DG1111C-TR Green Diffused SMD LED Equivalent & Substitute Parts

Part Overview

The DG1111C-TR is a green diffused surface mount LED manufactured by Stanley Electric Co, specified as a 0603 (1608 Metric) package component with a dominant wavelength of 525nm and forward voltage of 3.3V at 10mA test current. This part is classified as obsolete, necessitating identification of active substitute components that maintain functional compatibility within target applications. Substitute parts must satisfy the same package form factor, mounting type, and core optical/electrical parameters to ensure direct replacement capability in existing designs.

Substiute Parts

DG1111C-TR

Stanley Electric CoIn Stock: 829DG1111C-TR Datasheet

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HSME-C191

Broadcom LimitedIn Stock: 24191HSME-C191 Datasheet

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HSMM-C190

Broadcom LimitedIn Stock: 25132HSMM-C190 Datasheet

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HSMQ-C190

Broadcom LimitedIn Stock: 1569HSMQ-C190 Datasheet

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HSMQ-C191

Broadcom LimitedIn Stock: 18847HSMQ-C191 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the DG1111C-TR is based on the following critical parameters that must align across candidate parts:

Primary Compatibility Criteria:

• Package / Case: 0603 (1608 Metric) — mandatory for PCB footprint compatibility
• Mounting Type: Surface Mount — required for assembly process compatibility
• Color: Green — functional requirement for indication application
• Lens Transparency: Diffused — optical characteristic for light distribution

Secondary Electrical Parameters:

• Voltage - Forward (Vf): 3.3V nominal — determines circuit bias requirements
• Wavelength - Dominant: 525nm ± tolerance — defines color perception and application suitability
• Millicandela Rating: 40mcd baseline — establishes minimum brightness specification

Substitute parts are grouped into two categories based on electrical parameter alignment:

Group A (Direct Electrical Match): Parts matching 3.3V forward voltage and 525nm wavelength range

• HSMM-C190: 3.3V, 525nm dominant wavelength

Group B (Electrical Variant - Higher Performance): Parts with elevated forward voltage (3.4V) and shifted wavelength (527nm)

• HSMQ-C190: 3.4V, 527nm dominant wavelength
• HSMQ-C191: 3.4V, 527nm dominant wavelength

Group C (Electrical Variant - Lower Voltage): Parts with reduced forward voltage (2.1V) and shifted wavelength (572nm)

• HSME-C191: 2.1V, 572nm dominant wavelength

Parameter Comparison

Engineering Selection Recommendations

HSMM-C190 (Recommended Primary Substitute)

HSMM-C190 from Broadcom Limited provides the closest electrical alignment to DG1111C-TR with identical 3.3V forward voltage and 525nm dominant wavelength. This part maintains the same package footprint and surface mount compatibility. The higher millicandela rating (120mcd vs. 40mcd) and wider viewing angle (170° vs. 130°) represent performance enhancements suitable for most indication applications. HSMM-C191 is ROHS3 compliant and carries active product status with 25,103 units in stock. The improved moisture sensitivity level (2A vs. 4) provides superior handling characteristics during assembly and storage.

HSMQ-C190 and HSMQ-C191 (Secondary Substitutes - Electrical Variant)

HSMQ-C190 and HSMQ-C191 are functionally equivalent to each other, differing only in packaging format (Tape & Reel vs. Cut Tape). Both operate at 3.4V forward voltage with 527nm dominant wavelength, representing a 0.1V increase and 2nm wavelength shift from the original specification. These parts deliver higher brightness (145mcd) and maintain 140° viewing angle. Selection of these variants requires circuit design verification to confirm tolerance of the elevated forward voltage within the application's bias network. Both parts are ROHS3 compliant and active.

HSME-C191 (Conditional Substitute - Electrical Variant)

HSME-C191 operates at 2.1V forward voltage with 572nm dominant wavelength, representing significant electrical and optical departure from DG1111C-TR. This part is suitable only for applications where the lower forward voltage and yellow-shifted wavelength (572nm vs. 525nm) are acceptable. The 50mcd brightness and 170° viewing angle provide adequate performance for certain indication roles. HSME-C191 is ROHS3 compliant and active with 24,161 units in stock.

Frequently Asked Questions (FAQ)

Q: Can HSMM-C190 be used as a direct replacement for DG1111C-TR without circuit modification?

A: HSMM-C190 maintains identical forward voltage (3.3V) and dominant wavelength (525nm) as DG1111C-TR, enabling direct substitution in existing circuit designs. The package footprint, mounting type, and electrical bias requirements are compatible. No circuit modification is required.

Q: What is the difference between HSMQ-C190 and HSMQ-C191?

A: HSMQ-C190 and HSMQ-C191 are electrically and optically identical, both specified at 3.4V forward voltage and 527nm dominant wavelength with 145mcd brightness. The difference is packaging format: HSMQ-C190 is supplied in Tape & Reel (TR) format, while HSMQ-C191 is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly process requirements and volume needs.

Q: Why does HSME-C191 have a different wavelength (572nm) compared to the original part?

A: HSME-C191 is a yellow-shifted green LED with 572nm dominant wavelength, compared to 525nm for DG1111C-TR. This represents a different LED die technology within the green spectrum. HSME-C191 is suitable only for applications where the color shift and lower forward voltage (2.1V) are acceptable.

Q: What is the impact of the 0.1V forward voltage difference in HSMQ-C190 and HSMQ-C191?

A: The 3.4V forward voltage in HSMQ-C190 and HSMQ-C191 (vs. 3.3V in DG1111C-TR) requires verification within the application circuit. For current-limiting resistor designs, the 0.1V difference typically results in minimal impact on LED current. For voltage-sensitive applications or designs with tight bias margins, circuit simulation or testing is necessary to confirm acceptable operation.

Q: Are all substitute parts ROHS3 compliant?

A: All four substitute parts (HSMM-C190, HSMQ-C190, HSMQ-C191, HSME-C191) are specified as ROHS3 compliant. The original DG1111C-TR does not specify RoHS status.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: DG1111C-TR is rated MSL 4 (72 Hours), while all substitute parts are rated MSL 2A (4 Weeks). Lower MSL ratings indicate superior moisture resistance and extended shelf life. MSL 2A parts can be stored for up to 4 weeks at specified humidity levels before requiring baking, compared to 72 hours for MSL 4 parts. This provides improved handling flexibility during manufacturing and inventory management.

Q: Can HSMM-C190 be used in applications requiring the exact 525nm wavelength specification?

A: HSMM-C190 is specified with 525nm dominant wavelength, matching DG1111C-TR exactly. Both parts also specify peak wavelength at 523nm and 522nm respectively, representing negligible optical difference. HSMM-C190 is suitable for applications with strict wavelength requirements.

Q: What inventory availability should be considered for production planning?

A: HSMM-C190 has 25,103 units in stock, HSMQ-C191 has 18,759 units, HSME-C191 has 24,161 units, and HSMQ-C190 has 1,550 units. For high-volume production, HSMM-C190, HSMQ-C191, or HSME-C191 provide adequate inventory depth. HSMQ-C190 has limited availability and should be considered only for lower-volume applications.