LTW-102C4 Equivalent & Substitute Parts

Part Overview

The LTW-102C4 is a white LED indication component manufactured by Lite-On Inc., configured as a discrete 3.5V radial through-hole device in a 5mm T-1 3/4 lens package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The component delivers 6000mcd brightness with a 20° viewing angle and operates at 20mA test current.

Substiute Parts

LTW-102C4

Lite-On Inc.In Stock: 975LTW-102C4 Datasheet

Current PartRFQ

LTW-2R3D7

Lite-On Inc.In Stock: 23281LTW-2R3D7 Datasheet

MFR RecommendedRFQ

LTW-2S3D8

Lite-On Inc.In Stock: 40255LTW-2S3D8 Datasheet

MFR RecommendedRFQ

SLX-LX5093UWC/C

Lumex Opto/Components Inc.In Stock: 12598SLX-LX5093UWC/C Datasheet

MFR RecommendedRFQ

SSL-LX5093UWC/G

Lumex Opto/Components Inc.In Stock: 1641SSL-LX5093UWC/G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTW-102C4 is determined by the following mandatory parameters:

• Color: White
• Lens Size: 5mm, T-1 3/4
• Lens Transparency: Clear
• Mounting Type: Through Hole
• Package / Case: Radial
• Current - Test: 20mA

The following parameters may vary within acceptable ranges for substitution:

• Voltage - Forward (Vf) (Typ): 2.8V to 3.5V
• Millicandela Rating: 3500mcd to 23000mcd
• Viewing Angle: 15° to 40°
• Height (Max): 7.20mm to 8.70mm

All substitute parts listed are active products with current manufacturing status and RoHS3 compliance, providing long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts meet the core mechanical and electrical compatibility requirements for the LTW-102C4. Selection should be based on the following criteria:

Voltage Compatibility: LTW-2R3D7 and SLX-LX5093UWC/C operate at 3.4V, representing a 0.1V reduction from the original 3.5V specification. LTW-2S3D8 operates at 2.8V, a 0.7V reduction. SSL-LX5093UWC/G maintains the original 3.5V specification. Circuit designs with tight voltage tolerances should prioritize SSL-LX5093UWC/G or LTW-2R3D7.

Brightness Considerations: LTW-2S3D8 delivers 23000mcd, significantly exceeding the original 6000mcd output. SSL-LX5093UWC/G provides 11000mcd. LTW-2R3D7 and SLX-LX5093UWC/C deliver lower brightness at 4200mcd and 3500mcd respectively. Application requirements for visual indication intensity should guide selection.

Viewing Angle: The original LTW-102C4 specifies 20° viewing angle. LTW-2R3D7 (35°) and SLX-LX5093UWC/C (40°) provide wider viewing angles. LTW-2S3D8 (15°) provides a narrower angle. SSL-LX5093UWC/G maintains the 20° specification.

Regulatory Compliance: All substitute parts are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original LTW-102C4 compliance status is not specified.

Availability and Manufacturing Status: All substitute parts are active products with current manufacturing status, ensuring long-term supply chain continuity. Inventory levels range from 1624 to 40200 units.

Physical Dimensions: All substitute parts exceed the original 7.20mm maximum height, ranging from 8.60mm to 8.70mm. PCB layout and mechanical clearance must accommodate this increase.

Frequently Asked Questions (FAQ)

Q: Can LTW-2S3D8 be used as a direct replacement for LTW-102C4?

A: LTW-2S3D8 meets all mandatory substitution parameters: white color, 5mm T-1 3/4 clear lens, through-hole radial package, and 20mA test current. However, it operates at 2.8V (0.7V lower) and delivers 23000mcd (3.8× brighter) with a narrower 15° viewing angle. Circuit voltage tolerance and brightness requirements must be evaluated before selection.

Q: Which substitute provides the closest electrical match to LTW-102C4?

A: SSL-LX5093UWC/G maintains the identical 3.5V forward voltage and 20° viewing angle. It delivers 11000mcd brightness, exceeding the original 6000mcd specification. This part provides the most direct electrical compatibility while offering improved brightness performance.

Q: Are there height restrictions when substituting these parts?

A: Yes. The original LTW-102C4 has a maximum height of 7.20mm. All substitute parts range from 8.60mm to 8.70mm, representing a 1.4mm to 1.5mm increase. PCB layout, component spacing, and mechanical clearance must be verified to accommodate this dimensional change.

Q: Do all substitute parts meet current regulatory requirements?

A: All substitute parts are RoHS3 compliant and REACH unaffected. The original LTW-102C4 compliance status is not specified. For applications requiring regulatory documentation, substitute parts provide current certification.

Q: What is the difference between Lite-On and Lumex substitute options?

A: Lite-On substitutes (LTW-2R3D7, LTW-2S3D8) maintain the same manufacturer as the original part, potentially simplifying supply chain management. Lumex substitutes (SLX-LX5093UWC/C, SSL-LX5093UWC/G) provide alternative sourcing with different electrical and optical characteristics. Both manufacturers produce equivalent mechanical packages and meet the same regulatory standards.

Q: Can brightness differences affect circuit design?

A: Yes. Brightness variations from 3500mcd to 23000mcd may require circuit adjustments to current-limiting resistors or LED driver configurations to maintain consistent visual indication performance. Applications with fixed brightness requirements should select parts with matching millicandela ratings or implement adjustable current control.