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Bourns 3590S-2-104 Wirewound Potentiometer Equivalent & Substitute Parts
Part Overview
The Bourns 3590S-2-104 is a 100k Ohm, 2W wirewound linear potentiometer designed for panel mount applications with a 10-turn adjustment mechanism. This component is classified as obsolete, which necessitates identification of active equivalent parts to maintain supply chain continuity and ensure long-term availability for new designs and production runs.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 100k Ohm |
| Power Rating | 2W |
| Number of Turns | 10 |
| Taper | Linear |
| Resistive Material | Wirewound |
| Termination Style | Solder Lug |
| Mounting Type | Panel Mount |
| Bushing Thread | 3/8-32 |
| Body Diameter | 0.875" (22.23mm) |
| Actuator Type | Slotted |
| Temperature Coefficient | ±50ppm/°C |
| Tolerance | ±5% |
Substitute Part Grouping Explanation
The 3590S-2-104L qualifies as a direct substitute based on identical electrical and mechanical parameters: 100k Ohm resistance, 2W power rating, 10-turn wirewound construction, linear taper, solder lug termination, and panel mount configuration with matching bushing thread (3/8-32) and body dimensions. The substitution is valid because all critical parameters that determine functional compatibility remain unchanged between the main part and the substitute.
The primary distinction between these parts is product status and compliance certification. The 3590S-2-104 is obsolete, while the 3590S-2-104L is active production. Additionally, the substitute part carries RoHS3 compliance and REACH affected status, whereas the original part is RoHS non-compliant and REACH unaffected.
Parameter Comparison
| Parameter | 3590S-2-104 | 3590S-2-104L | Match |
|---|---|---|---|
| Resistance (Ohms) | 100k | 100k | ✓ |
| Power (Watts) | 2W | 2W | ✓ |
| Number of Turns | 10 | 10 | ✓ |
| Taper | Linear | Linear | ✓ |
| Resistive Material | Wirewound | Wirewound | ✓ |
| Termination Style | Solder Lug | Solder Lug | ✓ |
| Mounting Type | Panel Mount | Panel Mount | ✓ |
| Bushing Thread | 3/8-32 | 3/8-32 | ✓ |
| Body Diameter | 0.875" (22.23mm) | 0.875" (22.23mm) | ✓ |
| Actuator Type | Slotted | Slotted | ✓ |
| Temperature Coefficient | ±50ppm/°C | ±50ppm/°C | ✓ |
| Tolerance | ±5% | ±5% | ✓ |
| Product Status | Obsolete | Active | — |
| RoHS Status | RoHS non-compliant | RoHS3 Compliant | — |
| REACH Status | REACH Unaffected | REACH Affected | — |
Engineering Selection Recommendations
The 3590S-2-104L is the appropriate selection for new designs and ongoing production requirements. This part maintains full electrical and mechanical compatibility with the obsolete 3590S-2-104 while offering the advantage of active production status, ensuring reliable long-term supply availability.
For applications subject to RoHS3 compliance requirements, the 3590S-2-104L satisfies regulatory mandates. Organizations operating in REACH-regulated markets should account for the REACH affected status of the substitute part during procurement and documentation processes.
The obsolete status of the 3590S-2-104 creates supply risk for existing inventory-dependent operations. Transition to the 3590S-2-104L eliminates this risk without requiring circuit redesign or mechanical modification.
Frequently Asked Questions (FAQ)
Q: Can the 3590S-2-104L be used as a direct replacement for the 3590S-2-104 in existing designs?
A: Yes. All electrical parameters (resistance, power rating, tolerance, temperature coefficient) and mechanical parameters (mounting type, bushing thread, body dimensions, actuator configuration) are identical. No circuit or mechanical modifications are required.
Q: What is the difference between the 3590S-2-104 and 3590S-2-104L?
A: The primary differences are product status and regulatory compliance. The 3590S-2-104 is obsolete and RoHS non-compliant, while the 3590S-2-104L is in active production and RoHS3 compliant. Functionally and mechanically, they are equivalent.
Q: Why is the 3590S-2-104 listed as obsolete?
A: Obsolescence indicates that the manufacturer has discontinued production of this specific part number. The 3590S-2-104L represents the current production equivalent within the same product series.
Q: Does the packaging difference affect compatibility?
A: No. The 3590S-2-104 is supplied in standard packaging, while the 3590S-2-104L is supplied in bulk packaging. Packaging format does not affect electrical or mechanical performance. Selection between packaging options depends on procurement volume and logistics requirements.
Q: Are there any compliance considerations when switching to the 3590S-2-104L?
A: The 3590S-2-104L carries RoHS3 compliance certification, making it suitable for applications in regulated markets. The part is also REACH affected, requiring appropriate documentation in supply chains subject to REACH regulations. Verify that your application and market requirements align with these compliance statuses.
Q: What inventory status should I expect for the 3590S-2-104L?
A: The 3590S-2-104L is in active production with substantial inventory availability (9,470 pieces in stock as of the reference date), ensuring reliable procurement for both immediate and planned requirements.
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