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Equivalent & Substitute Parts for 3329P-1-102
Part Overview
The Bourns 3329P-1-102 is a 1 kOhm, 0.5W through-hole trimmer potentiometer with cermet resistive material, top adjustment, and PC pin termination. This sealed Trimpot® 3329 series component is classified as Active product status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility parameters are maintained across the same functional category.
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 3329P-1-102 are classified based on electrical parameter equivalence and mechanical compatibility. The following criteria determine substitutability:
Electrical Parameters (Must Match):
- Resistance value: 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
Mechanical Parameters (Must Match):
- Mounting type: Through Hole
- Termination style: PC Pins
Acceptable Variations:
- Physical size/dimension (Round vs. Square form factor)
- Packaging format (Tube vs. Bulk)
- RoHS compliance status
- REACH compliance status
Parameter Comparison
| Parameter | 3329P-1-102 | 3329P-1-102LF | 25PR1KLF | 82PR1KLF |
|---|---|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. | TT Electronics/BI | TT Electronics/BI |
| Resistance | 1 kOhms | 1 kOhms | 1 kOhms | 1 kOhms |
| Power Rating | 0.5W | 0.5W | 0.5W | 0.5W |
| Tolerance | ±10% | ±10% | ±10% | ±10% |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C |
| Number of Turns | 1 | 1 | 1 | 1 |
| Adjustment Type | Top Adjustment | Top Adjustment | Top Adjustment | Top Adjustment |
| Resistive Material | Cermet | Cermet | Cermet | Cermet |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Termination Style | PC Pins | PC Pins | PC Pins | PC Pins |
| Size/Dimension | Round - 0.250" Dia (6.35mm) | Round - 0.250" Dia (6.35mm) | Square - 0.270" x 0.270" Face (6.86mm x 6.86mm) | Round - 0.250" Dia (6.35mm) |
| Packaging | Tube | Tube | Tube | Bulk |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | RoHS Compliant | ROHS3 Compliant |
| REACH Status | REACH Affected | REACH Affected | REACH Unaffected | REACH Unaffected |
| Inventory | 911 Pcs | 1041 Pcs | 12299 Pcs | 2806 Pcs |
Engineering Selection Recommendations
3329P-1-102LF (Bourns Inc.): Direct manufacturer equivalent with identical electrical and mechanical specifications. RoHS3 compliant status provides regulatory advantage over the original 3329P-1-102. Maintains same round form factor and tube packaging. Suitable for applications requiring RoHS compliance.
25PR1KLF (TT Electronics/BI): Functionally equivalent with all electrical parameters matching. Square form factor (0.270" x 0.270") differs from round configuration. RoHS compliant and REACH unaffected status. Higher inventory availability. Suitable for applications where form factor variation is acceptable and REACH compliance is required.
82PR1KLF (TT Electronics/BI): Functionally equivalent with all electrical parameters matching. Maintains round form factor identical to original. RoHS3 compliant and REACH unaffected status. Bulk packaging format. Suitable for high-volume applications and where REACH compliance is required.
Frequently Asked Questions (FAQ)
Q: Can 3329P-1-102LF replace 3329P-1-102 directly? A: Yes. Both parts share identical electrical specifications (1 kOhm, 0.5W, ±10% tolerance, ±100ppm/°C), mechanical configuration (round form factor, through-hole, PC pins), and series designation. The primary difference is RoHS3 compliance status of the LF variant.
Q: What is the difference between round and square form factors? A: The 25PR1KLF uses a square footprint (0.270" x 0.270") compared to the round 0.250" diameter of 3329P-1-102 and 82PR1KLF. Physical board layout space requirements may differ. All other electrical and functional parameters remain equivalent.
Q: Are there packaging differences among substitutes? A: Yes. 3329P-1-102 and 3329P-1-102LF are supplied in Tube packaging. 25PR1KLF is supplied in Tube packaging. 82PR1KLF is supplied in Bulk packaging. Packaging format does not affect component functionality.
Q: Which substitute has the best regulatory compliance? A: 25PR1KLF and 82PR1KLF both offer RoHS compliance and REACH unaffected status. 3329P-1-102LF is RoHS3 compliant but REACH affected. Selection depends on specific regulatory requirements for your application.
Q: Can I use these parts interchangeably in my circuit? A: All four parts maintain equivalent electrical performance (1 kOhm resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1-turn top adjustment, cermet material). Physical form factor differences (round vs. square) require PCB layout verification. Consult your circuit design specifications for mechanical clearance requirements.
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