TL88K25R0 Equivalent & Substitute Parts

Part Overview

The TL88K25R0 is a 25 Ohms ±10% 114W thick film chassis mount resistor manufactured by Ohmite, designed for high-power applications requiring robust thermal management and mechanical stability. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, maintenance, and new design implementations where this specification remains applicable.

Substiute Parts

TL88K25R0

OhmiteIn Stock: 1242TL88K25R0 Datasheet

Current PartRFQ

TL88K25R0E

OhmiteIn Stock: 993TL88K25R0E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL88K25R0 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical resistance value, tolerance, power rating, thermal characteristics, physical dimensions, and mounting interface to ensure direct compatibility without circuit redesign or mechanical rework.

The following parameters define substitution eligibility:

• Resistance: 25 Ohms (exact match required)
• Tolerance: ±10% (exact match required)
• Power Rating: 114W (exact match required)
• Temperature Coefficient: ±250ppm/°C (exact match required)
• Operating Temperature Range: -40°C to 125°C (exact match required)
• Composition: Thick Film (exact match required)
• Housing Type: Aluminum (exact match required)
• Mounting Feature: Flanges (exact match required)
• Physical Dimensions: 3.465" L x 1.012" W / 88.00mm x 25.70mm (exact match required)
• Lead Style: Quick Connects, 0.250" (6.35mm) (exact match required)

Parameter Comparison

Engineering Selection Recommendations

The TL88K25R0E is the direct equivalent substitute for the obsolete TL88K25R0. Both parts are manufactured by Ohmite and share identical electrical specifications and mechanical form factors, enabling direct replacement without circuit modification or mechanical redesign.

The primary distinction between the two parts is product status and regulatory compliance. The TL88K25R0E is currently in active production status, ensuring availability for procurement and supply chain continuity. Additionally, the TL88K25R0E meets ROHS3 compliance requirements, whereas the original TL88K25R0 is RoHS non-compliant. For applications subject to RoHS regulations or requiring components from active product lines, the TL88K25R0E is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the TL88K25R0E be used as a direct replacement for the TL88K25R0?

A: Yes. The TL88K25R0E is electrically and mechanically identical to the TL88K25R0. All critical parameters—resistance, tolerance, power rating, temperature characteristics, physical dimensions, and mounting interface—are equivalent, enabling direct substitution without circuit or mechanical modifications.

Q: What is the difference between TL88K25R0 and TL88K25R0E?

A: The primary differences are product status and regulatory compliance. The TL88K25R0 is obsolete and RoHS non-compliant, while the TL88K25R0E is in active production and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: The TL88K25R0 is available in standard packaging, while the TL88K25R0E is supplied in bulk packaging. Both are module-type packages with identical physical dimensions and mounting characteristics. Packaging format does not affect electrical or mechanical compatibility.

Q: Why should I select the TL88K25R0E over the TL88K25R0?

A: The TL88K25R0E is recommended for new designs and ongoing procurement due to its active production status and ROHS3 compliance. The TL88K25R0 is obsolete and may face supply constraints. For applications requiring RoHS-compliant components, the TL88K25R0E is the only viable option.

Q: Will the TL88K25R0E perform identically in my circuit?

A: Yes. The TL88K25R0E maintains identical electrical performance across all operating conditions within the specified temperature range of -40°C to 125°C. Thermal management, power dissipation, and frequency response characteristics are equivalent.