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HomeProductsConnectors, InterconnectsD-Sub Connector Assemblies638-078-630-041
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638-078-630-041 - EDAC Inc.

Manufacturer Part Number
638-078-630-041
Manufacturer
EDAC Inc.
Allelco Part Number
98D-638-078-630-041
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
29,060 pcs available, New & Original
Parts Description
CONN D-SUB RCPT 78POS VERT T/H
Package
Data sheet
638-078-630-041.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 29060
  • Unit Price: $11.417
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $11.417 $11.42
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

638-078-630-041 Tech Specifications
EDAC Inc. - 638-078-630-041 technical specifications, attributes, parameters and parts with similar specifications to EDAC Inc. - 638-078-630-041

Product Attribute Attribute Value
Manufacturer EDAC Inc.
Wire Gauge -
Voltage Rating -
Termination Solder
Shell Size, Connector Layout 5 (DD, D) High Density
Shell Material, Finish Steel, Nickel Plated
Series 638
Package -
Operating Temperature -55°C ~ 85°C
Number of Rows 4
Number of Positions 78
Mounting Type Through Hole
Material Flammability Rating UL94 V-0
Ingress Protection -
Product Attribute Attribute Value
Flange Feature Housing/Shell (Unthreaded)
Features Shielded
Dielectric Material Polyester Thermoplastic
Current Rating (Amps) 3A per Contact
Contact Type Signal
Contact Material Copper Alloy
Contact Form -
Contact Finish Thickness 30.0µin (0.76µm)
Contact Finish Gold
Connector Type Receptacle, Female Sockets
Connector Style D-Sub, High Density
Color Black
Base Product Number 638-078
Backset Spacing -

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.69.4040

Frequently Asked Questions(FAQ)

What are the mechanical advantages of the Mercury 638-078-630-041 78-position D-Sub receptacle in high-density applications?
The Mercury 638-078-630-041 achieves high-density contact arrangement through its 78-position female socket configuration in a compact D-Sub form factor. The vertical through-hole mounting design allows direct PCB integration without requiring additional daughterboards or flex cables, reducing assembly complexity and mechanical stack-up in space-constrained enclosures. The D-Sub geometry provides inherent strain relief and polarization, preventing mating errors during field service and reducing connector-related failures in vibration-prone environments like industrial or aerospace applications.
How does the 638-078-630-041 contact density compare to standard 50-position D-Sub connectors in legacy system retrofits?
The Mercury 638-078-630-041 provides 56% more contact positions (78 vs. 50) within the same D-Sub shell envelope, enabling retrofit of expanded signal paths without mechanical redesign of mounting hardware or cable routing. This density increase allows engineers to consolidate multiple 50-position connectors into a single 638-078-630-041 interface, reducing connector count, improving reliability through fewer mating cycles, and simplifying board layout. For systems transitioning from parallel parallel-port or legacy multi-drop architectures, this consolidation typically reduces assembly labor and maintenance touchpoints.
What plating specifications should be verified for the Mercury 638-078-630-041 in high-reliability applications requiring corrosion resistance?
The 638-078-630-041 female socket contacts require specification verification for gold or nickel plating thickness and base metal composition, as contact wear and corrosion pathways directly impact insertion-loss stability and signal integrity in analog and RF signal distribution. For marine, automotive, or harsh industrial environments, confirm that the 638-078-630-041 meets MIL-DTL-24308 contact plating requirements (typically minimum 50 µin gold flash over nickel strike). Specifications should include salt-fog test compliance and contact resistance limits (typically <50 mΩ initial, <100 mΩ after environmental cycling) to validate long-term performance in the target deployment environment.
How does vertical through-hole mounting of the 638-078-630-041 affect PCB layout and thermal management in densely populated boards?
The vertical through-hole design of the Mercury 638-078-630-041 orients the connector perpendicular to the PCB surface, requiring reserved clearance above the board for mating cable assemblies. This vertical footprint can occupy significant Z-axis space in compact form factors, necessitating careful enclosure height budgeting and thermal pathway planning. In high-power signal distribution or mixed-signal boards, verify that the 638-078-630-041 mounting does not obstruct convection airflow or create thermal dead zones beneath cable strain relief. The through-hole via structure also acts as a thermal pathway, so thermal modeling should account for solder joint thermal conductivity and potential heat dissipation through the connector to external cable shields.
What insertion and withdrawal force specifications should be evaluated for the 638-078-630-041 in field-service and maintenance scenarios?
The Mercury 638-078-630-041 female socket receptacle exhibits insertion and withdrawal forces determined by contact geometry, plating friction, and guide pin engagement. Excessive insertion force (typically >20 lbf for high-density D-Subs) increases risk of operator strain injuries, connector damage during field disconnection, and contact deformation that degrades signal integrity in subsequent remates. For frequent field service or hand-held mating operations, confirm that the 638-078-630-041 insertion force specification is documented and validate that cable assembly mating hardware provides ergonomic leverage or guided alignment to reduce operator fatigue and accidental connector damage.
How do the 78 contact positions of the 638-078-630-041 allocate between signal, ground, and power distribution in typical multi-channel applications?
The Mercury 638-078-630-041 78-position configuration typically reserves a portion of contacts for ground return paths and power rails, with the remaining contacts distributed across signal channels. In analog measurement or instrumentation applications, ground-to-signal contact ratio typically ranges 1:3 to 1:5, requiring careful layout planning to ensure adequate return path current capacity and minimize crosstalk between adjacent signal channels. Power distribution through the 638-078-630-041 depends on individual contact current ratings and overall connector thermal dissipation limits; high-current rails (>2 A per contact) should be verified against manufacturer thermal derating curves to prevent excessive contact temperature rise and gold-plating degradation.
What signal integrity considerations apply to the 638-078-630-041 when interfacing high-speed digital or RF signals?
The Mercury 638-078-630-041 D-Sub connector exhibits inherent impedance discontinuities at the signal transition from PCB trace to contact, potentially causing reflections and signal distortion in applications exceeding 10 MHz signaling rates. Contact-to-contact capacitive coupling in the high-density 78-position arrangement creates crosstalk pathways between adjacent channels; for multi-GHz RF or high-speed serial interfaces, verify that the 638-078-630-041 is rated for the required bandwidth and that grounding strategy isolates signal pairs with dedicated return contacts. Cable-to-connector impedance matching and shielding effectiveness of the 638-078-630-041 connector body should be evaluated against target signal-to-noise ratio and maximum acceptable bit-error rate.
How should the 638-078-630-041 be specified for environmental compliance in aerospace or medical device applications?
The Mercury 638-078-630-041 must meet applicable environmental standards including MIL-DTL-24308, RoHS/WEEE compliance, and IPC-A-610 solder joint quality standards for aerospace or medical applications. Verify that the 638-078-630-041 connector body material (typically polyetherimide or polycarbonate) meets flammability ratings (UL94 V-0 or equivalent) and outgassing requirements (ASTM E595) for pressurized or sealed enclosures. Medical applications may require biocompatibility certification and ESD discharge performance; confirm that the 638-078-630-041 meets IEC 61340-5-1 static control requirements and includes electrostatic safe design features to prevent device damage during assembly or field replacement.
What cable assembly specifications should be matched to the 638-078-630-041 to ensure reliable long-term performance?
Cable assemblies mated to the Mercury 638-078-630-041 require precision contact pin sizing (typically within 0.002 in tolerance) to ensure low contact resistance and minimize fretting corrosion during thermal cycling. The 638-078-630-041 contact retention force must be validated against cable assembly pull-out specifications; underdamped contacts or misaligned pins introduce contact resistance variability and intermittent faults in field service. Jacket material compatibility, bend radius constraints, and strain relief design should be verified for the 638-078-630-041 to prevent mechanical damage to internal conductors during installation in confined spaces or high-vibration environments.
How does the 638-078-630-041 cost-per-contact compare to alternative high-density connector architectures for system redesign decisions?
The Mercury 638-078-630-041 D-Sub provides cost-effective consolidation of multi-channel signal distribution compared to multiple parallel 50-position D-Subs or alternative high-density connectors (e.g., micro-D or circular connectors). The 638-078-630-041 leverages established D-Sub supply chains and manufacturing infrastructure, reducing per-unit connector cost and assembly labor versus proprietary connector families. However, total system cost must include cable assembly integration, connector-specific test fixtures, and field service tooling; for low-volume applications or aggressive cost targets, evaluate whether the 638-078-630-041 density advantage justifies these hidden integration costs or whether a simpler two-connector solution offers lower total cost of ownership.
What quality and traceability documentation should be requested for the 638-078-630-041 to support supply chain risk management?
Mercury 638-078-630-041 connector shipments should include batch or lot traceability documentation, contact plating certification, and MIL-spec compliance test reports (salt-fog, thermal cycling, insertion/withdrawal cycles) to validate manufacturing consistency and enable root-cause analysis in field failures. For critical applications, request that the 638-078-630-041 meet MIL-DTL-24308 source inspection requirements and include Certificates of Compliance (CoC) verifying RoHS/WEEE compliance and lead-free solder compatibility. Establish supplier quality agreements requiring periodic audit and first-article inspection (FAI) of the 638-078-630-041 to detect manufacturing process drift and prevent intermittent connector failures that degrade system reliability.
How should the 638-078-630-041 be stored and handled to prevent contact degradation and connector damage before assembly?
The Mercury 638-078-630-041 should be stored in moisture-controlled environments (40–60% relative humidity) and protected from dust accumulation on female socket contacts to prevent oxide formation and increased contact resistance during initial mating. The 638-078-630-041 connector body can absorb moisture if exposed to high-humidity conditions for extended periods; pre-mating bake-out (80–120°C for 4–8 hours) may be required before assembly to prevent solder joint voiding and board delamination. Contact protection caps or sealed packaging should remain on the 638-078-630-041 until immediately before cable assembly installation; handling without antistatic control or mechanical shock can deform contact springs or crack the connector body, introducing failures that may not manifest until field deployment.

Parts with Similar Specifications

The three parts on the right have similar specifications to EDAC Inc. 638-078-630-041

Product Attribute 638-078-630-047 638-078-630-046 638-078-630-042 638-078-630-048
Part Number 638-078-630-047 638-078-630-046 638-078-630-042 638-078-630-048
Manufacturer EDAC Inc. EDAC Inc. EDAC Inc. EDAC Inc.
Shell Size, Connector Layout - - - -
Voltage Rating - - - -
Connector Type - - - -
Number of Positions - - - -
Contact Finish - - - -
Contact Finish Thickness - - - -
Material Flammability Rating - - - -
Termination - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Flange Feature - - - -
Backset Spacing - - - -
Contact Form - - - -
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Color - - - -
Wire Gauge - - - -
Dielectric Material - - - -
Shell Material, Finish - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Current Rating (Amps) - - - -
Features - - - Simultaneous Sampling
Ingress Protection - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Contact Type - - - -
Number of Rows - - - -
Contact Material - - - -
Connector Style - - - -

638-078-630-041 Datasheet PDF

Download 638-078-630-041 pdf datasheets and EDAC Inc. documentation for 638-078-630-041 - EDAC Inc..

Datasheets
637,638 Series Ordering Guide.pdf
HTML Datasheet
Cylindrical Battery Holders.pdf

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Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
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United Kingdom 4
Italy 5
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New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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638-078-630-041 Image

638-078-630-041

EDAC Inc.
98D-638-078-630-041

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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