RT0805FRE07121RL Equivalent & Substitute Parts

Part Overview

The RT0805FRE07121RL is a 121 Ohms ±1% thin film chip resistor in 0805 (2012 Metric) package format, rated at 0.125W (1/8W) power dissipation. This YAGEO component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently active in production with 926 pieces in stock inventory.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, or meet specific application requirements such as improved tolerance specifications or enhanced automotive qualification.

Substiute Parts

RT0805FRE07121RL

YAGEOIn Stock: 970RT0805FRE07121RL Datasheet

Current PartRFQ

RT0805BRD07121RL

YAGEOIn Stock: 10820RT0805BRD07121RL Datasheet

UpgradeRFQ

3-2176091-2

TE Connectivity Passive ProductIn Stock: 20543-2176091-2 Datasheet

DirectRFQ

ERA-6AEB1210V

Panasonic Electronic ComponentsIn Stock: 8891ERA-6AEB1210V Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT0805FRE07121RL is determined by the following critical parameters:

• Resistance Value: Must be 121 Ohms
• Package Format: Must be 0805 (2012 Metric)
• Composition: Must be Thin Film
• Operating Temperature Range: Must support -55°C ~ 155°C minimum
• Moisture Sensitivity Level: Must be MSL 1 or equivalent
• RoHS Compliance: Must maintain ROHS3 compliance

Tolerance, power rating, and temperature coefficient may vary within acceptable engineering margins. Parts with improved tolerance (±0.1% vs ±1%) or higher power ratings (0.25W vs 0.125W) are considered upgrades. Automotive-qualified variants meeting AEC-Q200 standards are functionally equivalent for general applications.

Parameter Comparison

Engineering Selection Recommendations

RT0805BRD07121RL (YAGEO): Direct upgrade from the main part with identical package, power rating, and operating temperature range. Improved tolerance specification (±0.1% vs ±1%) and lower temperature coefficient (±25ppm/°C vs ±50ppm/°C) provide enhanced precision. ROHS3 compliant with active production status. Suitable for applications requiring tighter tolerance control without package or thermal constraints.

3-2176091-2 (TE Connectivity): Functionally equivalent with identical resistance, tolerance, and temperature coefficient. Higher power rating (0.25W vs 0.125W) accommodates increased thermal dissipation requirements. Maintains 0805 package format and full operating temperature range. ROHS3 compliant. Appropriate for designs with elevated power dissipation margins or thermal stress conditions.

ERA-6AEB1210V (Panasonic): Automotive-qualified variant meeting AEC-Q200 standards with ±0.1% tolerance and ±25ppm/°C temperature coefficient. Identical power rating and package format to the main part. ROHS3 compliant. Designated for automotive applications or systems requiring automotive-grade component reliability.

Frequently Asked Questions (FAQ)

Q: Can RT0805BRD07121RL replace RT0805FRE07121RL in all applications?

A: Yes. Both parts share identical resistance, package, power rating, and operating temperature range. RT0805BRD07121RL offers improved tolerance (±0.1% vs ±1%) and lower temperature coefficient, making it a direct upgrade suitable for all applications where the original part is specified.

Q: What is the primary difference between 3-2176091-2 and the main part?

A: The TE Connectivity part (3-2176091-2) has double the power rating (0.25W vs 0.125W) while maintaining the same 0805 package footprint. This allows for higher current handling and thermal dissipation. Resistance, tolerance, and operating temperature range remain equivalent.

Q: Is ERA-6AEB1210V suitable for non-automotive applications?

A: Yes. ERA-6AEB1210V meets AEC-Q200 automotive qualification standards but is functionally equivalent to the main part for general-purpose applications. The automotive qualification represents an additional quality assurance level and does not restrict use in non-automotive designs.

Q: Do all substitute parts maintain the same physical footprint?

A: Yes. All listed substitutes use the 0805 (2012 Metric) package format with identical length (0.079" / 2.00mm) and width (0.049" / 1.25mm). Height variations are minimal (0.024" to 0.026" seated maximum), ensuring PCB layout compatibility.

Q: Are there tolerance or temperature coefficient considerations when substituting?

A: Substitute parts offer improved specifications: ±0.1% tolerance and ±25ppm/°C temperature coefficient compared to the main part's ±1% tolerance and ±50ppm/°C coefficient. These improvements enhance precision and thermal stability. Applications with strict tolerance requirements benefit from these upgrades; general-purpose applications are unaffected.

Q: What is the inventory status for each part?

A: RT0805FRE07121RL: 926 pieces; RT0805BRD07121RL: 10,743 pieces; 3-2176091-2: 2,028 pieces; ERA-6AEB1210V: 8,809 pieces. All parts are new original stock with active production status.