LTL353TGK LED Green Clear T-1 3/4 Through-Hole Equivalent & Substitute Parts

Part Overview

The LTL353TGK is a green LED indicator from Lite-On Inc., featuring a 5mm T-1 3/4 through-hole package with 6000mcd brightness at 530nm dominant wavelength. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing production, maintenance, and design updates. This reference provides direct component alternatives based on electrical and mechanical compatibility parameters.

Substiute Parts

LTL353TGK

Lite-On Inc.In Stock: 752LTL353TGK Datasheet

Current PartRFQ

LTL2T3TGK6

Lite-On Inc.In Stock: 18541LTL2T3TGK6 Datasheet

MFR RecommendedRFQ

333-2SUGC/C525

Everlight Electronics Co LtdIn Stock: 1124333-2SUGC/C525 Datasheet

MFR RecommendedRFQ

333-2SYGC/S530-E2

Everlight Electronics Co LtdIn Stock: 1117333-2SYGC/S530-E2 Datasheet

MFR RecommendedRFQ

383-2SYGC/S530-E2

Everlight Electronics Co LtdIn Stock: 691383-2SYGC/S530-E2 Datasheet

MFR RecommendedRFQ

5219465F

DialightIn Stock: 26845219465F Datasheet

MFR RecommendedRFQ

5219947F

DialightIn Stock: 10725219947F Datasheet

MFR RecommendedRFQ

SLA-560MT3F

Rohm SemiconductorIn Stock: 2068SLA-560MT3F Datasheet

MFR RecommendedRFQ

SSL-LX5093UPGC/D

Lumex Opto/Components Inc.In Stock: 870SSL-LX5093UPGC/D Datasheet

MFR RecommendedRFQ

XLDG12W

SunLEDIn Stock: 5920XLDG12W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the LTL353TGK is determined by the following critical parameters:

Primary Compatibility Criteria:

• Color: Green
• Mounting Type: Through Hole
• Lens Size: 5mm, T-1 3/4 package
• Voltage - Forward (Vf): 3.5V nominal operation
• Current - Test: 20mA standard test current
• Package / Case: Radial configuration

Secondary Compatibility Considerations:

• Wavelength range (dominant and peak) within green spectrum (520-530nm)
• Millicandela rating (brightness) for application requirements
• Viewing angle tolerance for optical performance
• Height within acceptable PCB assembly limits
• Lens transparency (clear) for visual indication

Substitute parts are grouped into two categories:

Group 1 - Direct Green LED Substitutes (Preferred): Parts maintaining green color (520-530nm wavelength), 3.5V forward voltage, and comparable brightness levels. These include LTL2T3TGK6, 333-2SUGC/C525, 5219947F, SSL-LX5093UPGC/D, and XLDG12W.

Group 2 - Alternative Green LED Substitutes: Parts with green color but differing forward voltage (2.3V-3.8V range) or brightness characteristics. These include 5219465F and SLA-560MT3F.

Group 3 - Color Variant Substitutes: Yellow-green LEDs (333-2SYGC/S530-E2, 383-2SYGC/S530-E2) with 2V forward voltage and different wavelength (573nm). These are suitable only when color specification permits yellow-green indication.

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitutes:

LTL2T3TGK6 (Lite-On Inc.) is the manufacturer-recommended equivalent. It maintains identical forward voltage (3.5V), same test current (20mA), and comparable wavelength (525nm). Product status is active with ROHS3 compliance. Brightness is reduced to 4500mcd with expanded viewing angle (30°), suitable for applications where narrower beam angle is not critical.

5219947F (Dialight) provides active product status with ROHS3 compliance. Forward voltage is 3.8V with 4200mcd brightness at 527nm wavelength. Viewing angle expands to 30°. Height increases to 9.65mm; verify PCB assembly clearance.

XLDG12W (SunLED) offers active status with ROHS3 compliance. Forward voltage is 3.3V with significantly higher brightness (13990mcd) at 525nm wavelength. Suitable for applications requiring increased luminous intensity. Height is 8.60mm.

SSL-LX5093UPGC/D (Lumex Opto/Components Inc.) provides the highest brightness option at 30000mcd with 3.2V forward voltage and active product status. ROHS3 compliant. Wavelength is 520nm with 20° viewing angle. Height is 8.60mm.

Alternative Substitutes:

333-2SUGC/C525 (Everlight Electronics Co Ltd) maintains 3.5V forward voltage but provides lower brightness (2000mcd) at 525nm wavelength. Active product status. Suitable for low-brightness indication applications.

Not Recommended for New Designs:

SLA-560MT3F (Rohm Semiconductor) carries "Not For New Designs" status despite ROHS3 compliance. Forward voltage is 2.3V with significantly reduced brightness (100mcd). Use only for legacy system maintenance.

Color Variant Substitutes:

333-2SYGC/S530-E2 and 383-2SYGC/S530-E2 (Everlight Electronics Co Ltd) are yellow-green LEDs with 2V forward voltage and 573nm wavelength. These are suitable only when application specifications permit yellow-green color indication instead of pure green.

Frequently Asked Questions (FAQ)

Q: Can LTL2T3TGK6 directly replace LTL353TGK without circuit modification?

A: LTL2T3TGK6 maintains identical forward voltage (3.5V) and test current (20mA), enabling direct replacement in most applications. However, brightness is reduced from 6000mcd to 4500mcd, and viewing angle expands from 8° to 30°. Verify that reduced brightness and wider beam angle are acceptable for your application.

Q: What is the difference between the substitute parts in terms of forward voltage?

A: Substitute parts operate at three forward voltage levels: 2V (yellow-green variants), 2.3V (Dialight 5219465F, Rohm SLA-560MT3F), 3.2-3.8V (primary green substitutes). Circuit design must accommodate the selected forward voltage. Parts with 3.5V forward voltage (LTL2T3TGK6, 333-2SUGC/C525) require no voltage adjustment from the original design.

Q: Which substitute offers the closest brightness match to the original LTL353TGK?

A: XLDG12W (13990mcd) and SSL-LX5093UPGC/D (30000mcd) exceed the original 6000mcd brightness. LTL2T3TGK6 (4500mcd) and 5219947F (4200mcd) provide the closest lower brightness levels. 333-2SUGC/C525 (2000mcd) is significantly dimmer. Select based on application brightness requirements.

Q: Are all substitute parts RoHS compliant?

A: ROHS3 compliance is confirmed for LTL2T3TGK6, 5219465F, 5219947F, SLA-560MT3F, SSL-LX5093UPGC/D, and XLDG12W. Everlight parts (333-2SUGC/C525, 333-2SYGC/S530-E2, 383-2SYGC/S530-E2) do not specify RoHS status in provided data. Verify compliance requirements with your procurement specifications.

Q: Can I use yellow-green LED substitutes (333-2SYGC/S530-E2, 383-2SYGC/S530-E2) in place of the green LTL353TGK?

A: Yellow-green substitutes operate at 2V forward voltage with 573nm wavelength, producing visually distinct yellow-green indication instead of pure green. Use only if application specifications explicitly permit color variation. Forward voltage difference (2V vs. 3.5V) requires circuit adjustment.

Q: What is the height constraint for PCB assembly compatibility?

A: Original LTL353TGK height is 8.80mm maximum. Most substitutes fall within 8.60-8.90mm range. Exception: 5219947F reaches 9.65mm. Verify clearance with PCB assembly equipment and component placement constraints before selection.

Q: Why is SLA-560MT3F marked "Not For New Designs"?

A: SLA-560MT3F carries "Not For New Designs" product status, indicating the manufacturer is discontinuing this part for new applications. Use only for legacy system maintenance and repair. For new designs, select from active-status alternatives.

Q: Which substitute provides the narrowest viewing angle closest to the original 8°?

A: Original LTL353TGK has 8° viewing angle. 333-2SUGC/C525 and 333-2SYGC/S530-E2 and 383-2SYGC/S530-E2 provide 10° viewing angle, the closest available among substitutes. Most other alternatives offer 20-40° viewing angles for broader light distribution.