipoise 7 Minimum viscosity of stencil print shall be 7 5 10 cp ce...

Страница 5: ...Rev 3 5 of 7 CAUTION Excessive temperatures may cause connector housing degradation or plating deterioration Figure 3...

Страница 6: ...l the number at the bottom of page 1 for advice G Drying When drying cleaned assemblies and pc boards temperature limitations must not be exceeded 85 C 185 F Excessive temperatures may cause connector...

Страница 7: ...customer drawing to ensure reliable placement 6 VISUAL AID Figure 6 Visual Aid The illustration above shows a typical application of 152 position Stacked QSFP_DD pc board connector This illustration s...

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