ST-5EP104 Equivalent & Substitute Parts

Part Overview

The ST-5EP104 is a 100 kOhms, 0.25W surface mount trimmer potentiometer manufactured by Nidec Components Corporation. This Cermet-based component features 14-turn side adjustment with gull wing termination, designed for precision applications requiring manual resistance tuning. The part maintains Active product status with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical specifications remain constant while mechanical or packaging configurations differ to accommodate specific assembly or sourcing requirements.

Substiute Parts

ST-5EP104

Nidec Components CorporationIn Stock: 1083ST-5EP104 Datasheet

Current PartRFQ

ST-5ETW104

Nidec Components CorporationIn Stock: 7268ST-5ETW104 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between ST-5EP104 and ST-5ETW104 is valid based on the following criteria:

Matching Electrical Parameters:

• Resistance value: 100 kOhms (identical)
• Power rating: 0.25W, 1/4W (identical)
• Tolerance: ±10% (identical)
• Temperature coefficient: ±100ppm/°C (identical)
• Number of turns: 14 (identical)
• Resistive material: Cermet (identical)

Allowed Variations:

• Adjustment type: Side Adjustment (ST-5EP104) vs. Top Adjustment (ST-5ETW104)
• Physical dimensions: 0.266" x 0.236" (6.75mm x 6.00mm) vs. 0.236" x 0.169" (6.00mm x 4.30mm)
• Packaging format: Bulk vs. Tape & Reel (TR)

These variations do not affect electrical performance or functional compatibility in applications where the adjustment mechanism and form factor are compatible with the PCB layout and assembly process.

Parameter Comparison

Engineering Selection Recommendations

Both ST-5EP104 and ST-5ETW104 maintain Active product status and identical regulatory compliance (REACH Unaffected, EAR99 classification). Selection between these parts depends on application-specific requirements:

ST-5EP104 (Side Adjustment): Select when PCB layout accommodates side-mounted adjustment access and bulk packaging aligns with procurement workflows. Larger face dimensions (6.75mm x 6.00mm) provide additional board space allocation.

ST-5ETW104 (Top Adjustment): Select when top-mounted adjustment access is required for user interface integration or space-constrained designs. Smaller face dimensions (6.00mm x 4.30mm) reduce footprint. Tape & Reel packaging supports automated assembly processes.

Both parts satisfy identical electrical performance criteria and environmental classifications. Substitution is valid when mechanical constraints and assembly methods are compatible with the selected adjustment mechanism and packaging format.

Frequently Asked Questions (FAQ)

Q: Can ST-5ETW104 replace ST-5EP104 in existing designs?

A: Substitution is valid only if the PCB layout accommodates top adjustment access instead of side adjustment, and the smaller face dimensions (6.00mm x 4.30mm vs. 6.75mm x 6.00mm) fit within the allocated footprint. Electrical performance is identical.

Q: What is the primary difference between these parts?

A: The adjustment mechanism differs (side vs. top), and physical dimensions vary accordingly. Electrical specifications, resistance value, power rating, tolerance, temperature coefficient, and number of turns are identical.

Q: Does packaging format affect electrical performance?

A: No. Bulk and Tape & Reel packaging formats do not affect component performance. Selection depends on assembly process requirements and procurement volume.

Q: Are both parts compliant with current regulations?

A: Yes. Both ST-5EP104 and ST-5ETW104 maintain REACH Unaffected status and EAR99 classification, with identical HTSUS coding (8533.40.8050).

Q: What does MSL 1 (Unlimited) mean for these components?

A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling.