RL3264R-R680-F Equivalent & Substitute Parts

Part Overview

The RL3264R-R680-F is a 680 mOhms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by Susumu. This thin film current sense resistor is designed for precision applications requiring low resistance values with tight tolerance specifications. The part is classified as obsolete, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility while offering active product status and continued availability.

Substiute Parts

RL3264R-R680-F

SusumuIn Stock: 937RL3264R-R680-F Datasheet

Current PartRFQ

ERJ-1TRQFR68U

Panasonic Electronic ComponentsIn Stock: 9538ERJ-1TRQFR68U Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RL3264R-R680-F is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Resistance value: 680 mOhms
• Tolerance: ±1%
• Power rating: 1W
• Current sense application capability

Mechanical Compatibility Requirements:

• Package type: 2512 (6432 Metric)
• Physical dimensions: 0.252" L x 0.126" W (6.40mm x 3.20mm)
• Number of terminations: 2

Regulatory & Environmental Compliance:

• RoHS3 compliance
• Moisture Sensitivity Level 1
• Operating temperature range support

The ERJ-1TRQFR68U from Panasonic Electronic Components satisfies all mandatory electrical and mechanical parameters. While composition differs (thick film versus thin film) and temperature coefficient specifications vary, both parts maintain the same resistance value, tolerance, power rating, package configuration, and regulatory compliance status required for direct substitution in current sense applications.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-1TRQFR68U serves as a direct electrical and mechanical substitute for the obsolete RL3264R-R680-F. Both components share identical resistance values, tolerance specifications, power ratings, and 2512 package configurations, enabling pin-compatible board-level replacement without circuit redesign.

The substitute part offers extended product lifecycle status (active versus obsolete), ensuring long-term availability and supply chain continuity. The ERJ-1TRQFR68U incorporates AEC-Q200 automotive qualification, providing additional reliability assurance beyond the base specifications.

Physical height differences are minimal (0.026" versus 0.028" maximum seated height), remaining within typical PCB assembly tolerances. Both components maintain ROHS3 compliance and unlimited moisture sensitivity classification, satisfying regulatory requirements for equivalent applications.

Temperature coefficient variation (0/+100ppm/°C versus ±200ppm/°C) and extended operating temperature range (-55°C to 155°C versus -55°C to 125°C) of the substitute part represent performance enhancements suitable for applications requiring broader thermal operating windows.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-1TRQFR68U replace the RL3264R-R680-F in existing designs without PCB modifications?

A: Yes. Both components share identical 2512 (6432 Metric) package configurations with matching pin counts and footprints. Physical dimensions are equivalent within assembly tolerances, enabling direct board-level substitution without layout changes.

Q: What is the significance of the composition difference between thin film and thick film?

A: Composition differences reflect manufacturing technology variations. Both thin film and thick film resistors in this specification class meet the stated electrical parameters (680 mOhms ±1% at 1W). The thick film construction of the substitute part provides automotive-grade reliability certification (AEC-Q200).

Q: Are there compliance or regulatory differences between these parts?

A: Both components are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited). The substitute part carries AEC-Q200 automotive qualification, representing an additional compliance credential not present in the original part specification.

Q: How do temperature coefficient specifications affect substitution suitability?

A: The main part specifies 0/+100ppm/°C while the substitute specifies ±200ppm/°C. Both values fall within acceptable ranges for current sense resistor applications. The substitute's extended operating temperature range (-55°C to 155°C) provides additional thermal margin compared to the original specification (-55°C to 125°C).

Q: What is the practical impact of the 0.002" height difference?

A: The height difference (0.026" versus 0.028" maximum) is negligible for standard PCB assembly processes. This variation remains within typical component placement tolerances and does not affect board-level compatibility or functionality.

Q: Is the ERJ-1TRQFR68U available in the same packaging format?

A: The substitute is supplied in Tape & Reel (TR) format, which is standard for automated assembly operations. This packaging format is compatible with standard pick-and-place equipment used in manufacturing environments.