SM-3TA504 Equivalent & Substitute Parts

Part Overview

The SM-3TA504 is a surface mount trimmer potentiometer manufactured by Nidec Components Corporation. It provides 500 kOhms resistance at 0.125W (1/8W) power rating with 11-turn side adjustment capability. The device uses cermet resistive material and J lead termination for reliable performance in precision adjustment applications. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent substitute parts may be required due to supply availability, lead time considerations, or inventory management across component sourcing channels.

Substiute Parts

SM-3TA504

Nidec Components CorporationIn Stock: 1139SM-3TA504 Datasheet

Current PartRFQ

3223J-1-504E

Bourns Inc.In Stock: 10343223J-1-504E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns 3223J-1-504E qualifies as a direct substitute for the SM-3TA504 based on the following critical parameters:

• Identical resistance value: 500 kOhms
• Identical power rating: 0.125W (1/8W)
• Identical tolerance: ±20%
• Identical temperature coefficient: ±100ppm/°C
• Identical number of turns: 11
• Identical adjustment type: Side Adjustment
• Identical resistive material: Cermet
• Identical mounting type: Surface Mount
• Identical termination style: J Lead
• Identical packaging format: Tape & Reel (TR)
• Equivalent RoHS3 compliance
• Equivalent MSL rating: 1 (Unlimited)

The 3223J-1-504E maintains functional and electrical equivalence across all specified parameters. Physical dimensions show minor variation (rectangular 0.154" x 0.125" versus square 0.154" x 0.154"), which remains within acceptable PCB layout tolerances for standard surface mount applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SM-3TA504 and 3223J-1-504E are active production components with full RoHS3 compliance and unlimited moisture sensitivity ratings, making either suitable for new designs and production environments. Selection between these parts should be based on:

• Supply chain availability and lead times
• Inventory levels at authorized distributors
• Cost considerations within procurement budgets
• PCB layout constraints related to the minor dimensional difference (rectangular versus square footprint)
• Existing design documentation and qualification history

The Bourns 3223J-1-504E carries REACH Affected status, whereas the SM-3TA504 is REACH Unaffected. Applications subject to REACH regulatory requirements should confirm compliance requirements with legal or procurement departments before final part selection.

Frequently Asked Questions (FAQ)

Q: Can the 3223J-1-504E directly replace the SM-3TA504 in existing designs?

A: Yes. Both parts share identical electrical specifications (500 kOhms, 0.125W, ±20% tolerance, ±100ppm/°C temperature coefficient, 11-turn adjustment) and identical mounting characteristics (surface mount, J lead termination, cermet material). The minor physical dimension difference (rectangular versus square footprint) requires PCB layout verification to confirm adequate clearance.

Q: What is the significance of the dimension difference between these parts?

A: The SM-3TA504 has a square footprint (0.154" x 0.154"), while the 3223J-1-504E has a rectangular footprint (0.154" x 0.125"). Both fit within standard surface mount assembly processes. PCB designs must accommodate the rectangular profile to avoid component placement conflicts or clearance violations.

Q: Are there compliance differences between these parts?

A: Both parts are RoHS3 compliant with MSL rating 1 (unlimited moisture sensitivity). The 3223J-1-504E is REACH Affected, while the SM-3TA504 is REACH Unaffected. Applications in regulated markets should confirm REACH compliance requirements with appropriate departments.

Q: Do these parts require different handling or storage procedures?

A: No. Both parts carry MSL rating 1, indicating unlimited shelf life without moisture sensitivity concerns. Standard surface mount component handling and storage procedures apply to both parts.

Q: Can these parts be used interchangeably in production?

A: Yes, provided PCB layouts accommodate the rectangular footprint of the 3223J-1-504E. Both parts are active production components supplied in Tape & Reel packaging suitable for automated assembly processes.