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| Part Number | LTL-4251 | LTL-4253 | LTL-4254 | LTL-4251N | LTL-4291 | LTL-4211 | LTL-4221 | LTL-4231 |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Lite-On Inc. | Lite-On Inc. | Lite-On Inc. | Lite-On Inc. | Lite-On Inc. | Lite-On Inc. | Lite-On Inc. | Lite-On Inc. |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active |
| Color | Yellow | Yellow | Yellow | Yellow | Red | Red | Red | Green |
| Configuration | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard |
| Lens Color | Yellow | Yellow | Yellow | Yellow | Orange | Red | Red | Green |
| Lens Transparency | Diffused | Diffused | Clear | Diffused | Diffused | Diffused | Diffused | Diffused |
| Millicandela Rating | 8.7mcd | 19mcd | 90mcd | 5.6mcd | 12.6mcd | 2.5mcd | 8.7mcd | 12.6mcd |
| Lens Style | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top |
| Lens Size | 3mm, T-1 | 5mm, T-1 3/4 | 5mm, T-1 3/4 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 |
| Voltage - Forward (Vf) (Typ) | 2.1V | 2.1V | 2.1V | 2.1V | 2V | 2.1V | 2V | 2.1V |
| Current - Test | 10mA | 10mA | 10mA | 10mA | 20mA | 10mA | 20mA | 10mA |
| Viewing Angle | 40° | 36° | 16° | 60° | 40° | 40° | 40° | 40° |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Wavelength - Dominant | 588nm | 588nm | 588nm | 588nm | 621nm | 657nm | 623nm | 569nm |
| Wavelength - Peak | 585nm | 585nm | 585nm | 585nm | 630nm | 697nm | 635nm | 565nm |
| Features | - | - | - | - | - | - | - | - |
| Package / Case | Radial | Radial | Radial | Radial | Radial | Radial | Radial | Radial |
| Supplier Device Package | T-1 | T-1 3/4 | T-1 3/4 | T-1 | T-1 | T-1 | T-1 | T-1 |
| Size / Dimension | - | - | - | - | - | - | - | - |
| Height (Max) | 6.55mm | 8.60mm | 8.60mm | 5.85mm | 6.55mm | 6.55mm | 6.55mm | 6.55mm |
