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ICO-324-STT Equivalent & Substitute Parts
Part Overview
The ICO-324-STT is a 24-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting applications. This socket features a 0.3" (7.62mm) row spacing with 0.100" (2.54mm) pitch contacts, tin-plated beryllium copper mating contacts, and brass posts. The component operates across a temperature range of -55°C to 105°C and is rated for 1 A current with 10mOhm contact resistance. The ICO-324-STT maintains Active product status and is RoHS3 compliant. Equivalent substitute parts are identified based on matching electrical specifications, mechanical dimensions, and mounting characteristics to ensure functional interchangeability in DIP socket applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Positions | 24 (2 x 12) |
| Type | DIP, 0.3" (7.62mm) Row Spacing |
| Pitch - Mating | 0.100" (2.54mm) |
| Pitch - Post | 0.100" (2.54mm) |
| Contact Material - Mating | Beryllium Copper |
| Contact Material - Post | Brass |
| Mounting Type | Through Hole |
| Termination | Solder |
| Operating Temperature Range | -55°C ~ 105°C |
| Current Rating | 1 A |
| Contact Resistance | 10mOhm |
| Housing Material | Polyester, Glass Filled |
| Features | Open Frame |
Substitute Part Grouping Explanation
Substitution eligibility for the ICO-324-STT is determined by strict alignment of the following critical parameters:
Dimensional and Electrical Compatibility:
- Number of positions: 24 (2 x 12) configuration
- DIP socket type with 0.3" (7.62mm) row spacing
- Mating pitch: 0.100" (2.54mm)
- Post pitch: 0.100" (2.54mm)
- Through-hole solder termination
- Beryllium copper mating contacts
- Brass or brass alloy post material
Performance Parameters:
- Operating temperature range must encompass or match the -55°C to 105°C specification
- Current rating must meet or exceed 1 A
- Contact resistance specifications must be compatible with 10mOhm baseline
Compliance and Status:
- Active product status
- Packaging in tube format
The substitute part 110-99-324-41-001000 from Mill-Max Manufacturing Corp. satisfies all critical dimensional, electrical, and mechanical parameters required for functional equivalence with the ICO-324-STT.
Parameter Comparison
| Parameter | ICO-324-STT (Samtec) | 110-99-324-41-001000 (Mill-Max) |
|---|---|---|
| Manufacturer | Samtec Inc. | Mill-Max Manufacturing Corp. |
| Number of Positions | 24 (2 x 12) | 24 (2 x 12) |
| Type | DIP, 0.3" (7.62mm) Row Spacing | DIP, 0.3" (7.62mm) Row Spacing |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Pitch - Post | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Contact Finish - Mating | Tin | Tin-Lead |
| Contact Material - Mating | Beryllium Copper | Beryllium Copper |
| Contact Material - Post | Brass | Brass Alloy |
| Mounting Type | Through Hole | Through Hole |
| Features | Open Frame | Open Frame |
| Termination | Solder | Solder |
| Operating Temperature Range | -55°C ~ 105°C | -55°C ~ 125°C |
| Current Rating (Amps) | 1 A | 3 A |
| Product Status | Active | Active |
| Packaging | Tube | Tube |
Engineering Selection Recommendations
ICO-324-STT (Samtec Inc.) is the primary specification. This component is Active in product status and RoHS3 compliant, meeting current environmental and regulatory requirements for new designs.
110-99-324-41-001000 (Mill-Max Manufacturing Corp.) is a functional equivalent substitute. This part maintains identical mechanical and electrical compatibility across all critical parameters: 24-position DIP configuration, 0.3" row spacing, 0.100" pitch, through-hole solder termination, beryllium copper mating contacts, and brass alloy posts. The substitute provides an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C) and higher current rating (3 A versus 1 A), offering enhanced performance margins. However, the substitute uses tin-lead contact finish and is RoHS non-compliant, which may restrict its use in applications subject to RoHS3 requirements. Selection between these parts depends on compliance obligations and environmental specifications of the target application.
Frequently Asked Questions (FAQ)
Q: What determines if a DIP socket can substitute for the ICO-324-STT?
A: Substitution requires matching the following parameters: 24-position configuration in 2 x 12 arrangement, DIP type with 0.3" (7.62mm) row spacing, 0.100" (2.54mm) mating and post pitch, through-hole solder termination, beryllium copper mating contacts, and brass or brass alloy post material. Operating temperature range and current rating must be compatible with or exceed the original specification.
Q: Is the 110-99-324-41-001000 mechanically compatible with the ICO-324-STT?
A: Yes. Both sockets share identical mechanical dimensions: 24 positions in 2 x 12 DIP configuration, 0.3" row spacing, and 0.100" pitch. Both feature open-frame design with through-hole solder termination and are packaged in tubes. Mechanical interchangeability is confirmed.
Q: What is the difference in contact finish between these parts?
A: The ICO-324-STT uses tin plating on mating contacts, while the 110-99-324-41-001000 uses tin-lead plating with 200.0µin (5.08µm) thickness specification. Both finishes provide electrical conductivity and corrosion resistance suitable for DIP socket applications. The tin-lead finish in the substitute is not RoHS3 compliant.
Q: Can the 110-99-324-41-001000 be used in RoHS3-regulated applications?
A: No. The 110-99-324-41-001000 is RoHS non-compliant due to its tin-lead contact finish. Applications requiring RoHS3 compliance must use the ICO-324-STT or identify an alternative RoHS3-compliant substitute.
Q: Does the higher current rating of the substitute affect compatibility?
A: No. The 110-99-324-41-001000 is rated for 3 A compared to the ICO-324-STT's 1 A rating. Higher current capacity does not compromise compatibility; it provides additional performance margin. The substitute can safely handle applications designed for 1 A operation.
Q: Are there temperature range considerations when substituting?
A: The 110-99-324-41-001000 operates across -55°C to 125°C, exceeding the ICO-324-STT's -55°C to 105°C range. For applications operating within the original -55°C to 105°C specification, both parts are compatible. For applications requiring operation above 105°C, only the substitute supports the extended range.
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