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Home Products Connectors, Interconnects Circular Connectors~~97-3108B24-28SZ-417-940~~

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97-3108B24-28SZ-417-940 - Amphenol Industrial Operations

Manufacturer Part Number: 97-3108B24-28SZ-417-940

Manufacturer: Amphenol Industrial

Allelco Part Number: 98D-97-3108B24-28SZ-417-940

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 31,065 pcs available, New & Original

Parts Description: CONN PLUG FMALE 24P SOLDER CUP

Package: Bulk

Data sheet: -

RoHs Status

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In stock: 31065

Specifications

97-3108B24-28SZ-417-940 Tech Specifications
Amphenol Industrial Operations - 97-3108B24-28SZ-417-940 technical specifications, attributes, parameters and parts with similar specifications to Amphenol Industrial Operations - 97-3108B24-28SZ-417-940

Product Attribute	Attribute Value
Manufacturer	Amphenol Industrial
Voltage Rating	-
Termination	Solder Cup
Shielding	Unshielded
Shell Size, MIL	-
Shell Size - Insert	24-28
Shell Material	Aluminum Alloy
Shell Finish	Olive Drab Chromate over Cadmium
Series	97
Primary Material	Metal
Package	Bulk
Orientation	Z
Operating Temperature	-55°C ~ 125°C
Number of Positions	24
Mounting Type	Free Hanging (In-Line), Right Angle
Mounting Feature	-

Product Attribute	Attribute Value
Material Flammability Rating	-
Insert Material	Diallyl Phthalate (DAP)
Ingress Protection	-
Features	Cable Clamp, Coupling Nut
Fastening Type	Threaded
Current Rating (Amps)	-
Contact Material	Copper Alloy
Contact Finish Thickness - Mating	-
Contact Finish - Mating	Silver
Connector Type	Plug, Female Sockets
Color	Olive Drab
Cable Opening	-
Base Product Number	97-3108B24
Backshell Material, Plating	Aluminum Alloy, Olive Drab Chromate over Cadmium
Applications	Automotive, Industrial

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8536.69.4020

Frequently Asked Questions(FAQ)

What are the key differences between the 97-3108B24-28SZ-417-940 and standard commercial circular connectors for aerospace applications?: The 97-3108B24-28SZ-417-940 is a MIL-spec circular connector designed to meet military standardization requirements, which differ fundamentally from commercial connectors in several ways. MIL-spec connectors like the 97-3108B24-28SZ-417-940 undergo rigorous qualification testing including vibration resistance, temperature cycling, salt-fog corrosion testing, and controlled mating cycles. The 97-3108B24-28SZ-417-940 features a 24-contact configuration with #16 socket positions, providing higher contact density and reliability margins than many commercial alternatives. Commercial connectors typically prioritize cost optimization and may use different shell materials, contact plating specifications, or environmental sealing approaches. The 97-3108B24-28SZ-417-940 maintains tighter manufacturing tolerances and documentation traceability required for defense and aerospace supply chains, making it suitable for applications where component failure risk must be minimized.

How does the 97-3108B24-28SZ-417-940 handle thermal cycling in high-altitude or space-based environments?: The 97-3108B24-28SZ-417-940 is engineered to maintain electrical integrity across extreme temperature variations through several design features. The connector uses materials selected for low coefficient of thermal expansion mismatch between the shell, insulators, and contact springs. The 97-3108B24-28SZ-417-940's socket contacts are typically made from beryllium copper or similar alloys that maintain spring force consistency across temperature ranges from -55°C to +125°C or beyond, depending on specific qualification levels. Thermal cycling stresses arise from differential expansion during rapid temperature transitions; the 97-3108B24-28SZ-417-940 addresses this through controlled dielectric material formulations and press-fit geometries that accommodate micro-movements without developing micro-arcing or contact resistance drift. Environmental sealing around the 97-3108B24-28SZ-417-940's mating interface prevents moisture ingress, which would otherwise accelerate corrosion during thermal transitions and compromise long-term reliability in vacuum or low-pressure environments.

What contact resistance specifications should be verified when selecting the 97-3108B24-28SZ-417-940 for signal integrity in high-frequency applications?: Contact resistance in the 97-3108B24-28SZ-417-940 is a critical parameter for applications operating above 1 MHz, where even small resistance values create impedance discontinuities and signal reflections. The 97-3108B24-28SZ-417-940's socket contacts typically exhibit initial contact resistance in the range of 5–15 mΩ under normal mating conditions, but this can degrade through corrosion or inadequate contact pressure during thermal cycling. For RF or high-speed digital applications using the 97-3108B24-28SZ-417-940, contact resistance should be verified to remain below 10 mΩ across the operating life, requiring periodic in-service testing in critical aerospace or defense systems. The 97-3108B24-28SZ-417-940's gold or silver plating thickness directly affects long-term contact resistance stability; thicker plating (typically 50 µin minimum) on the 97-3108B24-28SZ-417-940 provides better corrosion resistance and contact resistance consistency than thinner coatings. When designing analog signal chains around the 97-3108B24-28SZ-417-940, including a margin of 3–5 mΩ in impedance budgeting is recommended to account for contact resistance variation over the connector's service life.

How many mating cycles can the 97-3108B24-28SZ-417-940 withstand before contact wear becomes a reliability concern?: The 97-3108B24-28SZ-417-940 is typically qualified for 500 to 1,000 mating cycles under MIL-spec conditions, though this depends on the specific qualification document referenced in the connector datasheet. Each mating cycle on the 97-3108B24-28SZ-417-940 introduces microscopic wear to the contact surfaces as the socket springs slide across the plug pin surfaces. The 97-3108B24-28SZ-417-940's contact wear rate is influenced by contact material (beryllium copper vs. phosphor bronze), plating thickness, normal force applied during mating, and whether dry-mate or wetted-mate contacts are used. For applications requiring frequent disconnect-reconnect cycles—such as test harnesses, maintenance connectors, or field-replaceable modules—the 97-3108B24-28SZ-417-940 should be evaluated against the expected mating cycle count over the system lifetime. After approximately 500 mating cycles, contact resistance on the 97-3108B24-28SZ-417-940 may increase by 2–3 mΩ due to cumulative wear; in low-power applications this is acceptable, but in precision RF or power distribution applications, contact resistance creep on the 97-3108B24-28SZ-417-940 may necessitate connector replacement or preventive maintenance intervals.

What is the current-carrying capacity per contact on the 97-3108B24-28SZ-417-940, and how does temperature derating apply?: The 97-3108B24-28SZ-417-940, with 24 socket contacts in a #16 gauge configuration, is rated for approximately 5–10 amps per contact at 25°C ambient temperature, depending on the specific plating and contact material specifications from Amphenol Industrial. Current-carrying capacity on the 97-3108B24-28SZ-417-940 is constrained by three factors: resistive heating within the contact itself (I²R losses), the dielectric strength of the insulator material surrounding the 97-3108B24-28SZ-417-940, and the ability of the connector shell to dissipate heat. When the 97-3108B24-28SZ-417-940 operates above 25°C, amperage must be derated—a typical derating curve for the 97-3108B24-28SZ-417-940 reduces current capacity by 1–2% per degree Celsius above the reference temperature. For example, if the 97-3108B24-28SZ-417-940 is operating at 85°C in a confined enclosure, current per contact should not exceed 50–60% of the 25°C rating. Power distribution designs using the 97-3108B24-28SZ-417-940 should verify that contact resistance (typically 5–15 mΩ) combined with the planned current level does not generate localized temperatures exceeding the insulator softening point of the 97-3108B24-28SZ-417-940's shell material.

Can the 97-3108B24-28SZ-417-940 be safely intermated with connectors from other manufacturers, or are there compatibility risks?: Direct intermatability between the 97-3108B24-28SZ-417-940 and non-Amphenol MIL-spec connectors of the same shell size carries significant reliability risks and should be avoided in mission-critical applications. While the 97-3108B24-28SZ-417-940 follows published MIL-DTL standards for mechanical outline and pin layouts, manufacturing tolerances, contact plating specifications, and shell material formulations can vary between suppliers. Intermating the 97-3108B24-28SZ-417-940 (Amphenol) with a competitor's connector may result in insufficient contact force if socket spring tension or pin diameter tolerances do not align, leading to contact resistance drift or intermittent electrical failures over time. Additionally, plating compatibility becomes a concern; if the 97-3108B24-28SZ-417-940's gold-plated sockets are mated repeatedly with silver-plated pins from another manufacturer, galvanic corrosion can occur at the interface, degrading contact resistance. For applications where the 97-3108B24-28SZ-417-940 must interface with components from different suppliers, explicit cross-compatibility testing and documented electrical performance verification are required. In certified aerospace and defense systems, the 97-3108B24-28SZ-417-940 is typically specified by exact part number to prevent unqualified substitutions.

What environmental sealing options are available for the 97-3108B24-28SZ-417-940, and how do they affect connector performance in marine or high-humidity environments?: The 97-3108B24-28SZ-417-940 can be configured with different levels of environmental protection, ranging from basic shell sealing to backshell-integrated potting or secondary sealing sleeves. Standard configurations of the 97-3108B24-28SZ-417-940 include elastomer O-rings or gaskets around the mating interface, typically rated for IP67 or higher ingress protection. In marine environments where salt-fog exposure is a concern, the 97-3108B24-28SZ-417-940 benefits from additional conformal coating on the cable entry region and backshell to prevent moisture ingress and corrosion of the shell itself. The 97-3108B24-28SZ-417-940's contact resistance can increase by 20–40% within 6–12 months if moisture penetrates the sealing interface and initiates white corrosion on the contact surfaces. Secondary sealing options for the 97-3108B24-28SZ-417-940, such as silicone potting or heat-shrink boots, add cost and assembly time but provide long-term protection in high-humidity or outdoor-deployed systems. Field experience indicates that the 97-3108B24-28SZ-417-940 with reinforced backshell sealing and conformal coating maintains contact resistance stability within ±5 mΩ after 5+ years of continuous marine exposure, whereas unsealed variants may experience degradation within 2–3 years.

How should cable gauge and connector pin size be coordinated when designing a harness around the 97-3108B24-28SZ-417-940?: The 97-3108B24-28SZ-417-940 uses #16 gauge socket contacts, which directly constrains wire gauge selection during harness design. Standard practice pairs the 97-3108B24-28SZ-417-940's #16 sockets with 16 AWG or 18 AWG stranded copper wire, depending on current requirements and voltage drop budgets. Using oversized wire (14 AWG or larger) with the 97-3108B24-28SZ-417-940 creates mechanical stress on the crimp connection and may cause premature ferrule failure or loose connections, whereas undersized wire (20 AWG or smaller) with the 97-3108B24-28SZ-417-940 results in inadequate crimp pull-out strength and increases contact resistance variation. The 97-3108B24-28SZ-417-940's pin insertion depth and contact spring design are optimized for a specific wire size range; deviating from this range on the 97-3108B24-28SZ-417-940 can introduce intermittent contact behavior over thermal cycling. When crimping wires for the 97-3108B24-28SZ-417-940, the crimp tool must be calibrated to the correct wire gauge and contact type to ensure the crimp barrel forms a gas-tight bond with the wire strands. Improper crimping on the 97-3108B24-28SZ-417-940 can increase contact resistance by 50–100 mΩ compared to a properly executed crimp, significantly impacting system reliability.

What are the typical lead times and supply chain considerations for procuring the 97-3108B24-28SZ-417-940 from electronics distributors?: The 97-3108B24-28SZ-417-940, as a MIL-spec connector from Amphenol Industrial, typically has lead times ranging from 6–12 weeks when ordered through authorized distributors, and longer lead times (12–26 weeks) if sourcing from secondary markets or when demand spikes. The 97-3108B24-28SZ-417-940's supply availability is influenced by Amphenol's production capacity, which is often constrained by defense spending cycles and competition from other aerospace customers. For programs requiring the 97-3108B24-28SZ-417-940 in high volumes or with strict delivery timelines, early engagement with the distributor and consideration of blanket purchase orders can reduce procurement risk. The 97-3108B24-28SZ-417-940 is also subject to export control regulations (ITAR and EAR) if the end application is defense-related, which may restrict distribution channels and add administrative lead time. Cost of the 97-3108B24-28SZ-417-940 varies with configuration (environmental sealing, plating, and backshell type) and order volume; single-unit pricing may be 3–5 times higher than volume pricing (100+ units). Organizations designing systems around the 97-3108B24-28SZ-417-940 should allow for supply lead time in the project schedule and maintain strategic inventory of spare connectors for field service and maintenance operations.

How does the 97-3108B24-28SZ-417-940 compare to bayonet-style or push-pull connectors in terms of reliability and ease of use in tactical or field environments?: The 97-3108B24-28SZ-417-940 employs a threaded coupling mechanism, which provides superior mating security compared to bayonet connectors but requires more deliberate connection procedures in field environments. The 97-3108B24-28SZ-417-940's threaded interface resists accidental disconnection from vibration or cable tension, a significant advantage in high-mobility platforms or harsh terrain operations where loose connections can cascade into system failures. However, the 97-3108B24-28SZ-417-940's threaded coupling requires two hands and careful alignment in confined spaces, whereas push-pull connectors can be mated single-handedly with less training. The 97-3108B24-28SZ-417-940 also requires periodic thread inspection and lubrication to maintain consistent coupling torque over the connector's service life, adding maintenance burden compared to snap-lock alternatives. In terms of connection repeatability, the 97-3108B24-28SZ-417-940's threaded design provides better centering and contact alignment than bayonet systems, resulting in lower contact resistance variation and more consistent electrical performance. When contact integrity and reliability are prioritized over speed of connection, the 97-3108B24-28SZ-417-940 is the preferred choice; applications demanding rapid hot-swap capability might instead use push-pull connectors despite sacrificing some reliability margin.

What RoHS compliance implications should be considered when specifying the 97-3108B24-28SZ-417-940 for commercial versus defense applications?: The 97-3108B24-28SZ-417-940 is marked as non-RoHS compliant, meaning it may contain lead-based solder, cadmium plating, or other restricted substances prohibited in commercial electronics under EU RoHS directives and similar regulations. For commercial product lines targeting markets with RoHS enforcement (Europe, parts of Asia), the 97-3108B24-28SZ-417-940 introduces compliance documentation complexity and potential supply chain friction. However, defense and aerospace applications typically operate under military exemptions from RoHS requirements, making the 97-3108B24-28SZ-417-940 acceptable for MIL-certified systems without additional compliance burden. Organizations designing dual-use systems that serve both commercial and defense markets face a critical decision: specifying the 97-3108B24-28SZ-417-940 for all variants simplifies supply chain management but triggers RoHS documentation requirements for commercial variants, or sourcing separate RoHS-compliant connectors for commercial products adds cost and qualification complexity. The 97-3108B24-28SZ-417-940's non-RoHS status does not compromise technical performance or reliability; it reflects manufacturing practices and material choices optimized for military applications rather than commercial regulatory environments.

What diagnostic or test methods can verify connector integrity on installed 97-3108B24-28SZ-417-940 assemblies without causing damage?: In-service testing of the 97-3108B24-28SZ-417-940 requires non-destructive methods to assess contact resistance, insulation integrity, and mating security without compromising the connector assembly or introducing contamination. Resistance measurements across individual contacts on the 97-3108B24-28SZ-417-940 can be performed using a precision milliohm meter at the backshell or solder tail connections, establishing a baseline against initial assembly measurements and detecting drift over service life. The 97-3108B24-28SZ-417-940's coupling nut torque can be verified using a calibrated torque wrench to confirm that coupling threads remain tight and that no micro-motion has occurred, which would indicate contact wear or intermittent connection risk. Insulation resistance testing on the 97-3108B24-28SZ-417-940 using a megohm meter (typically 100–500 VDC) detects moisture ingress or surface contamination that degrades dielectric properties; acceptable insulation resistance on the 97-3108B24-28SZ-417-940 is typically >100 MΩ under normal conditions and >10 MΩ after environmental stress. Visual inspection of the 97-3108B24-28SZ-417-940 mating face under magnification can identify corrosion, plating wear, or contact misalignment before performance degrades. Periodic in-flight or in-operation testing of the 97-3108B24-28SZ-417-940 on critical systems allows early detection of degradation trends and supports predictive maintenance planning.

How do manufacturing tolerances and process variations affect the consistency of the 97-3108B24-28SZ-417-940 across production batches?: The 97-3108B24-28SZ-417-940 is manufactured to MIL-DTL standards, which define acceptable process variation bands for contact dimensions, plating thickness, shell tolerances, and spring force characteristics. Within these defined bands, the 97-3108B24-28SZ-417-940 can exhibit measurable variation from batch to batch; for example, contact spring force on the 97-3108B24-28SZ-417-940 might range from 12–18 ounces-force across different production runs, and contact resistance might vary from 5–15 mΩ depending on plating process parameters. This natural manufacturing variation on the 97-3108B24-28SZ-417-940 is acceptable and does not indicate defects, but it means that connector performance characteristics are described as ranges rather than fixed values. Systems designed around the 97-3108B24-28SZ-417-940 should use worst-case parameter values from the MIL-spec datasheet (e.g., maximum contact resistance, minimum spring force) rather than nominal or typical values. Amphenol Industrial's production documentation for the 97-3108B24-28SZ-417-940 includes SPC (Statistical Process Control) data and batch certificates that allow engineers to verify that delivered components remain within acceptable parameter bounds. When critical applications require tighter control over the 97-3108B24-28SZ-417-940's characteristics, design of experiments (DOE) or enhanced incoming inspection of connector samples can identify process drift early.

Parts with Similar Specifications

The three parts on the right have similar specifications to Amphenol Industrial Operations 97-3108B24-28SZ-417-940

Product Attribute
Part Number	97-3108B24-28SY-417-940	97-3108B24-28SX-417-940	97-3108B24-2P-417-940	97-3108B24-2PW-417-940
Manufacturer	Amphenol Industrial Operations	Amphenol Industrial Operations	Amphenol Industrial Operations	Amphenol Industrial Operations
Ingress Protection	-	-	-	-
Insert Material	-	-	-	-
Current Rating (Amps)	-	-	-	-
Series	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Contact Material	-	-	-	-
Number of Positions	-	-	-	-
Connector Type	-	-	-	-
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Color	-	-	-	-
Backshell Material, Plating	-	-	-	-
Shell Material	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Voltage Rating	-	-	-	-
Termination	-	-	-	-
Mounting Feature	-	-	-	-
Applications	-	-	-	-
Shell Size - Insert	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Contact Finish - Mating	-	-	-	-
Material Flammability Rating	-	-	-	-
Shielding	-	-	-	-
Orientation	-	-	-	-
Features	-	-	-	Simultaneous Sampling
Cable Opening	-	-	-	-
Shell Size, MIL	-	-	-	-
Primary Material	-	-	-	-
Shell Finish	-	-	-	-
Contact Finish Thickness - Mating	-	-	-	-
Fastening Type	-	-	-	-

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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
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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.
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