RP2012T-R68-G Equivalent & Substitute Parts

Part Overview

The RP2012T-R68-G is a 680 mOhms ±2% metal film chip resistor rated at 0.333W (1/3W) in 0805 (2012 Metric) package format manufactured by Susumu. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure procurement availability for applications requiring this resistance value and power rating specification.

Substiute Parts

RP2012T-R68-G

SusumuIn Stock: 1037RP2012T-R68-G Datasheet

Current PartRFQ

RL1220S-R68-G

SusumuIn Stock: 1160RL1220S-R68-G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RP2012T-R68-G is determined by strict equivalence across the following parameters:

• Resistance Value: 680 mOhms exact match required
• Tolerance: ±2% exact match required
• Power Rating: 0.333W (1/3W) exact match required
• Package Format: 0805 (2012 Metric) exact match required
• Operating Temperature Range: -55°C ~ 125°C minimum requirement
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The RL1220S-R68-G qualifies as a direct substitute based on these parameters. While the substitute employs thin film composition with current sense features and improved temperature coefficient specification (0/+200ppm/°C versus 0/+350ppm/°C), it maintains full electrical and mechanical compatibility with the original specification.

Parameter Comparison

Engineering Selection Recommendations

The RL1220S-R68-G is a direct functional equivalent to the RP2012T-R68-G for applications requiring 680 mOhms ±2% resistance at 0.333W power rating in 0805 package format. Selection of the RL1220S-R68-G provides the following advantages:

• Active Product Status: The substitute maintains active manufacturing status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.
• Regulatory Compliance: Both components maintain identical ROHS3 compliance, REACH unaffected status, and EAR99 classification, satisfying regulatory requirements without modification.
• Improved Temperature Coefficient: The substitute exhibits superior temperature stability at 0/+200ppm/°C compared to 0/+350ppm/°C, providing enhanced performance in temperature-sensitive applications.
• Mechanical Compatibility: Identical package dimensions, termination count, and height specifications ensure direct board-level substitution without layout modification.
• Current Sense Capability: The thin film construction with current sense features provides additional functionality for precision measurement applications.

Frequently Asked Questions (FAQ)

Q: Can the RL1220S-R68-G be used as a direct replacement for the RP2012T-R68-G in existing designs?

A: Yes. The RL1220S-R68-G meets all electrical and mechanical specifications required for direct substitution. Identical resistance value, tolerance, power rating, package format, and operating temperature range ensure functional compatibility. Identical physical dimensions and termination configuration permit direct board-level replacement without design modification.

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

A: The main part uses metal film construction while the substitute uses thin film construction. Both compositions achieve the specified ±2% tolerance and 0.333W power rating. The thin film substitute provides improved temperature coefficient performance (0/+200ppm/°C versus 0/+350ppm/°C), making it suitable for applications requiring enhanced temperature stability.

Q: Are there any packaging differences between these parts?

A: The main part RP2012T-R68-G is supplied in standard packaging format. The substitute RL1220S-R68-G is supplied in Tape & Reel (TR) format. Both components use identical 0805 (2012 Metric) package specifications with matching physical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and height (0.020" maximum seated height).

Q: Why is the main part listed as obsolete?

A: The RP2012T-R68-G is classified as obsolete product status, indicating discontinued manufacturing. The RL1220S-R68-G maintains active product status with current manufacturing support, making it the recommended selection for new designs and ongoing procurement requirements.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the RP2012T-R68-G and RL1220S-R68-G are ROHS3 compliant, REACH unaffected, and classified under EAR99 export control. Both components maintain Moisture Sensitivity Level 1 (unlimited) rating. Regulatory compliance is identical between the main part and substitute.

Q: What is the current sense feature on the RL1220S-R68-G?

A: The RL1220S-R68-G incorporates current sense thin film technology, enabling precision measurement applications. This feature is inherent to the thin film construction and does not affect standard resistor operation in conventional applications. The component functions as a standard 680 mOhms resistor while providing enhanced measurement capability for current sensing circuits.