LTL-16KE LED Red Diffused T-1 Through Hole Equivalent & Substitute Parts

Part Overview

The LTL-16KE is a red diffused LED indicator from Lite-On Inc. in T-1 through-hole package format, designed for discrete radial LED indication applications. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part maintains standard configuration with a round domed-top lens and 3mm T-1 form factor, suitable for through-hole mounting on PCBs and panel assemblies.

Substiute Parts

LTL-16KE

Lite-On Inc.In Stock: 1014LTL-16KE Datasheet

Current PartRFQ

LTL-1CHE

Lite-On Inc.In Stock: 16968LTL-1CHE Datasheet

MFR RecommendedRFQ

SSL-LX305D4ID

Lumex Opto/Components Inc.In Stock: 930SSL-LX305D4ID Datasheet

DirectRFQ

1254-10SDRD/S530-A3

Everlight Electronics Co LtdIn Stock: 8661254-10SDRD/S530-A3 Datasheet

MFR RecommendedRFQ

204-10SDRD/S530-A3

Everlight Electronics Co LtdIn Stock: 738204-10SDRD/S530-A3 Datasheet

MFR RecommendedRFQ

SSI-LXR1612ID

Lumex Opto/Components Inc.In Stock: 4519SSI-LXR1612ID Datasheet

MFR RecommendedRFQ

SSI-LXR3612ID-300

Lumex Opto/Components Inc.In Stock: 1187SSI-LXR3612ID-300 Datasheet

MFR RecommendedRFQ

SSI-LXR4815ID-150

Lumex Opto/Components Inc.In Stock: 918SSI-LXR4815ID-150 Datasheet

MFR RecommendedRFQ

WP132XID

KingbrightIn Stock: 44812WP132XID Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LTL-16KE is determined by the following critical parameters:

• Color & Lens Transparency: Red diffused lens required for all substitutes
• Mounting Type: Through-hole radial configuration mandatory
• Lens Size & Style: 3mm T-1 round domed-top lens for direct form-factor compatibility
• Height: Maximum 5.20mm to 5.50mm for PCB clearance compatibility
• Regulatory Compliance: RoHS3 and REACH compliance for modern production environments
• Moisture Sensitivity: MSL 1 (Unlimited) for standard storage conditions

Substitute parts are grouped into two categories:

1. Direct Discrete LED Substitutes (LTL-1CHE, SSL-LX305D4ID, WP132XID): Active-status through-hole radial LEDs with 3mm T-1 lens form factor, matching the original mounting and mechanical envelope.

2. Everlight Electronics Substitutes (204-10SDRD/S530-A3, 1254-10SDRD/S530-A3): Active-status through-hole radial LEDs with 3mm round lens, compatible with standard LED indicator circuits.

3. Panel Mount Variants (SSI-LXR1612ID, SSI-LXR3612ID-300, SSI-LXR4815ID-150): Alternative form factors for panel-mounted applications where through-hole discrete mounting is not required.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LTL-1CHE (Lite-On Inc.)

LTL-1CHE is the manufacturer-recommended substitute from Lite-On Inc., the original component supplier. This part maintains identical mechanical envelope (5.20mm height, 3.10mm lens diameter), through-hole radial configuration, and MSL 1 rating. Active product status ensures long-term availability and supply chain continuity. RoHS3 compliance and REACH unaffected status meet modern regulatory requirements. Electrical parameters (2V forward voltage, 20mA test current, 60° viewing angle) are standard for red diffused LED indicators.

Secondary Substitute: SSL-LX305D4ID (Lumex Opto/Components Inc.)

SSL-LX305D4ID provides direct form-factor compatibility with identical 5.20mm height and 3mm T-1 lens size. Active product status and RoHS3 compliance support production continuity. Higher millicandela rating (25mcd vs. 12.6mcd for LTL-1CHE) offers increased brightness for applications requiring enhanced visibility. Electrical specifications (2V, 20mA, 60° viewing angle) match standard LED indicator requirements.

Tertiary Substitute: WP132XID (Kingbright)

WP132XID from Kingbright maintains mechanical compatibility (5.20mm height, 3mm T-1 lens) and through-hole radial mounting. Active product status and RoHS3 compliance ensure supply availability. Millicandela rating (16mcd) and viewing angle (60°) provide balanced performance for standard indicator applications. Wavelength peak (627nm) aligns with red LED indicator specifications.

Alternative Substitutes: Everlight Electronics 204-10SDRD/S530-A3 and 1254-10SDRD/S530-A3

Both Everlight parts maintain red diffused through-hole radial configuration with 3mm lens and 5.20mm to 5.50mm height. Active product status and RoHS3 compliance support production use. 204-10SDRD/S530-A3 offers higher brightness (80mcd) for applications requiring increased luminous intensity. 1254-10SDRD/S530-A3 provides lower test current (2mA) for power-constrained applications. Both parts are suitable for standard LED indicator circuits.

Panel Mount Alternatives: SSI-LXR Series

SSI-LXR1612ID, SSI-LXR3612ID-300, and SSI-LXR4815ID-150 are panel-mount variants for applications where discrete through-hole mounting is not required. These parts feature wire leads and panel cutout configurations. Active product status and RoHS3 compliance apply. Selection depends on panel cutout dimensions and wire lead length requirements.

Frequently Asked Questions (FAQ)

Q: Can LTL-1CHE directly replace LTL-16KE without PCB layout changes?

A: Yes. LTL-1CHE maintains identical through-hole radial configuration, 5.20mm maximum height, and 3mm lens diameter. Pin spacing and mechanical envelope are compatible with existing PCB footprints designed for LTL-16KE.

Q: What is the primary difference between LTL-1CHE and SSL-LX305D4ID?

A: Both parts are mechanically and electrically compatible. SSL-LX305D4ID provides higher brightness (25mcd vs. 12.6mcd). Selection depends on required luminous intensity for the application. Lens transparency and viewing angle (60° for both) are identical.

Q: Are Everlight Electronics substitutes (204-10SDRD/S530-A3 and 1254-10SDRD/S530-A3) compatible with the original LTL-16KE footprint?

A: Yes. Both Everlight parts maintain 3mm round lens diameter, through-hole radial mounting, and 5.20mm to 5.50mm height. PCB footprints designed for LTL-16KE accommodate these substitutes. 204-10SDRD/S530-A3 has slightly increased height (5.50mm) but remains within standard clearance tolerances.

Q: What is the difference between discrete through-hole substitutes and SSI-LXR panel-mount variants?

A: Discrete substitutes (LTL-1CHE, SSL-LX305D4ID, WP132XID, Everlight parts) use radial through-hole leads for PCB mounting. SSI-LXR variants feature wire leads and panel cutout configurations for front-panel indicator applications. Selection depends on mounting method: PCB through-hole vs. panel-mounted.

Q: Do all substitute parts meet RoHS3 and REACH compliance?

A: All active-status substitute parts listed (LTL-1CHE, SSL-LX305D4ID, WP132XID, Everlight Electronics parts, and SSI-LXR series) are RoHS3 compliant. REACH status is unaffected for all parts, meeting modern regulatory requirements for electronic component procurement.

Q: Which substitute offers the lowest power consumption?

A: 1254-10SDRD/S530-A3 from Everlight Electronics operates at 2mA test current, compared to 20mA for other discrete substitutes. This part is suitable for power-constrained applications. Brightness (12.5mcd) and viewing angle (30°) are reduced accordingly.

Q: Can WP132XID be used in high-brightness applications?

A: WP132XID provides 16mcd brightness at 20mA test current. For applications requiring higher brightness, SSL-LX305D4ID (25mcd) or 204-10SDRD/S530-A3 (80mcd) are recommended alternatives.

Q: What is the viewing angle difference between substitute parts?

A: Viewing angles vary: LTL-1CHE, SSL-LX305D4ID, and WP132XID provide 60° viewing angle. 204-10SDRD/S530-A3 offers 50° viewing angle. 1254-10SDRD/S530-A3 provides 30° viewing angle for narrow-beam applications. SSI-LXR panel-mount variants provide 60° viewing angle. Selection depends on required field of view for the indicator application.