CMDA19DR7D1S Red LED 0603 SMD Equivalent & Substitute Parts

Part Overview

The CMDA19DR7D1S is a red diffused LED in 0603 (1608 Metric) surface mount package manufactured by Visual Communications Company (VCC). This component is classified as obsolete, indicating discontinued production and limited availability. The part functions as a red LED indication element with a forward voltage of 1.8V and 17mcd brightness rating, designed for standard discrete LED applications in compact form factors.

Due to obsolete status and finite inventory, identifying equivalent substitute parts is necessary for design continuity, production planning, and long-term component sourcing strategy. Substitute parts must maintain electrical compatibility (forward voltage, current rating, viewing angle) and mechanical compatibility (package dimensions, mounting type, height profile).

Substiute Parts

CMDA19DR7D1S

Visual Communications Company - VCCIn Stock: 5113CMDA19DR7D1S Datasheet

Current PartRFQ

HSMH-C191

Broadcom LimitedIn Stock: 49327HSMH-C191 Datasheet

DirectRFQ

ASMT-RH45-AQ502

Broadcom LimitedIn Stock: 2062ASMT-RH45-AQ502 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMDA19DR7D1S are classified based on alignment with critical electrical and mechanical parameters:

Direct Substitutes maintain all critical parameters: red color, diffused lens, 0603 package, 1.8V forward voltage, 20mA test current, surface mount configuration, and equivalent physical dimensions. These parts satisfy full functional and mechanical compatibility.

Similar Substitutes maintain most critical parameters but may have minor variations in non-critical specifications such as millicandela rating, viewing angle, or height profile. These parts are compatible for applications where the specific variation does not impact circuit performance or mechanical clearance.

The substitution logic is based strictly on the following allowed parameters:

• Color (Red)
• Lens Transparency (Diffused)
• Package Type (0603 / 1608 Metric)
• Forward Voltage (1.8V nominal)
• Test Current (20mA)
• Mounting Type (Surface Mount)
• Physical dimensions (1.60mm L x 0.80mm W)
• RoHS compliance status

Parameter Comparison

Engineering Selection Recommendations

HSMH-C191 (Broadcom Limited) is the primary direct substitute for CMDA19DR7D1S. This part maintains identical electrical specifications (1.8V forward voltage, 20mA test current, 17mcd brightness) and mechanical compatibility (0603 package, 1.60mm x 0.80mm dimensions, 0.60mm height). Both parts are ROHS3 compliant and share the same peak wavelength (660nm). The HSMH-C191 is classified as obsolete, matching the status of the main part. Current inventory of 49,300 units provides adequate supply for production planning. The primary difference is moisture sensitivity level (MSL 2A vs. MSL 1), which requires standard moisture control procedures during storage and handling.

ASMT-RH45-AQ502 (Broadcom Limited) is a similar substitute suitable for applications where minor parameter variations are acceptable. This part maintains red color, diffused lens, 0603 package, 20mA test current, and surface mount configuration. The ASMT-RH45-AQ502 is active product status, ensuring long-term availability. Key differences include: viewing angle reduced to 145° (versus 170°), height reduced to 0.45mm (versus 0.60mm), and forward voltage and millicandela rating not specified in available documentation. The reduced height profile provides advantage for space-constrained applications. This part is suitable for new designs or applications where the narrower viewing angle does not impact optical performance requirements.

Selection between HSMH-C191 and ASMT-RH45-AQ502 depends on application requirements: choose HSMH-C191 for direct replacement requiring identical specifications; choose ASMT-RH45-AQ502 for new designs prioritizing long-term availability and reduced height profile.

Frequently Asked Questions (FAQ)

Q: Can HSMH-C191 be used as a direct replacement for CMDA19DR7D1S in existing designs?

A: Yes. HSMH-C191 maintains all critical electrical parameters (1.8V forward voltage, 20mA test current, 17mcd brightness) and mechanical compatibility (0603 package, identical dimensions and height). The primary consideration is moisture sensitivity level (MSL 2A requires 4-week storage limit versus unlimited for MSL 1), which requires standard moisture control procedures during component handling and storage.

Q: What is the difference between HSMH-C191 and ASMT-RH45-AQ502?

A: HSMH-C191 is a direct substitute with identical specifications to CMDA19DR7D1S. ASMT-RH45-AQ502 is a similar substitute with the same package and color but differs in viewing angle (145° versus 170°) and height (0.45mm versus 0.60mm). ASMT-RH45-AQ502 has active product status, ensuring long-term availability, while HSMH-C191 is obsolete. Forward voltage and brightness specifications are not provided for ASMT-RH45-AQ502.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. CMDA19DR7D1S, HSMH-C191, and ASMT-RH45-AQ502 are all ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the impact of different moisture sensitivity levels?

A: CMDA19DR7D1S has MSL 1 (unlimited storage), while HSMH-C191 and ASMT-RH45-AQ502 have MSL 2A (4-week storage limit). MSL 2A requires components to be stored in moisture-controlled environments and used within 4 weeks of package opening. Standard moisture control procedures (desiccant storage, controlled humidity) are required during handling and assembly.

Q: Which substitute part should be selected for new product designs?

A: ASMT-RH45-AQ502 is recommended for new designs due to active product status, ensuring long-term availability and supply continuity. This part maintains all critical functional parameters (red color, diffused lens, 0603 package, 20mA test current, surface mount configuration) while offering reduced height profile (0.45mm) for space-constrained applications. Verify that the 145° viewing angle meets application optical requirements.

Q: Can ASMT-RH45-AQ502 be used in applications requiring 1.8V forward voltage specification?

A: Forward voltage is not specified in available documentation for ASMT-RH45-AQ502. If 1.8V forward voltage is a critical circuit design parameter, HSMH-C191 is the appropriate choice, as it maintains this specification. For applications where forward voltage tolerance is wider or not critical, ASMT-RH45-AQ502 may be suitable pending verification with the manufacturer.

Q: Are the physical dimensions identical across all three parts?

A: Length and width dimensions are identical (1.60mm L x 0.80mm W) across CMDA19DR7D1S, HSMH-C191, and ASMT-RH45-AQ502. Height differs: CMDA19DR7D1S and HSMH-C191 are 0.60mm maximum height, while ASMT-RH45-AQ502 is 0.45mm maximum height. Verify clearance requirements in PCB layout before selecting ASMT-RH45-AQ502 for space-constrained applications.