DC1112H-TR Equivalent & Substitute Parts

Part Overview

The DC1112H-TR is a blue-green 505nm LED indication component manufactured by Stanley Electric Co, configured as a discrete 3.3V surface mount device in 0805 (2012 Metric) package format. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The component features a diffused white lens with 34mcd brightness rating and 150° viewing angle, designed for standard LED indication applications requiring blue-green spectral output.

Substiute Parts

DC1112H-TR

Stanley Electric CoIn Stock: 993DC1112H-TR Datasheet

Current PartRFQ

HSMN-C170

Broadcom LimitedIn Stock: 23973HSMN-C170 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DC1112H-TR is based on alignment across the following critical parameters:

Package Compatibility: The substitute part must utilize 0805 (2012 Metric) surface mount package with equivalent physical dimensions (2.00mm L x 1.25mm W) to ensure PCB footprint compatibility without layout redesign.

Electrical Compatibility: Forward voltage (Vf) must match or remain within acceptable circuit operating ranges. The DC1112H-TR operates at 3.3V typical, establishing the primary electrical constraint for substitute selection.

Optical Characteristics: While the DC1112H-TR produces blue-green output at 505nm dominant wavelength, substitute parts may operate at adjacent wavelengths within the blue spectrum (470nm-505nm range) provided the application permits color variation. Brightness rating (millicandela) and viewing angle should remain within comparable ranges to maintain functional equivalence in indication applications.

Mechanical Fit: Maximum height and lens dimensions must accommodate existing PCB assembly constraints. The DC1112H-TR maximum height of 0.90mm establishes the upper limit for substitute components.

Product Status: Active production status of substitute parts ensures ongoing availability and supply chain continuity, addressing the obsolescence of the original DC1112H-TR.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: HSMN-C170 (Broadcom Limited) is the qualified equivalent for DC1112H-TR replacement based on the following engineering criteria:

Electrical Compatibility: Both components operate at 3.3V forward voltage, ensuring direct circuit compatibility without modification to current-limiting resistor networks or power supply specifications.

Package Compatibility: Identical 0805 (2012 Metric) surface mount package and footprint dimensions (2.00mm L x 1.25mm W) permit direct PCB layout substitution without redesign.

Optical Performance: While wavelength shifts from 505nm (blue-green) to 470nm (pure blue), the brightness rating remains equivalent at 35mcd versus 34mcd. The HSMN-C170 provides a wider 170° viewing angle compared to the DC1112H-TR's 150°, enhancing visibility in indication applications.

Physical Fit: The HSMN-C170 maximum height of 0.80mm is lower than the DC1112H-TR's 0.90mm, ensuring compatibility with existing PCB assembly clearances and component placement constraints.

Product Status & Compliance: The HSMN-C170 maintains active production status, eliminating supply chain risk associated with the obsolete DC1112H-TR. ROHS3 compliance and improved moisture sensitivity rating (2A versus 4) provide enhanced environmental and handling characteristics aligned with current manufacturing standards.

Design Consideration: Applications requiring strict blue-green (505nm) spectral output should evaluate whether the shift to pure blue (470nm) is acceptable for the intended indication function. In standard LED indication applications where color variation within the blue spectrum is permissible, the HSMN-C170 provides direct functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the HSMN-C170 be used as a direct replacement for DC1112H-TR without PCB modifications?

A: Yes. Both components share identical 0805 (2012 Metric) package dimensions and footprint specifications (2.00mm L x 1.25mm W). No PCB layout changes are required. The HSMN-C170's lower profile (0.80mm versus 0.90mm) provides additional clearance margin.

Q: What is the primary difference between these two parts?

A: The dominant wavelength differs: DC1112H-TR produces blue-green output at 505nm, while HSMN-C170 produces pure blue at 470nm. Both maintain equivalent brightness (34-35mcd) and identical 3.3V forward voltage. The color shift is the primary functional distinction.

Q: Is the color difference between 505nm and 470nm visually significant?

A: Yes. 505nm appears as blue-green (cyan-tinted), while 470nm appears as pure blue. The perceptual difference is noticeable in direct comparison. Applications with strict color requirements should evaluate whether this shift affects indication clarity or user interface consistency.

Q: Does the higher test current of HSMN-C170 (20mA versus 10mA) affect circuit design?

A: The test current specification indicates the measurement condition, not the required operating current. Both components operate at 3.3V forward voltage. Actual circuit current is determined by the series current-limiting resistor. Verify that existing resistor values provide appropriate brightness without exceeding absolute maximum ratings.

Q: Are there any handling or storage differences between these components?

A: Yes. The DC1112H-TR has MSL rating of 4 (72-hour floor life), while HSMN-C170 has MSL rating of 2A (4-week floor life). The HSMN-C170 is more tolerant of moisture exposure during storage and assembly, reducing bake-out requirements and improving manufacturing flexibility.

Q: Will the wider viewing angle of HSMN-C170 (170° versus 150°) affect circuit performance?

A: No. A wider viewing angle enhances visibility without degrading performance. The increased 170° viewing angle of HSMN-C170 provides superior indication visibility across a broader range of observer positions compared to the DC1112H-TR's 150° angle.

Q: Is ROHS3 compliance important for this substitution?

A: ROHS3 compliance ensures the component meets current environmental and regulatory standards for electronic equipment manufacturing. The HSMN-C170's ROHS3 compliance provides assurance of material composition and manufacturing process alignment with modern supply chain requirements.

Q: Can both parts be used interchangeably in existing production?

A: Yes, provided the application permits the wavelength shift from blue-green (505nm) to blue (470nm). For applications where strict spectral output is required, the color difference must be evaluated against functional requirements before implementation.