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PM5RTW12.0 Equivalent & Substitute Parts
Part Overview
The PM5RTW12.0 is a panel-mounted LED indicator manufactured by Bivar Inc., featuring a red clear lens with 12-inch wire leads. This component is classified as obsolete, indicating discontinued production and potential supply constraints. The substitute part PM5RDW12.0 provides functional equivalence with updated product status and availability, making it the primary alternative for new designs and replacement applications.
Substiute Parts
Key Parameters
| Parameter | Value | Significance for Substitution |
|---|---|---|
| Voltage (Vf Typ) | 2.1V | Critical - must match for direct circuit compatibility |
| Current (If Max) | 20mA | Critical - determines series resistor sizing |
| Lamp Color | Red | Critical - defines visual indication function |
| Lens Size | 5mm, T-1 3/4 | Critical - determines panel cutout compatibility |
| Panel Cutout Shape | Round | Critical - mechanical fit requirement |
| Panel Cutout Dimensions | 0.25" (6.35mm) | Critical - mechanical fit requirement |
| Termination Style | Wire Leads - 12" (304.80mm) | Critical - connection method and routing |
| Lens Style | Round with Domed Top | Important - affects light distribution and appearance |
| Millicandela Rating | 2mcd | Important - brightness specification |
| Wavelength - Peak | 700nm | Important - color specification |
Substitute Part Grouping Explanation
The PM5RDW12.0 qualifies as a direct substitute for PM5RTW12.0 based on the following matching parameters:
Electrical Compatibility:
- Forward voltage: 2.1V (identical)
- Maximum current: 20mA (identical)
- Wavelength peak: 700nm (identical)
- Millicandela rating: 2mcd (identical)
Mechanical Compatibility:
- Lens size: 5mm, T-1 3/4 (identical)
- Panel cutout shape: Round (identical)
- Panel cutout dimensions: 0.25" (6.35mm) (identical)
- Termination style: Wire Leads - 12" (304.80mm) (identical)
- Lens style: Round with Domed Top (identical)
Differentiating Parameter:
- Lens transparency: PM5RTW12.0 features Clear lens; PM5RDW12.0 features Diffused lens
- Viewing angle: PM5RTW12.0 has 35° viewing angle; PM5RDW12.0 has 45° viewing angle
The diffused lens of PM5RDW12.0 provides a wider viewing angle (45° versus 35°), which represents an enhancement in visibility characteristics while maintaining all critical electrical and mechanical specifications.
Parameter Comparison
| Parameter | PM5RTW12.0 (Main Part) | PM5RDW12.0 (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Bivar Inc. | Bivar Inc. | Identical |
| Series | PM5 | PM5 | Identical |
| Type | LED | LED | Identical |
| Lamp Color | Red | Red | Identical |
| Lens Color | Red | Red | Identical |
| Lens Transparency | Clear | Diffused | Different |
| Voltage (Vf Typ) | 2.1V | 2.1V | Identical |
| Current (If Max) | 20mA | 20mA | Identical |
| Panel Cutout Shape | Round | Round | Identical |
| Panel Cutout Dimensions | 0.25" (6.35mm) | 0.25" (6.35mm) | Identical |
| Lens Size | 5mm, T-1 3/4 | 5mm, T-1 3/4 | Identical |
| Lens Style | Round with Domed Top | Round with Domed Top | Identical |
| Millicandela Rating | 2mcd | 2mcd | Identical |
| Wavelength - Peak | 700nm | 700nm | Identical |
| Viewing Angle | 35° | 45° | Different |
| Termination Style | Wire Leads - 12" (304.80mm) | Wire Leads - 12" (304.80mm) | Identical |
| Product Status | Obsolete | Active | Different |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Identical |
| ECCN | EAR99 | EAR99 | Identical |
| HTSUS | 8541.41.0000 | 8541.41.0000 | Identical |
Engineering Selection Recommendations
For Obsolete Part Replacement: The PM5RDW12.0 is the designated substitute for PM5RTW12.0. The obsolete status of PM5RTW12.0 necessitates transition to the active PM5RDW12.0 for ongoing supply assurance. All critical electrical parameters (2.1V, 20mA) and mechanical specifications (panel cutout, wire leads) are identical, ensuring direct circuit and mechanical compatibility.
Lens Transparency Consideration: The transition from clear to diffused lens represents a functional enhancement. The diffused lens increases the viewing angle from 35° to 45°, improving visibility across a wider range of observation angles. This change does not degrade performance and is suitable for applications where enhanced visibility is beneficial or neutral.
Compliance and Certifications: Both parts maintain identical Moisture Sensitivity Level (MSL 1 - Unlimited), ECCN classification (EAR99), and HTSUS code (8541.41.0000). The PM5RDW12.0 includes RoHS3 compliance certification, providing additional environmental compliance assurance for new designs.
Supply Chain: PM5RDW12.0 inventory (759 Pcs) exceeds PM5RTW12.0 inventory (687 Pcs), with active product status ensuring continued availability for future procurement.
Frequently Asked Questions (FAQ)
Q: Can PM5RDW12.0 replace PM5RTW12.0 in existing circuits without modification?
A: Yes. The electrical specifications (2.1V forward voltage, 20mA maximum current) and mechanical specifications (panel cutout dimensions, wire lead length) are identical. No circuit modifications or panel alterations are required.
Q: What is the difference between the clear and diffused lens options?
A: PM5RTW12.0 features a clear lens with a 35° viewing angle, providing focused light output in a narrower cone. PM5RDW12.0 features a diffused lens with a 45° viewing angle, distributing light across a wider observation range. Both maintain identical brightness (2mcd) and color (700nm peak wavelength).
Q: Why is PM5RTW12.0 listed as obsolete?
A: Obsolete status indicates the manufacturer has discontinued production. PM5RDW12.0 is the active replacement, ensuring long-term supply availability and design continuity.
Q: Are there any compliance differences between the two parts?
A: Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. PM5RDW12.0 includes RoHS3 compliance certification, which is relevant for applications subject to RoHS requirements.
Q: Will the wider viewing angle of PM5RDW12.0 affect my application?
A: The 45° viewing angle of PM5RDW12.0 is equal to or wider than the 35° angle of PM5RTW12.0. Applications designed for the original 35° angle will function with the wider angle. Applications requiring a narrower viewing angle should evaluate the diffused lens characteristics in their specific optical environment.
Q: Are the wire lead lengths identical?
A: Yes. Both parts feature 12-inch (304.80mm) wire leads, ensuring identical routing and connection characteristics.
Q: What is the panel cutout requirement for both parts?
A: Both parts require a 0.25-inch (6.35mm) round panel cutout. Existing panel designs are compatible with both parts without modification.
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