SMUB104PET Surface Mount Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The SMUB104PET is a 100 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 design support and procurement continuity. The part employs cermet resistive material construction with 1.0 turn adjustment range, suitable for precision tuning applications in compact form factors.

Substiute Parts

SMUB104PET

OhmiteIn Stock: 768SMUB104PET Datasheet

Current PartRFQ

ST-4ETB104

Nidec Components CorporationIn Stock: 9288ST-4ETB104 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMUB104PET is determined by strict equivalence across the following critical parameters:

• Resistance value: 100 kOhms
• Power rating: 0.25W (1/4W)
• Tolerance: ±20%
• 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 - 0.197" x 0.177" Face (5.00mm x 4.50mm)
• Environmental compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

The ST-4ETB104 manufactured by Nidec Components Corporation meets all specified parameters and qualifies as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The ST-4ETB104 is the qualified substitute for the SMUB104PET. Both components demonstrate identical electrical and mechanical specifications across all critical parameters. The ST-4ETB104 maintains active product status with current manufacturing availability (9213 pcs in stock), whereas the SMUB104PET is obsolete. Both parts satisfy ROHS3 compliance requirements and carry equivalent environmental certifications. The ST-4ETB104 is supplied in Tape & Reel packaging, standard for surface mount production environments.

Frequently Asked Questions (FAQ)

Q: Can the ST-4ETB104 be used as a direct replacement for the SMUB104PET in existing designs?

A: Yes. The ST-4ETB104 matches all electrical parameters (100 kOhms, 0.25W, ±20% tolerance, ±100ppm/°C temperature coefficient), mechanical specifications (gull wing termination, top adjustment, 1.0 turn), and physical dimensions (5.00mm x 4.50mm rectangular face). Both components are ROHS3 compliant with MSL 1 rating.

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

A: The SMUB104PET packaging specification is not provided in the reference data. The ST-4ETB104 is supplied in Tape & Reel (TR) format, standard for automated surface mount assembly.

Q: Are there any compliance differences between the two parts?

A: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. The ST-4ETB104 includes REACH Unaffected status. Both share identical ECCN (EAR99) and HTSUS (8533.40.8050) classifications.

Q: Why is the SMUB104PET listed as obsolete?

A: Product status reflects manufacturer discontinuation. The ST-4ETB104 remains in active production with current inventory availability.

Q: Are there any performance differences in temperature coefficient or tolerance?

A: No. Both components specify ±100ppm/°C temperature coefficient and ±20% tolerance. Performance characteristics are equivalent across the specified operating range.