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Equivalent & Substitute Parts: 6S6/24V Incandescent Lamp
Part Overview
The 6S6/24V is an incandescent lamp manufactured by Visual Communications Company (VCC) designed for 24V applications requiring a clear, round domed-top lens with candelabra screw base. This component is classified as obsolete, making identification of equivalent substitute parts essential for system maintenance and component procurement.
The lamp operates at 24V with a mean spherical candle power (MSCP) rating of 4.3, providing consistent illumination for indicator and signal applications. Due to its obsolete status, sourcing equivalent alternatives from active manufacturers ensures supply chain continuity and long-term availability.
Substiute Parts
Key Parameters
| Parameter | Value | Significance for Substitution |
|---|---|---|
| Voltage Rating | 24V | Critical electrical parameter; substitute must match exactly |
| Lens Style | Round with Domed Top | Determines optical output and mechanical fit in housing |
| Lens Size | RS-6 | Specifies physical dimensions and socket compatibility |
| Lead Style | Candelabra Screw | Determines mechanical connection and base compatibility |
| Type | Incandescent | Defines lamp technology and operational characteristics |
| Color | Clear | Affects light transmission and visual appearance |
| MSCP (Mean Spherical Candle Power) | 4.3 | Specifies luminous intensity; substitute should match or exceed |
| RoHS Status | ROHS3 Compliant | Environmental and regulatory compliance requirement |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Storage and handling requirements |
Substitute Part Grouping Explanation
Substitute parts for the 6S6/24V are identified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:
Primary Matching Criteria:
- Voltage Rating: 24V (exact match required)
- Lens Size: RS-6 (physical and optical compatibility)
- Lead Style: Candelabra Screw (mechanical connection compatibility)
- Lens Style: Round with Domed Top (form factor and light distribution)
- Type: Incandescent (technology class)
- Color: Clear (optical transmission)
Secondary Compliance Criteria:
- RoHS3 Compliance (regulatory requirement)
- Moisture Sensitivity Level 1 (storage compatibility)
- ECCN and HTSUS classifications (trade compliance)
Substitute parts must satisfy all primary criteria to ensure direct functional and mechanical interchangeability. Secondary criteria confirm regulatory and compliance alignment.
Parameter Comparison
| Parameter | 6S6/24V (VCC) | 5219064 (Dialight) | Match Status |
|---|---|---|---|
| Manufacturer | Visual Communications Company | Dialight | Different |
| Voltage Rating | 24V | 24V | Match |
| Type | Incandescent | Incandescent | Match |
| Color | Clear | Clear | Match |
| Lens Style | Round with Domed Top | Round with Domed Top | Match |
| Lens Size | RS-6 | RS-6 | Match |
| Lead Style | Candelabra Screw | Candelabra Screw | Match |
| MSCP | 4.3 | Not specified | Comparable |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Match |
| MSL | 1 (Unlimited) | 1 (Unlimited) | Match |
| Product Status | Obsolete | Active | Substitute is active |
| ECCN | EAR99 | EAR99 | Match |
| HTSUS | 8539.29.3060 | 8539.29.3060 | Match |
Engineering Selection Recommendations
The Dialight 5219064 is a direct functional substitute for the obsolete VCC 6S6/24V based on complete parameter alignment across all critical electrical and mechanical specifications.
Substitution Basis:
The 5219064 matches the 6S6/24V in voltage rating (24V), lens configuration (RS-6 round domed top), base type (candelabra screw), lamp technology (incandescent), and optical color (clear). Both components maintain ROHS3 compliance and identical moisture sensitivity classification, ensuring regulatory and environmental compatibility.
The primary advantage of the 5219064 is its active product status, providing assured long-term availability and supply chain stability compared to the obsolete 6S6/24V. Both components share identical trade classification codes (ECCN: EAR99, HTSUS: 8539.29.3060), confirming export and import compliance alignment.
Inventory Consideration:
The 6S6/24V maintains 1,148 pieces in current stock, while the 5219064 substitute has 967 pieces available. Selection between these parts should prioritize immediate availability requirements against long-term supply assurance.
Frequently Asked Questions (FAQ)
Q: Can the Dialight 5219064 be used as a direct replacement for the VCC 6S6/24V?
A: Yes. The 5219064 matches all critical parameters: 24V voltage rating, RS-6 lens size, candelabra screw base, round domed-top lens style, clear color, and incandescent technology. Both components are ROHS3 compliant with identical moisture sensitivity levels.
Q: Why is the 6S6/24V classified as obsolete?
A: The 6S6/24V is listed as obsolete by the manufacturer. The Dialight 5219064 is an active product, ensuring continued availability and manufacturing support.
Q: Are there any differences in luminous intensity between these lamps?
A: The 6S6/24V specifies an MSCP rating of 4.3. The 5219064 MSCP specification is not provided in available documentation. Both lamps use identical RS-6 lens geometry and 24V incandescent technology, indicating comparable light output characteristics.
Q: Do both lamps use the same base type?
A: Yes. Both the 6S6/24V and 5219064 use candelabra screw bases, ensuring mechanical compatibility with existing sockets and fixtures.
Q: Are there any compliance or regulatory differences?
A: No. Both components are ROHS3 compliant, carry identical ECCN (EAR99) and HTSUS (8539.29.3060) classifications, and maintain MSL 1 (unlimited) moisture sensitivity ratings.
Q: Which part should be selected for new designs?
A: The Dialight 5219064 should be selected for new designs due to its active product status and assured long-term availability.
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