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Bourns 3386T-1-501 Equivalent & Substitute Parts
Part Overview
The Bourns 3386T-1-501 is a 500 Ohm, 0.5W through-hole trimmer potentiometer with PC pin termination, top adjustment, and cermet resistive material. This component is classified as Active product status. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and termination characteristics to ensure functional interchangeability in circuit applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 500 Ohms |
| Power Rating | 0.5W (1/2W) |
| Tolerance | ±10% |
| Temperature Coefficient | ±100ppm/°C |
| Number of Turns | 1 |
| Adjustment Type | Top Adjustment |
| Resistive Material | Cermet |
| Mounting Type | Through Hole |
| Termination Style | PC Pins |
Substitute Part Grouping Explanation
Substitute parts for the 3386T-1-501 are qualified based on the following critical parameters:
- Resistance value: 500 Ohms (exact match required)
- Power rating: 0.5W / 1/2W (exact match required)
- Tolerance: ±10% (exact match required)
- Temperature coefficient: ±100ppm/°C (exact match required)
- Number of turns: 1 (exact match required)
- Adjustment type: Top Adjustment (exact match required)
- Resistive material: Cermet (exact match required)
- Mounting type: Through Hole (exact match required)
- Termination style: PC Pins (exact match required)
All identified substitute parts meet these electrical and mechanical criteria. Variations in physical dimensions and packaging format do not affect functional substitution capability within the specified parameter constraints.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Power (W) | Tolerance | Temp Coeff (ppm/°C) | Turns | Adjustment | Material | Mounting | Termination | Packaging | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3386T-1-501 | Bourns Inc. | 500 Ω | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Tube | Non-compliant |
| 25PR500LF | TT Electronics/BI | 500 Ω | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Tube | Compliant |
| 72PR500LF | TT Electronics/BI | 500 Ω | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Bulk | ROHS3 Compliant |
| 82PR500LF | TT Electronics/BI | 500 Ω | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Bulk | ROHS3 Compliant |
Engineering Selection Recommendations
All three substitute parts (25PR500LF, 72PR500LF, 82PR500LF) satisfy the electrical and mechanical requirements for direct substitution with the 3386T-1-501.
The 25PR500LF is packaged in Tube format and carries RoHS Compliant status, matching the original packaging preference of the 3386T-1-501.
The 72PR500LF and 82PR500LF are supplied in Bulk packaging and carry ROHS3 Compliant certification, providing enhanced regulatory compliance for new designs.
Selection between substitute parts should be based on packaging requirements, inventory availability, and regulatory compliance mandates specific to the application and supply chain.
Frequently Asked Questions (FAQ)
Q: Can the 25PR500LF replace the 3386T-1-501 in existing designs?
A: Yes. The 25PR500LF matches all critical electrical parameters (500 Ohms, 0.5W, ±10% tolerance, ±100ppm/°C temperature coefficient, 1 turn, top adjustment, cermet material, through-hole mounting, PC pin termination). Physical dimension differences do not affect functional compatibility.
Q: What is the difference between the 72PR500LF and 82PR500LF?
A: Both parts are electrically identical and meet all substitution criteria. The primary difference is physical form factor: the 72PR500LF has a square 0.375" x 0.375" face, while the 82PR500LF has a round 0.250" diameter form. Selection depends on PCB layout constraints and available mounting space.
Q: Are there RoHS compliance differences between substitute options?
A: The 3386T-1-501 is RoHS non-compliant. The 25PR500LF is RoHS Compliant. The 72PR500LF and 82PR500LF are ROHS3 Compliant. For applications requiring RoHS compliance, any of the three substitutes are suitable.
Q: Does packaging format affect electrical performance?
A: No. Tube and Bulk packaging formats do not affect component electrical characteristics or performance. Packaging selection is based on supply chain requirements, handling procedures, and inventory management practices.
Q: Can multiple substitute parts be used interchangeably within the same design?
A: Yes, provided that physical dimensions accommodate the PCB layout. All substitute parts meet identical electrical specifications and can be used interchangeably from a functional standpoint.
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