SLA560ECT3F Equivalent & Substitute Parts

Part Overview

The SLA560ECT3F is a blue-green 527nm LED indicator manufactured by Rohm Semiconductor, designed for discrete indication applications in through-hole configurations. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The SLA560ECT3F operates at 3.3V forward voltage with a 2000mcd brightness rating and features a 5mm T-1 3/4 clear lens with a 40° viewing angle.

Substiute Parts

SLA560ECT3F

Rohm SemiconductorIn Stock: 1130SLA560ECT3F Datasheet

Current PartRFQ

LTL2T3TGK6

Lite-On Inc.In Stock: 18541LTL2T3TGK6 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLA560ECT3F is determined by the following critical parameters:

• Lens Size and Mounting Type: Both the main part and substitute must use 5mm T-1 3/4 through-hole radial configuration to ensure mechanical compatibility with existing PCB layouts.
• Lens Style and Transparency: Clear, round domed-top lens required for optical consistency.
• Voltage and Current Ratings: Forward voltage (Vf) and test current must be compatible with existing circuit designs; minor variations (±0.2V) are acceptable within standard LED tolerance ranges.
• Wavelength Range: Dominant wavelength in the green-to-blue-green spectrum (525–527nm) maintains visual consistency for indication purposes.
• Compliance and Certifications: RoHS3 compliance and MSL rating ensure regulatory and environmental compatibility.

The LTL2T3TGK6 substitute meets these mechanical and electrical compatibility criteria while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The LTL2T3TGK6 is a suitable substitute for the obsolete SLA560ECT3F based on the following factors:

• Mechanical Compatibility: Identical lens size (5mm T-1 3/4), lens style (round domed top), and mounting type (through-hole radial) ensure direct PCB footprint compatibility.
• Electrical Compatibility: Forward voltage difference of 0.2V (3.3V vs. 4.6V) and identical test current (20mA) fall within standard LED circuit tolerance ranges. Circuit designs using current-limiting resistors will accommodate this variation.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring no additional environmental or regulatory constraints.
• Product Availability: The LTL2T3TGK6 is active in production with 18,518 units in stock, providing reliable supply continuity compared to the obsolete SLA560ECT3F.
• Optical Considerations: Wavelength shift from 527nm (blue-green) to 525nm (green) represents a 2nm difference within the green spectrum. The increased brightness (4500mcd vs. 2000mcd) and narrower viewing angle (30° vs. 40°) may affect visual perception in specific applications; circuit design review is recommended for brightness-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the LTL2T3TGK6 be used as a direct drop-in replacement for the SLA560ECT3F?

A: Yes, from a mechanical and electrical standpoint. Both parts share identical 5mm T-1 3/4 through-hole radial packaging, clear domed lenses, and compatible voltage/current ratings. The 0.2V forward voltage difference is within standard LED tolerance and will not cause circuit malfunction in typical current-limiting designs.

Q: What is the impact of the wavelength shift from 527nm to 525nm?

A: The 2nm shift moves the dominant wavelength from blue-green to pure green. This represents a minor color shift that may be perceptible in side-by-side comparison but is typically acceptable for general indication applications. Applications requiring specific color matching should conduct visual verification.

Q: Why is the LTL2T3TGK6 brighter (4500mcd vs. 2000mcd)?

A: The increased brightness is a characteristic of the Lite-On design. In applications where brightness is not a constraint, this provides improved visibility. In brightness-sensitive applications (e.g., low-light environments where glare is a concern), circuit designers may need to adjust current-limiting resistor values to reduce LED current below the 20mA test rating.

Q: Does the 1mm height difference (8.70mm vs. 7.70mm) affect PCB compatibility?

A: The 1mm height difference is within typical mechanical tolerance for through-hole LED applications and should not affect PCB layout or assembly. However, applications with strict height constraints should verify clearance with mechanical design specifications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant with MSL 1 (Unlimited) ratings, ensuring identical regulatory and environmental compliance.

Q: What is the significance of the narrower viewing angle (30° vs. 40°)?

A: The LTL2T3TGK6 has a more focused light distribution. This may reduce visibility from extreme angles but increases brightness in the forward direction. Applications requiring wide-angle visibility should evaluate whether the 30° angle meets operational requirements.