TC89P-1-502 Equivalent & Substitute Parts

Part Overview

The TC89P-1-502 is a 5 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 design. The part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

TC89P-1-502

Bourns Inc.In Stock: 1146TC89P-1-502 Datasheet

Current PartRFQ

409HA502M

TE Connectivity Passive ProductIn Stock: 761409HA502M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC89P-1-502 must satisfy the following core electrical and mechanical parameters:

• Resistance value: 5 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 409HA502M meets all mandatory electrical specifications and physical dimensions. A secondary difference exists in adjustment type: the TC89P-1-502 provides top adjustment only, while the 409HA502M provides both top and bottom adjustment. This difference does not prevent functional substitution in applications where the additional adjustment capability is either unused or beneficial.

Parameter Comparison

Engineering Selection Recommendations

The TC89P-1-502 is classified as obsolete. The 409HA502M from TE Connectivity Passive Product is an active product that satisfies all core electrical and mechanical substitution criteria. Selection of the 409HA502M is appropriate for applications requiring a functionally equivalent replacement where the original part is no longer available.

The 409HA502M provides identical electrical performance across resistance, power rating, tolerance, and temperature coefficient specifications. Physical dimensions and through-hole PC pin termination are identical, ensuring direct mechanical compatibility in existing PCB layouts. The addition of bottom adjustment capability in the 409HA502M does not degrade performance in applications utilizing only top adjustment.

Frequently Asked Questions (FAQ)

Q: Can the 409HA502M directly replace the TC89P-1-502 in existing designs?

A: Yes. The 409HA502M matches all core electrical parameters (5 kOhms, 0.5W, ±20% tolerance, ±250ppm/°C temperature coefficient) and physical dimensions (11.50mm x 8.80mm rectangular face). PC pin termination and through-hole mounting are identical. No PCB layout modifications are required.

Q: What is the difference in adjustment type between these parts?

A: The TC89P-1-502 provides top adjustment only. The 409HA502M provides both top and bottom adjustment. This difference does not prevent substitution; the additional bottom adjustment capability is simply unused if the original design utilized only top adjustment.

Q: Are there compliance or certification differences?

A: The TC89P-1-502 is ROHS3 compliant and REACH unaffected. The 409HA502M RoHS status is listed as not applicable. Both parts carry identical moisture sensitivity level (MSL 1 - Unlimited) and ECCN/HTSUS classifications. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: Why is the TC89P-1-502 obsolete?

A: Product obsolescence is determined by the manufacturer. The Bourns Trimpot® TC89 series has been superseded by newer designs. Active alternatives such as the TE Connectivity 409HA502M remain available for new designs and legacy system support.

Q: Are there inventory considerations?

A: The TC89P-1-502 has 1109 pieces in stock as new original inventory. The 409HA502M has 724 pieces in stock. Availability may vary by distributor and time of inquiry.