Dialight 5530121 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The Dialight 5530121 is a 3mm bi-level LED circuit board indicator featuring integrated green and red LEDs in a single package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part delivers 16mcd green and 10mcd red output at 10mA operating current with through-hole right-angle mounting suitable for PCB integration in indicator applications.

Key Parameters

Parameter	Value
Manufacturer	Dialight
Series	553
Configuration	2 High (Bi-level)
Color	Green (x 1), Red (x 1)
Wavelength - Peak	563nm Green, 650nm Red
Current Rating	10mA
Millicandela Rating	16mcd Green, 10mcd Red
Voltage Rating	2.1V Green, 2V Red
Lens Type	Diffused, Tinted
Lens Style	Round with Domed Top
Lens Size	3mm, T-1
Mounting Type	Through Hole, Right Angle
Moisture Sensitivity Level	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.41.0000

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5530121 is determined by the following critical parameters:

Primary Substitution Criteria (Must Match):

Configuration: 2 High bi-level arrangement
Color: Green and Red LEDs
Wavelength - Peak: 563nm Green, 650nm Red
Current Rating: 10mA
Voltage Rating: 2.1V Green, 2V Red
Lens Type: Diffused, Tinted
Lens Style: Round with Domed Top
Lens Size: 3mm, T-1
Mounting Type: Through Hole, Right Angle

Secondary Substitution Criteria (Allowable Variation):

Millicandela Rating: Substitute parts may exceed the original 16mcd Green / 10mcd Red specification
Viewing Angle: Substitute parts may specify viewing angle where the original does not
Packaging: Bulk packaging acceptable for original strip/tube packaging
Product Status: Active status preferred over obsolete

The Dialight 5530112 series (base product number) and its variants meet all primary criteria and are direct functional equivalents. The Lumex SSF-LXH240GID is classified as a similar part due to differences in current rating and millicandela output, requiring application-level verification.

Parameter Comparison

Parameter	5530121 (Main)	5530112F	5530112006F	5530112010F	5530112202F	5530112206F	5530112212F	5530112216F	5530112306F	5530121F	SSF-LXH240GID
Manufacturer	Dialight	Dialight	Dialight	Dialight	Dialight	Dialight	Dialight	Dialight	Dialight	Dialight	Lumex
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Configuration	2 High	2 High	2 High	2 High	2 High	2 High	2 High	2 High	2 High	2 High	2 High
Color	Green, Red	Green, Red	Green, Red	Green, Red	Green, Red	Green, Red	Green, Red	Green, Red	Green, Red	Green, Red	Green, Red
Wavelength - Peak	563nm, 650nm	563nm, 650nm	563nm, 650nm	563nm, 650nm	563nm, 650nm	563nm, 650nm	563nm, 650nm	563nm, 650nm	563nm, 650nm	563nm, 650nm	565nm, 627nm
Current Rating	10mA	10mA	10mA	10mA	10mA	10mA	10mA	10mA	10mA	10mA	25mA Green, 30mA Red
Millicandela Rating	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	16mcd Green, 10mcd Red	30mcd Green, 30mcd Red
Voltage Rating	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.1V Green, 2V Red	2.2V Green, 2V Red
Viewing Angle	Not specified	45°	45°	45°	45°	45°	45°	45°	45°	Not specified	40°
Lens Type	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused, Tinted	Diffused
Lens Style	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top
Lens Size	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1	Not specified
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
HTSUS	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000	8541.41.0000

Engineering Selection Recommendations

Direct Substitutes (Dialight 5530112 Series):

The Dialight 5530112F, 5530112006F, 5530112010F, 5530112202F, 5530112206F, 5530112212F, 5530112216F, and 5530112306F are direct functional equivalents to the obsolete 5530121. All variants maintain identical electrical specifications (10mA current, 2.1V/2V voltage, 16mcd/10mcd output) and mechanical form factors (3mm T-1 through-hole right-angle mounting). These parts carry active product status and ROHS3 compliance, providing long-term design support and regulatory alignment. The 5530112F offers the highest inventory availability (85,300 units) and is the primary recommendation for new designs and production continuity.

Direct Substitute (Dialight 5530121F):

The Dialight 5530121F maintains the same base product number as the original 5530121 but with active product status. This part is electrically and mechanically identical to the original and carries ROHS3 compliance. With 15,819 units in stock, it provides immediate availability for direct replacement applications.

Similar Part (Lumex SSF-LXH240GID):

The Lumex SSF-LXH240GID shares the same bi-level green/red configuration, wavelength characteristics, and through-hole right-angle mounting. However, this part operates at higher current ratings (25mA green, 30mA red versus 10mA) and delivers increased luminous intensity (30mcd green/red versus 16mcd/10mcd). The SSF-LXH240GID is suitable only for applications where higher brightness is acceptable and circuit design accommodates the increased current draw. Wavelength deviation (565nm green, 627nm red) may affect color perception in color-critical applications.

Frequently Asked Questions (FAQ)

Q: Can I use the Dialight 5530112F as a direct replacement for the 5530121?

A: Yes. The 5530112F is a direct functional equivalent with identical electrical ratings (10mA, 2.1V green/2V red), optical output (16mcd green/10mcd red), and mechanical form factor (3mm T-1 through-hole right-angle). The primary difference is product status: 5530112F is active while 5530121 is obsolete. Both carry ROHS3 compliance and REACH unaffected status.

Q: What is the difference between the various 5530112 part numbers (006F, 010F, 202F, 206F, 212F, 216F, 306F)?

A: All 5530112 variants share identical electrical and optical specifications. The suffix designations (006F, 010F, 202F, etc.) represent internal Dialight manufacturing or packaging variants. From an engineering substitution perspective, all variants are functionally equivalent and interchangeable. Selection may be based on inventory availability or specific packaging requirements.

Q: Can I substitute the Lumex SSF-LXH240GID for the Dialight 5530121?

A: The Lumex SSF-LXH240GID is a similar part but not a direct equivalent. It operates at higher current (25mA green, 30mA red versus 10mA) and delivers higher brightness (30mcd green/red versus 16mcd/10mcd). Substitution requires circuit redesign to accommodate increased current draw and may alter visual appearance due to higher brightness. Wavelength differences (565nm green, 627nm red versus 563nm, 650nm) may affect color perception. Use only if application requirements support higher brightness and current specifications.

Q: Are all substitute parts ROHS3 compliant?

A: All Dialight 5530112 series variants and the Lumex SSF-LXH240GID carry ROHS3 compliance. The original 5530121 does not specify RoHS status. For applications requiring RoHS compliance, use any of the active substitute parts listed.

Q: What is the viewing angle difference between the original 5530121 and substitute parts?

A: The original 5530121 does not specify viewing angle. The Dialight 5530112 series specifies 45° viewing angle, and the Lumex SSF-LXH240GID specifies 40°. These differences are minor and do not affect functional substitution in standard indicator applications. Viewing angle becomes relevant only in applications requiring specific directional light distribution.

Q: Is packaging format (bulk versus strip/tube) a factor in substitution?

A: Packaging format does not affect electrical or mechanical compatibility. The original 5530121 packaging is not specified. All substitute parts are available in bulk packaging. For production assembly, bulk packaging is standard and compatible with automated pick-and-place equipment.

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