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75853-402 Equivalent & Substitute Parts
Part Overview
The 75853-402 is a 21-position DIN connector receptacle manufactured by Amphenol ICC (FCI), designed for free-hanging in-line applications with IDC termination. This backplane connector features gold-plated contacts and operates across an industrial temperature range of -55°C to 125°C with a current rating of 1.5A per contact.
The 75853-402 is classified as obsolete. Locating equivalent substitute parts is necessary to support legacy system maintenance, ensure design continuity, and maintain supply chain reliability for applications currently utilizing this connector.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 75853-402 |
| Manufacturer | Amphenol ICC (FCI) |
| Category | Backplane Connectors |
| Connector Type | Receptacle |
| Number of Positions | 21 |
| Pitch | 0.100" (2.54mm) |
| Number of Rows | 3 |
| Mounting Type | Free Hanging (In-Line) |
| Termination | IDC |
| Contact Finish | Gold |
| Operating Temperature | -55°C ~ 125°C |
| Current Rating | 1.5A |
| Material Flammability Rating | UL94 V-0 |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the 75853-402 is determined by strict equivalence across the following critical parameters:
- Connector Configuration: 21-position receptacle with 3-row arrangement
- Contact Pitch: 0.100" (2.54mm) spacing
- Termination Method: IDC (Insulation Displacement Contact)
- Mounting Style: Free hanging in-line orientation
- Contact Material: Gold plating for corrosion resistance
- Electrical Performance: 1.5A current rating per contact
- Environmental Compliance: UL94 V-0 flammability rating
The substitute part BPS8B21FLD000L9LF meets all these core electrical and mechanical parameters, ensuring functional compatibility with applications designed for the 75853-402.
Parameter Comparison
| Parameter | 75853-402 (Main Part) | BPS8B21FLD000L9LF (Substitute) |
|---|---|---|
| Manufacturer | Amphenol ICC (FCI) | Amphenol ICC (FCI) |
| Connector Type | Receptacle | Receptacle, Female Sockets |
| Number of Positions | 21 | 21 |
| Pitch | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Number of Rows | 3 | 3 |
| Mounting Type | Free Hanging (In-Line) | Free Hanging (In-Line) |
| Termination | IDC | IDC |
| Contact Finish | Gold | Gold |
| Operating Temperature | -55°C ~ 125°C | -40°C ~ 125°C |
| Current Rating | 1.5A | 1.5A |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | RoHS Compliant |
Engineering Selection Recommendations
The BPS8B21FLD000L9LF is the manufacturer-recommended substitute for the obsolete 75853-402. Both connectors are manufactured by Amphenol ICC (FCI) and maintain electrical and mechanical equivalence across all critical parameters.
The substitute part offers the following advantages:
- Active Product Status: BPS8B21FLD000L9LF is currently in active production, ensuring long-term availability and supply chain stability.
- RoHS Compliance: The substitute meets RoHS requirements, supporting modern regulatory and procurement standards.
- Expanded Inventory: 1176 units are in stock compared to 798 units of the obsolete part.
- Temperature Range: The substitute operates across -40°C to 125°C, which covers the majority of industrial applications within the original -55°C to 125°C range.
For applications requiring the full -55°C lower temperature limit, the original 75853-402 specifications must be maintained.
Frequently Asked Questions (FAQ)
Q: Can BPS8B21FLD000L9LF be used as a direct replacement for 75853-402?
A: Yes. Both connectors share identical electrical and mechanical specifications: 21-position receptacle, 0.100" pitch, 3-row configuration, IDC termination, gold contacts, 1.5A current rating, and UL94 V-0 flammability rating. The substitute is the manufacturer-recommended equivalent.
Q: What is the difference in operating temperature range?
A: The 75853-402 operates from -55°C to 125°C, while BPS8B21FLD000L9LF operates from -40°C to 125°C. For applications requiring operation below -40°C, the original part specification must be maintained.
Q: Does the substitute part require any design modifications?
A: No. The BPS8B21FLD000L9LF maintains identical pitch, row configuration, mounting style, and termination method. No PCB layout or assembly process changes are required.
Q: What is the packaging difference?
A: The 75853-402 packaging is unspecified in available documentation. The BPS8B21FLD000L9LF is supplied in trays, which is standard for active production connectors.
Q: Is RoHS compliance a functional requirement for substitution?
A: RoHS compliance is a regulatory and procurement consideration, not a functional electrical parameter. The BPS8B21FLD000L9LF's RoHS compliance status supports modern supply chain requirements and environmental regulations.
Q: Are both parts from the same manufacturer?
A: Yes. Both the 75853-402 and BPS8B21FLD000L9LF are manufactured by Amphenol ICC (FCI), ensuring consistent design standards and quality control.
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