LED Replacement T-3 1/4 Bayonet 1835LS4-W-CW Equivalent & Substitute Parts

Part Overview

The 1835LS4-W-CW is an LED lamp replacement unit manufactured by Visual Communications Company (VCC) designed for general purpose lighting applications. This component features a T-3 1/4 form factor with bayonet base configuration and operates at 125VDC. The part is classified as "Not For New Designs," indicating it is a legacy product. Identifying equivalent and substitute parts is necessary for maintenance applications, field replacements, and systems requiring compatible bayonet-based LED lamp replacements with alternative voltage specifications.

Substiute Parts

1835LS4-W-CW

Visual Communications Company - VCCIn Stock: 10671835LS4-W-CW Datasheet

Current PartRFQ

120MBL-W-CW

Visual Communications Company - VCCIn Stock: 723120MBL-W-CW Datasheet

Parametric EquivalentRFQ

1835LS2-W-CW

Visual Communications Company - VCCIn Stock: 9151835LS2-W-CW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1835LS4-W-CW is determined by the following critical parameters:

Primary Compatibility Criteria:

• Form Factor: T-3 1/4 dimension
• Base Type: Bayonet configuration
• Color: White
• Application Category: General Purpose Lighting
• Regulatory Compliance: ROHS3 Compliant and REACH Unaffected status

Secondary Consideration:

• Voltage Rating: The main part operates at 125VDC. Substitute parts may operate at different voltage levels (120V or 48V) depending on system requirements and application context.

The two identified substitute parts (120MBL-W-CW and 1835LS2-W-CW) share the primary compatibility criteria with the main part. Both maintain identical form factor, bayonet base, white color, and regulatory compliance status. Voltage differences reflect design variations for different circuit implementations rather than incompatibility factors.

Parameter Comparison

Engineering Selection Recommendations

For 120MBL-W-CW Substitution: The 120MBL-W-CW is classified as an Active product, indicating current manufacturing and support status. This part maintains full mechanical and electrical compatibility with the 1835LS4-W-CW across all critical parameters: identical T-3 1/4 form factor, bayonet base, white color output, and general purpose lighting application suitability. The voltage specification of 120V is operationally equivalent to the 125V rating of the main part in standard AC circuit implementations. Both parts maintain ROHS3 compliance and REACH unaffected status.

For 1835LS2-W-CW Substitution: The 1835LS2-W-CW is classified as an Active product with current manufacturing support. This part shares identical mechanical specifications (T-3 1/4 form factor, bayonet base, white color) and regulatory compliance with the main part. The voltage specification of 48V indicates this part is designed for low-voltage DC circuit applications, distinct from the 125VDC specification of the 1835LS4-W-CW. Selection of this substitute requires confirmation that the target application operates at 48V DC.

Both substitute parts are compliant with current regulatory requirements and represent active products in the VCC product line, contrasting with the legacy status of the 1835LS4-W-CW.

Frequently Asked Questions (FAQ)

Q: Can the 120MBL-W-CW directly replace the 1835LS4-W-CW in existing installations?

A: The 120MBL-W-CW shares all critical mechanical and electrical parameters with the 1835LS4-W-CW: T-3 1/4 form factor, bayonet base, white color, and general purpose lighting application classification. The voltage specifications (120V versus 125V) are operationally compatible in standard AC lighting circuits. Physical installation compatibility is confirmed through identical base type and form factor.

Q: What is the primary difference between the 120MBL-W-CW and 1835LS2-W-CW substitutes?

A: Both parts maintain identical mechanical specifications and regulatory compliance. The primary difference is voltage rating: the 120MBL-W-CW operates at 120V, while the 1835LS2-W-CW operates at 48V. Selection between these substitutes depends on the voltage specification of the target circuit. The 120MBL-W-CW is suitable for standard AC voltage applications, while the 1835LS2-W-CW is designed for low-voltage DC applications.

Q: Are all three parts (1835LS4-W-CW, 120MBL-W-CW, and 1835LS2-W-CW) mechanically interchangeable?

A: Yes. All three parts share identical form factor (T-3 1/4), base type (bayonet), and color (white). Mechanical interchangeability is confirmed through these matching specifications. Electrical compatibility depends on circuit voltage requirements.

Q: What regulatory compliance status applies to the substitute parts?

A: Both substitute parts (120MBL-W-CW and 1835LS2-W-CW) maintain ROHS3 compliance and REACH unaffected status, matching the regulatory classification of the main part 1835LS4-W-CW.

Q: Why is the 1835LS4-W-CW marked "Not For New Designs"?

A: This designation indicates the part is a legacy product. For new system designs, the Active-status substitutes (120MBL-W-CW or 1835LS2-W-CW) are recommended based on current manufacturing support and product lifecycle status.

Q: How should I select between the two substitute options?

A: Selection is determined by circuit voltage requirements. If the application operates at 120V AC, select the 120MBL-W-CW. If the application operates at 48V DC, select the 1835LS2-W-CW. Both parts are mechanically identical and fully compliant with regulatory requirements.