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3361P-1-503G Equivalent & Substitute Parts
Part Overview
The Bourns 3361P-1-503G is an active surface mount trimmer potentiometer rated at 50 kOhms, 0.5W with gull wing termination and top adjustment capability. This sealed Trimpot® 3361 series component uses cermet resistive material and is designed for applications requiring precision variable resistance in compact form factors. Substitute parts are identified to address packaging format availability and compliance requirements while maintaining identical electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 50 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 | Surface Mount |
| Termination Style | Gull Wing |
| Physical Dimensions | Rectangular - 0.277" x 0.264" Face (7.04mm x 6.70mm) |
| Moisture Sensitivity Level | 3 (168 Hours) |
| Series | Trimpot® 3361 - Sealed |
Substitute Part Grouping Explanation
The 3361P-1-503GLF is a direct functional equivalent of the 3361P-1-503G. Substitution is valid based on the following criteria:
- Identical resistance value: 50 kOhms
- Identical power rating: 0.5W (1/2W)
- Identical tolerance: ±10%
- Identical temperature coefficient: ±100ppm/°C
- Identical number of turns: 1
- Identical adjustment type: Top Adjustment
- Identical resistive material: Cermet
- Identical mounting type: Surface Mount
- Identical termination style: Gull Wing
- Identical physical dimensions: 0.277" x 0.264" Face (7.04mm x 6.70mm)
- Identical moisture sensitivity level: MSL 3 (168 Hours)
- Same base product number: 3361P
- Same series: Trimpot® 3361 - Sealed
The primary difference between these parts is packaging format: the main part uses Tape & Reel (TR) packaging, while the substitute uses Cut Tape (CT) & Digi-Reel® packaging. Both packaging formats are suitable for automated assembly processes with different supply chain and handling requirements.
Parameter Comparison
| Parameter | 3361P-1-503G | 3361P-1-503GLF |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Resistance | 50 kOhms | 50 kOhms |
| Power Rating | 0.5W (1/2W) | 0.5W (1/2W) |
| Tolerance | ±10% | ±10% |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C |
| Number of Turns | 1 | 1 |
| Adjustment Type | Top Adjustment | Top Adjustment |
| Resistive Material | Cermet | Cermet |
| Mounting Type | Surface Mount | Surface Mount |
| Termination Style | Gull Wing | Gull Wing |
| Physical Dimensions | 0.277" x 0.264" (7.04mm x 6.70mm) | 0.277" x 0.264" (7.04mm x 6.70mm) |
| MSL Rating | 3 (168 Hours) | 3 (168 Hours) |
| Series | Trimpot® 3361 - Sealed | Trimpot® 3361 - Sealed |
| Product Status | Active | Active |
| Packaging Format | Tape & Reel (TR) | Cut Tape (CT) & Digi-Reel® |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Both the 3361P-1-503G and 3361P-1-503GLF are active products suitable for component selection. The 3361P-1-503GLF offers ROHS3 compliance, which may be required for applications subject to RoHS regulations. The 3361P-1-503G is RoHS non-compliant and should be selected only when RoHS compliance is not a design requirement.
Selection between these parts should be based on:
- Packaging format requirements: Tape & Reel for high-volume automated assembly or Cut Tape & Digi-Reel® for smaller quantity orders or mixed component sourcing
- Regulatory compliance: ROHS3 compliance requirement for the 3361P-1-503GLF versus non-compliance for the 3361P-1-503G
- Supply chain and inventory availability
Both parts are electrically and mechanically identical and will function identically in circuit applications.
Frequently Asked Questions (FAQ)
Q: Can the 3361P-1-503GLF replace the 3361P-1-503G in my design?
A: Yes. The 3361P-1-503GLF is a direct substitute. All electrical parameters, mechanical dimensions, and functional characteristics are identical. The only differences are packaging format and RoHS compliance status.
Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?
A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, optimized for high-volume automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging provides components on tape segments or alternative reel formats, suitable for smaller quantities or mixed component sourcing scenarios.
Q: Does the RoHS compliance difference affect circuit performance?
A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both parts will perform identically in circuit applications.
Q: Are the physical dimensions identical between these parts?
A: Yes. Both parts have identical rectangular dimensions of 0.277" x 0.264" face (7.04mm x 6.70mm), ensuring identical PCB footprint and mounting compatibility.
Q: Can I use these parts interchangeably in automated assembly?
A: Yes, provided your assembly equipment can handle the respective packaging formats. Tape & Reel format is standard for most automated pick-and-place systems. Cut Tape & Digi-Reel® format may require different feeder configurations depending on your equipment.
Q: What is the moisture sensitivity level and how does it affect handling?
A: Both parts have MSL 3 rating (168 hours). This indicates standard moisture sensitivity requiring storage in dry conditions and standard moisture precautions during assembly. No special handling beyond industry-standard practices is required.
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