ST5TP203 Equivalent & Substitute Parts

Part Overview

The ST5TP203 is a 20 kOhms, 0.25W surface mount trimmer potentiometer with Gull Wing termination, manufactured by Vishay Beyschlag/Draloric/BC Components. This component features Cermet resistive material, 14-turn side adjustment, and is designed for precision tuning applications in compact form factors.

The ST5TP203 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

ST5TP203

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 749ST5TP203 Datasheet

Current PartRFQ

ST-5ETP203

Nidec Components CorporationIn Stock: 1436ST-5ETP203 Datasheet

DirectRFQ

3269P-1-203G

Bourns Inc.In Stock: 7083269P-1-203G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ST5TP203 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Resistance value: 20 kOhms (exact match required)
• Power rating: 0.25W, 1/4W (exact match required)
• Tolerance: ±10% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Adjustment type: Side Adjustment (exact match required)
• Resistive material: Cermet (exact match required)
• Mounting type: Surface Mount (exact match required)
• Termination style: Gull Wing (exact match required)

The following parts meet these core electrical and mechanical criteria and are therefore qualified as substitutes:

1. ST-5ETP203 (Nidec Components Corporation) – Direct manufacturer equivalent with active product status
2. 3269P-1-203G (Bourns Inc.) – Manufacturer-recommended alternative with sealed design

Parameter Comparison

Engineering Selection Recommendations

ST-5ETP203 is the primary substitute option. This part maintains active product status, achieves RoHS3 compliance, and preserves all critical electrical parameters. The ST-5ETP203 is manufactured by Nidec Components Corporation and offers superior long-term availability compared to the obsolete ST5TP203. Mechanical dimensions differ slightly; PCB layout verification is required prior to implementation.

3269P-1-203G is a manufacturer-recommended alternative from Bourns Inc. This sealed Trimpot® 3269 series component maintains all core electrical specifications but differs in turn count (12 turns versus 14 turns) and mechanical dimensions. The 3269P-1-203G carries REACH Affected status and MSL-2 rating, requiring controlled storage conditions. This option is suitable for applications where the sealed design provides environmental protection benefits that offset the turn count difference.

Selection between ST-5ETP203 and 3269P-1-203G depends on PCB layout constraints, environmental requirements, and adjustment resolution needs. Both parts satisfy the core electrical and mechanical substitution criteria.

Frequently Asked Questions (FAQ)

Q: Can ST-5ETP203 be used as a direct drop-in replacement for ST5TP203?

A: ST-5ETP203 matches all critical electrical parameters and termination style. However, mechanical dimensions differ (0.266" x 0.236" versus 0.236" x 0.169" face size). PCB layout and mounting clearance must be verified before implementation.

Q: Why does 3269P-1-203G have 12 turns instead of 14?

A: The 3269P-1-203G is a sealed variant from the Bourns Trimpot® 3269 series. The 12-turn design is inherent to this product line. Applications requiring 14-turn resolution should prioritize ST-5ETP203.

Q: What is the difference between RoHS3 Compliant and RoHS non-compliant status?

A: RoHS3 Compliant (ST-5ETP203) meets current European Union Restriction of Hazardous Substances directives. RoHS non-compliant parts (ST5TP203, 3269P-1-203G) may contain restricted substances and are subject to regulatory limitations in certain markets.

Q: Does REACH Affected status affect component functionality?

A: REACH Affected status (3269P-1-203G) indicates the component contains substances of concern under EU REACH regulations. This does not affect electrical performance but may impact supply chain compliance requirements and documentation obligations.

Q: What does MSL-2 (1 Year) mean for 3269P-1-203G?

A: MSL-2 (1 Year) indicates the component requires controlled storage conditions and has a one-year shelf life from the date of manufacture. Moisture exposure during storage or handling can degrade performance. ST-5ETP203 with MSL-1 (Unlimited) has no shelf life restrictions.

Q: Are all three parts electrically interchangeable?

A: ST-5ETP203 and 3269P-1-203G are electrically interchangeable with ST5TP203 for the specified 20 kOhms, 0.25W, ±10% tolerance application. Mechanical fit and environmental protection requirements must be evaluated separately.