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Bourns 3362R-1-102 Trimmer Potentiometer: Equivalent & Substitute Parts
Part Overview
The Bourns 3362R-1-102 is a 1 kOhm, 0.5W through-hole trimmer potentiometer with PC pin termination, top adjustment, and cermet resistive material. This sealed Trimpot® 3362 series component is designed for precision circuit tuning applications requiring compact rectangular form factor (6.99mm x 6.60mm). The part is currently active in production. Substitute parts are identified based on matching electrical specifications (resistance, power rating, tolerance, temperature coefficient, number of turns) and compatible mechanical characteristics (through-hole mounting, PC pin termination, top adjustment).
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 1 kOhms |
| 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 3362R-1-102 are qualified based on the following criteria:
Electrical Equivalence: All substitute parts maintain identical resistance (1 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), and number of turns (1).
Mechanical Compatibility: All substitutes feature through-hole mounting with PC pin termination and top adjustment, ensuring direct circuit board integration without redesign.
Resistive Material: All parts use cermet construction, maintaining performance characteristics in the specified operating range.
Packaging Consideration: Substitutes are available in tube or bulk packaging. Physical dimensions vary by series (rectangular, square, or round form factors), which may affect board layout but do not impact electrical function.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Power (W) | Tolerance | Temp Coeff (ppm/°C) | Turns | Adjustment | Material | Mount Type | Termination | Size/Dimension | Packaging | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3362R-1-102 | Bourns Inc. | 1 kOhms | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Rectangular 6.99mm x 6.60mm | Tube | Non-compliant |
| 3362R-1-102LF | Bourns Inc. | 1 kOhms | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Rectangular 6.99mm x 6.60mm | Tube | ROHS3 Compliant |
| 25PR1KLF | TT Electronics/BI | 1 kOhms | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Square 6.86mm x 6.86mm | Tube | RoHS Compliant |
| 72PR1KLF | TT Electronics/BI | 1 kOhms | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Square 9.53mm x 9.53mm | Bulk | ROHS3 Compliant |
| 72PMR1KLF | TT Electronics/BI | 1 kOhms | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Square 9.53mm x 9.53mm | Bulk | ROHS3 Compliant |
| 82PR1KLF | TT Electronics/BI | 1 kOhms | 0.5 | ±10% | ±100 | 1 | Top | Cermet | Through Hole | PC Pins | Round 6.35mm Dia | Bulk | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Replacement (Same Manufacturer): The 3362R-1-102LF is the direct equivalent from Bourns Inc., offering identical electrical and mechanical specifications with the addition of ROHS3 compliance. This part is preferred for new designs or RoHS-regulated applications.
Cross-Manufacturer Substitutes: The 25PR1KLF, 72PR1KLF, 72PMR1KLF, and 82PR1KLF from TT Electronics/BI are electrically equivalent alternatives. All are ROHS3 compliant or RoHS compliant. Selection among these depends on board layout constraints:
- 25PR1KLF: Compact square form factor (6.86mm x 6.86mm), closest in size to the original rectangular design
- 72PR1KLF and 72PMR1KLF: Larger square form factor (9.53mm x 9.53mm), suitable for applications with less space constraints
- 82PR1KLF: Circular form factor (6.35mm diameter), alternative for specific mounting requirements
Compliance Consideration: For applications subject to RoHS regulations, the 3362R-1-102LF or any TT Electronics/BI substitute ensures compliance. The original 3362R-1-102 is RoHS non-compliant and should be replaced in regulated designs.
Frequently Asked Questions (FAQ)
Q: Can the 3362R-1-102 be directly replaced with the 3362R-1-102LF?
A: Yes. Both parts are from Bourns Inc. with identical electrical specifications (1 kOhms, 0.5W, ±10% tolerance, ±100ppm/°C) and mechanical characteristics (through-hole PC pins, top adjustment, cermet material). The primary difference is RoHS compliance status. The 3362R-1-102LF is ROHS3 compliant, making it suitable for regulated applications.
Q: What are the physical dimension differences among substitutes?
A: The 3362R-1-102 has a rectangular face of 6.99mm x 6.60mm. The 25PR1KLF offers a similar compact footprint with a square 6.86mm x 6.86mm face. The 72PR1KLF and 72PMR1KLF have larger square faces (9.53mm x 9.53mm), and the 82PR1KLF is circular (6.35mm diameter). These dimensional variations may affect board layout but do not impact electrical performance.
Q: Are all substitutes electrically equivalent?
A: Yes. All listed substitutes maintain the same resistance (1 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (top), resistive material (cermet), mounting type (through-hole), and termination style (PC pins).
Q: What is the difference between tube and bulk packaging?
A: Tube packaging is used for the 3362R-1-102 and 25PR1KLF. Bulk packaging is used for the 72PR1KLF, 72PMR1KLF, and 82PR1KLF. Packaging affects order quantities and handling but does not influence component performance or compatibility.
Q: Which substitute should be selected for space-constrained applications?
A: The 25PR1KLF offers the most compact alternative with a square footprint (6.86mm x 6.86mm) comparable to the original rectangular design (6.99mm x 6.60mm). The 82PR1KLF circular form (6.35mm diameter) is also compact. The 72-series parts (9.53mm x 9.53mm) are larger and suitable only if board space permits.
Q: Are there any compliance or certification differences?
A: The original 3362R-1-102 is RoHS non-compliant. The 3362R-1-102LF is ROHS3 compliant. All TT Electronics/BI substitutes are either ROHS3 compliant or RoHS compliant. For applications requiring RoHS certification, select the 3362R-1-102LF or any TT Electronics/BI substitute. All parts are REACH affected or unaffected as specified and carry ECCN EAR99 classification.
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