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ICO-308-NGT Equivalent & Substitute Parts
Part Overview
The ICO-308-NGT is an 8-position DIP socket manufactured by Samtec Inc., designed for through-hole mounting applications requiring low-profile screw machine construction. This socket accommodates 8-pin (2 x 4) integrated circuits with 0.3" row spacing and 0.100" pitch contacts. The part maintains active product status with 669 units in current inventory.
Substitute parts are identified to address supply chain continuity, inventory availability, or specific application requirements where equivalent electrical and mechanical parameters are maintained.
Substiute Parts
Key Parameters
| Parameter | Value | Specification Basis |
|---|---|---|
| Number of Positions | 8 (2 x 4) | DIP socket configuration |
| Row Spacing | 0.3" (7.62mm) | Standard DIP package dimension |
| Pitch - Mating | 0.100" (2.54mm) | Contact spacing requirement |
| Contact Finish - Mating | Gold | Electrical interface specification |
| Mounting Type | Through Hole | PCB assembly method |
| Operating Temperature Range | -55°C to 125°C | Environmental operating limits |
| Current Rating | 1 A (main part) | Maximum per-contact current capacity |
| Contact Material - Mating | Beryllium Copper | Spring contact composition |
| Termination | Solder | PCB connection method |
Substitute Part Grouping Explanation
Substitution eligibility for the ICO-308-NGT is determined by strict equivalence across the following critical parameters:
Mandatory Matching Parameters:
- Number of Positions: 8 (2 x 4)
- Row Spacing: 0.3" (7.62mm)
- Pitch - Mating: 0.100" (2.54mm)
- Contact Finish - Mating: Gold
- Contact Material - Mating: Beryllium Copper
- Mounting Type: Through Hole
- Operating Temperature Range: -55°C to 125°C
- Termination: Solder
The substitute part 115-93-308-41-003000 (Mill-Max Manufacturing Corp.) satisfies all mandatory matching parameters, establishing functional and mechanical interchangeability for standard DIP socket applications.
Parameter Comparison
| Parameter | ICO-308-NGT (Samtec) | 115-93-308-41-003000 (Mill-Max) | Compatibility Status |
|---|---|---|---|
| Manufacturer | Samtec Inc. | Mill-Max Manufacturing Corp. | Different manufacturer |
| Number of Positions | 8 (2 x 4) | 8 (2 x 4) | Equivalent |
| Row Spacing | 0.3" (7.62mm) | 0.3" (7.62mm) | Equivalent |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) | Equivalent |
| Contact Finish - Mating | Gold | Gold | Equivalent |
| Contact Finish Thickness - Mating | 30.0µin (0.76µm) | 30.0µin (0.76µm) | Equivalent |
| Contact Material - Mating | Beryllium Copper | Beryllium Copper | Equivalent |
| Mounting Type | Through Hole | Through Hole | Equivalent |
| Features | Open Frame | Open Frame | Equivalent |
| Termination | Solder | Solder | Equivalent |
| Pitch - Post | 0.100" (2.54mm) | 0.100" (2.54mm) | Equivalent |
| Contact Finish - Post | Tin | Tin-Lead | Different finish composition |
| Contact Finish Thickness - Post | 10.0µin (0.25µm) | 200.0µin (5.08µm) | Different thickness |
| Contact Material - Post | Brass | Brass Alloy | Similar material class |
| Housing Material | Polyester, Glass Filled | Polycyclohexylenedimethylene Terephthalate (PCT), Polyester | Different polymer composition |
| Operating Temperature | -55°C to 125°C | -55°C to 125°C | Equivalent |
| Material Flammability Rating | UL94 V-0 | Not specified | Main part rated; substitute not specified |
| Current Rating (Amps) | 1 A | 3 A | Substitute rated higher |
| Contact Resistance | 10mOhm | Not specified | Main part specified; substitute not specified |
| RoHS Status | ROHS3 Compliant | RoHS non-compliant | Different compliance status |
| Product Status | Active | Active | Both active |
| Inventory | 669 Pcs | 942 Pcs | Both in stock |
Engineering Selection Recommendations
ICO-308-NGT Selection Criteria:
- Required for applications mandating ROHS3 compliance
- Specified UL94 V-0 flammability rating required
- Tin post finish preferred for specific soldering processes
- Lower current rating (1 A) sufficient for application requirements
115-93-308-41-003000 Selection Criteria:
- Applications where RoHS compliance is not required
- Higher current rating (3 A) accommodates higher per-contact current demands
- Tin-Lead post finish acceptable for legacy or non-RoHS applications
- PCT housing material provides alternative polymer composition
- Greater inventory availability (942 units vs. 669 units)
Both parts maintain electrical and mechanical interchangeability for standard 8-position DIP socket applications with identical mating contact specifications, row spacing, and operating temperature range. Selection between these parts depends on regulatory compliance requirements, current capacity needs, and post finish specifications for the target application.
Frequently Asked Questions (FAQ)
Q: Can 115-93-308-41-003000 be used as a direct replacement for ICO-308-NGT in RoHS-compliant applications?
A: No. The 115-93-308-41-003000 is RoHS non-compliant, while the ICO-308-NGT is ROHS3 compliant. Applications requiring RoHS compliance must use the ICO-308-NGT.
Q: What is the significance of the different post finish specifications (Tin vs. Tin-Lead)?
A: The ICO-308-NGT uses pure Tin post finish (10.0µin thickness), while the 115-93-308-41-003000 uses Tin-Lead finish (200.0µin thickness). Post finish affects soldering characteristics and compatibility with specific PCB assembly processes. Tin-Lead finishes are associated with legacy manufacturing processes, while pure Tin finishes align with modern RoHS requirements.
Q: Are these sockets mechanically interchangeable on a PCB?
A: Yes. Both sockets share identical mechanical specifications: 8-position (2 x 4) DIP configuration, 0.3" row spacing, 0.100" mating pitch, through-hole mounting, and open frame design. PCB footprints are identical.
Q: Why does the 115-93-308-41-003000 have a higher current rating (3 A vs. 1 A)?
A: The higher current rating reflects the contact design and material specifications of the Mill-Max part. However, this parameter is not a limiting factor for substitution; it indicates the substitute part can handle equal or greater current demands than the original part.
Q: What is the difference in housing material between these parts?
A: The ICO-308-NGT uses Polyester with glass filler, while the 115-93-308-41-003000 uses Polycyclohexylenedimethylene Terephthalate (PCT) with Polyester. Both are thermoplastic materials suitable for DIP socket applications. The ICO-308-NGT specifies UL94 V-0 flammability rating; the substitute does not specify a rating.
Q: Can I use the 115-93-308-41-003000 in applications requiring UL94 V-0 certification?
A: No. The ICO-308-NGT explicitly specifies UL94 V-0 flammability rating. The 115-93-308-41-003000 does not provide this certification. Applications requiring UL94 V-0 compliance must use the ICO-308-NGT.
Q: Are the mating contact specifications identical between these parts?
A: Yes. Both parts use Beryllium Copper mating contacts with Gold finish (30.0µin thickness) and 0.100" pitch. Mating contact specifications are fully equivalent.
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