EFA5366X Orange LED 5MM Round Through-Hole Equivalent & Substitute Parts

Part Overview

The EFA5366X is a 5mm round through-hole orange LED indicator manufactured by Stanley Electric Co, designed for discrete indication applications. This component features a 605nm dominant wavelength with 1.9V forward voltage and 5000mcd brightness rating. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and new production requirements.

Substiute Parts

EFA5366X

Stanley Electric CoIn Stock: 1117EFA5366X Datasheet

Current PartRFQ

383-2USOC/S400-A6

Everlight Electronics Co LtdIn Stock: 822383-2USOC/S400-A6 Datasheet

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383-2USOC/S400-A7

Everlight Electronics Co LtdIn Stock: 1065383-2USOC/S400-A7 Datasheet

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383-2USOC/S400-A8

Everlight Electronics Co LtdIn Stock: 688383-2USOC/S400-A8 Datasheet

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HLMP-EJ37-R0PDD

Broadcom LimitedIn Stock: 1062HLMP-EJ37-R0PDD Datasheet

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SLI-580DT3F

Rohm SemiconductorIn Stock: 1963SLI-580DT3F Datasheet

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SLI-580YT3F

Rohm SemiconductorIn Stock: 1504SLI-580YT3F Datasheet

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WP7113SET

KingbrightIn Stock: 1062WP7113SET Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EFA5366X is determined by the following critical parameters:

Primary Compatibility Criteria:

• Lens size: 5mm, T-1 3/4 form factor
• Mounting type: Through-hole radial configuration
• Color: Orange indication
• Forward voltage range: 1.9V to 2.0V (within typical circuit tolerance)
• Test current: 20mA standard
• Package type: Radial through-hole

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (Wavelength 605-609nm): Parts with matching wavelength characteristics (605-609nm dominant wavelength) and identical forward voltage (1.9V). These parts maintain the same color perception and circuit compatibility as the original EFA5366X.

Category B - Functional Alternatives (Wavelength 615nm, Higher Brightness): Parts with shifted wavelength (615nm dominant) and slightly elevated forward voltage (2.0V). These parts provide orange indication with enhanced brightness ratings (10000mcd to 16000mcd) and are suitable for applications where increased luminous intensity is acceptable within the circuit design parameters.

Excluded from Substitution: SLI-580YT3F is excluded due to yellow color (587nm wavelength), which differs from the orange specification of the EFA5366X.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Electrical and Optical Equivalence):

SLI-580DT3F (Rohm Semiconductor) provides the closest electrical match to EFA5366X with identical 605nm dominant wavelength, 1.9V forward voltage, 5000mcd brightness, and 10° viewing angle. This part is ROHS3 compliant and carries active product status with 1902 units in stock. The 8.70mm maximum height is within acceptable tolerance of the original 8.80mm specification.

For Enhanced Brightness Applications:

The Everlight Electronics 383-2USOC/S400-A6, 383-2USOC/S400-A7, and 383-2USOC/S400-A8 series offer increased brightness ratings (10000mcd, 12500mcd, and 16000mcd respectively) with 615nm wavelength and 2.0V forward voltage. These parts are suitable for applications requiring higher luminous intensity while maintaining orange color indication. All three variants are ROHS3 compliant with active product status.

For Narrow Viewing Angle Applications:

The Everlight Electronics 383-2USOC/S400 series provides 6° viewing angle compared to the EFA5366X 10° specification, suitable for applications requiring concentrated light output in a specific direction.

For Wide Viewing Angle Applications:

WP7113SET (Kingbright) offers 20° viewing angle with 2200mcd brightness, suitable for applications requiring broader light distribution. This part features 601nm dominant wavelength and 2.0V forward voltage with ROHS3 compliance and active product status.

Compliance Considerations:

All recommended substitute parts carry ROHS3 compliance and REACH Unaffected status, matching or exceeding the environmental standards of the original EFA5366X. All parts are classified under HTSUS 8541.41.0000 and ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can I use 383-2USOC/S400-A6 as a direct replacement for EFA5366X?

A: 383-2USOC/S400-A6 is functionally compatible but not electrically identical. The forward voltage is 2.0V versus 1.9V, and the dominant wavelength is 615nm versus 605nm. The brightness is doubled at 10000mcd. These differences are within acceptable substitution parameters for orange LED indication applications. Circuit design must accommodate the 0.1V voltage difference and verify that the increased brightness does not cause optical interference in the application.

Q: What is the difference between the three Everlight 383-2USOC/S400 variants?

A: The three variants differ only in brightness rating: 383-2USOC/S400-A6 provides 10000mcd, 383-2USOC/S400-A7 provides 12500mcd, and 383-2USOC/S400-A8 provides 16000mcd. All three share identical electrical characteristics (2.0V forward voltage, 20mA test current), wavelength (615nm), viewing angle (6°), and physical dimensions. Selection depends on the required brightness level for the specific application.

Q: Why is SLI-580YT3F not recommended as a substitute?

A: SLI-580YT3F is a yellow LED with 587nm dominant wavelength, which differs from the orange specification of EFA5366X. Although it shares identical electrical characteristics (1.9V forward voltage, 5000mcd brightness, 10° viewing angle), the color difference makes it unsuitable for applications requiring orange indication.

Q: How do I handle the forward voltage difference between EFA5366X (1.9V) and the Everlight 383-2USOC/S400 series (2.0V)?

A: The 0.1V difference is within typical circuit tolerance for LED indicator applications. If the circuit uses a current-limiting resistor, the resistor value may require adjustment to maintain the 20mA test current. Recalculate the resistor value using Ohm's law: R = (Supply Voltage - LED Forward Voltage) / LED Current. For example, if the original circuit used a 5V supply with EFA5366X (1.9V), the resistor would be (5V - 1.9V) / 20mA = 155Ω. With 383-2USOC/S400-A6 (2.0V), the resistor would be (5V - 2.0V) / 20mA = 150Ω.

Q: What is the significance of the viewing angle parameter in LED substitution?

A: Viewing angle determines the cone of light distribution from the LED. EFA5366X has a 10° viewing angle, meaning the brightness is concentrated within a 10° cone. Substitutes with narrower viewing angles (6° for Everlight series) concentrate light more intensely in a specific direction, while wider angles (20° for Kingbright WP7113SET) distribute light over a broader area. Selection depends on the application's optical requirements and the distance between the LED and the observer.

Q: Are all substitute parts RoHS compliant?

A: Yes, all recommended substitute parts carry ROHS3 compliance certification. The original EFA5366X does not specify RoHS status, but all active-status alternatives meet current environmental regulations.

Q: Can I use HLMP-EJ37-R0PDD as a substitute for EFA5366X?

A: HLMP-EJ37-R0PDD is electrically compatible with 1.98V forward voltage and 609nm dominant wavelength, closely matching the EFA5366X specifications. However, the brightness rating is significantly lower at 1700mcd compared to 5000mcd. This part is suitable only for applications where reduced brightness is acceptable. The viewing angle is not specified in the provided data, which may present a compatibility concern for applications with specific optical requirements.

Q: What inventory considerations should I account for when selecting a substitute?

A: Current inventory levels are: EFA5366X (1087 units), 383-2USOC/S400-A6 (773 units), 383-2USOC/S400-A7 (1036 units), 383-2USOC/S400-A8 (678 units), HLMP-EJ37-R0PDD (1003 units), SLI-580DT3F (1902 units), and WP7113SET (989 units). SLI-580DT3F offers the highest inventory availability. For long-term production planning, verify current stock levels with suppliers, as inventory quantities change continuously.

Q: What is the package difference between "Bulk" and "Tape & Box (TB)" packaging?

A: Bulk packaging indicates loose components typically supplied in bags or trays, suitable for high-volume manufacturing with automated pick-and-place equipment. Tape & Box (TB) packaging indicates components wound on tape reels and boxed, optimized for automated assembly line feeding. Both packaging types are compatible with standard through-hole assembly processes. Selection depends on manufacturing equipment capabilities and production volume requirements.