LED GREEN CLEAR 3MM ROUND T/H DG3803X Equivalent & Substitute Parts

Part Overview

The DG3803X is a green 525nm LED indication component manufactured by Stanley Electric Co, designed for through-hole mounting in discrete 3.5V radial applications. This part is classified as obsolete, necessitating identification of active equivalent components that maintain functional compatibility across electrical and mechanical parameters. Substitute parts must satisfy the core operational requirements: green wavelength specification, 3mm T-1 form factor, through-hole mounting, and 20mA test current operation.

Key Parameters

Parameter	DG3803X Value	Substitution Relevance
Color	Green	Critical - Must match
Lens Size	3mm, T-1	Critical - Physical compatibility
Mounting Type	Through Hole	Critical - PCB assembly method
Wavelength - Dominant	525nm	Critical - Color specification
Voltage - Forward (Vf) (Typ)	3.5V	Important - Circuit design parameter
Current - Test	20mA	Important - Operating condition
Millicandela Rating	1200mcd	Important - Brightness specification
Viewing Angle	20°	Important - Optical characteristic
Height (Max)	5.90mm	Important - PCB clearance
Lens Transparency	Clear	Critical - Optical property
Package / Case	Radial	Critical - Lead configuration

Substitute Part Grouping Explanation

Substitution logic is based on strict alignment with the following parameters:

Critical Parameters (Must Match Exactly):

Color: Green
Lens Size: 3mm, T-1 form factor
Mounting Type: Through Hole
Lens Transparency: Clear
Package / Case: Radial

Important Parameters (Must Be Within Operational Range):

Wavelength - Dominant: 525nm ± acceptable green spectrum range (520-530nm)
Voltage - Forward (Vf): 3.2V to 3.5V (circuit design tolerance)
Current - Test: 20mA (standard test condition)
Millicandela Rating: Minimum 1200mcd (brightness requirement)
Viewing Angle: 20° to 45° (application dependent)
Height (Max): Not to exceed 5.90mm (PCB clearance)

All five substitute parts meet the critical parameters. Variations in forward voltage, brightness, and viewing angle are within acceptable operational ranges for green LED indication applications.

Parameter Comparison

Parameter	DG3803X (Stanley Electric)	151033GS03000 (Würth Elektronik)	204-10SUGC/S400-A5 (Everlight)	264-7SUGC/S400-A4 (Everlight)	OVLBG4C7 (TT Electronics)	XLDG11W (SunLED)
Color	Green	Green	Green	Green	Green	Green
Lens Size	3mm, T-1	3.00mm Dia	3.00mm Dia	2.90mm Dia	3mm, T-1	3mm, T-1
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Wavelength - Dominant	525nm	530nm	525nm	530nm	525nm	525nm
Voltage - Forward (Vf) (Typ)	3.5V	3.2V	3.2V	3.3V	3.2V	3.3V
Current - Test	20mA	20mA	20mA	20mA	20mA	20mA
Millicandela Rating	1200mcd	15000mcd	3200mcd	1250mcd	8400mcd	8990mcd
Viewing Angle	20°	30°	30°	30°	45°	34°
Height (Max)	5.90mm	5.55mm	5.50mm	4.80mm	5.35mm	4.60mm
Lens Transparency	Clear	Clear	Clear	Clear	Clear	Clear
Package / Case	Radial	Radial	Radial	Radial	Radial	Radial
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Product Status Consideration: The DG3803X is classified as obsolete. All five substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain continuity.

Compliance and Certifications: Four of the five substitute parts carry ROHS3 compliance certification (151033GS03000, 204-10SUGC/S400-A5, OVLBG4C7, XLDG11W). The 264-7SUGC/S400-A4 does not specify RoHS status in the provided data. All parts are REACH Unaffected or not specified, indicating no regulatory restrictions.

Electrical Parameter Alignment: Forward voltage ranges from 3.2V to 3.5V across all parts. The DG3803X operates at 3.5V; substitute parts operate at 3.2V to 3.3V. Circuit designs must accommodate this 0.2V to 0.3V reduction in forward voltage through resistor value adjustment or voltage supply verification.

Brightness Specification: The DG3803X specifies 1200mcd. Substitute parts range from 1250mcd to 15000mcd. Parts with significantly higher brightness (151033GS03000 at 15000mcd, OVLBG4C7 at 8400mcd, XLDG11W at 8990mcd) are suitable for applications requiring enhanced visibility. The 204-10SUGC/S400-A5 (3200mcd) and 264-7SUGC/S400-A4 (1250mcd) provide closer brightness matching.

Viewing Angle Consideration: The DG3803X specifies 20° viewing angle. Substitute parts range from 30° to 45°. Wider viewing angles provide broader visibility but may not be suitable for applications requiring narrow-angle indication. The 264-7SUGC/S400-A4 at 30° provides the closest match to the original specification.

Physical Dimensions: All substitute parts fit within the 5.90mm maximum height of the DG3803X. The 264-7SUGC/S400-A4 (4.80mm) and XLDG11W (4.60mm) provide additional PCB clearance. The 264-7SUGC/S400-A4 has a slightly reduced lens diameter (2.90mm vs. 3.00mm), which may affect mechanical fit in tight component spacing.

Packaging Consideration: The DG3803X is specified with "-" packaging (likely bulk). Substitute parts are available in bulk or tape & reel formats. The 264-7SUGC/S400-A4 is supplied in tape & reel, which may require different handling procedures.

Frequently Asked Questions (FAQ)

Q: Can I directly replace DG3803X with any of these substitute parts without circuit modification?

A: Direct replacement is not recommended without circuit verification. The primary concern is forward voltage variation. The DG3803X operates at 3.5V, while most substitutes operate at 3.2V to 3.3V. This 0.2V to 0.3V difference affects current-limiting resistor calculations. Verify that your circuit's resistor value accommodates the lower forward voltage, or adjust the resistor accordingly.

Q: Which substitute part most closely matches the DG3803X specifications?

A: The 264-7SUGC/S400-A4 (Everlight) provides the closest overall match: 1250mcd brightness (vs. 1200mcd), 3.3V forward voltage (vs. 3.5V), and 30° viewing angle (vs. 20°). However, it has a slightly reduced lens diameter (2.90mm vs. 3.00mm) and is supplied in tape & reel format rather than bulk.

Q: What is the impact of higher brightness ratings in substitute parts?

A: Substitute parts with higher millicandela ratings (151033GS03000 at 15000mcd, OVLBG4C7 at 8400mcd, XLDG11W at 8990mcd) provide increased luminous intensity. This is beneficial for applications requiring enhanced visibility or longer viewing distances. However, higher brightness may cause excessive illumination in applications designed for the original 1200mcd specification. Current-limiting resistor adjustment may be necessary to maintain appropriate brightness levels.

Q: Are all substitute parts suitable for my application?

A: All five substitute parts meet the critical parameters: green color, 3mm T-1 form factor, through-hole mounting, clear lens, and radial package. However, differences in forward voltage, brightness, and viewing angle require application-specific evaluation. Verify that your circuit design accommodates the electrical parameter variations and that the optical characteristics (brightness and viewing angle) align with your application requirements.

Q: What is the significance of the viewing angle difference?

A: The DG3803X specifies 20° viewing angle, while substitutes range from 30° to 45°. A narrower viewing angle (20°) concentrates light in a specific direction, suitable for applications requiring directional indication. Wider viewing angles (30° to 45°) distribute light over a broader area, suitable for applications requiring omnidirectional visibility. Select a substitute based on your application's viewing angle requirement.

Q: Do all substitute parts have the same compliance certifications?

A: Four of the five substitute parts carry ROHS3 compliance (151033GS03000, 204-10SUGC/S400-A5, OVLBG4C7, XLDG11W). The 264-7SUGC/S400-A4 does not specify RoHS status in the provided data. All parts are REACH Unaffected or not specified. Verify compliance requirements for your specific application or regulatory jurisdiction.

Q: Can I use the 264-7SUGC/S400-A4 if it is supplied in tape & reel format?

A: Yes, tape & reel format is suitable for automated assembly processes. However, if your assembly process uses bulk components, you may need to adjust your procurement or assembly procedures. Verify that your component handling equipment is compatible with tape & reel format.

Q: What should I do if the substitute part's forward voltage is lower than the original?

A: Lower forward voltage (3.2V to 3.3V vs. 3.5V) requires resistor recalculation. Use Ohm's law to determine the new resistor value: R = (V_supply - V_f) / I_desired. For example, if your original circuit used a resistor calculated for 3.5V forward voltage, recalculate using the substitute part's 3.2V to 3.3V forward voltage to maintain the desired LED current. Failure to adjust the resistor may result in excessive current and premature LED failure.

Q: Are there any height restrictions I should consider?

A: All substitute parts have maximum heights at or below the DG3803X specification (5.90mm). The 264-7SUGC/S400-A4 (4.80mm) and XLDG11W (4.60mm) provide additional clearance. If your PCB has height constraints, these parts offer additional design flexibility.

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