Dialight 5511309 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5511309 is a 3mm T-1 through-hole right-angle LED circuit board indicator featuring a single green diffused lens with domed top. Rated at 1.9V and 2mA, this component delivers 1.6mcd at a 60° viewing angle with a peak wavelength of 565nm. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct board-level substitution.

Substiute Parts

5511309

DialightIn Stock: 8705511309 Datasheet

Current PartRFQ

5511301F

DialightIn Stock: 8145511301F Datasheet

DirectRFQ

5511303F

DialightIn Stock: 18245511303F Datasheet

DirectRFQ

5511304F

DialightIn Stock: 22385511304F Datasheet

DirectRFQ

5511307010F

DialightIn Stock: 9315511307010F Datasheet

DirectRFQ

5511307F

DialightIn Stock: 21705511307F Datasheet

DirectRFQ

5511309F

DialightIn Stock: 33055511309F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5511309 is determined by strict equivalence across the following critical parameters:

• Electrical Specifications: Voltage rating (1.9V), current rating (2mA), and wavelength (565nm)
• Optical Characteristics: Millicandela rating (1.6mcd) and viewing angle (60°)
• Mechanical Form Factor: 3mm T-1 lens size, round with domed top, diffused and tinted lens type
• Mounting Configuration: Through-hole, right-angle orientation
• Environmental Compliance: MSL 1, REACH Unaffected, ECCN EAR99

All identified substitute parts maintain these parameters without deviation. The primary distinction among substitutes is product status: the main part (5511309) is obsolete, while all listed alternatives are active production components within the Dialight 551 series.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain complete electrical and mechanical equivalence to the Dialight 5511309. Selection among active alternatives should be based on the following factors:

Product Status: All substitute parts carry active production status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Compliance Certification: All substitute parts are ROHS3 compliant, whereas the original part does not specify RoHS status. This compliance upgrade is standard across the active 551 series portfolio.

Inventory Availability: Part 5511309F offers the highest current inventory (3256 Pcs), followed by 5511304F (2163 Pcs) and 5511307F (2105 Pcs). Inventory levels support immediate procurement without lead-time constraints.

Packaging: All substitutes are supplied in bulk packaging, consistent with standard distribution for this component category.

Direct substitution is permissible for any of the listed alternatives without circuit modification, as all parameters remain within the specified tolerance envelope.

Frequently Asked Questions (FAQ)

Q: Can I substitute the obsolete 5511309 with any of the listed active parts?

A: Yes. All listed substitute parts maintain identical electrical specifications (1.9V, 2mA), optical output (1.6mcd, 565nm peak wavelength), mechanical form factor (3mm T-1 through-hole right-angle), and environmental ratings. Direct board-level substitution is permissible without design modification.

Q: What is the difference between 5511309F and the original 5511309?

A: The primary difference is product status: 5511309 is obsolete, while 5511309F is an active production variant with ROHS3 compliance certification. Electrical and mechanical specifications are identical. The "F" designation indicates the active production variant within the 551 series.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts (5511301F, 5511303F, 5511304F, 5511307010F, 5511307F, 5511309F) carry ROHS3 compliance certification. The original obsolete part (5511309) does not specify RoHS status.

Q: Do the substitute parts have the same lens characteristics?

A: Yes. All substitutes feature identical lens specifications: 3mm T-1 size, round with domed top, diffused and tinted type. Optical performance (1.6mcd at 60° viewing angle) is maintained across all alternatives.

Q: Which substitute part should I select for new designs?

A: For new designs, select from any active substitute part. Part 5511309F is the direct active equivalent of the obsolete 5511309. For maximum inventory availability, 5511309F (3256 Pcs) or 5511304F (2163 Pcs) are recommended.

Q: Are there any electrical parameter differences among the substitutes?

A: No. All substitute parts are electrically identical: 1.9V forward voltage, 2mA rated current, 565nm peak wavelength, and 1.6mcd luminous intensity. They are fully interchangeable from an electrical standpoint.

Q: What is the MSL rating for these components?

A: All parts, including the original and all substitutes, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage or handling.