SM0603SRC Equivalent & Substitute Parts

Part Overview

The SM0603SRC is a red LED indication component manufactured by Bivar Inc., designed for surface mount applications in the 0603 (1608 Metric) package format. This discrete LED operates at a forward voltage of 1.85V with a dominant wavelength of 640nm and provides 28mcd luminous intensity. The component features a clear, colorless lens with a rectangular flat-top design and is currently in active production status.

Substitute parts are identified to address application requirements including inventory availability, alternative optical characteristics, packaging formats, and performance specifications within the red LED indication category.

Substiute Parts

SM0603SRC

Bivar Inc.In Stock: 885SM0603SRC Datasheet

Current PartRFQ

BR1111C-TR

Stanley Electric CoIn Stock: 19550BR1111C-TR Datasheet

SimilarRFQ

XZMDK53W-3

SunLEDIn Stock: 2672XZMDK53W-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SM0603SRC are qualified based on the following criteria:

Package Compatibility: All substitute parts utilize the 0603 (1608 Metric) surface mount package format, ensuring mechanical and electrical compatibility with existing PCB designs and assembly processes.

Electrical Parameters: Substitute parts operate within the red LED wavelength spectrum (630nm to 647nm dominant wavelength) with forward voltages ranging from 1.7V to 1.95V. All parts are rated for 20mA test current, maintaining compatibility with standard LED drive circuits.

Optical Characteristics: Substitute parts maintain the rectangular flat-top lens style and similar lens dimensions (1.00mm to 1.10mm x 0.80mm). Luminous intensity ratings range from 11.7mcd to 79mcd, accommodating applications with varying brightness requirements.

Compliance & Status: All substitute parts maintain ROHS3 compliance and are classified under the same HTSUS and ECCN codes. Product status varies between Active and Obsolete designations.

Packaging Format: Substitute parts are available in Tape & Reel (TR) or Cut Tape (CT) configurations, supporting different manufacturing and procurement workflows.

Parameter Comparison

Engineering Selection Recommendations

BR1111C-TR (Stanley Electric Co): This substitute part is classified as Obsolete product status. While it maintains full ROHS3 compliance and identical package dimensions, the Obsolete designation indicates discontinued manufacturing. This part is suitable only for legacy system maintenance or applications where long-term supply continuity is not required. The lower luminous intensity (11.7mcd versus 28mcd) and diffused lens transparency represent significant optical differences from the SM0603SRC.

XZMDK53W-3 (SunLED): This substitute part maintains Active product status with ROHS3 compliance and improved moisture sensitivity rating (MSL 3 versus MSL 4). The reduced maximum height (0.45mm versus 0.80mm) provides design flexibility for space-constrained applications. The higher luminous intensity (79mcd) and lower dominant wavelength (630nm) represent optical enhancements. Forward voltage tolerance (1.95V) remains within acceptable operating ranges for standard LED drive circuits. This part is suitable for new designs and ongoing production applications.

Both substitute parts maintain electrical compatibility through identical test current (20mA) and package format (0603/1608 Metric). Selection between substitutes depends on product lifecycle requirements, optical performance specifications, and available inventory.

Frequently Asked Questions (FAQ)

Q: Can BR1111C-TR be used as a direct replacement for SM0603SRC?

A: BR1111C-TR shares the same 0603 (1608 Metric) package format and surface mount configuration. However, the Obsolete product status, lower luminous intensity (11.7mcd versus 28mcd), and diffused lens transparency (versus clear) represent functional differences. Electrical compatibility exists through identical 20mA test current and similar forward voltage (1.7V versus 1.85V). Substitution is limited to applications where optical performance differences are acceptable and supply continuity is not critical.

Q: What are the key differences between XZMDK53W-3 and SM0603SRC?

A: Both parts operate in the red LED spectrum with identical 0603 (1608 Metric) package dimensions and 20mA test current. XZMDK53W-3 features higher luminous intensity (79mcd versus 28mcd), lower dominant wavelength (630nm versus 640nm), reduced maximum height (0.45mm versus 0.80mm), and improved moisture sensitivity rating (MSL 3 versus MSL 4). Forward voltage is slightly higher (1.95V versus 1.85V). These differences support applications requiring enhanced brightness or compact form factors.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SM0603SRC, BR1111C-TR, and XZMDK53W-3 are all ROHS3 compliant and share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications.

Q: What is the significance of product status (Active versus Obsolete)?

A: Active product status indicates ongoing manufacturing and supply availability. Obsolete status indicates discontinued production. BR1111C-TR is classified as Obsolete, limiting its suitability for new designs or applications requiring long-term component availability. SM0603SRC and XZMDK53W-3 maintain Active status, supporting both new and ongoing production requirements.

Q: How do viewing angle differences affect substitution?

A: SM0603SRC provides 130° viewing angle, BR1111C-TR provides 136° and 141° viewing angles, and XZMDK53W-3 provides 120° viewing angle. These differences affect light distribution characteristics. Narrower viewing angles (120°) concentrate light intensity in a smaller angular range, while wider angles (136°-141°) distribute light across a broader field. Selection depends on specific application requirements for light distribution and visibility.

Q: What is the impact of lens transparency differences?

A: SM0603SRC and XZMDK53W-3 feature clear lenses, providing direct light transmission with sharp color definition. BR1111C-TR features a diffused lens, which scatters light for broader, softer illumination. Clear lenses are suitable for applications requiring precise light direction and color accuracy. Diffused lenses are suitable for applications requiring uniform light distribution across a wider area.

Q: Can forward voltage differences affect circuit design?

A: Forward voltage differences (1.7V to 1.95V) are within acceptable tolerance ranges for standard LED drive circuits. SM0603SRC operates at 1.85V, BR1111C-TR at 1.7V, and XZMDK53W-3 at 1.95V. These variations require verification against specific circuit design parameters and current-limiting resistor calculations. All parts maintain compatibility with 20mA test current specifications.

Q: What does MSL (Moisture Sensitivity Level) indicate?

A: MSL rating indicates component sensitivity to moisture during storage and handling. SM0603SRC and BR1111C-TR are rated MSL 4 (72 Hours), requiring storage at controlled humidity levels. XZMDK53W-3 is rated MSL 3 (168 Hours), providing extended moisture tolerance. Lower MSL numbers indicate greater moisture resistance and longer allowable exposure times before component degradation.