Bivar Inc. 3SGC LED Green Clear T-1 Through-Hole

Part Overview

The Bivar Inc. 3SGC is a green LED indicator for discrete indication applications with a T-1 3mm through-hole package. This component features a colorless clear lens with a domed top configuration and operates at a forward voltage of 2.1V with a 20mA test current. The 3SGC is classified as obsolete, necessitating identification of equivalent and substitute components that maintain functional compatibility in through-hole LED indication circuits.

Substiute Parts

3SGC

Bivar Inc.In Stock: 10723SGC Datasheet

Current PartRFQ

204-10SUGC/S400-A5

Everlight Electronics Co LtdIn Stock: 793204-10SUGC/S400-A5 Datasheet

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264-7SUGC/S400-A4

Everlight Electronics Co LtdIn Stock: 1116264-7SUGC/S400-A4 Datasheet

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OVLBG4C7

TT Electronics / Optek TechnologyIn Stock: 42659OVLBG4C7 Datasheet

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SSL-LX3044UEGC

Lumex Opto/Components Inc.In Stock: 902SSL-LX3044UEGC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the Bivar Inc. 3SGC is determined by strict electrical and mechanical parameter matching across the following key criteria:

Mechanical Compatibility:

• Lens size: 3mm T-1 form factor
• Mounting type: Through-hole radial configuration
• Lens style: Round with domed top
• Lens color: Colorless

Electrical Compatibility:

• Forward voltage (Vf): Range 2.1V to 3.5V allows circuit design tolerance
• Test current: 20mA standard for all candidates
• Viewing angle: 30° to 45° acceptable for indication applications
• Color: Green wavelength range (502nm to 568nm peak wavelength)

The four substitute parts listed maintain mechanical form factor equivalence and support functional replacement in through-hole green LED indication circuits. All substitute components are evaluated within the electrical operating envelope required for this application category.

Parameter Comparison

Engineering Selection Recommendations

Primary Candidates:

The Everlight Electronics 204-10SUGC/S400-A5 and 264-7SUGC/S400-A4, along with the TT Electronics OVLBG4C7, are active products with RoHS3 compliance and established supply availability. These components represent the most current technology options for replacement in active designs.

The Lumex SSL-LX3044UEGC is also an active product with RoHS3 and REACH compliance, providing an additional option with verified supply status.

Electrical Considerations:

All substitute parts operate at higher forward voltages (3.2V to 3.5V) compared to the original 3SGC (2.1V). Circuit designs must accommodate this voltage differential through resistor value adjustment in series LED circuits. The 20mA test current specification is consistent across all components, supporting functional equivalence in indication applications.

Mechanical Fit:

The original 3SGC height of 4.50mm is most closely matched by the SSL-LX3044UEGC (4.60mm) and 264-7SUGC/S400-A4 (4.80mm). The 204-10SUGC/S400-A5 and OVLBG4C7 present slightly increased heights of 5.50mm and 5.35mm respectively, which may require PCB layout verification for space-constrained applications.

Brightness Levels:

Substitute components offer significantly higher millicandela ratings than the original 50mcd specification, ranging from 1100mcd to 8400mcd. Design circuits must account for increased brightness in human-interface applications requiring specific brightness levels.

Frequently Asked Questions (FAQ)

Q: What is the primary reason to substitute the Bivar Inc. 3SGC?

A: The 3SGC is classified as obsolete, making it unavailable for new designs and difficult to source for production. The listed substitute parts are active products with confirmed supply availability.

Q: Are all substitute parts mechanically compatible with the original 3SGC?

A: Yes. All substitute parts maintain the 3mm T-1 through-hole radial package format with round domed-top lenses. Minor variations in maximum height (4.50mm to 5.50mm range) may require verification in applications with strict height constraints.

Q: What electrical changes occur when using a substitute part?

A: The primary electrical change is the forward voltage increase from 2.1V to 3.2V-3.5V across substitute options. Circuit designs using series current-limiting resistors require recalculation to accommodate this voltage shift while maintaining the 20mA test current specification.

Q: Do the substitute parts have different compliance certifications?

A: Yes. The Everlight Electronics, TT Electronics, and Lumex parts are all RoHS3 compliant. The Lumex SSL-LX3044UEGC additionally maintains REACH compliance status. The original 3SGC does not carry RoHS3 designation due to its obsolete status.

Q: How does brightness comparison affect substitution selection?

A: The original 3SGC operates at 50mcd brightness. Substitute parts range from 1100mcd to 8400mcd. Design considerations must evaluate whether the increased brightness is acceptable for the intended application or if additional optical filtering is required.

Q: Can substitute parts be selected based on packaging preference?

A: Yes. The 204-10SUGC/S400-A5 is supplied in Bulk packaging, the 264-7SUGC/S400-A4 is supplied in Tape & Reel format, and the OVLBG4C7 and SSL-LX3044UEGC are supplied in Bulk. Component procurement strategies may influence selection based on order quantities and handling requirements.

Q: Are there wavelength differences between the original and substitute parts?

A: Yes. The original 3SGC peaks at 568nm green wavelength. Substitute parts peak at 502nm to 525nm, representing a shift toward the yellow-green spectrum. Visual color perception differences may be negligible in most indication applications, but should be verified if color matching is critical.

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