LTL-353CK-H4 Equivalent & Substitute Parts

Part Overview

The LTL-353CK-H4 is a red 638nm LED indication component manufactured by Lite-On Inc., designed for through-hole mounting applications. This part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance requirements. The LTL-353CKR-H4 serves as a parametric equivalent with identical electrical and mechanical specifications but maintains active product status.

Substiute Parts

LTL-353CK-H4

Lite-On Inc.In Stock: 732LTL-353CK-H4 Datasheet

Current PartRFQ

LTL-353CKR-H4

Lite-On Inc.In Stock: 689LTL-353CKR-H4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The LTL-353CKR-H4 qualifies as a parametric equivalent to the LTL-353CK-H4 based on strict alignment across all critical electrical and mechanical parameters. Substitution eligibility is determined by the following criteria:

• Identical wavelength specifications (dominant 638nm, peak 660nm)
• Matching forward voltage (1.8V typical)
• Identical test current (20mA)
• Equivalent luminous intensity (1000mcd)
• Identical viewing angle (12°)
• Matching lens geometry (5.00mm diameter, round domed top)
• Identical mounting configuration (through-hole radial)
• Matching physical height (8.80mm maximum)
• Identical package type (radial)
• Equivalent moisture sensitivity rating (MSL 1)

The primary distinction between these parts is product status: the main part is obsolete while the substitute maintains active status, and packaging differs (main part uses standard packaging while the substitute uses bulk packaging).

Parameter Comparison

Engineering Selection Recommendations

The LTL-353CKR-H4 is the appropriate selection for new designs and production continuity. This part maintains active product status from Lite-On Inc. and carries ROHS3 compliance certification, meeting current regulatory requirements. The electrical and mechanical specifications are identical to the obsolete LTL-353CK-H4, ensuring direct functional compatibility in existing circuit designs without modification. Both parts share identical export classification (EAR99) and tariff codes, simplifying procurement and compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the LTL-353CKR-H4 directly replace the LTL-353CK-H4 in existing designs?

A: Yes. All electrical parameters (forward voltage, test current, wavelength specifications) and mechanical dimensions (lens size, mounting type, height) are identical. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: The LTL-353CK-H4 is classified as obsolete. The LTL-353CKR-H4 provides continuity with active product status and availability.

Q: Are there packaging differences between these parts?

A: Yes. The main part uses standard packaging while the substitute uses bulk packaging. This affects order quantities and handling but does not impact component performance or compatibility.

Q: Does the LTL-353CKR-H4 meet current compliance standards?

A: Yes. The substitute carries ROHS3 compliance certification, meeting current regulatory requirements for electronic components.

Q: Are the optical characteristics identical?

A: Yes. Both parts have identical dominant wavelength (638nm), peak wavelength (660nm), luminous intensity (1000mcd), viewing angle (12°), and lens geometry (5.00mm round domed top).

Q: What is the moisture sensitivity rating for both parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.