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Equivalent & Substitute Parts for A3B-4D-2C Rectangular Connector Housing
Part Overview
The A3B-4D-2C is a 4-position rectangular connector receptacle housing manufactured by Hirose Electric Co Ltd, designed for 2.00mm pitch applications with crimp termination. This part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications. Substitute parts must maintain identical electrical and mechanical specifications to ensure direct compatibility in existing designs.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Connector Type | Receptacle |
| Contact Type | Female Socket |
| Number of Positions | 4 |
| Pitch | 0.079" (2.00mm) |
| Number of Rows | 2 |
| Row Spacing | 0.079" (2.00mm) |
| Mounting Type | Free Hanging (In-Line) |
| Contact Termination | Crimp |
| Color | Black |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the A3B-4D-2C are qualified based on matching the following critical parameters:
- 4-position receptacle housing configuration
- 2.00mm pitch spacing
- 2-row arrangement with 2.00mm row spacing
- Female socket contact type
- Crimp termination method
- Free hanging (in-line) mounting
- Black color
- MSL 1 rating
Two active substitute parts meet these requirements: Molex 0511100450 (Milli-Grid 51110 series) and Amphenol ICC 69307-004LF (Minitek® MezzSelect™ series). Both maintain identical mechanical and electrical compatibility with the original A3B-4D-2C specification.
Parameter Comparison
| Parameter | A3B-4D-2C (Hirose) | 0511100450 (Molex) | 69307-004LF (Amphenol ICC) |
|---|---|---|---|
| Connector Type | Receptacle | Receptacle | Receptacle |
| Contact Type | Female Socket | Female Socket | Female Socket |
| Number of Positions | 4 | 4 | 4 |
| Pitch | 0.079" (2.00mm) | 0.079" (2.00mm) | 0.079" (2.00mm) |
| Number of Rows | 2 | 2 | 2 |
| Row Spacing | 0.079" (2.00mm) | 0.079" (2.00mm) | 0.079" (2.00mm) |
| Mounting Type | Free Hanging (In-Line) | Free Hanging (In-Line) | Free Hanging (In-Line) |
| Contact Termination | Crimp | Crimp | Crimp |
| Color | Black | Black | Black |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active | Active |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | RoHS Compliant |
Engineering Selection Recommendations
Both substitute parts are active products with current manufacturing support, addressing the obsolescence status of the A3B-4D-2C. The Molex 0511100450 carries ROHS3 compliance with REACH unaffected status. The Amphenol ICC 69307-004LF maintains RoHS compliance with REACH unaffected status. Selection between these two substitutes should be based on supply chain availability, existing vendor relationships, and specific application requirements within your design constraints. Both parts are electrically and mechanically equivalent to the original specification.
Frequently Asked Questions (FAQ)
Q: Can the Molex 0511100450 or Amphenol ICC 69307-004LF be used as direct replacements for the A3B-4D-2C?
A: Yes. Both substitute parts match all critical electrical and mechanical parameters, including pitch, position count, row configuration, contact type, and termination method. Direct substitution is supported without design modification.
Q: What is the difference between the two substitute parts?
A: The Molex 0511100450 belongs to the Milli-Grid 51110 series with polyester glass-filled insulation material. The Amphenol ICC 69307-004LF belongs to the Minitek® MezzSelect™ series with polyamide (PA66) nylon 6/6 glass-filled insulation material. Both operate across -40°C to 105°C temperature range and maintain identical mechanical compatibility.
Q: Are there packaging differences between these substitutes?
A: Both substitute parts are supplied in bulk packaging. Verify specific packaging requirements with your supplier for order quantities and delivery formats.
Q: What compliance certifications apply to these substitutes?
A: The Molex 0511100450 is ROHS3 compliant and REACH unaffected. The Amphenol ICC 69307-004LF is RoHS compliant and REACH unaffected. Both maintain MSL 1 rating.
Q: Do these substitute parts include contacts?
A: No. All three parts (original and substitutes) are connector housings only. Contacts must be sourced separately and are not included with the housing.
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