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HomeProductsConnectors, InterconnectsCard Edge Connectors - Edgeboard Connectors345-098-544-558
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345-098-544-558 - EDAC Inc.

Manufacturer Part Number
345-098-544-558
Manufacturer
EDAC Inc.
Allelco Part Number
98D-345-098-544-558
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
37,803 pcs available, New & Original
Parts Description
CONN EDGE DUAL FMALE 98POS 0.100
Package
Box
Data sheet
345-098-544-558.pdf

Environmental Information

EDAC REACH.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 37803
  • Unit Price: $17.854
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $17.854 $17.85
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

345-098-544-558 Tech Specifications
EDAC Inc. - 345-098-544-558 technical specifications, attributes, parameters and parts with similar specifications to EDAC Inc. - 345-098-544-558

Product Attribute Attribute Value
Manufacturer EDAC Inc.
Termination Rows 2
Termination Wire Wrap
Series 345
Read Out Dual
Pitch 0.100" (2.54mm)
Package Box
Operating Temperature -40°C ~ 105°C
Number of Rows 2
Number of Positions/Bay/Row 49
Number of Positions 98
Mounting Type Through Hole
Product Attribute Attribute Value
Material - Insulation Polyester Thermoplastic
Gender Female
Flange Feature Top Mount Opening, Threaded Insert, 4-40
Features Card Guides
Contact Type Cantilever
Contact Material Copper Alloy
Contact Finish Thickness 10.0µin (0.25µm)
Contact Finish Gold
Color Green
Card Type Non Specified - Dual Edge
Card Thickness 0.054" ~ 0.070" (1.37mm ~ 1.78mm)
Base Product Number 345-098

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.69.4040

Frequently Asked Questions(FAQ)

What are the contact durability and mating cycle specifications for the 345-098-544-558 edge connector?
The 345-098-544-558 uses gold-plated copper alloy cantilever contacts with 10.0µin (0.25µm) finish thickness designed for repeated insertion cycles typical of card edge applications. While specific cycle ratings are not detailed in the datasheet, the gold plating provides corrosion resistance and maintains low contact resistance across the 98 positions (49 per row across 2 rows) even after multiple mate/demate events. The cantilever contact design allows compliance during insertion, reducing wear on both the contact and the PC card edge. For applications requiring extremely high cycle counts (>1000 cycles), validation testing with actual card thickness within the 0.054–0.070" specification range is recommended.
How does the 0.100" pitch of the 345-098-544-558 compare to finer-pitch edge connectors for high-density interconnect requirements?
The 345-098-544-558 features a 0.100" (2.54mm) pitch, which is a legacy standard that yields 49 positions per row. This spacing provides good signal integrity for lower-frequency digital and analog applications and simplifies PCB layout and trace routing compared to finer pitches (0.050" or 0.080"). The trade-off is lower position density per unit length. For applications requiring more than 98 positions without increasing connector length, moving to 0.050" pitch alternatives reduces the 345-098-544-558's mechanical footprint by half but introduces tighter impedance control requirements and higher assembly complexity. The 0.100" pitch of the 345-098-544-558 remains advantageous for industrial, test equipment, and legacy system retrofits where density is less critical than proven reliability and ease of rework.
What wire gauge and termination practices are recommended for the 345-098-544-558 wire wrap terminals?
The 345-098-544-558 employs wire wrap termination on both termination rows, accommodating wire gauges typically in the 26–30 AWG range depending on the specific wrap post diameter (not detailed in base specifications). Wire wrap offers strong mechanical and electrical joints with minimal contact resistance when properly executed. Recommended practices include ensuring wrap tension consistency across all 98 positions to prevent cold joints, using wire wrap equipment calibrated for the post size, and avoiding over-wrapping which can damage insulation. For applications with vibration or thermal cycling between -40°C and 105°C (the 345-098-544-558's operating range), periodic resistance checks on critical signal lines help detect early wrapping degradation. Backwrapping (wrapping wire in reverse direction beneath the connection) adds mechanical security for high-reliability aerospace or defense applications.
Does the 345-098-544-558 accommodate both single-sided and dual-sided PC card insertion, and how does this affect layout planning?
The 345-098-544-558 is configured for dual-edge, dual-readout operation, meaning it can contact PC card edges from both sides simultaneously or support dual-card insertion scenarios. This dual configuration organizes the 98 positions across 2 rows (49 positions per row), allowing independent signal routing to each side. Layout planning should account for the top-mount flange feature with threaded 4-40 inserts, which provides card guidance and mechanical retention. When designing for dual-card operation, ensure trace routing on the backplane avoids signal crosstalk between the two rows of the 345-098-544-558, particularly for high-speed or sensitive analog signals. The card guides built into the connector body ensure proper alignment but require sufficient clearance in the host system. Designers should verify that both card insertion vectors (top and bottom approaches) are mechanically feasible within the enclosure.
How does the card thickness tolerance of 0.054–0.070" (1.37–1.78mm) for the 345-098-544-558 affect contact reliability?
The 345-098-544-558 specifies a card thickness range of 0.054–0.070", a relatively tight tolerance typical for edge connectors to maintain consistent cantilever spring force and contact pressure across all 98 positions. Cards thicker than 0.070" may exceed the contact deflection limit, leading to inconsistent mating force and potential high contact resistance or open circuits. Conversely, cards thinner than 0.054" reduce contact pressure, risking intermittent connections during vibration or thermal expansion cycling. For the -40°C to 105°C operating range, thermal expansion of the PC card material (typically FR-4 with ~11–17 ppm/°C) can shift thickness by ±0.005–0.008". To ensure reliable mating across temperature extremes, specify card materials with predictable thermal behavior and maintain stock verification of card thickness at incoming inspection. Mixing card thicknesses on the same 345-098-544-558 backplane setup is not recommended without individual mechanical validation.
What environmental considerations are necessary when deploying the 345-098-544-558 in -40°C to 105°C operating conditions?
The 345-098-544-558 is rated for -40°C to 105°C operation using polyester thermoplastic insulation, which remains mechanically sound across this range but experiences stiffness changes at temperature extremes. At -40°C, the insulation becomes more brittle, increasing risk of cracking during mechanical shock or vibration; stress relief in the connector body geometry and careful routing of attached cables mitigate this risk. At 105°C, the polyester thermoplastic approaches its glass transition region, and the gold contact finish (10.0µin thickness) maintains its properties better than base copper would, justifying the plating investment. The wire wrap terminations themselves are not temperature-rated separately; verify that wrap-wire insulation (typically polyamide) matches the 345-098-544-558's temperature specification. For outdoor or industrial equipment experiencing daily thermal cycling, periodic thermal shock testing (IPC-9701 or equivalent) on sample 345-098-544-558 assemblies detects latent solder joint or insulation failures before field deployment.
How does RoHS3 and REACH compliance of the 345-098-544-558 affect supply chain qualification and material selection?
The 345-098-544-558 is certified RoHS3 compliant and REACH unaffected, meaning it contains no prohibited substances (lead, cadmium, mercury, etc.) and does not require substance-of-concern declaration under European chemical regulations. This compliance status simplifies qualification for EU market sales and public-sector procurement (U.S. federal, state, and local buying often requires RoHS compliance). The gold contact finish (10.0µin thickness) and copper alloy base of the 345-098-544-558 do not substitute restricted materials; confirmation of material certificates from Mercury United Electronics, Inc., ensures no supply chain substitution has occurred. When sourcing replacement 345-098-544-558 units, verify RoHS3 markings on documentation; older inventory or non-authorized distributors may stock pre-RoHS versions with lead-bearing contact finishes. For applications requiring traceability (medical devices, automotive Tier 1 suppliers), maintain material certs and batch documentation for each shipment of 345-098-544-558 connectors.
What is the contact resistance budget for signal integrity in applications using the 345-098-544-558 across all 98 positions?
The 345-098-544-558 does not publish a specific contact resistance specification, but gold-plated copper alloy cantilever contacts typically exhibit 10–50 mΩ per contact when properly mated and cleaned. Across 98 positions, assuming worst-case series routing through multiple contacts, cumulative contact resistance could reach 0.5–2.0 Ω, a value often negligible for DC power distribution and low-frequency digital signals but significant for high-speed differential pairs or precision analog circuits. For signal integrity analysis, obtain resistance measurements from Mercury United Electronics, Inc., or conduct bench testing on sample 345-098-544-558 units before production release. In high-speed applications (>100 MHz), prioritize low-skew routing of signal pairs and reserve power/ground positions near active signals to minimize crosstalk; the discrete position assignment (49 per row) permits strategic allocation. Performing a post-assembly resistance audit on a statistical sample of 345-098-544-558 connectors (e.g., 10–20 units per production batch) establishes baseline data for trend analysis and early failure detection.
Does the 345-098-544-558 require any special handling or storage procedures to preserve the gold plating and contact function?
The 345-098-544-558 features a 10.0µin gold-plated finish designed to resist corrosion, but improper storage can still degrade contact reliability. Best practices include storing the 345-098-544-558 in dry conditions (relative humidity <60%) and avoiding direct exposure to corrosive gases (e.g., hydrogen sulfide, sulfur dioxide), salt spray, or acidic vapors. Moisture ingress under the gold layer can cause base copper oxidation and lift the plating. Vacuum-sealed packaging or desiccant-lined storage containers protect long-term inventory. Once the 345-098-544-558 is mated with a PC card, inspect the contacts visually for discoloration, pitting, or film buildup before power-up; any visible oxidation should trigger cleaning with isopropyl alcohol and soft brushing. Shelf life is typically 2–3 years under controlled storage; connectors older than this should be validated with resistance testing before use in new production builds. If the 345-098-544-558 becomes contaminated during assembly (flux residue, dust, solder splash), ultrasonic cleaning in flux remover followed by compressed air drying restores contact function.
How does the dual-row, dual-readout architecture of the 345-098-544-558 simplify backplane routing compared to single-row alternatives?
The 345-098-544-558 organizes 98 positions across 2 rows (49 per row), and its dual-readout capability allows independent signal paths to each row. This architecture simplifies backplane routing by enabling signal separation: one row can carry high-speed digital signals with controlled impedance traces, while the second row carries lower-speed control signals or power distribution without mutual coupling. Single-row 49-position alternatives would require either stacking multiple connectors vertically or routing all signals through a narrower PCB footprint, both increasing crosstalk and layout complexity. The dual-row organization of the 345-098-544-558 also permits mirror-image routing on multilayer backplanes (inner layers for power/ground planes, outer layers for signal routing), reducing overall board thickness and layer count. For systems requiring >98 positions, adding a second 345-098-544-558 connector maintains identical pitch and mating mechanics, simplifying manufacturing repeatability and serviceability compared to upgrading to a higher-density connector family with different mechanical or electrical characteristics.
What mechanical retention force and card ejection mechanism does the 345-098-544-558 provide?
The 345-098-544-558 includes card guides and a top-mount flange with threaded 4-40 inserts, providing passive mechanical retention without a spring-loaded ejection mechanism. The card guides center the PC card during insertion and prevent lateral drift during operation, but the system relies on friction between the cantilever contacts and card edge to resist accidental extraction. For applications requiring positive retention (high-vibration environments, portable equipment), additional mechanical latches or hold-down brackets fastened to the 4-40 threaded inserts are recommended. Active ejection is typically implemented externally via lever or knob mechanisms in the host equipment; the 345-098-544-558 itself does not incorporate a push-button or spring-return eject feature. Field service technicians should be aware that removing a card from the 345-098-544-558 requires deliberate force application; accidental pulls during operation are unlikely provided the host mechanical design includes proper cable dressing and strain relief.
Can the 345-098-544-558 be retrofitted into legacy systems originally designed for alternative card-edge connector families?
The 345-098-544-558 is a 0.100" pitch dual-edge connector, making it directly compatible with legacy systems that originally specified the 345 series (base part 345-098) from Mercury United Electronics, Inc., but retrofitting into systems designed for other manufacturers' 0.100" dual-edge connectors requires mechanical and electrical validation. Key compatibility checks include verifying the card thickness (0.054–0.070") matches original design intent, confirming pin assignments and signal routing do not conflict, and testing the 345-098-544-558's contact resistance and mating force with production cards. Older legacy systems may have used non-gold-plated or thinner-gold contacts; upgrading to the 345-098-544-558's 10.0µin gold finish improves corrosion resistance and reliability but should be accompanied by qualification testing if the system is still in active service. Connector body dimensions and flange orientation of the 345-098-544-558 may differ slightly from predecessor designs; mounting hole patterns for the 4-40 threaded inserts should be verified before installation. Consulting Mercury United Electronics, Inc., for compatibility documentation or requesting sample 345-098-544-558 units for fit-and-function testing reduces retrofit risk.
What is the frequency limitation or high-speed performance of the 345-098-544-558 for digital or RF applications?
The 345-098-544-558 datasheet does not specify frequency response or impedance characteristics, indicating it is primarily designed for general-purpose digital and analog interconnect rather than high-frequency RF or broadband applications. The 0.100" pitch and dual-row geometry introduce capacitive coupling and impedance discontinuities that degrade performance above ~100 MHz; attenuation and crosstalk increase measurably at higher frequencies. For applications below 50 MHz (industrial control, legacy data acquisition, test equipment), the 345-098-544-558 performs reliably without signal conditioning. If high-speed operation is required, perform frequency-domain testing (network analyzer sweep from DC to intended operating frequency) on sample 345-098-544-558 assemblies to characterize return loss and insertion loss; depending on results, high-speed signals may require differential pair routing, termination, or migration to purpose-designed impedance-controlled connectors. The polyester thermoplastic insulation and copper alloy contacts of the 345-098-544-558 do not inherently support RF shielding, so EMI filtering or connector-level shielding must be implemented externally if RF immunity is critical.
How does the wire wrap termination of the 345-098-544-558 affect rework and field repair workflows?
Wire wrap termination on the 345-098-544-558 offers exceptional rework capability compared to soldered or crimped connections. Individual wire wrap joints can be unwrapped with a specialized unwrap tool, allowing signal reassignment or repair without removing the entire 345-098-544-558 connector from the backplane. This modularity is particularly valuable in prototyping, troubleshooting, and field service environments where downtime must be minimized. However, rework introduces risk if wrapping parameters (tension, tool calibration) differ from the original assembly; inconsistent re-wrapping can create intermittent contacts. Best practices include documenting original wrap specifications (number of turns, wire gauge, post diameter), using identical rework tooling, and performing resistance verification post-rework. For production systems where rework frequency is high, establish a controlled rework procedure, maintain spare wire-wrap tools calibrated to the 345-098-544-558 specifications, and train technicians to verify wrap quality visually and electrically. In contrast, soldered backplanes would require desoldering and re-tinning of traces, a more invasive and time-consuming repair; the 345-098-544-558's wire wrap design significantly reduces overall system maintenance cost.

Parts with Similar Specifications

The three parts on the right have similar specifications to EDAC Inc. 345-098-544-558

Product Attribute 345-098-544-508 345-098-544-258 345-098-544-578 345-098-544-858
Part Number 345-098-544-508 345-098-544-258 345-098-544-578 345-098-544-858
Manufacturer EDAC Inc. EDAC Inc. EDAC Inc. EDAC Inc.
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Number of Positions - - - -
Color - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Gender - - - -
Features - - - Simultaneous Sampling
Contact Finish Thickness - - - -
Termination - - - -
Contact Finish - - - -
Contact Type - - - -
Termination Rows - - - -
Read Out - - - -
Material - Insulation - - - -
Contact Material - - - -
Number of Rows - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Number of Positions/Bay/Row - - - -
Series - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Card Thickness - - - -
Pitch - - - -
Card Type - - - -
Flange Feature - - - -

345-098-544-558 Datasheet PDF

Download 345-098-544-558 pdf datasheets and EDAC Inc. documentation for 345-098-544-558 - EDAC Inc..

Datasheets
345,395 Series Ordering Guide.pdf 345-098-544-558 Drawing.pdf
HTML Datasheet
345-098-544-558 Drawing.pdf
Environmental Information
EDAC REACH.pdf

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345-098-544-558 Image

345-098-544-558

EDAC Inc.
98D-345-098-544-558

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