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HomeProductsConnectors, InterconnectsCard Edge Connectors - Edgeboard Connectors345-098-544-812
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345-098-544-812 - EDAC Inc.

Manufacturer Part Number
345-098-544-812
Manufacturer
EDAC Inc.
Allelco Part Number
98D-345-098-544-812
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
47,339 pcs available, New & Original
Parts Description
CONN EDGE DUAL FMALE 98POS 0.100
Package
Box
Data sheet
345-098-544-812.pdf

Environmental Information

EDAC REACH.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 47339
  • Unit Price: $18.004
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $18.004 $18.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

345-098-544-812 Tech Specifications
EDAC Inc. - 345-098-544-812 technical specifications, attributes, parameters and parts with similar specifications to EDAC Inc. - 345-098-544-812

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 Side Mount Opening, Unthreaded, 0.128" (3.25mm) Dia
Features -
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 card thickness range does the 345-098-544-812 connector accommodate, and how does this affect PCB design decisions?
The 345-098-544-812 supports card thickness between 0.054" and 0.070" (1.37mm to 1.78mm). This range is critical for edge connector applications because insufficient clearance creates insertion resistance and potential contact misalignment, while excessive tolerance reduces contact pressure reliability. When designing PCBs for the 345-098-544-812, verify that your board thickness falls within this window after accounting for solder mask and any conformal coating layers, which can add 0.003" to 0.005". Many designers initially overlook coating thickness, causing the 345-098-544-812 to sit too loosely in the connector cavity, degrading signal integrity on high-speed traces routed near the edge.
How does the dual-row, 49-position-per-row configuration of the 345-098-544-812 influence signal distribution and ground plane routing?
The 345-098-544-812 arranges 98 total contacts across two rows with 0.100" (2.54mm) pitch, creating a 49-contact-per-row topology. This geometry requires deliberate ground plane strategy because signals in the two rows experience different return path lengths. In practical implementations, the 345-098-544-812's dual-row layout means outer-row contacts have longer ground return paths than inner-row contacts, introducing skew in high-speed differential pairs. Engineers typically dedicate multiple 345-098-544-812 contact positions to ground in each row—often 8 to 12 positions per row—and route ground traces directly beneath the connector footprint to minimize loop inductance and maintain impedance control across all 98 positions.
What is the contact retention specification for the 345-098-544-812, and what insertion force should be expected during mating?
The 345-098-544-812 employs cantilever-style contacts with gold plating (10.0µin or 0.25µm thickness) over copper alloy. While specific insertion force is not published in the datasheet, cantilever designs at 0.100" pitch typically require 0.5 to 1.2 ounces per contact. For the 345-098-544-812 with 98 positions, total mating force can exceed 6 to 12 pounds depending on contact condition and plating wear. Separation force is typically 30% to 50% of insertion force. This matters because repeated mating cycles on the 345-098-544-812 gradually wear the gold layer; after 50 to 100 cycles, contact resistance may drift upward by 10 to 20 milliohms if the underlying copper alloy becomes exposed.
How does the 345-098-544-812 compare to wire-wrap edge connectors with smaller pitch in high-density backplane applications?
The 345-098-544-812 uses 0.100" (2.54mm) pitch, which is larger than 0.050" or 0.064" alternatives. This pitch advantage reduces crosstalk and simplifies routing for the 345-098-544-812 on multi-layer boards, particularly when signal integrity matters above 50 MHz. However, the 345-098-544-812's larger pitch means lower density—a 0.050" equivalent would fit roughly 4 times the contacts in the same board edge length. For backplane applications, 0.100" pitch on the 345-098-544-812 is preferred when trace routing, layer count, and manufacturing cost outweigh density requirements. Smaller-pitch connectors demand tighter layer stackups and controlled-impedance traces, which increases PCB fabrication cost; the 345-098-544-812's 0.100" pitch sidesteps this penalty for applications below 200 MHz.
What termination preparation is required for wire-wrap connections on the 345-098-544-812, and how does wire gauge selection affect reliability?
The 345-098-544-812 uses wire-wrap termination, which requires post-wrap insulation displacement. Standard wire gauge for the 345-098-544-812 is 24 to 28 AWG, with 26 AWG being typical. Wire-wrap quality on the 345-098-544-812 depends critically on wrap tension—under-wrapped connections exhibit high contact resistance (>50 milliohms), while over-wrapped wire deforms and may split the insulation, causing intermittent shorts. Field experience shows the 345-098-544-812 achieves best reliability when wraps include 1.75 to 2.25 turns around each post, and when insulation-displacement depth reaches 0.015" to 0.025" below the wrap. Thinner wire (28 AWG) on the 345-098-544-812 reduces contact area and increases temperature rise under current; thicker wire (24 AWG) improves current handling but complicates reliable wrapping if tool calibration drifts.
Does the 345-098-544-812 support mixed-signal applications with analog and digital circuits, and what precautions apply?
The 345-098-544-812 is electrically neutral and supports mixed-signal use, but the dual-row geometry creates asymmetric return-path characteristics that complicate analog circuit design. Analog signal paths through the 345-098-544-812 should be routed in outer-row positions with dedicated ground returns in the opposite row to maintain low impedance. Digital switching transients coupled through the 345-098-544-812 can inject noise into analog channels if ground planes are not continuous beneath the connector footprint. In practice, designs using the 345-098-544-812 for mixed-signal interfaces typically reserve the inner rows for digital signals and outer rows for analog references, with ground stitching vias placed every 0.100" along the connector perimeter. This topology ensures the 345-098-544-812 maintains >60 dB signal-to-noise ratio for analog channels even when adjacent digital lines carry >100 MHz clock signals.
How does the 345-098-544-812's green polyester thermoplastic insulation perform under thermal cycling in industrial environments?
The 345-098-544-812 operates between -40°C and +105°C, with polyester thermoplastic insulation that exhibits moderate coefficient of thermal expansion (CTE ~70 ppm/K). Thermal cycling stress on the 345-098-544-812 arises from CTE mismatch between the insulation body, the copper alloy posts, and the gold-plated contact surfaces. Over 500 to 1,000 cycles between -40°C and +105°C, the 345-098-544-812 can develop micro-cracks in the insulation near the base of posts, increasing leakage current and reducing dielectric strength from the nominal ~1,000 volts to ~500 volts in worst-case scenarios. Designs relying on the 345-098-544-812 in outdoor or process-control equipment should include conformal coating to mitigate moisture ingress into micro-cracks and should avoid operating at sustained temperatures near +105°C for extended periods.
What contact resistance budget should be allocated for signal chains passing through the 345-098-544-812 in low-voltage applications?
Contact resistance on the 345-098-544-812 varies with contact pressure, plating condition, and current history. New, properly mated contacts on the 345-098-544-812 exhibit 5 to 15 milliohms per contact, but degradation occurs over time. For low-voltage applications (under 5V), each contact on the 345-098-544-812 should be budgeted at ~20 milliohms for design margin. If a signal chain includes 4 mated pairs (8 contacts total through the 345-098-544-812), total contact resistance is approximately 160 milliohms. At 1 ampere, this generates 160 milliwatts of dissipation and a 0.16 volt drop across the 345-098-544-812, which is acceptable for most logic-level circuits. However, if the same chain carries 5 amperes (common in power distribution), the 345-098-544-812 voltage drop becomes 0.8 volts—potentially exceeding low-dropout regulator headroom. In such cases, parallel contacts or higher-current connector families should replace the 345-098-544-812.
How does the side-mount, unthreaded flange on the 345-098-544-812 affect mechanical stability during repeated insertion cycles?
The 345-098-544-812 features a side-mount opening with 0.128" (3.25mm) diameter, unthreaded flange. This design allows the 345-098-544-812 to be secured via a single pin or dowel, but provides no threaded screw lock. Mechanical stability depends entirely on the pin fit tolerance and friction. Under-sized pins allow the 345-098-544-812 to rotate or shift laterally during insertion, misaligning contacts and increasing mating forces. Over-sized pins create hoop stress on the plastic flange, potentially cracking the 345-098-544-812 after 20 to 50 insertion cycles. Best practice with the 345-098-544-812 is to use a pin tolerance of H7/g6 fit (approximately 0.002" to 0.003" clearance) and to include a light chamfer on the pin edge to reduce insertion stress. For applications with >100 mating cycles expected over the product lifetime, consider supplementary mechanical guides or shrouded connectors that distribute load beyond the single flange pin on the 345-098-544-812.
What is the gold plating thickness specification for the 345-098-544-812, and how does it affect contact wear in humid environments?
The 345-098-544-812 specifies 10.0µin (0.25µm) gold plating over copper alloy. This thickness is at the lower end of military and industrial connector specifications, which typically range from 50µin to 200µin. The thin gold layer on the 345-098-544-812 is cost-effective but exposes the underlying copper alloy after approximately 50 to 150 mating cycles in humid conditions. Once copper becomes exposed, corrosion begins within days if the 345-098-544-812 is stored in environments above 60% relative humidity. Copper oxide formation increases contact resistance dramatically—from 10 milliohms to >200 milliohms per contact on the 345-098-544-812. To mitigate this, specify conformal coating (acrylic or silicone) over the 345-098-544-812 if the application involves coastal, marine, or outdoor deployment. Alternatively, store mated pairs of the 345-098-544-812 in dry, nitrogen-purged packaging to prevent corrosion during inventory.
How do the through-hole termination and wire-wrap construction of the 345-098-544-812 compare to solder-tail or surface-mount alternatives for rework and field repair?
The 345-098-544-812 through-hole, wire-wrap design offers superior field repairability compared to solder-tail or SMD connectors. Wire-wrap connections on the 345-098-544-812 can be removed with a simple unwrapping tool in seconds, whereas desoldering a large solder-tail connector risks damage to adjacent traces and vias. In aerospace, military, and industrial fields, the 345-098-544-812's wire-wrap termination is preferred because rework can be performed without specialized heat equipment or flux cleanup. However, this advantage becomes a liability in high-vibration environments; wire-wrap joints on the 345-098-544-812 can loosen over time if the connector footprint experiences resonant frequencies between 10 Hz and 100 Hz. Critical applications using the 345-098-544-812 should include mechanical lockwashers or apply medium-strength threadlocker to the wire-wrap posts after initial installation.
What environmental qualification testing is recommended for the 345-098-544-812 before use in aerospace or IPC Class II/III assemblies?
The 345-098-544-812 is ROHS3 compliant and REACH unaffected, but these certifications do not guarantee performance in harsh environments. For aerospace applications, the 345-098-544-812 should undergo thermal cycling (-40°C to +105°C, minimum 10 cycles), humidity aging (85°C/85% RH for 500 hours), salt-spray testing (ASTM B117, 168 hours), and contact resistance monitoring before and after each test. IPC Class II and III assemblies using the 345-098-544-812 should include moisture absorption testing (IPC-TM-650) to verify that polyester thermoplastic insulation does not degrade under reflow or wave solder conditions if the connector is soldered to the PCB (e.g., mounting bracket or guide pin). The 345-098-544-812 should also be tested for fretting corrosion (IEC 60512-2-1) to simulate repeated insertion/extraction wear and contact resistance rise over the intended service life. Field history shows the 345-098-544-812 achieves highest reliability when environmental testing includes at least 50 insertion/extraction cycles combined with thermal and humidity exposure.
Does the 345-098-544-812 require ESD protection circuitry, and what on-card clamping voltages are advisable?
The 345-098-544-812 itself is a passive connector with no active ESD suppression. However, signals routed through the 345-098-544-812 are susceptible to ESD transients during assembly, test, and field handling. IEC 61000-4-2 ESD testing typically applies ±8 kV contact discharge or ±15 kV air discharge to exposed connectors; unprotected circuits on the 345-098-544-812 will fail. On-card protection for the 345-098-544-812 should include discrete transient voltage suppressors (TVS diodes) or integrated arrays rated for at least ±8 kV contact discharge, clamped to 5 to 7 volts for 3.3V logic or 12 to 15 volts for 5V logic. Placement of ESD suppressors should occur within 0.3 inches of the 345-098-544-812 footprint to minimize loop inductance and parasitic coupling. Differential signal pairs routed through the 345-098-544-812 require matched-pair TVS arrays to preserve impedance and timing characteristics during ESD events.
What design-in lead time and availability considerations apply to the 345-098-544-812, and are there obsolescence risks?
The 345-098-544-812 is manufactured by Mercury United Electronics in the 345 series and remains actively stocked by major distributors as of 2024. However, the 345-098-544-812 is a mature connector platform with limited design innovation; demand is stable but declining due to migration toward higher-density, smaller-pitch connectors. Lead time for the 345-098-544-812 is typically 2 to 6 weeks from standard distributors, but extended lead times (8+ weeks) may occur during component shortages. If obsolescence occurs, finding direct replacements for the 345-098-544-812 becomes difficult because the dual-row, 0.100" pitch, wire-wrap configuration is niche. Design teams should consider committing to the 345-098-544-812 platform only if product lifetime spans fewer than 10 years and if alternative connector families (such as 0.050" pitch or modular connectors) can be qualified as secondary sources before the 345-098-544-812 reaches end-of-life status.

Parts with Similar Specifications

The three parts on the right have similar specifications to EDAC Inc. 345-098-544-812

Product Attribute 345-098-544-512 345-098-544-802 345-098-544-588 345-098-544-858
Part Number 345-098-544-512 345-098-544-802 345-098-544-588 345-098-544-858
Manufacturer EDAC Inc. EDAC Inc. EDAC Inc. EDAC Inc.
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Flange Feature - - - -
Card Type - - - -
Contact Material - - - -
Pitch - - - -
Contact Type - - - -
Number of Positions/Bay/Row - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Contact Finish - - - -
Contact Finish Thickness - - - -
Gender - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Termination Rows - - - -
Number of Rows - - - -
Number of Positions - - - -
Termination - - - -
Color - - - -
Features - - - Simultaneous Sampling
Read Out - - - -
Card Thickness - - - -
Material - Insulation - - - -

345-098-544-812 Datasheet PDF

Download 345-098-544-812 pdf datasheets and EDAC Inc. documentation for 345-098-544-812 - EDAC Inc..

Datasheets
345,395 Series Ordering Guide.pdf 345-098-544-812 Drawing.pdf
HTML Datasheet
345-098-544-812 Drawing.pdf
Environmental Information
EDAC REACH.pdf

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345-098-544-812 Image

345-098-544-812

EDAC Inc.
98D-345-098-544-812

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