SMUB204PET Surface Mount Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The SMUB204PET is a 200 kOhms, 0.25W surface mount trimmer potentiometer manufactured by Ohmite with gull wing termination and top adjustment capability. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing production support and design continuity. The part utilizes cermet resistive material and is housed in a compact rectangular package measuring 5.00mm x 4.50mm.

Substiute Parts

SMUB204PET

OhmiteIn Stock: 1133SMUB204PET Datasheet

Current PartRFQ

ST-4ETB204

Nidec Components CorporationIn Stock: 7671ST-4ETB204 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMUB204PET is determined by strict equivalence across the following critical parameters:

• Resistance value: 200 kOhms (exact match required)
• Power rating: 0.25W, 1/4W (exact match required)
• Tolerance: ±20% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Number of turns: 1 (exact match required)
• Adjustment type: Top Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Surface Mount (exact match required)
• Termination style: Gull Wing (exact match required)
• Package dimensions: 5.00mm x 4.50mm rectangular face (exact match required)

The ST-4ETB204 manufactured by Nidec Components Corporation meets all specified electrical and mechanical parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The ST-4ETB204 is the qualified substitute for the SMUB204PET. Both components demonstrate identical electrical specifications and mechanical compatibility. The ST-4ETB204 carries active product status with Nidec Components Corporation, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity classification, satisfying regulatory and environmental requirements. The primary distinction is packaging format: the SMUB204PET is supplied in cut tape, while the ST-4ETB204 is supplied in tape and reel format. This packaging difference does not affect functional performance or PCB assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can the ST-4ETB204 be used as a direct replacement for the SMUB204PET in existing designs?

A: Yes. The ST-4ETB204 matches all critical electrical and mechanical parameters of the SMUB204PET, including resistance, power rating, tolerance, temperature coefficient, adjustment type, resistive material, termination style, and package dimensions. No circuit redesign is required.

Q: What is the difference between cut tape and tape and reel packaging?

A: Cut tape packaging supplies individual component strips, while tape and reel packaging provides components wound on continuous reels. Both formats are compatible with standard PCB assembly equipment. The choice between formats depends on production volume and assembly line configuration.

Q: Are there compliance differences between the SMUB204PET and ST-4ETB204?

A: No. Both components are ROHS3 compliant with identical moisture sensitivity levels. The ST-4ETB204 carries additional REACH Unaffected status, indicating no additional regulatory burden.

Q: Why is the SMUB204PET listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The ST-4ETB204 remains in active production, providing a viable path for continued component sourcing.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both components feature identical rectangular package dimensions of 5.00mm x 4.50mm with matching gull wing termination, ensuring mechanical compatibility with existing PCB layouts.