Dialight 5977703602F Equivalent & Substitute Parts

Part Overview

The Dialight 5977703602F is an active, dual-color surface mount LED indicator in 1206 (3216 Metric) package format. This component provides independent green and red LED indication with clear lens optics, designed for discrete circuit applications requiring simultaneous or switchable color output. The part is ROHS3 compliant and maintains active product status with 672 units in current inventory. Substitute parts are identified to address packaging format preferences, inventory availability, or specific brightness requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

5977703602F

DialightIn Stock: 7415977703602F Datasheet

Current PartRFQ

LTST-C235KGKRKT

Lite-On Inc.In Stock: 205411LTST-C235KGKRKT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Dialight 5977703602F is determined by strict alignment of the following critical parameters:

• Package format: 1206 (3216 Metric) surface mount configuration
• Electrical characteristics: 2V forward voltage for both green and red emitters, 20mA test current
• Optical properties: Dominant wavelengths of 571nm (green) and 631nm (red), 130° viewing angle
• Physical dimensions: 3.20mm length, 1.60mm width, 1.10mm maximum height
• Lens specification: Colorless, clear transparency with rectangular flat-top geometry
• Regulatory compliance: ROHS3 and REACH requirements

The Lite-On Inc. LTST-C235KGKRKT meets all mandatory electrical, optical, and mechanical parameters. The primary difference is packaging format (Tape & Reel versus Strip) and brightness rating variance (35mcd/45mcd versus 45mcd/55mcd), which does not affect functional substitution in applications where the lower brightness specification is acceptable.

Parameter Comparison

Engineering Selection Recommendations

The Lite-On Inc. LTST-C235KGKRKT is a direct functional substitute for the Dialight 5977703602F based on matching electrical specifications, optical wavelengths, physical dimensions, and regulatory compliance status. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and safety standards.

Selection between these parts should be based on:

• Packaging requirement: Strip format (Dialight) versus Tape & Reel format (Lite-On)
• Brightness specification: Applications requiring 45mcd green and 55mcd red output should use the Dialight part; applications tolerant of 35mcd green and 45mcd red output may use the Lite-On substitute
• Inventory availability and lead time considerations
• Supplier qualification and procurement agreements

Both components share identical mounting characteristics, PCB footprint compatibility, and circuit interface requirements.

Frequently Asked Questions (FAQ)

Q: Can the Lite-On LTST-C235KGKRKT be used as a direct replacement for the Dialight 5977703602F on existing PCBs?

A: Yes. Both components use identical 1206 (3216 Metric) package geometry, mounting type, and electrical interface. PCB footprints and solder pad layouts are compatible. The primary consideration is brightness specification; the Lite-On part provides lower millicandela ratings.

Q: What is the difference between Strip and Tape & Reel packaging?

A: Strip packaging provides individual component units in a carrier strip format, suitable for manual handling and smaller quantity orders. Tape & Reel packaging provides components wound on continuous tape within a reel, optimized for automated pick-and-place assembly equipment and high-volume production. Both formats contain identical components.

Q: Are the optical wavelengths identical between these parts?

A: Yes. Both the Dialight 5977703602F and Lite-On LTST-C235KGKRKT provide identical dominant wavelengths (571nm green, 631nm red) and peak wavelengths (574nm green, 639nm red), ensuring consistent color appearance and optical performance.

Q: What does the brightness difference mean for circuit design?

A: The Dialight part provides 45mcd green and 55mcd red output. The Lite-On substitute provides 35mcd green and 45mcd red output. In applications where indicator visibility is critical or where brightness is specified in the design, the Dialight part should be used. In applications where lower brightness is acceptable, the Lite-On part functions identically from an electrical and optical wavelength perspective.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry identical Moisture Sensitivity Level (MSL) ratings of 3 (168 Hours), meeting current environmental and handling standards.

Q: What is the viewing angle specification?

A: Both components provide a 130° viewing angle, defining the cone of light emission from the LED indicator. This specification is identical across both parts.