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HSMF-C655 LED Bicolor Differential Chip SMD - Equivalent & Substitute Parts
Part Overview
The HSMF-C655 is a bicolor differential LED chip in 1210 (3225 Metric) surface mount package manufactured by Broadcom Limited. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The 1210 package format and surface mount configuration define the primary mechanical compatibility parameters for equivalent components.
Substiute Parts
Key Parameters
| Parameter | HSMF-C655 Value |
|---|---|
| Manufacturer | Broadcom Limited |
| Package / Case | 1210 (3225 Metric) |
| Supplier Device Package | Chip LED |
| Size / Dimension | 3.20mm L x 2.70mm W |
| Height (Max) | 1.10mm |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 2A (4 Weeks) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution for the HSMF-C655 is determined by the following criteria:
Primary Mechanical Compatibility:
- Package format: 1210 (3225 Metric) or equivalent footprint
- Mounting type: Surface Mount
- Physical dimensions: 3.20mm L x 2.70mm W with maximum height of 1.10mm
Electrical Compatibility:
- Bicolor (green/red) or single-color LED configuration
- Forward voltage (Vf) range: 1.7V to 2.2V across color channels
- Test current: 20mA standard
- Wavelength ranges: Green 565-572nm, Red 626-660nm
Regulatory & Environmental:
- RoHS3 compliance preferred for new designs
- MSL rating consideration for storage and handling
- REACH compliance status
Substitute parts are grouped into two categories: direct Broadcom equivalents and cross-manufacturer alternatives that meet the mechanical and electrical parameters.
Parameter Comparison
| Parameter | HSMF-C655 | HSMF-C155 | SML-LX1210IGC-TR | LTST-C155JCKT | CMD1522SRUGCTR8 | QTLP650C74TR |
|---|---|---|---|---|---|---|
| Manufacturer | Broadcom | Broadcom | Lumex | Lite-On | VCC | onsemi |
| Package / Case | 1210 (3225 Metric) | 1210 (3225 Metric) | 1210 (3225 Metric) | 1210 (3225 Metric) | 1210 (3225 Metric) | 1210 (3225 Metric) |
| Size / Dimension | 3.20mm L x 2.70mm W | 3.20mm L x 2.70mm W | 3.20mm L x 2.70mm W | 3.20mm L x 2.70mm W | 3.20mm L x 2.70mm W | 3.20mm L x 2.70mm W |
| Height (Max) | 1.10mm | 1.10mm | 1.10mm | 1.10mm | 1.10mm | 1.30mm |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Color Configuration | Bicolor Differential | Green, Red Independent | Green, Red Independent | Green, Red Independent | Green, Red Independent | Green, Red Independent |
| Vf (Typ) Green | - | 2.2V | 2.2V | 2.1V | 2.1V | 2V |
| Vf (Typ) Red | - | 2.1V | 2V | 1.8V | 1.7V | 1.9V |
| Current - Test | - | 20mA | 20mA | 20mA | 20mA | 20mA |
| Wavelength - Peak Green | - | 570nm | 565nm | 565nm | 565nm | 565nm |
| Wavelength - Peak Red | - | 630nm | 635nm | 660nm | 660nm | 660nm |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | Obsolete |
| Product Status | Obsolete | Active | Active | Active | Active | Obsolete |
| MSL Rating | 2A (4 Weeks) | 2A (4 Weeks) | 3 (168 Hours) | 3 (168 Hours) | 2 (1 Year) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Recommendation - Direct Broadcom Equivalent: HSMF-C155 is the direct Broadcom substitute for HSMF-C655. It maintains identical mechanical specifications (1210 package, 3.20mm x 2.70mm x 1.10mm), operates at compatible forward voltages (2.2V Green, 2.1V Red), and is currently in active production status with ROHS3 compliance. This part is preferred for designs requiring manufacturer continuity and proven compatibility.
Active Production Alternatives: For designs requiring active production status and ROHS3 compliance, the following parts provide equivalent functionality within the 1210 package format:
- SML-LX1210IGC-TR (Lumex): Green/Red independent configuration, 2.2V/2V forward voltages, 160° viewing angle, ROHS3 compliant, active status
- LTST-C155JCKT (Lite-On): Green/Red independent configuration, 2.1V/1.8V forward voltages, 130° viewing angle, ROHS3 compliant, active status
- CMD1522SRUGCTR8 (VCC): Green/Red independent configuration, 2.1V/1.7V forward voltages, ROHS3 compliant, active status
Obsolete Status Alternatives: QTLP650C74TR (onsemi) and QTLP650C24TR (onsemi) maintain 1210 package compatibility but carry obsolete product status. These are suitable only for legacy system maintenance where active production alternatives are not feasible.
Compliance Consideration: The original HSMF-C655 is RoHS non-compliant. All recommended active substitutes are ROHS3 compliant, meeting current regulatory requirements for new designs and production.
Frequently Asked Questions (FAQ)
Q: Can HSMF-C155 be used as a direct replacement for HSMF-C655? A: Yes. HSMF-C155 is the direct Broadcom equivalent. Both parts share identical 1210 (3225 Metric) package dimensions (3.20mm L x 2.70mm W x 1.10mm max height), surface mount configuration, and compatible electrical parameters. HSMF-C155 is currently in active production with ROHS3 compliance.
Q: What is the difference between bicolor differential and independent color configurations? A: The HSMF-C655 uses bicolor differential configuration, while most substitutes use independent green/red configuration. Independent configuration allows separate control of each color through individual anode/cathode connections, providing greater design flexibility. Both configurations fit the same 1210 footprint.
Q: Are there substitute parts available in different package sizes? A: The substitute list provided focuses on 1210 (3225 Metric) package compatibility to maintain PCB footprint compatibility. APB3025ESGC-F01 (Kingbright) and BRPY1201W-TR (Stanley Electric) use 4-SMD package format with different footprints and are not mechanically interchangeable without PCB redesign.
Q: What is the significance of MSL (Moisture Sensitivity Level) ratings? A: MSL ratings determine storage and handling requirements. HSMF-C655 and HSMF-C155 are rated 2A (4 weeks), requiring controlled storage conditions. QTLP650C24TR and QTLP650C74TR are rated MSL 1 (unlimited), requiring no special moisture control. Higher MSL ratings provide more flexible supply chain handling.
Q: Which substitute offers the best viewing angle? A: SML-LX1210IGC-TR and SML-LX1210GGC-TR both provide 160° viewing angle, the widest among 1210 package substitutes. LTST-C155JCKT offers 130° viewing angle. Viewing angle selection depends on specific application requirements for light distribution.
Q: Are all recommended substitutes ROHS3 compliant? A: All active production substitutes (HSMF-C155, SML-LX1210IGC-TR, LTST-C155JCKT, CMD1522SRUGCTR8) are ROHS3 compliant. Obsolete alternatives (QTLP650C24TR, QTLP650C74TR) do not have RoHS compliance status specified. For new designs, ROHS3 compliant parts are required.
Q: What forward voltage range should be considered for circuit design? A: Green channel forward voltages range from 2.0V to 2.2V across substitutes. Red channel forward voltages range from 1.7V to 2.1V. Circuit designs should accommodate this range or select a specific substitute with matching voltage specifications to the original design intent.
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