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HomeProductsConnectors, InterconnectsCard Edge Connectors - Edgeboard ConnectorsGMA32DTMN
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GMA32DTMN - Sullins Connector Solutions

Manufacturer Part Number
GMA32DTMN
Manufacturer
Sullins Connector Solutions
Allelco Part Number
98D-GMA32DTMN
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
37,761 pcs available, New & Original
Parts Description
CONN EDGE DUAL FMALE 64POS 0.125
Package
Tray
Data sheet
GMA32DTMN.pdf

Environmental Information

Sullins Connector Solutions REACH.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 37761
  • 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

GMA32DTMN Tech Specifications
Sullins Connector Solutions - GMA32DTMN technical specifications, attributes, parameters and parts with similar specifications to Sullins Connector Solutions - GMA32DTMN

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 -
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 actual contact pitch and row spacing on the GMA32DTMN dual edge connector, and how does this affect PCB layout design?
The GMA32DTMN features a 0.125" (3.18mm) pitch between individual contacts within each row, with two rows of 32 positions arranged in a dual-edge configuration. This 0.125" pitch is a legacy standard commonly found in industrial and computer peripherals. The dual-row arrangement means contacts are staggered across two parallel edges of the PCB card, requiring designers to account for the vertical separation between rows during trace routing. PCB layout software typically uses this pitch as a constraint to prevent trace violations near the connector footprint.
Can the GMA32DTMN be used as a replacement for older 64-position card edge connectors in legacy equipment?
The GMA32DTMN is a 64-position dual-edge female connector with 0.125" pitch and 0.062" card thickness specification, making it suitable for retrofitting applications that originally used Sullins or compatible dual-edge designs. However, direct interchangeability depends on matching the original card edge geometry, contact retention mechanism, and solder tail configuration. The GMA32DTMN uses a loop bellows contact type with gold-plated phosphor bronze, which provides reliable low-resistance connections but may require verification of the original connector's contact material and finish. Legacy equipment may have used different contact materials or finishes that could affect electrical performance if substituted.
What is the maximum current rating per contact on the GMA32DTMN, and how should this influence power distribution design?
The GMA32DTMN datasheet does not explicitly state a per-contact current rating, which is common for card edge connectors designed primarily for signal transmission rather than high-current power distribution. In practice, loop bellows contacts like those in the GMA32DTMN typically handle 1–2 amperes per contact under continuous operation, depending on ambient temperature and PCB thermal environment. Designers should assume conservative limits and avoid routing high-current supply rails through individual connector contacts; instead, dedicated power planes and thick traces should be used. The operating temperature range of -65°C to 125°C suggests the connector is rated for industrial environments, but current capacity decreases at elevated temperatures.
How does the phosphor bronze contact material in the GMA32DTMN compare to alternatives in terms of long-term reliability and insertion cycles?
Phosphor bronze is a standard contact material in mid-range connectors like the GMA32DTMN and offers a balance between electrical conductivity, mechanical durability, and cost. The GMA32DTMN uses phosphor bronze with a 30µin (0.76µm) gold finish, which protects against corrosion and reduces contact resistance. Compared to pure copper contacts, phosphor bronze exhibits superior fatigue resistance and maintains consistent electrical properties across repeated insertion cycles—typically rated for 50–100 mating cycles in industrial applications. The 0.76µm gold plating is relatively thin; in high-corrosion environments or applications with infrequent mating, thicker gold finishes (>1µm) may provide longer shelf life. The GMA32DTMN is better suited for fixed-installation or low-cycle-count applications than for hot-swap or frequently replugged interfaces.
What is the voltage rating of the GMA32DTMN, and are there creepage and clearance considerations for safety-critical designs?
The GMA32DTMN specification sheet does not list an explicit voltage rating, which is typical for generic card edge connectors intended for digital signal applications. When voltage rating is unspecified, the GMA32DTMN should be assumed suitable for standard logic-level signals (typically ≤24V DC) unless documented otherwise. For safety-critical applications requiring creepage and clearance compliance (IEC 60950, IEC 61010, or IEC 60950-1), designers must verify the insulation material (polyamide PA9T, Nylon 9T) and measure actual distances between conductors at maximum mating tolerance. The black insulation body does not inherently indicate specific dielectric strength; material testing or manufacturer consultation is necessary for applications exceeding 50V or operating in harsh environments.
How does the through-hole, right-angle mounting of the GMA32DTMN affect PCB assembly and card insertion mechanics?
The GMA32DTMN is specified for through-hole, right-angle mounting, meaning the connector's solder tails insert vertically into the PCB and the card-edge receptacle is oriented perpendicular to the board surface. This geometry allows perpendicular card insertion—typical in backplane and modular systems. Right-angle mounting requires adequate clearance above the PCB surface for card removal; designers should reserve at least 1–2 inches of vertical space. Unlike edge-mounted connectors, the GMA32DTMN's through-hole design distributes mechanical stress across multiple solder joints, improving vibration resistance in industrial settings. However, the rigid card edge geometry introduces insertion force requirements; the polyamide insulation body of the GMA32DTMN must guide the card accurately to prevent contact damage during mating.
Is the GMA32DTMN suitable for high-speed digital or low-impedance signal transmission?
The GMA32DTMN is not specifically designed for controlled-impedance or high-speed signal integrity applications. With 64 positions across a 0.125" pitch in a dual-edge arrangement, the GMA32DTMN introduces parasitic inductance and crosstalk typical of legacy card edge connectors. For signals exceeding a few megahertz or requiring impedance matching, the GMA32DTMN is not recommended; applications such as DDR memory interfaces, PCIe, or gigabit Ethernet require purpose-built connectors with tightly controlled impedance and differential pair spacing. The GMA32DTMN is better suited for control signals, lower-speed data busses, and power distribution in industrial backplanes and legacy peripheral equipment. Modern designs should consider higher-density, lower-pitch alternatives if signal rates exceed 100 MHz.
What environmental and material compliance certifications does the GMA32DTMN hold?
The GMA32DTMN is RoHS3 compliant, confirming elimination of lead and other restricted substances in solder and plating. The component is REACH-unaffected, indicating it does not contain substances of very high concern (SVHC) under the EU REACH regulation, making it suitable for European and global markets. The moisture sensitivity level (MSL) is listed as not applicable, meaning the connector does not require moisture-controlled storage prior to soldering. The polyamide PA9T (Nylon 9T) insulation body meets standard flammability requirements for industrial connectors, though specific UL or V-grade ratings are not provided in the datasheet. The ECCN classification (EAR99) indicates no export restrictions for most commercial applications. For aerospace, medical device, or automotive applications requiring additional certifications (AS, UL, FDA, AEC-Q), independent verification or manufacturer consultation is necessary.
How many total electrical connections can the GMA32DTMN provide, and how should power and ground distribution be planned?
The GMA32DTMN provides 64 total electrical connections (32 positions per row × 2 rows), all female. In typical system designs, not all 64 contacts are used simultaneously; common allocation patterns reserve some contacts for ground, some for power rails, and the remainder for signal lines. A conservative design practice allocates 20–30% of contacts to ground to provide low-impedance return paths and reduce crosstalk—meaning approximately 12–19 ground contacts in the GMA32DTMN. This leaves 45–52 contacts for mixed signal and power functions. The dual-edge geometry of the GMA32DTMN requires careful assignment of ground and power contacts to both rows to maintain balanced impedance. Ground vias should be placed immediately adjacent to the connector footprint to minimize return path inductance.
What solder joint reliability should be expected from the GMA32DTMN in thermal cycling and vibration environments?
The GMA32DTMN's through-hole solder termination is inherently more reliable than surface-mount alternatives in vibration-prone applications because the solder joint extends deep into the PCB, distributing stress across a larger volume. The operating temperature range of -65°C to 125°C defines thermal cycling stress; each cycle causes differential expansion between the phosphor bronze contacts, polyamide insulation body, and PCB substrate. Through-hole joints in the GMA32DTMN typically withstand 500+ thermal cycles (IPC-9701 Class 2 standard) before fatigue cracking initiates. In high-vibration applications (such as industrial machinery or transportation), the GMA32DTMN's loop bellows contacts provide compliant paths that reduce stress concentration. However, PCB trace geometry near the connector footprint remains a failure risk; traces should be kept short and thick to minimize stress concentration at the solder fillet.
Can the GMA32DTMN accommodate non-standard card thicknesses, or is the 0.062" specification mandatory?
The GMA32DTMN is designed for cards with a nominal thickness of 0.062" (1.57mm), which is a legacy standard matching the depth of the loop bellows contacts. Using cards significantly thinner than 0.062" will result in poor contact pressure and intermittent connections; cards thicker than 0.062" will meet excessive insertion resistance or potentially crack the insulation body. Some manufacturers allow ±0.010" tolerance, but this should not be assumed without verification. The GMA32DTMN's loop bellows design inherently accommodates minor thickness variations through the flex of the contact spring, but 0.05" or 0.075" cards will not perform reliably. Designers using the GMA32DTMN should specify PCB thickness tolerance as ±0.007" to ensure proper mating.
How should the GMA32DTMN be protected from corrosion and contact oxidation in marine or chemically aggressive environments?
The GMA32DTMN features a 30µin (0.76µm) gold plating over phosphor bronze contacts, which provides moderate corrosion protection but is insufficient for long-term marine or chemical exposure. The thin gold layer can be penetrated by salt-spray corrosion within 200–500 hours (ASTM B117), after which the underlying phosphor bronze oxidizes. For marine or outdoor applications, the GMA32DTMN should be installed within sealed, potted, or conformally coated enclosures to minimize moisture ingress. Conformal coating of the entire connector assembly—both sides of the PCB and the connector body—provides additional protection at the cost of reduced repairability. Alternative approaches include using a thicker gold finish (>1µm, available through custom orders) or substituting a stainless steel contact connector design. The polyamide insulation body of the GMA32DTMN is chemically resistant to common solvents and oils but may degrade under prolonged ultraviolet exposure if used outdoors.
What is the insertion force specification for the GMA32DTMN, and how does it impact manual assembly procedures?
The GMA32DTMN does not publish an explicit insertion force specification in the standard datasheet, but as a 64-contact dual-edge connector with loop bellows contacts, typical insertion forces range from 3–8 pounds (13–35 N) depending on PCB card alignment and contact cleanliness. High insertion force increases the risk of contact pin bending, damage to the polyamide insulation body, or user error during field installation. The GMA32DTMN's right-angle through-hole design requires perpendicular card insertion with minimal lateral misalignment; guide pins or keying features are not standard, so careful operator technique is necessary. For high-volume or automated insertion, mechanical guides or fixtures are recommended. If insertion force exceeds 10 pounds or insertion becomes difficult, stop and verify card alignment and contact cleanliness; forced insertion can damage the GMA32DTMN's contact geometry permanently.

Parts with Similar Specifications

The three parts on the right have similar specifications to Sullins Connector Solutions GMA32DTMN

Product Attribute GMA32DTMH GMA32DTMD GMA32DTKN GMA32DTMT
Part Number GMA32DTMH GMA32DTMD GMA32DTKN GMA32DTMT
Manufacturer Sullins Connector Solutions Sullins Connector Solutions Sullins Connector Solutions Sullins Connector Solutions
Number of Rows - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Pitch - - - -
Features - - - Simultaneous Sampling
Card Type - - - -
Card Thickness - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Read Out - - - -
Contact Finish - - - -
Contact Type - - - -
Material - Insulation - - - -
Flange Feature - - - -
Color - - - -
Contact Material - - - -
Number of Positions/Bay/Row - - - -
Termination - - - -
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Gender - - - -
Contact Finish Thickness - - - -
Number of Positions - - - -

GMA32DTMN Datasheet PDF

Download GMA32DTMN pdf datasheets and Sullins Connector Solutions documentation for GMA32DTMN - Sullins Connector Solutions.

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

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Sullins Connector Solutions

GMA32DTMN

Sullins Connector Solutions
98D-GMA32DTMN

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