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Bourns 3269W-1-504 Equivalent & Substitute Parts
Part Overview
The Bourns 3269W-1-504 is a 500 kOhms, 0.25W surface mount trimmer potentiometer with 12-turn top adjustment and cermet resistive material. This component is classified as Active product status. Equivalent parts are identified when identical electrical specifications, mechanical dimensions, and functional characteristics are maintained across manufacturers, enabling direct substitution in circuit designs where component availability or supply chain requirements necessitate alternative sourcing.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 500 kOhms |
| Power Rating | 0.25W (1/4W) |
| Tolerance | ±10% |
| Temperature Coefficient | ±100ppm/°C |
| Number of Turns | 12 |
| Adjustment Type | Top Adjustment |
| Resistive Material | Cermet |
| Mounting Type | Surface Mount |
| Size / Dimension | Rectangular - 0.250" x 0.170" Face (6.35mm x 4.32mm) |
| HTSUS Code | 8533.40.8050 |
Substitute Part Grouping Explanation
Substitute parts for the Bourns 3269W-1-504 are identified based on strict equivalence of the following parameters:
- Resistance value: 500 kOhms
- Power rating: 0.25W (1/4W)
- Tolerance: ±10%
- Temperature coefficient: ±100ppm/°C
- Number of turns: 12
- Adjustment type: Top Adjustment
- Resistive material: Cermet
- Mounting type: Surface Mount
- Physical dimensions: Rectangular - 0.250" x 0.170" Face (6.35mm x 4.32mm)
- HTSUS classification: 8533.40.8050
The TT Electronics / BI Technologies 84WR500KLF meets all specified electrical and mechanical parameters, establishing direct substitution eligibility.
Parameter Comparison
| Parameter | Bourns 3269W-1-504 | TT Electronics 84WR500KLF | Match Status |
|---|---|---|---|
| Resistance Value | 500 kOhms | 500 kOhms | Identical |
| Power Rating | 0.25W (1/4W) | 0.25W (1/4W) | Identical |
| Tolerance | ±10% | ±10% | Identical |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | Identical |
| Number of Turns | 12 | 12.0 | Identical |
| Adjustment Type | Top Adjustment | Top Adjustment | Identical |
| Resistive Material | Cermet | Cermet | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Termination Style | Gull Wing | Surface Mount | Functionally Equivalent |
| Size / Dimension | Rectangular - 0.250" x 0.170" Face (6.35mm x 4.32mm) | Rectangular - 0.250" x 0.170" Face (6.35mm x 4.32mm) | Identical |
| HTSUS Code | 8533.40.8050 | 8533.40.8050 | Identical |
Engineering Selection Recommendations
The TT Electronics / BI Technologies 84WR500KLF is a direct electrical and mechanical equivalent to the Bourns 3269W-1-504. Both components share identical resistance, power rating, tolerance, temperature coefficient, turn count, adjustment mechanism, resistive material, mounting type, and physical dimensions.
The 84WR500KLF offers improved compliance status: RoHS Compliant (versus RoHS non-compliant for the 3269W-1-504) and REACH Unaffected status (versus REACH Affected). The 84WR500KLF also provides superior moisture sensitivity classification (MSL 1 - Unlimited versus MSL 2 - 1 Year), indicating enhanced environmental stability.
Selection between these parts should be based on supply availability, compliance requirements for the end application, and environmental exposure conditions during storage and deployment.
Frequently Asked Questions (FAQ)
Q: Can the TT Electronics 84WR500KLF be used as a direct replacement for the Bourns 3269W-1-504?
A: Yes. Both components are electrically and mechanically equivalent, sharing identical resistance value, power rating, tolerance, temperature coefficient, number of turns, adjustment type, resistive material, mounting type, and physical dimensions. Both are classified as Active products.
Q: What is the difference between Gull Wing and Surface Mount termination styles?
A: Both termination styles are compatible with surface mount assembly processes. Gull Wing termination features leads that extend outward from the component body, while Surface Mount termination integrates leads directly into the mounting footprint. For the specified dimensions and mounting type, both styles accommodate standard PCB assembly equipment.
Q: Are there compliance differences between these parts?
A: Yes. The 84WR500KLF is RoHS Compliant and REACH Unaffected, while the 3269W-1-504 is RoHS non-compliant and REACH Affected. Applications subject to RoHS or REACH regulations should specify the 84WR500KLF.
Q: What does Moisture Sensitivity Level (MSL) indicate?
A: MSL rating specifies the maximum time a component can be stored in ambient conditions before soldering. The 84WR500KLF (MSL 1 - Unlimited) has no time restriction, while the 3269W-1-504 (MSL 2 - 1 Year) requires soldering within one year of opening the original packaging.
Q: Are the physical dimensions identical?
A: Yes. Both components have identical rectangular dimensions of 0.250" x 0.170" face (6.35mm x 4.32mm), ensuring identical PCB footprint compatibility.
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