THG3801C Green LED Equivalent & Substitute Parts

Part Overview

The THG3801C is a green 530nm LED indication component manufactured by Stanley Electric Co., designed for through-hole mounting applications requiring discrete 3V radial configuration. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility within specified electrical and mechanical parameters. Substitute parts must satisfy the same mounting type, lens characteristics, and operational voltage range to ensure direct replacement capability.

Substiute Parts

THG3801C

Stanley Electric CoIn Stock: 1160THG3801C Datasheet

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LTL42TG6N

Lite-On Inc.In Stock: 9307LTL42TG6N Datasheet

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OVLBG4C7

TT Electronics / Optek TechnologyIn Stock: 42659OVLBG4C7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the THG3801C is determined by the following mandatory parameters:

Physical Compatibility:

• Lens size: 3mm, T-1
• Lens style: Round with Domed Top
• Lens transparency: Clear
• Mounting type: Through Hole
• Package configuration: Radial

Electrical Compatibility:

• Forward voltage (Vf): 3V nominal (tolerance range 2.8V to 3.5V acceptable for circuit integration)
• Color: Green spectrum (dominant wavelength 520nm to 530nm)
• Current rating: Test current 5mA to 20mA operational range

Mechanical Compatibility:

• Height maximum: 5.35mm to 5.90mm
• Configuration: Standard

The substitute parts LTL42TG6N and OVLBG4C7 satisfy all mandatory physical and electrical parameters within the specified tolerance ranges, enabling direct replacement in through-hole PCB applications.

Parameter Comparison

Engineering Selection Recommendations

LTL42TG6N (Lite-On Inc.): This substitute maintains full physical compatibility with identical 3mm T-1 lens configuration and radial through-hole mounting. Forward voltage of 3.5V represents a 0.5V increase from the THG3801C nominal specification, requiring circuit verification for voltage-sensitive applications. The part is active in production status with ROHS3 compliance certification. Millicandela rating of 3000mcd is slightly lower than the original 3500mcd specification. Viewing angle expansion to 45° provides broader light distribution compared to the original 15° specification.

OVLBG4C7 (TT Electronics / Optek Technology): This substitute provides identical physical mounting characteristics with 3mm T-1 lens and radial through-hole configuration. Forward voltage of 3.2V represents a 0.2V increase from the THG3801C nominal specification, minimizing circuit redesign requirements. The part is active in production with ROHS3 compliance and REACH unaffected status. Millicandela rating of 8400mcd significantly exceeds the original 3500mcd specification, providing enhanced brightness output. Viewing angle of 45° expands light distribution characteristics. Height of 5.35mm is within acceptable tolerance range.

Both substitute parts satisfy mandatory physical and electrical compatibility parameters. Selection between LTL42TG6N and OVLBG4C7 depends on brightness requirements and circuit voltage tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can THG3801C be directly replaced with LTL42TG6N or OVLBG4C7 without circuit modification?

A: Physical replacement is direct due to identical 3mm T-1 lens configuration and radial through-hole mounting. Electrical compatibility requires circuit verification. Forward voltage differences (3.5V for LTL42TG6N, 3.2V for OVLBG4C7 versus 3V for THG3801C) may require current-limiting resistor adjustment depending on circuit design. Brightness differences (3000mcd and 8400mcd respectively versus 3500mcd original) should be evaluated for application requirements.

Q: What are the key physical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: lens size (3mm, T-1), lens style (round with domed top), lens transparency (clear), mounting type (through hole), and package configuration (radial). All three parts satisfy these mandatory physical parameters.

Q: How do viewing angle differences affect substitution suitability?

A: The THG3801C specifies 15° viewing angle, while both substitutes provide 45° viewing angle. The wider viewing angle of substitute parts results in broader light distribution. Application requirements determine whether this characteristic change is acceptable.

Q: Are the substitute parts compliant with current regulatory standards?

A: Both LTL42TG6N and OVLBG4C7 are ROHS3 compliant. OVLBG4C7 additionally carries REACH unaffected status. Both parts are classified as EAR99 for export control purposes.

Q: What is the significance of the millicandela rating differences?

A: Millicandela rating indicates brightness output. LTL42TG6N provides 3000mcd (slightly lower than original 3500mcd), while OVLBG4C7 provides 8400mcd (significantly higher). Selection depends on whether the application requires brightness maintenance or can accommodate increased output.

Q: How should forward voltage differences be handled in circuit design?

A: Forward voltage differences of 0.2V to 0.5V typically require current-limiting resistor recalculation to maintain proper LED operating current. Circuit designers must verify that the power supply voltage accommodates the substitute part's forward voltage specification.