FR5365S LED RED CLEAR 5MM ROUND T/H Equivalent & Substitute Parts

Part Overview

The FR5365S is a red LED indication component manufactured by Stanley Electric Co, featuring a 5mm T-1 3/4 through-hole package with 626nm dominant wavelength and 1.9V forward voltage. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The FR5365S delivers 440mcd at 20mA test current with a 45° viewing angle and clear domed lens configuration.

Key Parameters

Parameter	FR5365S Value	Substitution Relevance
Color	Red	Critical - determines visual indication function
Lens Size	5mm, T-1 3/4	Critical - physical fit in PCB and housing
Mounting Type	Through Hole	Critical - assembly compatibility
Voltage - Forward (Vf) (Typ)	1.9V	Important - circuit design parameter
Current - Test	20mA	Important - operating point reference
Wavelength - Dominant	626nm	Important - color specification
Millicandela Rating	440mcd	Important - brightness level
Lens Transparency	Clear	Important - optical characteristics
Viewing Angle	45°	Secondary - application-dependent
Height (Max)	7.80mm	Secondary - mechanical clearance

Substitute Part Grouping Explanation

Substitution logic for the FR5365S is based on strict parameter matching within the red LED through-hole category. The following criteria determine substitutability:

Primary Matching Criteria (Non-Negotiable):

Color: Red
Lens Size: 5mm, T-1 3/4
Mounting Type: Through Hole
Lens Transparency: Clear
Package / Case: Radial

Secondary Matching Criteria (Allowable Variance):

Voltage - Forward (Vf): 1.7V to 2.1V range acceptable for circuit redesign
Current - Test: 10mA to 20mA operating range
Wavelength - Dominant: 620nm to 657nm red spectrum
Millicandela Rating: 10mcd to 1000mcd (application-dependent brightness)
Viewing Angle: 16° to 50° (application-dependent)
Height (Max): 6.35mm to 12.44mm (mechanical clearance dependent)

Excluded from Substitution:

Parts with diffused lens transparency (SLI-343URC3F excluded due to diffused vs. clear lens)
Parts with red-orange color designation (LTL-4294-012 excluded due to color specification)
Parts with different lens sizes or mounting types

Parameter Comparison

Part Number	Manufacturer	Color	Vf (Typ)	Current - Test	Wavelength - Dominant	mcd Rating	Viewing Angle	Height (Max)	Product Status
FR5365S	Stanley Electric Co	Red	1.9V	20mA	626nm	440mcd	45°	7.80mm	Obsolete
HLMP-3366	Broadcom Limited	Red	1.9V	10mA	626nm	13.8mcd	50°	6.35mm	Active
HLMP-C025-P0000	Broadcom Limited	Red	1.9V	20mA	626nm	1000mcd	25°	9.19mm	Active
HLMP-D155	Broadcom Limited	Red	1.7V	1mA	640nm	10mcd	24°	12.44mm	Active
LTL-4214	Lite-On Inc.	Red	2.1V	10mA	657nm	19mcd	16°	8.60mm	Active
LTL-4224-002	Lite-On Inc.	Red	2V	20mA	623nm	90mcd	16°	9.85mm	Active
MV8141A4R0	Everlight Electronics Co Ltd	Red	1.7V	20mA	—	370mcd	40°	8.90mm	Active
SLI-560UT3F	Rohm Semiconductor	Red	1.9V	20mA	630nm	1000mcd	40°	7.70mm	Not For New Designs
SLR-56VC3F	Rohm Semiconductor	Red	2V	10mA	630nm	25mcd	40°	8.90mm	Active

Engineering Selection Recommendations

Primary Substitute (Closest Match): HLMP-C025-P0000 (Broadcom Limited) matches the FR5365S across all primary criteria with identical 1.9V forward voltage and 20mA test current. This part is Active status with ROHS3 compliance and unlimited moisture sensitivity rating. The 1000mcd brightness represents a 127% increase over the original 440mcd specification, suitable for applications requiring enhanced visibility. The 25° viewing angle is narrower than the original 45°, requiring verification for directional indication requirements.

Secondary Substitute (Voltage-Compatible): SLI-560UT3F (Rohm Semiconductor) provides identical electrical parameters (1.9V, 20mA, 630nm wavelength) with 1000mcd brightness and 40° viewing angle. However, this part carries "Not For New Designs" status, limiting its use to legacy system maintenance and replacement applications only. The part remains in inventory with 34,674 units available.

Alternative for Low-Current Applications: HLMP-3366 (Broadcom Limited) operates at reduced current (10mA vs. 20mA) with identical 1.9V forward voltage and 626nm wavelength. The 13.8mcd brightness is significantly lower, suitable only for low-intensity indication applications. Active status and ROHS3 compliance support new design integration.

Alternative for Extended Wavelength Tolerance: LTL-4224-002 (Lite-On Inc.) operates at 2V forward voltage with 20mA test current and 623nm wavelength within acceptable red spectrum range. The 90mcd brightness and 16° viewing angle require circuit and mechanical verification. Active status with ROHS3 compliance supports production use.

Not Recommended for Direct Substitution:

HLMP-D155: 1.7V forward voltage and 1mA test current represent significant circuit redesign requirements
LTL-4214: 2.1V forward voltage and 10mA test current require circuit modification
MV8141A4R0: 1.7V forward voltage requires circuit redesign despite 370mcd brightness match
SLI-343URC3F: Diffused lens transparency differs from clear lens specification
LTL-4294-012: Red-orange color designation differs from red specification

Frequently Asked Questions (FAQ)

Q: Can HLMP-C025-P0000 replace FR5365S in existing designs without circuit modification?

A: HLMP-C025-P0000 maintains identical forward voltage (1.9V) and test current (20mA), allowing direct substitution in circuit topology. However, the increased brightness (1000mcd vs. 440mcd) and narrower viewing angle (25° vs. 45°) require verification against application requirements for visibility and directional indication.

Q: What is the difference between "Active" and "Not For New Designs" product status?

A: Active status indicates the manufacturer continues production and supports the component for new designs. "Not For New Designs" status indicates the manufacturer has discontinued active support, though existing inventory may remain available for legacy system maintenance. SLI-560UT3F carries this status despite technical compatibility.

Q: Why is SLI-343URC3F excluded as a substitute despite matching wavelength and brightness?

A: SLI-343URC3F features a diffused lens transparency versus the FR5365S clear lens specification. Diffused lenses scatter light omnidirectionally, while clear lenses provide focused indication. This optical difference makes the parts unsuitable for direct substitution in applications requiring specific light distribution characteristics.

Q: Can parts with 1.7V forward voltage (HLMP-D155, MV8141A4R0) substitute for the 1.9V FR5365S?

A: Parts with 1.7V forward voltage require circuit redesign to maintain proper operating current and brightness. The 0.2V difference affects series resistor calculations and may alter LED brightness characteristics. These parts are not direct substitutes without circuit modification.

Q: What mechanical considerations apply when selecting a substitute?

A: All substitute parts maintain the 5mm T-1 3/4 through-hole package and radial configuration, ensuring PCB footprint compatibility. Height variations (6.35mm to 12.44mm) require verification against mechanical clearance constraints in the application housing. The FR5365S height of 7.80mm falls within the middle range of available substitutes.

Q: Are there compliance differences between substitute options?

A: All active substitute parts (HLMP series, LTL-4224-002, MV8141A4R0, SLR-56VC3F) carry ROHS3 compliance certification. The FR5365S and SLI-560UT3F are REACH Unaffected. All parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, supporting equivalent regulatory treatment in procurement and export documentation.

Q: Which substitute offers the closest brightness match to the 440mcd FR5365S?

A: MV8141A4R0 provides 370mcd brightness at 20mA test current, representing the closest match at 84% of original brightness. However, this part requires 1.7V forward voltage circuit redesign. LTL-4224-002 offers 90mcd at 2V forward voltage, requiring both voltage and brightness compensation through circuit modification.

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