Equivalent & Substitute Parts for Bivar Inc. 3GD-201 Green Diffused T-1 LED

Part Overview

The Bivar Inc. 3GD-201 is a green diffused T-1 through-hole LED designed for discrete green LED indication applications. This component operates at a forward voltage of 2.1V with a test current of 20mA and delivers 25 millicandela brightness at a 568nm peak wavelength. The 3GD-201 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Active alternatives from multiple manufacturers provide functional equivalence while maintaining compatibility with through-hole mounting requirements and standard 3mm T-1 form factors.

Key Parameters

Parameter	Value	Unit
Color	Green	—
Lens Transparency	Diffused	—
Lens Size	3mm, T-1	—
Voltage - Forward (Vf) Typical	2.1V	V
Current - Test	20mA	mA
Millicandela Rating	25mcd	mcd
Wavelength - Peak	568nm	nm
Viewing Angle	35°	degrees
Mounting Type	Through Hole	—
Lens Style	Round with Domed Top	—
Height Maximum	5.10mm	mm
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 3GD-201 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Color: Green
Lens Transparency: Diffused
Lens Size: 3mm, T-1 form factor
Mounting Type: Through Hole
Lens Style: Round with Domed Top
Voltage - Forward (Vf): 2.1V ±0.2V tolerance range
Current - Test: 20mA nominal operation
Wavelength - Peak: 568nm ±10nm range
Moisture Sensitivity Level: 1 (Unlimited)

Parametric Equivalent Classification: The 3GD-F from Bivar Inc. is a parametric equivalent with identical electrical and optical specifications. It differs only in product status (Active vs. Obsolete) and packaging format (Bulk vs. standard), making it a direct functional replacement.

Similar Part Classification: Substitute parts from Würth Elektronik, Everlight Electronics, and Broadcom Limited are classified as similar based on shared core parameters (green color, diffused lens, 3mm T-1 form factor, through-hole mounting). These parts exhibit variations in forward voltage, millicandela rating, viewing angle, and wavelength that require circuit-level evaluation for compatibility.

Parameter Comparison

Parameter	3GD-201 (Main)	3GD-F	151031VS06000	264-7SYGD/S530-E2	HLMP-1503-D00FG	HLMP-1790
Manufacturer	Bivar Inc.	Bivar Inc.	Würth Elektronik	Everlight Electronics	Broadcom Limited	Broadcom Limited
Product Status	Obsolete	Active	Active	Active	Active	Active
Color	Green	Green	Green	Yellow-Green	Green	Green
Lens Transparency	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused
Lens Size	3mm, T-1	3mm, T-1	3.00mm Dia	2.90mm Dia	3mm, T-1	3mm, T-1
Voltage - Forward (Vf) Typical	2.1V	2.1V	2.2V	2.0V	2.1V	1.9V
Current - Test	20mA	20mA	20mA	20mA	10mA	2mA
Millicandela Rating	25mcd	25mcd	30mcd	50mcd	4.2mcd	2.3mcd
Wavelength - Peak	568nm	568nm	560nm	575nm	565nm	565nm
Viewing Angle	35°	35°	60°	60°	60°	50°
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Height Maximum	5.10mm	5.30mm	5.55mm	6.20mm	6.35mm	6.35mm
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Parametric Equivalent - Recommended Primary Substitute:

The 3GD-F from Bivar Inc. is the recommended primary substitute for the obsolete 3GD-201. This part maintains identical electrical specifications (2.1V forward voltage, 20mA test current, 25mcd brightness, 568nm peak wavelength) and optical characteristics (green diffused lens, 3mm T-1 form factor, 35° viewing angle). The 3GD-F is classified as Active with ROHS3 compliance and unlimited moisture sensitivity rating. The marginal height increase (5.30mm vs. 5.10mm) is within standard PCB layout tolerances for through-hole components. Bulk packaging is standard for production quantities.

Similar Parts - Secondary Substitutes with Circuit Evaluation Required:

The HLMP-1790 from Broadcom Limited provides functional substitution with identical green color, diffused lens, 3mm T-1 form factor, and through-hole mounting. Forward voltage is 1.9V (0.2V lower than 3GD-201), and test current is 2mA (significantly lower than 3GD-201's 20mA). Millicandela rating is 2.3mcd, substantially lower than the 3GD-201's 25mcd. This part is suitable for applications where reduced brightness and lower current draw are acceptable. ROHS3 compliance and unlimited moisture sensitivity are confirmed.

The HLMP-1503-D00FG from Broadcom Limited shares identical forward voltage (2.1V) and lens specifications with the 3GD-201 but operates at 10mA test current with 4.2mcd brightness. Viewing angle is 60° versus the 3GD-201's 35°. This part is suitable for applications requiring wider light distribution with moderate brightness reduction. ROHS3 compliance is confirmed.

The 151031VS06000 from Würth Elektronik (WL-TMRC series) provides green diffused 3mm through-hole LED with 2.2V forward voltage (0.1V higher), 30mcd brightness (5mcd higher), and 60° viewing angle. Peak wavelength is 560nm (8nm lower). This part is suitable for applications tolerating slightly higher forward voltage and wider viewing angle. ROHS3 compliance is confirmed.

The 264-7SYGD/S530-E2 from Everlight Electronics is classified as yellow-green (573nm dominant wavelength) rather than pure green. Forward voltage is 2.0V with 50mcd brightness at 20mA test current. Lens size is 2.90mm diameter (slightly smaller). This part is suitable only for applications where yellow-green color shift is acceptable. ROHS3 compliance is confirmed.

All substitute parts carry ROHS3 compliance and MSL 1 (Unlimited) ratings, confirming environmental and handling compatibility with the original 3GD-201 specification.

Frequently Asked Questions (FAQ)

Q: Can the 3GD-F directly replace the 3GD-201 without circuit modification?

A: Yes. The 3GD-F is a parametric equivalent with identical forward voltage (2.1V), test current (20mA), brightness (25mcd), and wavelength (568nm). The 0.2mm height increase (5.30mm vs. 5.10mm) is within standard through-hole PCB tolerances. No circuit modification is required.

Q: What is the primary difference between the 3GD-201 and 3GD-F?

A: The 3GD-201 is obsolete; the 3GD-F is active production. Packaging differs (standard vs. bulk), but electrical and optical specifications are identical. The 3GD-F is the direct replacement for design continuity.

Q: Can I use HLMP-1790 as a substitute if brightness reduction is acceptable?

A: Yes, with circuit evaluation. The HLMP-1790 operates at 1.9V forward voltage and 2mA test current, delivering only 2.3mcd brightness compared to the 3GD-201's 25mcd. This represents an 91% brightness reduction. Use only in applications where reduced brightness is functionally acceptable and where the lower current draw does not affect circuit operation.

Q: What is the viewing angle difference between the 3GD-201 and similar substitutes?

A: The 3GD-201 has a 35° viewing angle. The HLMP-1790 and HLMP-1503-D00FG both have 60° viewing angles, providing wider light distribution. The 151031VS06000 also has 60°. Wider viewing angles may affect application-specific light distribution patterns; evaluate based on optical design requirements.

Q: Is the 264-7SYGD/S530-E2 suitable as a direct replacement?

A: No, not for applications requiring pure green indication. This part is yellow-green (573nm dominant wavelength) rather than green (568nm). Use only if the application tolerates color shift from green to yellow-green. Forward voltage (2.0V) and brightness (50mcd at 20mA) differ from the 3GD-201.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification. The original 3GD-201 does not specify RoHS status. All active substitutes meet current environmental compliance requirements.

Q: What is the moisture sensitivity rating for all parts?

A: All parts, including the 3GD-201 and all substitutes, carry MSL 1 (Unlimited) rating. This indicates no moisture sensitivity restrictions for storage, handling, or soldering processes.

Q: Can I use HLMP-1640 or HLMP-1641 as substitutes?

A: No. The HLMP-1640 operates at 5V forward voltage with 1.6mcd brightness at 10mA test current. The HLMP-1641 operates at 12V forward voltage with 1.6mcd brightness at 13mA test current. Both represent significant departures from the 3GD-201's 2.1V, 20mA, 25mcd specification and are suitable only for different circuit topologies.

Q: What packaging formats are available for substitute parts?

A: The 3GD-F is available in Bulk packaging. The HLMP-1790-A0002 is available in Cut Tape (CT) format. Most other substitutes are available in Bulk. Verify packaging availability with supplier inventory for production requirements.

Q: How do I determine which substitute is best for my application?

A: Evaluate based on: (1) Forward voltage compatibility with existing circuit design; (2) Required brightness (millicandela rating); (3) Acceptable viewing angle; (4) Color specification (green vs. yellow-green); (5) Current draw requirements. The 3GD-F is the recommended choice for direct replacement. Other substitutes require circuit-level evaluation based on these parameters.

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