Dialight 5501104 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5501104 is a 5mm red LED circuit board indicator with through-hole mounting, designed for applications requiring a single red diffused light source at 1.8V and 2mA operating current. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The substitute parts listed maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

5501104

DialightIn Stock: 11345501104 Datasheet

Current PartRFQ

5501104F

DialightIn Stock: 21375501104F Datasheet

DirectRFQ

5611101050F

DialightIn Stock: 25725611101050F Datasheet

DirectRFQ

5611101100F

DialightIn Stock: 11515611101100F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5501104 is determined by strict equivalence across the following critical parameters:

• Color: Red
• Wavelength - Peak: 635nm
• Configuration: Single
• Operating Current: 2mA
• Millicandela Rating: 2mcd
• Viewing Angle: 50°
• Lens Type: Diffused
• Lens Style: Round with Domed Top
• Lens Size: 5mm, T-1 3/4
• Voltage Rating: 1.8V
• Mounting Type: Through Hole
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS Code: 8541.41.0000

All three substitute parts (5501104F, 5611101050F, and 5611101100F) meet these criteria and are therefore direct functional equivalents. The primary distinction between the main part and substitutes is product status: the original 5501104 is obsolete, while all substitutes maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are functionally equivalent to the Dialight 5501104 based on electrical and mechanical parameters. Selection between substitutes should be based on the following factors:

5501104F: Direct variant of the original 5501104, maintaining the 550 series designation. Offers active product status with ROHS3 compliance and adequate inventory availability.

5611101050F and 5611101100F: Both belong to the 561 series and provide active product status with ROHS3 compliance. These parts offer higher inventory levels, supporting long-term supply chain stability.

All substitute parts carry identical compliance certifications (REACH Unaffected, EAR99, HTSUS 8541.41.0000) and unlimited moisture sensitivity rating, ensuring compatibility with existing design requirements and regulatory frameworks.

Frequently Asked Questions (FAQ)

Q: Can the Dialight 5501104 be directly replaced with any of the listed substitutes?

A: Yes. All three substitute parts (5501104F, 5611101050F, 5611101100F) are direct functional equivalents. They maintain identical electrical specifications (1.8V, 2mA), optical characteristics (635nm peak wavelength, 50° viewing angle, 2mcd brightness), mechanical form factor (5mm T-1 3/4 through-hole), and compliance certifications.

Q: What is the difference between the 550 series (5501104F) and 561 series substitutes?

A: The 550 and 561 series designations reflect different product lines within Dialight's LED indicator portfolio. From an engineering perspective, the parts are electrically and mechanically identical. The series difference does not affect substitution eligibility or performance in the application.

Q: Are the substitute parts RoHS compliant?

A: Yes. All substitute parts (5501104F, 5611101050F, 5611101100F) are ROHS3 compliant. The original 5501104 does not specify RoHS status in the provided data.

Q: Does packaging differ between the main part and substitutes?

A: The original 5501104 is specified with "-" packaging notation. All substitute parts are supplied in Bulk packaging, which is standard for through-hole LED indicators and does not affect electrical or mechanical compatibility.

Q: Are there any supply chain considerations when selecting a substitute?

A: Inventory levels vary among the substitutes. The 5611101050F offers the highest inventory (2492 pcs), followed by 5501104F (2046 pcs) and 5611101100F (1050 pcs). For applications requiring long-term supply assurance, the 561 series parts provide superior availability.