LTW-C191TL5 Equivalent & Substitute Parts

Part Overview

The LTW-C191TL5 is a white LED chip in surface mount 0603 (1608 Metric) package manufactured by Lite-On Inc. This discrete LED component is designed for white light indication applications with a forward voltage of 2.93V and a brightness rating of 113mcd at 5mA test current. The component is currently in active product status with 968 pieces available in new original stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the same package footprint and functional category, allowing for direct replacement in circuit designs without redesign requirements.

Substiute Parts

LTW-C191TL5

Lite-On Inc.In Stock: 1039LTW-C191TL5 Datasheet

Current PartRFQ

LTW-C191DS5

Lite-On Inc.In Stock: 152270LTW-C191DS5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTW-C191TL5 is determined by strict equivalence across the following critical parameters:

• Identical package footprint: 0603 (1608 Metric)
• Identical color specification: White
• Identical forward voltage: 2.93V (Typ)
• Identical test current: 5mA
• Identical viewing angle: 130°
• Identical mounting type: Surface Mount
• Identical lens style and size: Rectangle with Flat Top, 1.10mm x 0.80mm
• Identical physical dimensions: 1.60mm L x 0.80mm W, 0.55mm height maximum
• Compliance with ROHS3 standard

The substitute part LTW-C191DS5 meets all these criteria and is therefore classified as a parametric equivalent. Differences in millicandela rating, packaging format, and moisture sensitivity level do not preclude substitution when electrical and mechanical compatibility are maintained.

Parameter Comparison

Engineering Selection Recommendations

Both the LTW-C191TL5 and LTW-C191DS5 are active products from Lite-On Inc. with full ROHS3 compliance. The parts are electrically and mechanically equivalent for circuit-level substitution purposes.

The LTW-C191DS5 offers higher brightness (126mcd versus 113mcd) while maintaining identical electrical characteristics and package dimensions. This higher brightness output does not create incompatibility; it represents an enhanced performance variant suitable for applications where increased luminous intensity is acceptable or beneficial.

The primary distinction between these parts is packaging format: LTW-C191TL5 is supplied in standard packaging, while LTW-C191DS5 is supplied in Tape & Reel format. The LTW-C191DS5 also features improved moisture sensitivity (MSL 2A versus MSL 3), indicating superior moisture resistance during storage and handling.

Selection between these parts should be based on supply chain availability, packaging requirements for manufacturing processes, and inventory management considerations rather than electrical or mechanical constraints.

Frequently Asked Questions (FAQ)

Q: Can LTW-C191DS5 be used as a direct replacement for LTW-C191TL5 on a PCB?

A: Yes. Both parts share identical package footprint (0603), identical forward voltage (2.93V), identical test current (5mA), and identical physical dimensions. They are pin-compatible and functionally equivalent at the circuit level.

Q: What is the difference between the two part numbers?

A: The primary differences are packaging format (standard versus Tape & Reel) and moisture sensitivity level. The LTW-C191DS5 has a higher brightness rating (126mcd versus 113mcd) and better moisture resistance (MSL 2A versus MSL 3).

Q: Will the higher brightness of LTW-C191DS5 cause circuit problems?

A: No. The higher brightness is achieved through improved LED die efficiency while maintaining the same electrical operating parameters. The forward voltage and test current remain identical, so circuit behavior is unchanged.

Q: Are both parts currently available?

A: Yes. Both parts have active product status. LTW-C191TL5 has 968 pieces in stock, and LTW-C191DS5 has 152,232 pieces in stock.

Q: Which part should I choose for new designs?

A: Selection depends on manufacturing and supply requirements. LTW-C191DS5 in Tape & Reel format is typically preferred for high-volume automated assembly. Both parts meet identical electrical and mechanical specifications for circuit design purposes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and carry EAR99 ECCN classification with identical HTSUS codes.