3GD12V-F Equivalent & Substitute Parts

Part Overview

The 3GD12V-F is a green diffused LED indicator from Bivar Inc., configured as a 12V discrete radial through-hole component with a 25mcd millicandela rating and 3mm T-1 form factor. The product is currently obsolete, requiring qualified substitutes for ongoing system maintenance and new designs.

Key Parameters

Parameter	3GD12V-F
Manufacturer	Bivar Inc.
Color	Green
Lens Transparency	Diffused
Lens Size	3mm, T-1
Voltage - Forward (Vf)	12V
Current - Test	10mA
Millicandela Rating	25mcd
Viewing Angle	35°
Mounting Type	Through Hole
Wavelength - Peak	568nm
Height (Max)	5.30mm
Product Status	Obsolete

Substitute Part Grouping Explanation

Equivalent and substitute parts are classified based on shared electrical and mechanical parameters that govern functional compatibility:

Parametric Equivalents maintain identical forward voltage (12V) and current specifications, diffused green lens construction, 3mm T-1 form factor, and through-hole radial mounting. These parts directly replace the 3GD12V-F without circuit modifications.

Similar Alternatives share core mechanical attributes (3mm T-1 form factor, through-hole mounting, diffused green lens, green indication color) but operate at different forward voltages (1.9V to 5V) and current ratings. These require series resistor recalculation when substituting into 12V circuits.

Wavelength Compatibility is maintained across all substitutes within the green spectrum (565nm to 573nm peak wavelengths), meeting green indication requirements.

Key Substitution Parameters:

Forward voltage (Vf) matching or circuit resistor recalculation capability
Lens size and form factor (3mm, T-1)
Mounting type (through-hole radial)
Color and transparency (green, diffused)
Mechanical height compatibility

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vf (Typ)	Current - Test	Lens Size	mcd	Viewing Angle	Wavelength - Peak	Height (Max)	Status
3GD12V-F	Bivar Inc.	12V	10mA	3mm, T-1	25mcd	35°	568nm	5.30mm	Obsolete
3GD-F	Bivar Inc.	2.1V	20mA	3mm, T-1	25mcd	35°	568nm	5.30mm	Active
151031VS06000	Würth Elektronik	2.2V	20mA	3.00mm	30mcd	60°	560nm	5.55mm	Active
264-7SYGD/S530-E2	Everlight Electronics Co Ltd	2V	20mA	2.90mm	50mcd	60°	575nm	6.20mm	Active
HLMP-1640	Broadcom Limited	5V	10mA	3mm, T-1	1.6mcd	60°	565nm	6.35mm	Active
HLMP-1640-B00A1	Broadcom Limited	5V	10mA	3mm, T-1	1.6mcd	120°	565nm	—	Active
HLMP-1640-B00A2	Broadcom Limited	5V	10mA	3mm, T-1	1.6mcd	60°	565nm	—	Active
HLMP-1641	Broadcom Limited	12V	13mA	3mm, T-1	1.6mcd	60°	565nm	6.35mm	Active
HLMP-1790	Broadcom Limited	1.9V	2mA	3mm, T-1	2.3mcd	50°	565nm	6.35mm	Active
HLMP-1790-A0002	Broadcom Limited	1.9V	2mA	3mm, T-1	2.3mcd	50°	565nm	6.35mm	Active
LTL-4231	Lite-On Inc.	2.1V	10mA	3mm, T-1	12.6mcd	40°	565nm	6.55mm	Active

Engineering Selection Recommendations

Direct Replacement (No Circuit Changes Required):

HLMP-1641 (Broadcom Limited): Maintains 12V forward voltage and through-hole T-1 form factor. Current specification increases from 10mA to 13mA. Active product status with ROHS3 compliance and REACH unaffected status.

Alternative Selection with Series Resistor Recalculation:

3GD-F (Bivar Inc.): Identical form factor and brightness (25mcd). Forward voltage drops to 2.1V, requiring resistor adjustment for 12V circuits. Active status, bulk packaging available.
LTL-4231 (Lite-On Inc.): T-1 form factor with 12.6mcd brightness and 2.1V forward voltage. Requires resistor modification. Active status with ROHS3 compliance, though REACH affected.
HLMP-1790 / HLMP-1790-A0002 (Broadcom Limited): Lowest voltage operation at 1.9V, suitable for low-power circuits. Active status, ROHS3 compliant, REACH unaffected. Available in bulk and cut tape packaging.
151031VS06000 (Würth Elektronik): 2.2V operation with 30mcd brightness. Higher viewing angle (60°) for broader indication visibility. Active status, ROHS3 compliant, REACH unaffected.

Lower Brightness Alternatives:

HLMP-1640 / HLMP-1640-B00A1 / HLMP-1640-B00A2 (Broadcom Limited): 5V operation with 1.6mcd brightness. Right-angle variants available. ROHS3 compliant, REACH unaffected.

Considerations: All substitute parts maintain green indication color with diffused lens characteristics. Parts with forward voltages below 12V require circuit resistor recalculation based on target current draw. Mechanical height variations (5.30mm to 6.55mm) must be verified against PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 3GD12V-F with HLMP-1641? A: Yes. HLMP-1641 operates at 12V forward voltage with identical T-1 form factor and through-hole mounting. The current specification increases from 10mA to 13mA, which requires verification of existing series resistor adequacy in your circuit.

Q: Why do some substitutes have lower millicandela ratings? A: Brightness is determined by junction design and materials. Lower-rated parts may require circuit design verification to ensure adequate visual indication for your application's ambient lighting conditions.

Q: Can I use 3GD-F (2.1V) in a circuit designed for 3GD12V-F (12V)? A: No, direct substitution is not possible. A 2.1V part in a 12V circuit requires series resistor recalculation to limit current and prevent LED damage. The resistance value changes based on desired operating current.

Q: Are all substitute parts through-hole mounted? A: Yes. All listed substitutes use through-hole radial mounting. HLMP-1640-B00A1 and HLMP-1640-B00A2 variants are right-angle configurations for different PCB mounting orientations.

Q: What is the maximum height difference among substitutes? A: The 3GD12V-F measures 5.30mm maximum height. Alternatives range from 5.30mm to 6.55mm. Height variation must be validated against mechanical clearance requirements in your enclosure or assembly.

Q: Do all substitutes meet RoHS3 compliance? A: All active substitutes listed are ROHS3 compliant. The original 3GD12V-F (obsolete) does not have RoHS compliance stated.

Q: What wavelength range qualifies as green indication? A: All substitutes operate within 560nm to 575nm peak wavelengths, maintaining green visual indication across the provided part list.

Q: Are packaging options consistent across manufacturers? A: No. Bivar 3GD-F is available in bulk. Broadcom HLMP-1790-A0002 is supplied in cut tape. Other parts are primarily bulk packaged. Verify packaging requirements with your procurement specifications.

Q: Which substitute offers the highest brightness? A: 264-7SYGD/S530-E2 (Everlight) provides 50mcd, the highest among substitutes. However, it operates at 2V and has a 2.90mm diameter lens, requiring circuit and mechanical validation.

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