TC89P-1-104 Equivalent & Substitute Parts

Part Overview

The TC89P-1-104 is a 100 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Bourns Inc. as part of the Trimpot® TC89 Open Frame series. This component features cermet resistive material, PC pin termination, and top adjustment capability with a single turn of adjustment. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and component procurement.

Substiute Parts

TC89P-1-104

Bourns Inc.In Stock: 1181TC89P-1-104 Datasheet

Current PartRFQ

409HA104M

TE Connectivity Passive ProductIn Stock: 1135409HA104M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC89P-1-104 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Resistance value: 100 kOhms
• Power rating: 0.5W (1/2W)
• Tolerance: ±20%
• Temperature coefficient: ±250ppm/°C
• Number of turns: 1
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins
• Physical dimensions: Rectangular - 0.453" x 0.346" Face (11.50mm x 8.80mm)

The TE Connectivity Passive Product 409HA104M meets all critical electrical parameters and physical dimensions. The primary difference is the adjustment type (top and bottom adjustment versus top adjustment only), which represents an enhancement in functionality rather than a deviation from core specifications.

Parameter Comparison

Engineering Selection Recommendations

The 409HA104M from TE Connectivity Passive Product is a direct functional equivalent for the obsolete TC89P-1-104. Both components share identical electrical specifications, physical dimensions, and compliance certifications (ROHS3 Compliant, MSL 1). The 409HA104M maintains active product status, ensuring continued availability and supply chain reliability.

The adjustment type difference (top and bottom adjustment on the 409HA104M versus top adjustment only on the TC89P-1-104) does not compromise substitution compatibility. The additional bottom adjustment capability on the substitute part provides operational flexibility without altering core electrical performance or mechanical fit.

Both components are ROHS3 compliant and carry MSL 1 ratings, confirming equivalent environmental and handling requirements. The 409HA104M is suitable for direct replacement in applications requiring 100 kOhm, 0.5W through-hole trimmer potentiometers with cermet construction and PC pin termination.

Frequently Asked Questions (FAQ)

Q: Can the 409HA104M replace the TC89P-1-104 in existing designs?

A: Yes. The 409HA104M meets all critical electrical and mechanical specifications of the TC89P-1-104, including resistance value, power rating, tolerance, temperature coefficient, physical dimensions, and termination style. Both components are ROHS3 compliant with identical MSL ratings.

Q: What is the significance of the adjustment type difference?

A: The TC89P-1-104 features top adjustment only, while the 409HA104M provides both top and bottom adjustment. This difference does not affect electrical performance or mechanical compatibility. The additional adjustment access on the substitute part represents enhanced functionality.

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant and carry MSL 1 (Unlimited) ratings. Compliance certifications are equivalent, confirming suitable environmental and handling characteristics for both parts.

Q: What are the key parameters for substitution eligibility?

A: Substitution eligibility is determined by matching resistance (100 kOhms), power rating (0.5W), tolerance (±20%), temperature coefficient (±250ppm/°C), number of turns (1), resistive material (Cermet), mounting type (Through Hole), termination style (PC Pins), and physical dimensions (0.453" x 0.346" face).

Q: Is the 409HA104M currently available?

A: Yes. The 409HA104M maintains active product status, ensuring ongoing availability and supply chain support, unlike the obsolete TC89P-1-104.