RP2012T-1R0-F Equivalent & Substitute Parts

Part Overview

The RP2012T-1R0-F is a 1 Ohm ±1% metal film chip resistor rated at 0.333W (1/3W) in 0805 (2012 Metric) surface mount package manufactured by Susumu. This part carries an Obsolete product status. Identification of equivalent and substitute components is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

RP2012T-1R0-F

SusumuIn Stock: 938RP2012T-1R0-F Datasheet

Current PartRFQ

RL1220S-1R0-F

SusumuIn Stock: 190225RL1220S-1R0-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RP2012T-1R0-F is determined by the following critical parameters:

• Resistance Value: 1 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 0.333W / 1/3W (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)
• Moisture Sensitivity Level: 1 (Unlimited) (handling requirement)

The RL1220S-1R0-F qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. While the composition differs (Thin Film versus Metal Film) and the temperature coefficient varies (0/+200ppm/°C versus 0/+350ppm/°C), these differences remain within acceptable substitution criteria for the specified resistance, tolerance, power rating, and package configuration.

Parameter Comparison

Engineering Selection Recommendations

The RL1220S-1R0-F serves as a direct functional substitute for the RP2012T-1R0-F. Both components meet identical electrical specifications (1 Ohm, ±1%, 0.333W) and are housed in the same 0805 (2012 Metric) package with identical physical dimensions and termination configuration.

The RL1220S-1R0-F carries Active product status, ensuring continued availability and supply chain support. Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for current manufacturing and distribution.

The RL1220S-1R0-F is designated as a Current Sense Thin Film resistor, whereas the RP2012T-1R0-F is a Metal Film composition. The RL1220S-1R0-F exhibits a lower temperature coefficient (0/+200ppm/°C compared to 0/+350ppm/°C), which represents improved temperature stability characteristics within the shared -55°C ~ 125°C operating range.

Frequently Asked Questions (FAQ)

Q: Can the RL1220S-1R0-F directly replace the RP2012T-1R0-F in existing designs?

A: Yes. Both components share identical resistance (1 Ohm), tolerance (±1%), power rating (0.333W), package configuration (0805 / 2012 Metric), and physical dimensions. Electrical and mechanical compatibility is confirmed.

Q: What is the significance of the composition difference between Metal Film and Thin Film?

A: Composition differences reflect manufacturing process variations. Both compositions meet the specified electrical parameters (resistance, tolerance, power rating) and operating temperature range. The Thin Film composition of the RL1220S-1R0-F provides a lower temperature coefficient, indicating improved stability across the operating temperature range.

Q: Why is the RL1220S-1R0-F recommended over the obsolete RP2012T-1R0-F?

A: The RL1220S-1R0-F maintains Active product status, ensuring ongoing availability and supply chain support. The RP2012T-1R0-F is classified as Obsolete, limiting future procurement options.

Q: Are there packaging differences between these parts?

A: The RP2012T-1R0-F is supplied in standard packaging, while the RL1220S-1R0-F is supplied in Tape & Reel (TR) format. Both use identical 0805 (2012 Metric) surface mount packages with matching physical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and maximum seated height (0.020" / 0.50mm).

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the RP2012T-1R0-F and RL1220S-1R0-F are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for manufacturing and distribution.

Q: What is the Moisture Sensitivity Level for these components?

A: Both components carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.