Equivalent & Substitute Parts for 17-21VGC/TR8

Part Overview

The 17-21VGC/TR8 is a green LED indicator manufactured by Everlight Electronics Co Ltd, designed for surface mount applications in the 0805 (2012 Metric) package. This part operates at a forward voltage of 2.1V with a test current of 20mA, providing green light indication at 571nm dominant wavelength with 10mcd brightness. The part is currently in active production status with 34,669 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain optimization is required, or when design flexibility across multiple manufacturers is needed while maintaining electrical and mechanical compatibility.

Substiute Parts

17-21VGC/TR8

Everlight Electronics Co LtdIn Stock: 3475417-21VGC/TR8 Datasheet

Current PartRFQ

QTLP630C4TR

onsemiIn Stock: 6331QTLP630C4TR Datasheet

Parametric EquivalentRFQ

PY1112H-TR

Stanley Electric CoIn Stock: 19725PY1112H-TR Datasheet

SimilarRFQ

CMD17-21VGC/TR8

Visual Communications Company - VCCIn Stock: 3142CMD17-21VGC/TR8 Datasheet

Parametric EquivalentRFQ

SML-LX0805GC-TR

Lumex Opto/Components Inc.In Stock: 24862SML-LX0805GC-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 17-21VGC/TR8 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 0805 (2012 Metric)
• Mounting Type: Surface Mount
• Color: Green
• Voltage - Forward (Vf) (Typ): 2.1V ± 0.1V tolerance
• Current - Test: 20mA
• Millicandela Rating: 10mcd (±1mcd acceptable)
• Lens Transparency: Clear
• Viewing Angle: 140° minimum

Allowable Variation Parameters:

• Wavelength - Dominant: 570-572nm range
• Wavelength - Peak: 565-570nm range
• Height (Max): 0.90mm to 1.30mm
• Lens Size: 1.20mm x 1.25mm to 1.40mm x 1.25mm
• Product Status: Active or Obsolete (with inventory availability consideration)

The substitute parts listed below meet these criteria and are electrically and mechanically compatible with the 17-21VGC/TR8 in standard circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (Preferred for Direct Substitution):

CMD17-21VGC/TR8 (VCC) and SML-LX0805GC-TR (Lumex) are parametric equivalents with active product status. Both maintain identical electrical characteristics (2.1V forward voltage, 20mA test current, 10mcd brightness) and mechanical compatibility (0805 package, 140° viewing angle, clear lens). CMD17-21VGC/TR8 carries RoHS3 compliance with MSL 2 rating, while SML-LX0805GC-TR carries RoHS3 compliance with MSL 3 rating. Both are suitable for direct circuit substitution without design modification.

Parametric Equivalent with Obsolete Status:

QTLP630C4TR (onsemi) meets all electrical and mechanical parameters but carries obsolete product status. This part is suitable for substitution only when long-term supply continuity is not a design requirement. Inventory availability is limited at 6,300 units.

Similar Part with Optical Variation:

PY1112H-TR (Stanley Electric) operates at identical electrical parameters (2.1V, 20mA, 10mcd nominal brightness at 11.7mcd) but features a diffused lens instead of clear, resulting in wider viewing angles (151°, 156°). This part is suitable for applications where increased light diffusion is acceptable. Product status is obsolete with 19,700 units in inventory. Height is reduced to 0.90mm maximum, which may be advantageous in space-constrained designs.

Compliance Considerations:

All substitute parts carry EAR99 export classification and HTSUS code 8541.41.0000. RoHS3 compliance is confirmed for CMD17-21VGC/TR8, SML-LX0805GC-TR, and PY1112H-TR. REACH status is unaffected for all parts.

Frequently Asked Questions (FAQ)

Q: Can QTLP630C4TR be used as a long-term replacement for 17-21VGC/TR8?

A: QTLP630C4TR meets all electrical and mechanical parameters but carries obsolete product status. It is suitable for substitution in applications where immediate supply is available, but long-term design continuity should rely on active-status alternatives such as CMD17-21VGC/TR8 or SML-LX0805GC-TR.

Q: What is the difference between the clear lens 17-21VGC/TR8 and the diffused lens PY1112H-TR?

A: The 17-21VGC/TR8 features a clear lens with 140° viewing angle, providing focused light output. The PY1112H-TR features a diffused white lens with 151° and 156° viewing angles, distributing light over a wider area. Electrical parameters are identical. Selection depends on optical requirements of the application.

Q: Is the 2.2V forward voltage of SML-LX0805GC-TR compatible with circuits designed for 2.1V?

A: SML-LX0805GC-TR operates at 2.2V typical forward voltage compared to 2.1V for the 17-21VGC/TR8. This 0.1V difference is within acceptable tolerance for most LED indicator circuits. Circuit validation is required for applications with strict voltage regulation or current-limiting resistor calculations.

Q: Are all substitute parts available in Tape & Reel packaging?

A: CMD17-21VGC/TR8 and SML-LX0805GC-TR are supplied in Tape & Reel (TR) packaging. PY1112H-TR is supplied in Cut Tape (CT) and Digi-Reel packaging. QTLP630C4TR packaging format is not specified in available data. Confirm packaging requirements with supplier before procurement.

Q: What is the moisture sensitivity level (MSL) difference between these parts?

A: CMD17-21VGC/TR8 carries MSL 2 (1 Year), the most favorable rating. SML-LX0805GC-TR carries MSL 3 (168 Hours), and PY1112H-TR carries MSL 4 (72 Hours). Lower MSL ratings require shorter storage times and more controlled handling conditions. Selection should consider manufacturing environment and storage capabilities.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes, all substitute parts share identical 0805 (2012 Metric) package dimensions and surface mount footprints. Physical PCB layout compatibility is confirmed. Electrical circuit compatibility requires verification of forward voltage tolerance and current-limiting resistor values, particularly for SML-LX0805GC-TR at 2.2V.