DB3804X LED Blue Clear 3MM T/H Equivalent & Substitute Parts

Part Overview

The DB3804X is a blue 470nm LED indication component manufactured by Stanley Electric Co, designed for through-hole mounting in discrete 3.5V applications. This part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and production continuity. The DB3804X features a 3mm T-1 round domed lens with 120mcd brightness rating and 50° viewing angle, suitable for standard indicator applications requiring blue wavelength illumination.

Substiute Parts

DB3804X

Stanley Electric CoIn Stock: 707DB3804X Datasheet

Current PartRFQ

5219918F

DialightIn Stock: 21185219918F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DB3804X is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Wavelength - Dominant: 470nm (blue spectrum)
• Voltage - Forward (Vf): 3.5V
• Current - Test: 20mA
• Mounting Type: Through Hole
• Lens Color: Colorless
• Lens Transparency: Clear
• Package / Case: Radial

Allowable Variation Parameters:

• Millicandela Rating: Substitute may exceed original specification
• Lens Size: Minor dimensional tolerance within 3mm T-1 standard
• Height (Max): Variation acceptable within PCB layout constraints
• Viewing Angle: 50° maintained
• Wavelength - Peak: Minor shift within blue spectrum acceptable

The substitute part 5219918F from Dialight meets all mandatory matching criteria while providing enhanced brightness (460mcd versus 120mcd) and improved product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The 5219918F from Dialight qualifies as a direct substitute for the DB3804X based on electrical and mechanical parameter alignment. Selection of the 5219918F provides the following engineering advantages:

Product Status: The 5219918F maintains Active product status, ensuring long-term availability and supply chain continuity compared to the Obsolete DB3804X.

Compliance: The 5219918F carries ROHS3 Compliant certification, meeting current regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 ECCN classification.

Electrical Compatibility: Forward voltage (3.5V), test current (20mA), and dominant wavelength (470nm) are identical, ensuring direct circuit compatibility without modification.

Mechanical Compatibility: Through-hole radial package configuration is identical. Height variation (6.35mm versus 5.40mm) is within standard PCB layout tolerance for indicator applications.

Performance Enhancement: The 5219918F provides 460mcd brightness versus 120mcd in the original part, delivering improved luminous intensity for the same electrical input.

Inventory Availability: 2108 pieces of 5219918F are in stock versus 665 pieces of DB3804X, supporting production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5219918F directly replace the DB3804X without circuit modification?

A: Yes. The 5219918F operates at identical forward voltage (3.5V) and test current (20mA) with matching dominant wavelength (470nm). No circuit redesign is required for electrical substitution.

Q: What is the significance of the millicandela rating difference (120mcd versus 460mcd)?

A: The 5219918F provides higher luminous intensity at the same electrical input. This enhancement improves indicator visibility without increasing power consumption. Applications requiring the original 120mcd specification can operate the 5219918F at reduced current if necessary.

Q: Are there PCB layout considerations due to height difference?

A: The 5219918F height is 6.35mm compared to 5.40mm for the DB3804X. This 0.95mm difference is within standard through-hole component tolerance. Verify clearance in the specific PCB layout, particularly for applications with height constraints.

Q: Does the 2.92mm lens diameter of the 5219918F affect compatibility?

A: The 2.92mm diameter is within the 3mm T-1 standard specification. Both parts use identical round domed lens geometry and clear colorless material. Mechanical fit in standard 3mm LED mounting holes is compatible.

Q: What compliance advantages does the 5219918F provide?

A: The 5219918F carries ROHS3 Compliant certification, meeting current environmental regulations. Both parts maintain REACH Unaffected status. The 5219918F supports modern supply chain compliance requirements.

Q: Is the 5219918F suitable for new design applications?

A: Yes. The Active product status of the 5219918F ensures availability for both replacement and new design applications. The Dialight 521 series provides long-term design continuity.