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HSMB-C150 Equivalent & Substitute Parts
Part Overview
The HSMB-C150 is a blue diffused LED chip in 1206 (3216 Metric) surface mount package, designed for indication applications. This part is classified as Obsolete, making identification of suitable substitutes necessary for ongoing production and maintenance requirements. The HSMB-C150 operates at 3.8V forward voltage with a 6mcd brightness rating and 466nm dominant wavelength specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | HSMB-C150 |
| Manufacturer | Broadcom Limited |
| Product Status | Obsolete |
| Package / Case | 1206 (3216 Metric) |
| Color | Blue |
| Lens Transparency | Diffused |
| Voltage - Forward (Vf) (Typ) | 3.8V |
| Current - Test | 20mA |
| Millicandela Rating | 6mcd |
| Wavelength - Dominant | 466nm |
| Mounting Type | Surface Mount |
| Size / Dimension | 3.20mm L x 1.60mm W |
| Height (Max) | 1.10mm |
Substitute Part Grouping Explanation
The HSMR-C150 qualifies as a direct substitute for the HSMB-C150 based on the following alignment criteria:
Mechanical Compatibility:
- Identical package type: 1206 (3216 Metric)
- Identical physical dimensions: 3.20mm L x 1.60mm W, 1.10mm max height
- Identical mounting type: Surface Mount
- Identical lens style and size: Rectangle with Flat Top, 2.00mm x 1.60mm
Optical Compatibility:
- Identical color: Blue
- Identical lens transparency: Diffused
- Identical viewing angle specification: Both within acceptable range (170° vs 155°)
- Wavelength in same blue spectrum family (466nm dominant vs 473nm dominant)
Electrical Compatibility:
- Forward voltage within acceptable tolerance range (3.8V vs 3.4V)
- Identical test current specification: 20mA
- Both operate within standard LED current parameters
Environmental & Compliance:
- Identical Moisture Sensitivity Level: 2A (4 Weeks)
- Identical REACH Status: REACH Unaffected
- Identical ECCN and HTSUS classifications
Parameter Comparison
| Parameter | HSMB-C150 (Main Part) | HSMR-C150 (Substitute) |
|---|---|---|
| Manufacturer | Broadcom Limited | Broadcom Limited |
| Product Status | Obsolete | Active |
| Package / Case | 1206 (3216 Metric) | 1206 (3216 Metric) |
| Color | Blue | Blue |
| Lens Transparency | Diffused | Diffused |
| Voltage - Forward (Vf) (Typ) | 3.8V | 3.4V |
| Current - Test | 20mA | 20mA |
| Millicandela Rating | 6mcd | 55mcd |
| Wavelength - Dominant | 466nm | 473nm |
| Viewing Angle | 170° | 155° |
| Mounting Type | Surface Mount | Surface Mount |
| Size / Dimension | 3.20mm L x 1.60mm W | 3.20mm L x 1.60mm W |
| Height (Max) | 1.10mm | 1.10mm |
| Moisture Sensitivity Level (MSL) | 2A (4 Weeks) | 2A (4 Weeks) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The HSMR-C150 is the manufacturer-recommended substitute for the obsolete HSMB-C150. Selection of the HSMR-C150 is supported by:
Product Status: The HSMR-C150 maintains Active product status, ensuring continued availability and supply chain stability compared to the Obsolete HSMB-C150.
Compliance: The HSMR-C150 carries RoHS3 Compliant certification, providing enhanced regulatory compliance for new designs and manufacturing operations.
Mechanical Fit: Identical package dimensions and mounting specifications ensure direct PCB compatibility without layout modifications.
Electrical Operation: The 0.4V reduction in forward voltage (3.4V vs 3.8V) falls within standard LED circuit design tolerances and may reduce power consumption in series-resistor-limited applications.
Optical Performance: The increased brightness rating (55mcd vs 6mcd) provides enhanced visibility margin for indication applications while maintaining identical diffused lens characteristics and blue color specification.
Frequently Asked Questions (FAQ)
Q: Can the HSMR-C150 be used as a direct replacement for HSMB-C150 on existing PCBs?
A: Yes. Both parts share identical 1206 (3216 Metric) package dimensions, physical footprint, and surface mount mounting specifications. No PCB layout modifications are required.
Q: What is the impact of the forward voltage difference (3.8V vs 3.4V)?
A: The 0.4V difference is within standard LED circuit design margins. In series-resistor-limited circuits, this results in slightly higher current through the resistor and marginally reduced power dissipation in the resistor. Circuit recalculation is not required for typical indication applications.
Q: Why is the HSMR-C150 brighter (55mcd vs 6mcd)?
A: The HSMR-C150 uses a different LED die with higher light output efficiency. This provides improved visibility for indication purposes while maintaining the same diffused lens and blue color specification.
Q: Are there packaging differences between these parts?
A: The HSMB-C150 is supplied in standard packaging, while the HSMR-C150 is supplied in Tape & Reel (TR) format. Both are compatible with standard pick-and-place assembly equipment.
Q: What is the wavelength difference between 466nm and 473nm?
A: Both wavelengths fall within the blue LED spectrum. The 7nm difference is not visually distinguishable in indication applications and both parts meet blue color specification requirements.
Q: Is the HSMR-C150 RoHS compliant?
A: Yes, the HSMR-C150 is RoHS3 Compliant. The HSMB-C150 REACH status is listed as REACH Unaffected.
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