FR1112C-TR Red 0603 SMD LED Equivalent & Substitute Parts

Part Overview

The FR1112C-TR is a red diffused 0603 (1608 Metric) surface mount LED manufactured by Stanley Electric Co. This component is classified as obsolete, with 5,300 pieces currently available in stock. The FR1112C-TR operates at a forward voltage of 1.9V with a test current of 20mA, delivering 45 millicandela of luminous intensity through a diffused white lens. The dominant wavelength is 626nm with a peak wavelength of 635nm.

Due to the obsolete product status, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability. Substitute parts must maintain compatibility across electrical characteristics, mechanical dimensions, and package specifications to ensure direct replacement capability in existing applications.

Substiute Parts

FR1112C-TR

Stanley Electric CoIn Stock: 5394FR1112C-TR Datasheet

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APT1608EC

KingbrightIn Stock: 88420APT1608EC Datasheet

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ASMT-RR45-AQ902

Broadcom LimitedIn Stock: 36489ASMT-RR45-AQ902 Datasheet

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HSMC-C197

Broadcom LimitedIn Stock: 7714HSMC-C197 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FR1112C-TR are selected based on strict alignment with the following critical parameters:

Primary Compatibility Criteria:

• Package / Case: 0603 (1608 Metric) surface mount
• Color: Red
• Mounting Type: Surface Mount
• Lens Transparency: Diffused (preferred for optical consistency)
• Voltage - Forward (Vf): 1.9V to 2.0V (acceptable operating range)
• Current - Test: 20mA (standard test condition)
• Wavelength - Dominant: 617nm to 626nm (red spectrum range)
• Size / Dimension: 1.60mm L x 0.80mm W (standard 0603 footprint)

Substitution Logic: All identified substitute parts maintain the 0603 (1608 Metric) package specification and surface mount configuration. Electrical parameters (forward voltage and test current) remain within acceptable tolerances for circuit compatibility. Optical characteristics (color, wavelength, and lens transparency) are preserved to maintain functional equivalence in indication applications.

The three substitute parts listed below satisfy these criteria with varying levels of parameter alignment to the original FR1112C-TR specification.

Parameter Comparison

Engineering Selection Recommendations

HSMC-C197 (Broadcom Limited) - Highest Compatibility

The HSMC-C197 provides the closest electrical and optical alignment to the FR1112C-TR. Forward voltage (1.9V), dominant wavelength (626nm), and viewing angle (130°) match the original specification exactly. Physical dimensions (1.60mm L x 0.80mm W) are identical. The diffused white lens maintains optical consistency. Product status is active with 7,667 pieces in stock. RoHS3 compliance and improved moisture sensitivity level (2A, 4 Weeks) provide enhanced reliability compared to the obsolete original. Height is reduced to 0.40mm, which may provide additional clearance benefits in constrained assemblies.

ASMT-RR45-AQ902 (Broadcom Limited) - Alternative with Enhanced Brightness

The ASMT-RR45-AQ902 maintains full package and mounting compatibility with identical physical dimensions and height (0.55mm). Forward voltage is 2V, requiring minimal circuit adjustment. Dominant wavelength (622nm) remains within the red spectrum. The diffused white lens preserves optical characteristics. Millicandela rating of 120mcd provides significantly higher luminous intensity compared to the original 45mcd, suitable for applications requiring increased visibility. Product status is active with 36,400 pieces in stock. RoHS3 compliance and superior moisture sensitivity level (2A, 4 Weeks) ensure long-term reliability.

APT1608EC (Kingbright) - Limited Compatibility

The APT1608EC maintains package and mounting specifications but introduces optical differences. Clear lens transparency (versus diffused) alters light distribution characteristics. Forward voltage is 2V. Dominant wavelength (617nm) shifts toward orange-red, affecting color perception. Millicandela rating of 8mcd is significantly lower than the original 45mcd, limiting brightness. This part is suitable only for applications where clear lens transparency and reduced brightness are acceptable. Product status is active with 88,400 pieces in stock. RoHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can the HSMC-C197 be used as a direct replacement for the FR1112C-TR without circuit modifications?

A: Yes. The HSMC-C197 operates at the same forward voltage (1.9V) and test current (20mA) as the FR1112C-TR. No circuit modifications are required. Physical dimensions and package specifications are identical, enabling direct PCB placement without layout changes.

Q: What is the impact of using ASMT-RR45-AQ902 with its 2V forward voltage instead of the original 1.9V?

A: The 0.1V increase in forward voltage is within acceptable tolerance for most LED circuit designs. Current-limiting resistor values may require minor adjustment to maintain the desired operating current. The change is typically negligible in applications using standard current-limiting resistor networks. Verify circuit design parameters for specific applications.

Q: Why does APT1608EC have significantly lower brightness (8mcd versus 45mcd)?

A: The APT1608EC uses a clear lens instead of a diffused lens. Clear lenses concentrate light output into a narrower beam, resulting in lower overall millicandela rating despite potentially higher peak intensity in the forward direction. The 120° viewing angle (versus 130° for the original) further restricts light distribution. This part is not suitable for applications requiring the original brightness specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three substitute parts (HSMC-C197, ASMT-RR45-AQ902, and APT1608EC) are confirmed RoHS3 compliant. The original FR1112C-TR does not specify RoHS status. All substitute parts meet current environmental and regulatory requirements.

Q: What is the significance of the different Moisture Sensitivity Levels (MSL)?

A: The FR1112C-TR has MSL 4 (72 Hours), indicating higher moisture sensitivity. Substitute parts have improved ratings: ASMT-RR45-AQ902 and HSMC-C197 both have MSL 2A (4 Weeks), providing superior moisture resistance. This improvement reduces risk of component degradation during storage and assembly processes, particularly in humid environments.

Q: Can the HSMC-C197 be used in applications where the original FR1112C-TR height (0.55mm) is critical?

A: The HSMC-C197 has a maximum height of 0.40mm, which is lower than the original 0.55mm. In applications with tight vertical clearance constraints, this reduced height provides additional margin. However, if the original height specification is a maximum limit that cannot be exceeded, the HSMC-C197 is fully compatible. If the height is a minimum requirement, verify that 0.40mm meets application needs.

Q: What inventory considerations should guide part selection?

A: ASMT-RR45-AQ902 has the highest inventory (36,400 pieces), followed by APT1608EC (88,400 pieces) and HSMC-C197 (7,667 pieces). For long-term production continuity, ASMT-RR45-AQ902 offers the best balance of compatibility and availability. HSMC-C197, despite lower inventory, provides the closest electrical match to the original specification.