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Molex 0878312428 Rectangular Connector Header - Equivalent & Substitute Parts
Part Overview
The Molex 0878312428 is an active rectangular connector header designed for board-to-board or cable applications. This through-hole mounted connector features 24 positions arranged in 2 rows with 0.079" (2.00mm) pitch spacing. The component is manufactured with shrouded 4-wall construction and solder termination, making it suitable for automotive, general purpose, and telecommunications applications. Finding equivalent substitute parts is necessary to ensure supply chain flexibility, optimize inventory management, and maintain design compatibility across manufacturing batches.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 0878312428 |
| Manufacturer | Molex |
| Category | Rectangular Connectors |
| Series | Milli-Grid 87831 |
| Connector Type | Header |
| Contact Type | Male Pin |
| Number of Positions | 24 |
| Number of Rows | 2 |
| Pitch - Mating | 0.079" (2.00mm) |
| Row Spacing - Mating | 0.079" (2.00mm) |
| Mounting Type | Through Hole |
| Shrouding | Shrouded - 4 Wall |
| Termination | Solder |
| Operating Temperature | -55°C ~ 105°C |
| Current Rating | 2A |
| Voltage Rating | 125V |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the Molex 0878312428 is determined by the following critical parameters:
Primary Matching Criteria:
- Connector type: Header
- Contact type: Male Pin
- Number of positions: 24
- Number of rows: 2
- Pitch - mating: 0.079" (2.00mm)
- Row spacing - mating: 0.079" (2.00mm)
- Mounting type: Through Hole
- Shrouding: Shrouded - 4 Wall
- Termination: Solder
Secondary Compatibility Parameters:
- Operating temperature range must encompass or match the original specification
- Contact material: Phosphor Bronze
- Insulation material compatibility with board assembly processes
- RoHS and regulatory compliance status
The Samtec Inc. LTMM-112-02-G-D meets all primary matching criteria and maintains compatibility across the specified electrical and mechanical parameters. Both parts are active products with ROHS3 compliance and identical pitch, position count, and row configuration.
Parameter Comparison
| Parameter | Molex 0878312428 | Samtec LTMM-112-02-G-D |
|---|---|---|
| Connector Type | Header | Header |
| Contact Type | Male Pin | Male Pin |
| Number of Positions | 24 | 24 |
| Number of Rows | 2 | 2 |
| Pitch - Mating | 0.079" (2.00mm) | 0.079" (2.00mm) |
| Row Spacing - Mating | 0.079" (2.00mm) | 0.079" (2.00mm) |
| Mounting Type | Through Hole | Through Hole |
| Shrouding | Shrouded - 4 Wall | Shrouded - 4 Wall |
| Termination | Solder | Solder |
| Contact Material | Phosphor Bronze | Phosphor Bronze |
| Contact Finish - Mating | Gold | Gold |
| Operating Temperature | -55°C ~ 105°C | -55°C ~ 125°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8536.69.4040 | 8536.69.4040 |
Engineering Selection Recommendations
Both the Molex 0878312428 and Samtec LTMM-112-02-G-D are active products with full ROHS3 compliance and REACH unaffected status. The Samtec substitute provides an extended operating temperature range of -55°C to 125°C compared to the Molex specification of -55°C to 105°C, offering additional thermal margin for demanding applications. Both connectors maintain identical electrical and mechanical specifications for mating pitch, position count, row configuration, and through-hole mounting requirements. Selection between these parts should be based on supply availability, lead time requirements, and application-specific thermal operating conditions.
Frequently Asked Questions (FAQ)
Q: Can the Samtec LTMM-112-02-G-D directly replace the Molex 0878312428 in existing designs?
A: Yes. Both connectors share identical mating pitch (0.079"), position count (24), row configuration (2 rows), mounting type (through hole), and shrouding (4 wall). The mechanical and electrical interfaces are compatible for board-level integration.
Q: What are the key differences between these two connectors?
A: The primary differences are the insulation material (Molex uses glass-filled polyamide; Samtec uses liquid crystal polymer), fastening type (Molex uses latch holder; Samtec uses push-pull), and operating temperature range (Samtec extends to 125°C versus Molex at 105°C). Contact length specifications also differ slightly between the two designs.
Q: Are both parts compliant with current regulatory requirements?
A: Yes. Both the Molex 0878312428 and Samtec LTMM-112-02-G-D are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS coding.
Q: What packaging format is available for these connectors?
A: Both connectors are supplied in tube packaging, suitable for automated assembly processes and standard component handling.
Q: Does the difference in contact finish thickness affect electrical performance?
A: Both connectors use gold plating on mating contacts with phosphor bronze base material. The specified finish thicknesses meet industry standards for connector reliability and conductivity in the 2A current rating application.
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