Dialight 5219946 LED Blue Clear 5MM T/H - Equivalent & Substitute Parts

Part Overview

The Dialight 5219946 is a blue 472nm LED indication component designed for through-hole mounting in discrete 3.8V applications. This part operates at 1010mcd with a 30° viewing angle and features a 5mm round domed lens. The 5219946 is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications.

Substiute Parts

5219946

DialightIn Stock: 11215219946 Datasheet

Current PartRFQ

5219946F

DialightIn Stock: 32525219946F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 5219946F serves as a direct substitute for the 5219946 based on identical electrical and optical parameters. Substitution is valid when the following criteria are met:

• Wavelength - Dominant: 472nm
• Wavelength - Peak: 470nm
• Voltage - Forward (Vf) Typical: 3.8V
• Current - Test: 20mA
• Millicandela Rating: 1010mcd
• Lens Size: 5.00mm Dia
• Lens Style: Round with Domed Top
• Viewing Angle: 30°
• Mounting Type: Through Hole
• Package / Case: Radial
• Supplier Device Package: 5mm

The 5219946F maintains all critical electrical and optical specifications while offering improved compliance status and active product availability.

Parameter Comparison

Engineering Selection Recommendations

The 5219946F is the direct equivalent for the obsolete 5219946. Selection of the 5219946F is supported by:

• Identical electrical specifications (3.8V forward voltage, 20mA test current)
• Identical optical specifications (472nm dominant wavelength, 1010mcd intensity, 30° viewing angle)
• Identical mechanical form factor (5mm through-hole radial package)
• Active product status ensuring continued availability
• ROHS3 compliance versus non-compliant status of the original part
• Minimal height variance (0.20mm reduction) within typical PCB design tolerances

Frequently Asked Questions (FAQ)

Q: Can the 5219946F directly replace the 5219946 in existing designs?

A: Yes. The 5219946F maintains identical electrical, optical, and mechanical specifications. The 0.20mm height reduction is within standard PCB design tolerances and does not affect form-fit-function compatibility.

Q: What is the primary advantage of using 5219946F over 5219946?

A: The 5219946F is an active product with ROHS3 compliance, whereas the 5219946 is obsolete and RoHS non-compliant. The 5219946F ensures long-term supply availability and regulatory compliance.

Q: Are there packaging differences between these parts?

A: The 5219946F is supplied in bulk packaging, while the 5219946 packaging specification is not defined. Both use identical 5mm radial through-hole packages.

Q: What parameters must remain constant for substitution?

A: Wavelength (472nm dominant, 470nm peak), forward voltage (3.8V), test current (20mA), intensity (1010mcd), lens size (5.00mm), viewing angle (30°), and mounting type (through-hole radial) must all remain constant for valid substitution.

Q: Is the height difference significant?

A: The 5219946F height is 8.70mm versus 8.90mm for the 5219946, a 0.20mm reduction. This difference is negligible for standard through-hole applications and does not affect electrical or optical performance.