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CT6W502 Trimmer Potentiometer - Equivalent & Substitute Parts
Part Overview
The CT6W502 is a 5 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based, single-turn adjustment component features PC pin termination and top adjustment capability, housed in a square 7.00mm x 7.00mm package. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement without circuit redesign.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 5 kOhms |
| Power Rating | 0.5W (1/2W) |
| Tolerance | ±10% |
| Temperature Coefficient | ±100ppm/°C |
| Number of Turns | 1 Turn |
| Adjustment Type | Top Adjustment |
| Resistive Material | Cermet |
| Mounting Type | Through Hole |
| Termination Style | PC Pins |
| Package Dimensions | Square - 7.00mm x 7.00mm |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the CT6W502 are qualified based on strict electrical and mechanical parameter matching:
Electrical Parameters (Must Match):
- Resistance value: 5 kOhms
- Power rating: 0.5W (1/2W)
- Tolerance: ±10%
- Temperature coefficient: ±100ppm/°C
- Number of turns: 1 Turn
- Resistive material: Cermet
Mechanical Parameters (Must Match):
- Adjustment type: Top Adjustment
- Mounting type: Through Hole
- Termination style: PC Pins
- Package footprint: Square configuration, 7.00mm x 7.00mm nominal
All identified substitutes meet these criteria and are directly interchangeable at the circuit board level without modification to PCB layout or schematic design.
Parameter Comparison
| Parameter | CT6W502 (Vishay) | CT-6EW502 (Nidec) | 3362H-1-502 (Bourns) |
|---|---|---|---|
| Resistance | 5 kOhms | 5 kOhms | 5 kOhms |
| Power Rating | 0.5W | 0.5W | 0.5W |
| Tolerance | ±10% | ±10% | ±10% |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C |
| Number of Turns | 1 | 1 | 1 |
| Adjustment Type | Top Adjustment | Top Adjustment | Top Adjustment |
| Resistive Material | Cermet | Cermet | Cermet |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Termination Style | PC Pins | PC Pins | PC Pins |
| Package Dimensions | 7.00mm x 7.00mm (Square) | 7.00mm x 7.00mm (Square) | 6.99mm x 6.60mm (Rectangular) |
| Product Status | Obsolete | Active | Active |
| RoHS Status | Non-compliant | RoHS3 Compliant | Non-compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Not Applicable |
Engineering Selection Recommendations
CT-6EW502 (Nidec Components Corporation) is the primary substitute for the obsolete CT6W502. This part maintains identical electrical specifications and package footprint while offering active product status and RoHS3 compliance. The CT-6EW502 is available in bulk packaging with 810 units in stock, providing supply continuity for production environments.
3362H-1-502 (Bourns Inc.) serves as an alternative substitute with all matching electrical parameters. The Trimpot® 3362 series offers sealed construction and active product status. Package dimensions are nominally equivalent (6.99mm x 6.60mm rectangular versus 7.00mm x 7.00mm square), maintaining PCB compatibility within standard manufacturing tolerances. This part is available in tube packaging with 987 units in stock. Note that REACH compliance status differs from the primary substitute.
Both substitutes are electrically and mechanically compatible with the original CT6W502 specification and support direct board-level replacement.
Frequently Asked Questions (FAQ)
Q: Can CT-6EW502 and 3362H-1-502 be used interchangeably with CT6W502?
A: Yes. Both substitutes match all critical electrical parameters (5 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C) and mechanical specifications (1-turn top adjustment, through-hole PC pin termination, cermet resistive element). Package dimensions are within standard manufacturing tolerances for PCB footprint compatibility.
Q: What is the difference between the two substitute options?
A: CT-6EW502 maintains the exact square package footprint (7.00mm x 7.00mm) and offers RoHS3 compliance. The 3362H-1-502 uses a rectangular package (6.99mm x 6.60mm) and is part of the sealed Trimpot® 3362 series. Both are electrically identical and functionally interchangeable.
Q: Why is the original CT6W502 marked as obsolete?
A: The CT6W502 is no longer manufactured by Vishay Beyschlag/Draloric/BC Components. Active substitutes from Nidec and Bourns provide equivalent performance and ensure supply availability for new designs and maintenance applications.
Q: Are there compliance differences between the substitutes?
A: CT-6EW502 is RoHS3 compliant, while 3362H-1-502 is RoHS non-compliant. Both are REACH Unaffected or REACH Affected respectively. Select based on your application's regulatory requirements.
Q: What packaging options are available?
A: CT-6EW502 is supplied in bulk packaging (810 units available). 3362H-1-502 is supplied in tube packaging (987 units available). Confirm packaging requirements with your procurement process.
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