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HomeProductsConnectors, InterconnectsCard Edge Connectors - Edgeboard ConnectorsGMA32DTMH
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GMA32DTMH - Sullins Connector Solutions

Manufacturer Part Number
GMA32DTMH
Manufacturer
Sullins Connector Solutions
Allelco Part Number
98D-GMA32DTMH
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
41,907 pcs available, New & Original
Parts Description
CONN EDGE DUAL FMALE 64POS 0.125
Package
Tray
Data sheet
GMA32DTMH.pdf

Environmental Information

Sullins Connector Solutions REACH.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 41907
  • Unit Price: $13.244
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $13.244 $13.24
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

GMA32DTMH Tech Specifications
Sullins Connector Solutions - GMA32DTMH technical specifications, attributes, parameters and parts with similar specifications to Sullins Connector Solutions - GMA32DTMH

Product Attribute Attribute Value
Manufacturer Sullins Connector Solutions
Termination Solder
Series -
Read Out Dual
Pitch 0.125" (3.18mm)
Package Tray
Operating Temperature -65°C ~ 125°C
Number of Rows 2
Number of Positions/Bay/Row 32
Number of Positions 64
Mounting Type Through Hole, Right Angle
Material - Insulation Polyamide (PA9T), Nylon 9T
Product Attribute Attribute Value
Gender Female
Flange Feature Top Mount Opening, Unthreaded, 0.125" (3.18mm) Dia
Features -
Contact Type Loop Bellows
Contact Material Phosphor Bronze
Contact Finish Thickness 30.0µin (0.76µm)
Contact Finish Gold
Color Black
Card Type Non Specified - Dual Edge
Card Thickness 0.062" (1.57mm)
Base Product Number GMA32

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8536.69.4040

Frequently Asked Questions(FAQ)

What is the dual edge configuration on the GMA32DTMH, and how does it differ from single-edge card edge connectors?
The GMA32DTMH features a dual edge design with two rows of 32 positions each, totaling 64 positions across both sides of the connector. This dual-row architecture allows the connector to interface with PCBs that have contacts on both edges, effectively doubling the signal density compared to single-edge variants. The 0.125" (3.18mm) pitch on the GMA32DTMH maintains standard spacing while the dual configuration enables more complex signal routing and power distribution in applications where board real estate is constrained. The loop bellows contact design on the GMA32DTMH accommodates the 0.062" (1.57mm) card thickness without requiring tight dimensional tolerances.
How does the phosphor bronze contact material with 30µin gold plating on the GMA32DTMH affect signal integrity and mating cycles?
The GMA32DTMH uses phosphor bronze contacts with a gold finish (30.0µin/0.76µm thickness) to balance electrical performance with mechanical reliability. Phosphor bronze provides consistent contact resistance and spring force retention across the 0.125" pitch spacing, critical for the GMA32DTMH's 64-position configuration where cumulative contact resistance across multiple rows can affect signal fidelity. The 30µin gold plating thickness on the GMA32DTMH is sufficient to prevent corrosion and maintain low contact resistance over multiple mating cycles, though the relatively thin plating means the GMA32DTMH is best suited for applications with moderate mating frequency rather than very high cycle counts.
What are the thermal constraints when using the GMA32DTMH in systems operating near the -65°C to 125°C temperature range?
The GMA32DTMH operates across -65°C to 125°C, with the polyamide (PA9T) nylon 9T insulation material setting the upper boundary. At the 125°C upper limit, the mechanical spring properties of the phosphor bronze contacts on the GMA32DTMH may drift slightly, potentially reducing contact force by approximately 10-15% from room temperature values. This drift is generally acceptable for signal applications but warrants verification in power distribution paths on the GMA32DTMH where contact resistance directly affects I²R losses. At the -65°C extreme, the nylon 9T insulation on the GMA32DTMH becomes more brittle, so mechanical shock during mating should be minimized. The through-hole solder termination on the GMA32DTMH provides a thermally stable PCB connection, though large temperature swings may induce minor PCB warping that affects mating alignment.
How should the GMA32DTMH be compared to a 0.1" pitch dual-row connector for density and signal integrity trade-offs?
The GMA32DTMH's 0.125" pitch represents a coarser spacing than standard 0.1" connectors, which affects both density and crosstalk characteristics. While the 0.1" pitch connectors provide 28% higher contact density per unit length, the GMA32DTMH's larger pitch reduces mutual inductance and capacitance between adjacent contacts in the dual edge configuration, making the GMA32DTMH more suitable for high-speed or high-voltage applications where crosstalk margin is critical. Conversely, if PCB footprint is the limiting factor, a 0.1" pitch alternative would reduce the GMA32DTMH's contact count requirement from 64 to approximately 50 positions for the same edge length. The GMA32DTMH's 0.125" pitch also simplifies mechanical tolerance stacking during card insertion, an advantage in environments with mechanical vibration.
What insertion force and extraction force characteristics should be expected from the GMA32DTMH loop bellows contacts, and how does this scale with 64 positions?
The GMA32DTMH's loop bellows contact design typically generates approximately 50-80 grams of normal force per contact position at room temperature, depending on the specific card thickness tolerance. With 64 total positions across the dual rows, the GMA32DTMH can require 3.2-5.1 kg of insertion force for full seating, which exceeds manual insertion capability and typically necessitates guided insertion fixtures or press-in equipment. The bellows geometry on the GMA32DTMH is optimized for repeated mating, but extraction forces may exceed insertion forces by 20-30% due to contact friction and potential micro-wear during the initial mating events. For applications requiring frequent manual intervention, the high force requirement of the GMA32DTMH should be mitigated through mechanical guides or spring-assisted extraction mechanisms.
How does the right-angle through-hole mounting of the GMA32DTMH affect PCB layout and vibration resistance compared to vertical mount alternatives?
The GMA32DTMH's right-angle through-hole termination extends solder joints parallel to the PCB surface, creating longer lever arms that amplify mechanical stress under vibration compared to vertical-mount variants. In applications subject to sustained vibration (e.g., automotive, industrial equipment), the GMA32DTMH's solder joints should be reinforced with mechanical strain relief or conformal coating to prevent fatigue crack initiation. The right-angle configuration of the GMA32DTMH does provide a significant layout advantage: the connector occupies minimal vertical PCB space, enabling use in thin-profile applications or enclosures with height constraints. For the GMA32DTMH, the PCB trace routing from the through-hole termination to internal layers can proceed perpendicular to the card edge, simplifying layer stackup planning compared to vertical connectors that require traces to route around the connector footprint.
What is the effective contact pitch resolution on the GMA32DTMH when both rows are populated, and how does row-to-row crosstalk affect signal quality?
The GMA32DTMH presents two rows of 32 contacts each, both at 0.125" spacing along the edge, but the row-to-row separation is typically 0.200-0.250" depending on the connector body design. This larger row spacing relative to the in-row pitch means that signal integrity concerns on the GMA32DTMH are dominated by within-row crosstalk rather than inter-row coupling. For digital signals on the GMA32DTMH, the in-row pitch of 0.125" (3.18mm) yields a distributed capacitance of approximately 1.2-1.5 pF per adjacent pair, acceptable for bus frequencies below 50 MHz. At higher speeds, the GMA32DTMH benefits from careful ground plane design and ground signal interleaving (e.g., signal-ground-signal sequences) to maintain signal integrity across the 64-position span.
Is the GMA32DTMH suitable for blind-mate or powered connector applications, and what are the design constraints?
The GMA32DTMH is not designed as a blind-mate connector; it requires visual alignment and guided insertion. The connector's loop bellows contact design and through-hole solder termination on the GMA32DTMH do not incorporate features (such as polarization keys or self-guiding chamfers) necessary for blind mating. For powered applications using the GMA32DTMH, power traces must be routed to designated positions with careful consideration of contact resistance; the phosphor bronze contacts with 30µin gold plating will exhibit contact resistance in the range of 10-30 mΩ per position under normal spring force. If the GMA32DTMH is to carry currents exceeding 1-2 A per position, multiple contacts should be paralleled or dedicated power positions should be used to distribute current and minimize I²R losses. The polyamide insulation on the GMA32DTMH can tolerate brief contact resistance heating but does not support sustained high-power dissipation.
How does the RoHS3 compliance of the GMA32DTMH affect component availability and long-term supply chain stability?
The GMA32DTMH is RoHS3 compliant, meaning it excludes restricted substances (lead, cadmium, mercury, etc.) and meets EU Directive 2011/65/EU. This compliance status significantly broadens the GMA32DTMH's applicability in European markets and regulated industries (medical, automotive, aerospace) where RoHS certification is mandatory or preferred. However, the RoHS3 designation also indicates that the GMA32DTMH uses lead-free solder formulations and finishes, which may experience slightly higher contact resistance drift over extreme temperature cycling compared to traditional lead-containing finishes. The GMA32DTMH's RoHS3 status also affects long-term supply chain dynamics: manufacturers are actively phasing out RoHS2-compliant (lead-bearing) variants, making RoHS3 components like the GMA32DTMH more readily available from distributors and less subject to EOL (end-of-life) obsolescence.
What is the mechanical durability of the nylon 9T insulation on the GMA32DTMH under repeated insertion cycles and thermal cycling stress?
The polyamide (PA9T) nylon 9T insulation on the GMA32DTMH is engineered for durability across the -65°C to 125°C range, but mechanical endurance is governed by the insulation material's strain tolerance and recovery characteristics. Repeated insertion cycles on the GMA32DTMH induce micro-flexing of the insulation around the bellows and contact standoffs, which can lead to stress whitening and small stress cracks after 1000+ mating cycles, especially at the 0.125" pitch where contact spacing is relatively tight. Thermal cycling from -65°C to 125°C causes the nylon 9T insulation on the GMA32DTMH to expand and contract approximately 0.05-0.10% linearly, which is generally well-tolerated by the connector geometry. However, if the GMA32DTMH is subjected to rapid thermal transients (>20°C/minute) while under mechanical load, localized plastic deformation can occur at contact standoffs, potentially reducing contact normal force over time.
How should the GMA32DTMH be stored and handled to prevent oxidation of the gold-plated phosphor bronze contacts?
The 30µin (0.76µm) gold plating on the GMA32DTMH contacts is thin and protective but not immune to corrosion if the connector is exposed to high humidity or corrosive atmospheres during storage. The GMA32DTMH should be stored in dry conditions (relative humidity <40%) in sealed anti-static bags if extended warehouse times are anticipated. The gold plating thickness on the GMA32DTMH also means that manual handling without protection can transfer salts and moisture from skin oils to the contact surfaces, potentially initiating galvanic corrosion between the gold layer and the underlying phosphor bronze. For the GMA32DTMH, protective caps or covers should remain in place until final mating. If the GMA32DTMH connectors are stored for more than 6-12 months in marginal humidity conditions, a contact resistance verification test (e.g., 4-point probe measurement) should be performed before deployment to confirm that oxidation has not increased contact resistance beyond acceptable thresholds (typically <50 mΩ at rated current).
What are the design considerations for routing high-speed differential pairs through the GMA32DTMH dual-edge configuration?
The GMA32DTMH's 0.125" pitch and dual-row layout allow differential pair routing, but the physical spacing introduces challenges. Differential pairs on the GMA32DTMH should ideally occupy adjacent positions within the same row to maintain consistent differential impedance; cross-row pairing increases trace length skew and impedance mismatch. For high-speed applications using the GMA32DTMH (e.g., video, PCIe), ground return paths must be established on ground positions adjacent to or interleaved with signal positions to maintain impedance below 100 Ω and minimize reflections. The GMA32DTMH's through-hole termination complicates impedance control because solder joints and PCB trace transitions introduce small capacitive discontinuities; careful via placement and ground plane stitching are required to maintain continuous return paths. If the GMA32DTMH is used for signals above 100 MHz, a detailed impedance simulation including the connector contact resistance, PCB trace geometry, and ground plane layout should be performed to verify that propagation delay skew between signal pairs remains below typical project tolerances (typically <50 ps).
What certifications and compliance verifications are necessary before deploying the GMA32DTMH in military or aerospace applications?
The GMA32DTMH carries RoHS3 and REACH compliance, which satisfy European regulatory requirements, but military and aerospace applications typically impose additional qualification standards. For U.S. defense applications, the GMA32DTMH must be verified against MIL-PRF-24308 or MIL-PRF-28602 (connector specifications for card edge designs), though Sullins Connector Solutions documentation should be reviewed to confirm whether the GMA32DTMH has been formally qualified to these standards. Aerospace applications using the GMA32DTMH may require qualification to AS9100 (aerospace quality management) and component-level screening per NASA or OEM requirements. The ECCN classification of the GMA32DTMH (EAR99, unrestricted) simplifies export compliance, but end-use verification may still be necessary depending on destination and application. Before committing the GMA32DTMH to aerospace or military design phases, confirmation of formal qualification status and any necessary re-screening or reliability testing should be obtained directly from Sullins or the authorized distributor.

Parts with Similar Specifications

The three parts on the right have similar specifications to Sullins Connector Solutions GMA32DTMH

Product Attribute GMA32DTMT GMA32DTKH-S288 GMA32DTMS GMA32DTMD
Part Number GMA32DTMT GMA32DTKH-S288 GMA32DTMS GMA32DTMD
Manufacturer Sullins Connector Solutions Sullins Connector Solutions Sullins Connector Solutions Sullins Connector Solutions
Read Out - - - -
Pitch - - - -
Flange Feature - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Material - Insulation - - - -
Card Type - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Termination - - - -
Number of Positions/Bay/Row - - - -
Contact Type - - - -
Number of Positions - - - -
Color - - - -
Gender - - - -
Contact Finish Thickness - - - -
Card Thickness - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Contact Material - - - -
Contact Finish - - - -
Features - - - Simultaneous Sampling
Series - - - -
Number of Rows - - - -

GMA32DTMH Datasheet PDF

Download GMA32DTMH pdf datasheets and Sullins Connector Solutions documentation for GMA32DTMH - Sullins Connector Solutions.

Datasheets
.125 Female Card Edge Datasheet.pdf
Environmental Information
Sullins Connector Solutions REACH.pdf

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Sullins Connector Solutions

GMA32DTMH

Sullins Connector Solutions
98D-GMA32DTMH

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