SMUB203PET Surface Mount Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The SMUB203PET is a 20 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 active equivalent parts essential for ongoing production and maintenance applications. The part utilizes cermet resistive material and is housed in a compact rectangular package measuring 5.00mm x 4.50mm.

Substiute Parts

SMUB203PET

OhmiteIn Stock: 828SMUB203PET Datasheet

Current PartRFQ

ST-4ETB203

Nidec Components CorporationIn Stock: 20088ST-4ETB203 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMUB203PET is determined by strict equivalence across the following critical parameters:

• Resistance value: 20 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-4ETB203 manufactured by Nidec Components Corporation meets all specified electrical and mechanical parameters and is classified as an active product, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The ST-4ETB203 is the designated manufacturer-recommended substitute for the SMUB203PET. Both components are ROHS3 compliant and carry identical electrical specifications and mechanical dimensions. The primary distinction is product status: the SMUB203PET is obsolete while the ST-4ETB203 remains in active production with confirmed inventory availability (20,005 pcs). For new designs and ongoing production requiring this trimmer potentiometer specification, the ST-4ETB203 is the appropriate selection. Both components carry REACH Unaffected status and share the same ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the ST-4ETB203 be used as a direct replacement for the SMUB203PET in existing assemblies?

A: Yes. The ST-4ETB203 matches all electrical parameters (20 kOhms, 0.25W, ±20% tolerance, ±100ppm/°C temperature coefficient), mechanical specifications (5.00mm x 4.50mm rectangular package, gull wing termination, top adjustment), and resistive material (cermet). Pin-for-pin compatibility is maintained.

Q: What is the difference in packaging between these two parts?

A: The SMUB203PET packaging specification is not detailed in the available data. The ST-4ETB203 is supplied in Tape & Reel (TR) format. Confirm packaging requirements for your application before procurement.

Q: Are there compliance differences between the SMUB203PET and ST-4ETB203?

A: Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The ST-4ETB203 carries confirmed REACH Unaffected status. Both share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications.

Q: Why is the SMUB203PET listed as obsolete?

A: Obsolescence status indicates the SMUB203PET is no longer manufactured by Ohmite. The ST-4ETB203 provides functional and mechanical equivalence for applications requiring this trimmer potentiometer specification.

Q: Are there inventory considerations for component selection?

A: The SMUB203PET has 724 pcs available as new original stock. The ST-4ETB203 has 20,005 pcs available, providing greater supply security for ongoing production requirements.