Equivalent & Substitute Parts for 19-21VGC/TR8

Part Overview

The 19-21VGC/TR8 is a yellow-green 571nm LED indication component manufactured by Everlight Electronics Co Ltd, designed for discrete surface mount applications in the 0603 (1608 Metric) package format. This part operates at a forward voltage of 2V with a test current of 20mA and delivers 12.5mcd luminous intensity through a clear, rectangular lens with a 100° viewing angle. The component is currently in active production status with substantial inventory availability (117,300 pcs). Substitute parts become necessary when the primary part experiences supply constraints, when design requirements permit alternative optical or electrical characteristics within acceptable tolerances, or when packaging format changes are acceptable for manufacturing optimization.

Substiute Parts

19-21VGC/TR8

Everlight Electronics Co LtdIn Stock: 11738819-21VGC/TR8 Datasheet

Current PartRFQ

PY1111C-TR

Stanley Electric CoIn Stock: 78007PY1111C-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 19-21VGC/TR8 is determined by the following critical parameters: package format (0603/1608 Metric), mounting type (Surface Mount), forward voltage tolerance (2V nominal), test current (20mA), and wavelength range (570-572nm). The identified substitute PY1111C-TR from Stanley Electric Co meets the core mechanical and electrical compatibility criteria: identical package dimensions (1.60mm L x 0.80mm W), surface mount configuration, compatible forward voltage (2.1V, within acceptable tolerance), matching test current (20mA), and wavelength within the yellow-green spectrum (572nm dominant, 570nm peak). Differences in lens transparency (diffused vs. clear), millicandela rating (11.7mcd vs. 12.5mcd), viewing angle (146° vs. 100°), and product status (Obsolete vs. Active) represent trade-offs that must be evaluated against specific application requirements. The substitute part is available in Cut Tape packaging rather than Tape & Reel format.

Parameter Comparison

Engineering Selection Recommendations

The 19-21VGC/TR8 remains the primary selection for new designs due to its active product status and established supply chain. The PY1111C-TR substitute is suitable only when the 19-21VGC/TR8 becomes unavailable and the application tolerates the following deviations: forward voltage increase of 0.1V (2V to 2.1V), luminous intensity reduction of 0.8mcd (12.5mcd to 11.7mcd), lens transparency change from clear to diffused, viewing angle expansion from 100° to 146°, and height reduction from 1.00mm to 0.80mm. The substitute's obsolete status indicates limited future availability and potential supply discontinuation. Both parts share identical package dimensions, mounting type, and test current specifications, ensuring mechanical compatibility on printed circuit boards. The forward voltage differential requires circuit design verification to confirm acceptable operation within the application's current-limiting resistor network. The diffused lens characteristic alters light distribution patterns compared to the clear lens of the primary part.

Frequently Asked Questions (FAQ)

Q: Can PY1111C-TR be used as a direct replacement for 19-21VGC/TR8 without circuit modification?

A: Mechanical and package compatibility is confirmed (0603/1608 Metric, Surface Mount, identical footprint). However, the forward voltage difference (2V vs. 2.1V) requires verification that the circuit's current-limiting resistor accommodates the 0.1V increase. The diffused lens alters optical characteristics compared to the clear lens.

Q: What are the critical parameters that determine substitution eligibility?

A: Package format (0603/1608 Metric), mounting type (Surface Mount), forward voltage range (2V to 2.1V acceptable), test current (20mA), wavelength range (570-572nm), and lens style (Rectangle with Flat Top). Deviations in millicandela rating, viewing angle, and lens transparency represent application-specific trade-offs.

Q: Why is the substitute part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. This limits future availability and may result in supply constraints or price volatility. The 19-21VGC/TR8 (Active status) is the recommended choice for designs requiring long-term component availability.

Q: How does the diffused lens of PY1111C-TR differ from the clear lens of 19-21VGC/TR8?

A: The clear lens provides direct light transmission with defined intensity distribution. The diffused lens scatters light over a broader area, resulting in lower peak intensity but wider light distribution. The PY1111C-TR's 146° viewing angle versus the 19-21VGC/TR8's 100° angle reflects this optical difference.

Q: Are there packaging format considerations when using PY1111C-TR?

A: The 19-21VGC/TR8 is supplied in Tape & Reel (TR) format suitable for automated assembly. The PY1111C-TR is supplied in Cut Tape (CT) format, which may require different handling procedures and is less suitable for high-volume automated pick-and-place operations.

Q: What compliance certifications apply to both parts?

A: Both parts are classified under ECCN EAR99 and HTSUS 8541.41.0000. The PY1111C-TR carries RoHS3 compliance, MSL 4 (72 Hours) moisture sensitivity rating, and REACH Unaffected status. Compliance documentation for the 19-21VGC/TR8 should be verified with the manufacturer.