RP2012S-680-F Equivalent & Substitute Parts

Part Overview

The RP2012S-680-F is a 68 Ohms ±1% metal film chip resistor rated at 0.333W (1/3W) in 0805 (2012 Metric) surface mount package manufactured by Susumu. This part is classified as obsolete, necessitating identification of active equivalent components for ongoing production and procurement requirements. The substitute part maintains identical electrical specifications and mechanical compatibility while offering improved availability through active product status.

Substiute Parts

RP2012S-680-F

SusumuIn Stock: 860RP2012S-680-F Datasheet

Current PartRFQ

RL1220S-680-F

SusumuIn Stock: 9384RL1220S-680-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RP2012S-680-F with the RL1220S-680-F is based on the following matching electrical and mechanical parameters:

• Resistance Value: Both parts specify 68 Ohms
• Tolerance: Both maintain ±1% tolerance
• Power Rating: Both rated at 0.333W (1/3W)
• Package: Both use 0805 (2012 Metric) surface mount package
• Physical Dimensions: Identical length (0.079"), width (0.049"), and maximum seated height (0.020")
• Termination Count: Both feature 2 terminations
• Temperature Coefficient: Both specify 0 / +200ppm/°C
• Operating Temperature Range: Both operate across -55°C ~ 125°C
• Compliance: Both are ROHS3 compliant with MSL 1 rating

The primary distinction is composition type (metal film versus thin film) and product status (obsolete versus active). The RL1220S-680-F includes current sense functionality and is available in Tape & Reel packaging with significantly higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The RL1220S-680-F serves as a direct functional equivalent to the obsolete RP2012S-680-F for new designs and production transitions. Both components satisfy identical electrical requirements with matching resistance, tolerance, power rating, and temperature specifications. The RL1220S-680-F maintains full compliance with ROHS3 and REACH requirements, ensuring regulatory compatibility.

The transition from RP2012S-680-F to RL1220S-680-F is supported by:

• Identical mechanical footprint and PCB land pattern compatibility
• Matching electrical performance across the full operating temperature range
• Active product status with established supply chain availability
• Equivalent reliability and environmental ratings

The RL1220S-680-F is available in Tape & Reel packaging format, which is standard for automated assembly operations. The thin film composition of the RL1220S-680-F, combined with current sense functionality, provides enhanced performance characteristics for precision current measurement applications.

Frequently Asked Questions (FAQ)

Q: Can the RL1220S-680-F be used as a direct replacement for the RP2012S-680-F on existing PCBs?

A: Yes. Both components share identical 0805 (2012 Metric) package dimensions, footprint, and termination configuration. No PCB layout modifications are required.

Q: What is the difference between metal film and thin film composition in these resistors?

A: Both compositions meet the specified ±1% tolerance and temperature coefficient requirements. Thin film resistors, as used in the RL1220S-680-F, typically offer enhanced frequency response and lower noise characteristics. Metal film resistors, as used in the RP2012S-680-F, provide established performance in standard applications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and carry identical MSL 1 (Unlimited) moisture sensitivity ratings. Regulatory requirements are fully satisfied by either component.

Q: What does "current sense" functionality mean for the RL1220S-680-F?

A: Current sense designation indicates the RL1220S-680-F is optimized for precision current measurement applications. The thin film construction provides stable resistance characteristics suitable for accurate current monitoring circuits.

Q: Is the RL1220S-680-F available in packaging formats other than Tape & Reel?

A: The provided specifications indicate Tape & Reel (TR) packaging for the RL1220S-680-F. Contact the manufacturer for alternative packaging availability.

Q: What is the operating temperature range for both components?

A: Both the RP2012S-680-F and RL1220S-680-F operate across -55°C to 125°C with a temperature coefficient of 0 / +200ppm/°C.

Q: Why is the RP2012S-680-F classified as obsolete?

A: Obsolete status indicates the RP2012S-680-F is no longer in active production. The RL1220S-680-F represents the active equivalent for ongoing procurement and new design implementations.