FR5366X LED RED CLEAR 5MM ROUND T/H Equivalent & Substitute Parts

Part Overview

The FR5366X is a red 5mm through-hole LED manufactured by Stanley Electric Co, designed for discrete indication applications. This component features a 626nm dominant wavelength, 1.9V forward voltage, and 1800mcd luminous intensity with a 10° viewing angle. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value
Manufacturer Part Number	FR5366X
Manufacturer	Stanley Electric Co
Description	LED RED CLEAR 5MM ROUND T/H
Product Status	Obsolete
Color	Red
Lens Transparency	Clear
Lens Size	5mm, T-1 3/4
Voltage - Forward (Vf) (Typ)	1.9V
Current - Test	20mA
Millicandela Rating	1800mcd
Viewing Angle	10°
Wavelength - Dominant	626nm
Wavelength - Peak	635nm
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	8.80mm

Substitute Part Grouping Explanation

Substitution logic for the FR5366X is based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Mounting Type: Through Hole (radial configuration)
Lens Size: 5mm diameter
Color: Red
Lens Transparency: Clear
Wavelength Range: 624nm to 626nm dominant wavelength
Forward Voltage: 1.9V to 2.0V
Test Current: 10mA to 20mA
Package Configuration: Radial

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (1.9V Forward Voltage) Parts with matching 1.9V forward voltage, 626nm wavelength, and T-1 3/4 package form. These include HLMP-3316, HLMP-3316-I0002, HLMP-3390, and HLMP-3750 from Broadcom Limited. These parts maintain electrical compatibility with the original FR5366X design parameters.

Category 2: Functional Alternatives (2.0V Forward Voltage) Parts with 2.0V forward voltage and 624nm wavelength from Everlight Electronics Co Ltd (383-2SURC series). These operate at slightly elevated voltage but maintain red spectrum wavelength and 5mm form factor. Luminous intensity varies across this series (2500mcd to 12500mcd).

Category 3: Lower Intensity Alternative (3.0V Forward Voltage) The Dialight 5219247F operates at 3.0V with significantly lower luminous intensity (60mcd) and wider viewing angle (35°). This part is suitable only for applications where lower brightness and wider viewing angle are acceptable.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	Wavelength - Dominant	mcd Rating	Viewing Angle	Current - Test	Height (Max)	Product Status	RoHS Status
FR5366X	Stanley Electric Co	1.9V	626nm	1800mcd	10°	20mA	8.80mm	Obsolete	Not Specified
383-2SURC/S400-A6	Everlight Electronics Co Ltd	2V	624nm	6300mcd	6°	20mA	8.90mm	Active	ROHS3 Compliant
383-2SURC/S400-A8	Everlight Electronics Co Ltd	2V	624nm	12500mcd	6°	20mA	8.90mm	Active	ROHS3 Compliant
383-2SURC/S530-A3	Everlight Electronics Co Ltd	2V	624nm	2500mcd	6°	20mA	8.90mm	Active	ROHS3 Compliant
383-2SURC/S530-A4	Everlight Electronics Co Ltd	2V	624nm	4000mcd	6°	20mA	8.90mm	Active	ROHS3 Compliant
383-2SURC/S530-A5	Everlight Electronics Co Ltd	2V	624nm	5000mcd	6°	20mA	8.90mm	Active	ROHS3 Compliant
5219247F	Dialight	3V	Not Specified	60mcd	35°	10mA	8.81mm	Active	ROHS3 Compliant
HLMP-3316	Broadcom Limited	1.9V	626nm	60mcd	35°	10mA	9.19mm	Active	ROHS3 Compliant
HLMP-3316-I0002	Broadcom Limited	1.9V	626nm	60mcd	35°	10mA	9.19mm	Active	ROHS3 Compliant
HLMP-3390	Broadcom Limited	1.9V	626nm	55mcd	24°	20mA	10.90mm	Active	ROHS3 Compliant
HLMP-3750	Broadcom Limited	1.9V	626nm	125mcd	24°	20mA	12.44mm	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Electrical Equivalence):

HLMP-3316 and HLMP-3316-I0002 from Broadcom Limited provide exact electrical matching to FR5366X with identical 1.9V forward voltage and 626nm wavelength. Both parts are ROHS3 compliant and carry active product status. HLMP-3316-I0002 is supplied in Cut Tape packaging, while HLMP-3316 is supplied in Bulk. These parts are suitable for designs requiring no circuit modification.

For Luminous Intensity Matching:

383-2SURC/S530-A5 from Everlight Electronics Co Ltd provides the closest luminous intensity match at 5000mcd (compared to FR5366X at 1800mcd). This part operates at 2V forward voltage and requires circuit adjustment. ROHS3 compliance and active product status support long-term availability.

For Voltage-Tolerant Designs:

HLMP-3390 and HLMP-3750 from Broadcom Limited maintain 1.9V forward voltage compatibility while offering different luminous intensity levels (55mcd and 125mcd respectively). Both are ROHS3 compliant with active status.

For Brightness-Reduced Applications:

HLMP-3316 operates at 60mcd with 35° viewing angle, suitable for applications where lower brightness and wider viewing angle are required while maintaining 1.9V electrical compatibility.

Not Recommended for Direct Substitution:

5219247F from Dialight operates at 3V forward voltage with significantly different electrical characteristics (60mcd, 35° viewing angle, 10mA test current). This part requires substantial circuit redesign and is suitable only for applications with different brightness and viewing angle requirements.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace FR5366X with HLMP-3316?

A: Yes. HLMP-3316 provides direct electrical equivalence with identical 1.9V forward voltage, 626nm wavelength, and T-1 3/4 package form. No circuit modification is required. Both parts are ROHS3 compliant. HLMP-3316 is currently in active production status with 5300 pieces in stock.

Q2: What is the difference between HLMP-3316 and HLMP-3316-I0002?

A: Both parts are electrically identical with 1.9V forward voltage, 626nm wavelength, and 60mcd luminous intensity. The primary difference is packaging: HLMP-3316 is supplied in Bulk, while HLMP-3316-I0002 is supplied in Cut Tape (CT). Select based on your assembly process requirements.

Q3: Why do Everlight 383-2SURC parts have higher forward voltage (2V vs 1.9V)?

A: The 383-2SURC series operates at 2V forward voltage, which is 0.1V higher than FR5366X. This requires circuit adjustment if used as a direct replacement. However, the 2V specification remains within typical LED operating tolerances for many applications. Verify your circuit design can accommodate this voltage difference.

Q4: Which substitute part has the closest luminous intensity to FR5366X (1800mcd)?

A: 383-2SURC/S530-A5 from Everlight provides 5000mcd, which is higher than the original 1800mcd. For lower intensity matching, HLMP-3390 provides 55mcd and HLMP-3316 provides 60mcd. Select based on your application's brightness requirements.

Q5: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The original FR5366X does not specify RoHS status. All active production alternatives meet current environmental compliance requirements.

Q6: Can I use 5219247F as a substitute for FR5366X?

A: 5219247F is not recommended as a direct substitute. It operates at 3V forward voltage (vs 1.9V), has significantly lower luminous intensity (60mcd vs 1800mcd), and requires 10mA test current (vs 20mA). This part is suitable only for applications with different electrical and optical requirements.

Q7: What is the viewing angle difference between FR5366X and substitute parts?

A: FR5366X has a 10° viewing angle. Broadcom HLMP-3316 and 5219247F offer 35° viewing angles (wider). Broadcom HLMP-3390 and HLMP-3750 offer 24° viewing angles. Everlight 383-2SURC series offers 6° viewing angles (narrower). Select based on your application's viewing angle requirements.

Q8: Which substitute part has the longest available inventory?

A: HLMP-3316-I0002 from Broadcom has 8900 pieces in stock. HLMP-3316 has 5300 pieces. For Everlight parts, 383-2SURC/S530-A5 has 901 pieces. Verify current inventory status with your supplier for production planning.

Q9: Can I use HLMP-3390 in place of FR5366X without circuit changes?

A: HLMP-3390 maintains the same 1.9V forward voltage as FR5366X, allowing direct electrical substitution. However, it has lower luminous intensity (55mcd vs 1800mcd) and different viewing angle (24° vs 10°). Use only if your application can tolerate these optical differences.

Q10: What packaging options are available for substitute parts?

A: Broadcom HLMP-3316 is available in Bulk packaging. HLMP-3316-I0002 is available in Cut Tape (CT). Everlight 383-2SURC series and Dialight 5219247F are supplied in Bulk. Select packaging based on your assembly process and volume requirements.

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