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SM1204SPGC Equivalent & Substitute Parts
Part Overview
The SM1204SPGC is a green surface mount right-angle LED indicator manufactured by Bivar Inc., designed for 3.3V discrete applications in the 1204 (3210 Metric) package format. This component features a clear lens with 285mcd brightness at 525nm dominant wavelength and 110° viewing angle. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | SM1204SPGC |
| Manufacturer | Bivar Inc. |
| Product Status | Obsolete |
| Color | Green |
| Lens Color | Colorless |
| Lens Transparency | Clear |
| Package / Case | 1204 (3210 Metric) |
| Mounting Type | Surface Mount, Right Angle |
| Voltage - Forward (Vf) (Typ) | 3.3V |
| Current - Test | 20mA |
| Viewing Angle | 110° |
| Millicandela Rating | 285mcd |
| Wavelength - Dominant | 525nm |
| Lens Style | Rectangle with Domed Top |
| Lens Size | 2.00mm x 1.00mm |
| Size / Dimension | 3.20mm L x 1.00mm W |
| Height (Max) | 1.00mm |
| Moisture Sensitivity Level (MSL) | 4 (72 Hours) |
Substitute Part Grouping Explanation
Substitution eligibility for the SM1204SPGC is determined by strict adherence to the following electrical and mechanical parameters:
Mandatory Compatibility Parameters:
- Package / Case: 1204 (3210 Metric)
- Mounting Type: Surface Mount, Right Angle
- Voltage - Forward (Vf) (Typ): 3.3V
- Current - Test: 20mA
- Color: Green
- Lens Color: Colorless
- Lens Transparency: Clear
- Lens Style: Rectangle with Domed Top
- Lens Size: 2.00mm x 1.00mm
- Size / Dimension: 3.20mm L x 1.00mm W
- Height (Max): 1.00mm
- Viewing Angle: 110°
- Moisture Sensitivity Level (MSL): 4 (72 Hours)
Variable Parameters (Allowable Substitution Range):
- Wavelength - Dominant: 500nm to 525nm (green spectrum)
- Wavelength - Peak: 500nm to 523nm
- Millicandela Rating: 285mcd to 360mcd
- Product Status: Active alternatives acceptable for obsolete part
- Packaging: Tape & Reel (TR) acceptable as alternative to standard packaging
The identified substitute parts SM1204PGC and SM1204UPGC maintain all mandatory parameters while operating within the allowable wavelength and brightness ranges for green LED indication applications.
Parameter Comparison
| Parameter | SM1204SPGC (Main) | SM1204PGC (Substitute) | SM1204UPGC (Substitute) |
|---|---|---|---|
| Manufacturer | Bivar Inc. | Bivar Inc. | Bivar Inc. |
| Product Status | Obsolete | Active | Active |
| Color | Green | Green | Green |
| Lens Color | Colorless | Colorless | Colorless |
| Lens Transparency | Clear | Clear | Clear |
| Package / Case | 1204 (3210 Metric) | 1204 (3210 Metric) | 1204 (3210 Metric) |
| Mounting Type | Surface Mount, Right Angle | Surface Mount, Right Angle | Surface Mount, Right Angle |
| Voltage - Forward (Vf) (Typ) | 3.3V | 3.3V | 3.3V |
| Current - Test | 20mA | 20mA | 20mA |
| Viewing Angle | 110° | 110° | 110° |
| Millicandela Rating | 285mcd | 360mcd | 285mcd |
| Lens Style | Rectangle with Domed Top | Rectangle with Domed Top | Rectangle with Domed Top |
| Lens Size | 2.00mm x 1.00mm | 2.00mm x 1.00mm | 2.00mm x 1.00mm |
| Wavelength - Dominant | 525nm | 505nm | 515nm |
| Wavelength - Peak | 523nm | 500nm | 510nm |
| Size / Dimension | 3.20mm L x 1.00mm W | 3.20mm L x 1.00mm W | 3.20mm L x 1.00mm W |
| Height (Max) | 1.00mm | 1.00mm | 1.00mm |
| Moisture Sensitivity Level (MSL) | 4 (72 Hours) | 4 (72 Hours) | 4 (72 Hours) |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | Not specified | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
SM1204PGC Selection Criteria: SM1204PGC is an active product with ROHS3 compliance and REACH unaffected status. This substitute provides 360mcd brightness compared to the 285mcd of the main part, with dominant wavelength at 505nm within the green spectrum range. The increased brightness rating accommodates applications requiring enhanced visibility while maintaining identical electrical characteristics (3.3V forward voltage, 20mA test current) and mechanical compatibility (1204 package, right-angle surface mount, 110° viewing angle).
SM1204UPGC Selection Criteria: SM1204UPGC is an active product with ROHS3 compliance and REACH unaffected status. This substitute maintains the 285mcd brightness rating identical to the main part, with dominant wavelength at 515nm within the green spectrum range. The parametric equivalence in brightness rating makes this option suitable for direct replacement in applications where luminous intensity consistency is critical.
Both substitutes are available in Tape & Reel packaging format and maintain all mandatory mechanical and electrical parameters required for 1204 (3210 Metric) surface mount right-angle LED indicator applications.
Frequently Asked Questions (FAQ)
Q: Can SM1204PGC and SM1204UPGC be used interchangeably with SM1204SPGC?
A: Both parts are electrically and mechanically compatible with SM1204SPGC. Selection between them depends on brightness requirements. SM1204PGC provides 360mcd (higher brightness), while SM1204UPGC provides 285mcd (brightness-matched to original). Both operate at 3.3V forward voltage with 20mA test current in the 1204 package format.
Q: What is the significance of the wavelength differences between these parts?
A: All three parts operate in the green spectrum (500nm to 525nm dominant wavelength range). The wavelength variations (SM1204SPGC at 525nm, SM1204PGC at 505nm, SM1204UPGC at 515nm) represent different shades of green within acceptable LED indication standards. Visual color perception differences are minimal across this range for indicator applications.
Q: Why is SM1204SPGC classified as obsolete?
A: The obsolete status indicates the part is no longer in active production. SM1204PGC and SM1204UPGC are active alternatives that provide equivalent functionality with current manufacturing support and compliance certifications.
Q: Are there packaging differences between the main part and substitutes?
A: The main part SM1204SPGC packaging format is not specified in available data. Substitute parts SM1204PGC and SM1204UPGC are supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount applications. Both maintain identical component dimensions and mounting characteristics.
Q: Do the substitute parts meet current regulatory requirements?
A: Both SM1204PGC and SM1204UPGC are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components. The main part SM1204SPGC regulatory status is not specified in available documentation.
Q: What is the Moisture Sensitivity Level (MSL) requirement for these parts?
A: All three parts carry MSL 4 rating with 72-hour moisture sensitivity specification. This requires controlled storage and handling conditions during manufacturing and assembly processes.
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