SLR-56MC3F Equivalent & Substitute Parts

Part Overview

The SLR-56MC3F is a green LED indicator manufactured by Rohm Semiconductor, designed for through-hole applications in T-1 3/4 (5mm) form factor. This part operates at 2.1V forward voltage with a 40mcd brightness rating and 572nm dominant wavelength. The product is marked as Not For New Designs, making identification of functionally equivalent alternatives essential for ongoing production support and design flexibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	SLR-56MC3F
Manufacturer	Rohm Semiconductor
Color	Green
Lens Size	5mm, T-1 3/4
Lens Transparency	Clear
Voltage - Forward (Vf) (Typ)	2.1V
Current - Test	10mA
Millicandela Rating	40mcd
Wavelength - Dominant	572nm
Viewing Angle	40°
Mounting Type	Through Hole
Package / Case	Radial
RoHS Status	ROHS3 Compliant
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution eligibility for the SLR-56MC3F is determined by the following critical parameters:

Lens size and form factor (5mm, T-1 3/4 through-hole radial package)
Color (green)
Lens transparency (clear)
Forward voltage range (2.1V to 2.2V acceptable)
Test current compatibility (10mA to 20mA)
Wavelength range (559nm to 572nm dominant wavelength)
Viewing angle (15° to 45°)
Brightness rating (10.6mcd to 170mcd)

Parts are grouped as direct substitutes when they maintain the same physical package, electrical operating range, and optical characteristics within acceptable tolerances. Parts with obsolete status are included where electrical and mechanical compatibility is confirmed.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	Test Current	Millicandela	Wavelength (nm)	Viewing Angle	Height (Max)	Product Status	RoHS Status
SLR-56MC3F	Rohm Semiconductor	2.1V	10mA	40mcd	572	40°	8.90mm	Not For New Designs	ROHS3 Compliant
HLMP-3568	Broadcom Limited	2.1V	10mA	10.6mcd	569	40°	6.35mm	Active	ROHS3 Compliant
HLMP-C523-J0002	Broadcom Limited	2.2V	20mA	170mcd	570	25°	8.91mm	Active	ROHS3 Compliant
HLMP-C615-G0001	Broadcom Limited	2.2V	20mA	45mcd	559	15°	8.91mm	Active	ROHS3 Compliant
LTL-307GE-012	Lite-On Inc.	2.1V	20mA	60mcd	569	40°	9.85mm	Active	ROHS3 Compliant
LTL-4234-012	Lite-On Inc.	2.1V	20mA	60mcd	569	16°	9.85mm	Active	ROHS3 Compliant
LTL-5234	LITEON	2.1V	10mA	40mcd	569	44°	6.05mm	Active	ROHS3 Compliant
MV54152	onsemi	2.2V	10mA	15mcd	565	45°	6.35mm	Obsolete	Not Specified
MV5452	onsemi	2.2V	20mA	25mcd	562	35°	8.89mm	Obsolete	Not Specified
SSL-LX5063GT	Lumex Opto/Components Inc.	2.2V	20mA	100mcd	565	30°	6.00mm	Active	ROHS3 Compliant
SSL-LX5063GT-TR	Lumex Opto/Components Inc.	2.2V	20mA	100mcd	565	30°	6.00mm	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications currently using SLR-56MC3F, the following selection criteria apply:

Active Status Preference: Parts with Active product status are recommended for new procurement and ongoing production. HLMP-3568, HLMP-C523-J0002, HLMP-C615-G0001, LTL-307GE-012, LTL-4234-012, LTL-5234, SSL-LX5063GT, and SSL-LX5063GT-TR are all actively manufactured and supported.

Compliance Alignment: All recommended active substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the original part's regulatory standing.

Electrical Compatibility: Parts operating at 2.1V forward voltage with 10mA test current (HLMP-3568, LTL-307GE-012, LTL-5234) provide closest electrical match. Parts rated at 2.2V with 20mA test current (HLMP-C523-J0002, HLMP-C615-G0001, SSL-LX5063GT series) require circuit verification for current-limiting resistor adjustment.

Brightness Considerations: LTL-5234 matches the original 40mcd rating at identical electrical parameters. HLMP-3568 provides lower brightness (10.6mcd) suitable for reduced-intensity applications. HLMP-C523-J0002 and SSL-LX5063GT offer higher brightness (170mcd and 100mcd respectively) for applications requiring increased visibility.

Viewing Angle Trade-offs: HLMP-3568 and LTL-307GE-012 maintain the 40° viewing angle. HLMP-C615-G0001 and LTL-4234-012 provide narrower angles (15° and 16°) for focused indication. SSL-LX5063GT series offers 30° viewing angle as a middle option.

Obsolete Parts: MV54152 and MV5452 are obsolete and should not be selected for new designs or long-term production support, despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can HLMP-C523-J0002 directly replace SLR-56MC3F without circuit modification?

A: HLMP-C523-J0002 operates at 2.2V forward voltage with 20mA test current, compared to SLR-56MC3F at 2.1V and 10mA. Direct substitution requires verification that the circuit's current-limiting resistor accommodates the higher test current. The brightness increase (170mcd vs. 40mcd) may also require optical design consideration.

Q: What is the difference between SSL-LX5063GT and SSL-LX5063GT-TR?

A: Both parts are electrically and optically identical. The primary difference is packaging: SSL-LX5063GT is supplied in bulk, while SSL-LX5063GT-TR is supplied on tape and reel. Selection depends on procurement and assembly requirements.

Q: Is LTL-5234 a suitable replacement for SLR-56MC3F?

A: Yes. LTL-5234 matches the original part's forward voltage (2.1V), test current (10mA), and brightness rating (40mcd). Wavelength differs slightly (569nm vs. 572nm), which is within acceptable green LED tolerance. The part is actively manufactured and ROHS3 compliant.

Q: Why do some substitutes have different viewing angles?

A: Viewing angle is determined by lens design and internal LED geometry. While SLR-56MC3F specifies 40°, substitutes range from 15° to 45°. Selection should match the application's optical requirements. Narrower angles concentrate light intensity; wider angles distribute it across a broader area.

Q: Can obsolete parts like MV5452 be used as substitutes?

A: MV5452 is electrically compatible but obsolete. Use is not recommended for new production or long-term applications due to unavailable supply and lack of ongoing manufacturer support. Active alternatives should be prioritized.

Q: What wavelength tolerance is acceptable for green LED substitution?

A: The SLR-56MC3F operates at 572nm dominant wavelength. Substitutes range from 559nm to 572nm, all within the green spectrum. Wavelength differences of ±10nm are typical within green LED category and do not affect functional compatibility in standard indication applications.

Q: How does brightness (millicandela) affect substitution suitability?

A: Brightness affects visibility but not electrical compatibility. SLR-56MC3F at 40mcd can be replaced with lower brightness (HLMP-3568 at 10.6mcd) for reduced-intensity applications or higher brightness (SSL-LX5063GT at 100mcd) for increased visibility. Circuit design and optical housing determine whether brightness adjustment is acceptable.

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