Equivalent & Substitute Parts for RT0805FRE0712K1L

Part Overview

The RT0805FRE0712K1L is a 12.1 kOhms ±1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.125W (1/8W). Manufactured by YAGEO, this component is actively produced and ROHS3 compliant. Alternative equivalent parts may be required due to inventory availability, tolerance requirements, power rating needs, or specific application certifications such as automotive AEC-Q200 qualification.

Key Parameters

Parameter	Value
Resistance	12.1 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

Resistance value: 12.1 kOhms (exact match required)
Package: 0805 (2012 Metric) (exact match required)
Composition: Thin Film (exact match required)
Operating temperature range: -55°C ~ 155°C minimum (exact match required)

Secondary Compatibility Parameters:

Tolerance: ±1% or tighter (±0.5%, ±0.1%) are acceptable upgrades
Power rating: 0.125W (1/8W) or higher (0.25W/1/4W acceptable)
Temperature coefficient: ±50ppm/°C or tighter (±25ppm/°C acceptable)
RoHS and MSL compliance: ROHS3 Compliant and MSL 1 required

Certification Enhancements:

Automotive AEC-Q200 qualification is an optional upgrade feature
Anti-sulfur properties are optional enhancements

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Temp Coeff (ppm/°C)	Package	Features	RoHS Status
RT0805FRE0712K1L	YAGEO	12.1 kOhms	±1%	0.125W	±50	0805	—	ROHS3
RT0805BRD0712K1L	YAGEO	12.1 kOhms	±0.1%	0.125W	±25	0805	—	ROHS3
RT0805DRD0712K1L	YAGEO	12.1 kOhms	±0.5%	0.125W	±25	0805	—	ROHS3
RT0805DRE0712K1L	YAGEO	12.1 kOhms	±0.5%	0.125W	±50	0805	—	ROHS3
1-2176093-2	TE Connectivity	12.1 kOhms	±0.1%	0.25W	±25	0805	—	ROHS3
ERA-6AEB1212V	Panasonic	12.1 kOhms	±0.1%	0.125W	±25	0805	Automotive AEC-Q200	ROHS3
RG2012P-1212-B-T5	Susumu	12.1 kOhms	±0.1%	0.125W	±25	0805	Anti-Sulfur, Automotive AEC-Q200	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Same Specifications): RT0805DRE0712K1L is a direct substitute with identical electrical specifications and tolerance performance to the main part.

Tolerance Upgrades: RT0805BRD0712K1L and RT0805DRD0712K1L provide tighter tolerance (±0.1% and ±0.5% respectively) with improved temperature coefficient stability (±25ppm/°C). These are suitable for applications requiring higher precision.

Power Rating Upgrade: 1-2176093-2 (TE Connectivity) provides double the power rating (0.25W vs 0.125W) while maintaining ±0.1% tolerance and ±25ppm/°C temperature coefficient. This option is applicable for circuits with higher thermal dissipation requirements.

Automotive-Qualified Alternatives: ERA-6AEB1212V (Panasonic) and RG2012P-1212-B-T5 (Susumi) both carry AEC-Q200 automotive qualification with ±0.1% tolerance and ±25ppm/°C temperature coefficient. RG2012P-1212-B-T5 includes anti-sulfur properties for enhanced environmental resistance. These are required for automotive applications.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can RT0805BRD0712K1L replace RT0805FRE0712K1L? A: Yes. RT0805BRD0712K1L is a direct functional substitute with improved tolerance (±0.1% vs ±1%) and better temperature coefficient (±25ppm/°C vs ±50ppm/°C). Both share identical resistance, power rating, package, and operating temperature range.

Q: What is the difference between RT0805DRD0712K1L and RT0805DRE0712K1L? A: Both have ±0.5% tolerance and 0.125W power rating in 0805 package. The primary difference is temperature coefficient: RT0805DRD0712K1L has ±25ppm/°C while RT0805DRE0712K1L has ±50ppm/°C. RT0805DRD0712K1L is preferred for temperature-sensitive applications.

Q: When should I use 1-2176093-2 instead of the standard RT0805FRE0712K1L? A: Use 1-2176093-2 when circuit design requires higher power dissipation capability. It provides 0.25W (1/4W) rating versus 0.125W (1/8W), with superior tolerance and temperature coefficient. Physical dimensions remain compatible with 0805 package footprints.

Q: Are ERA-6AEB1212V and RG2012P-1212-B-T5 interchangeable? A: Yes, both are AEC-Q200 automotive-qualified alternatives with identical electrical specifications (12.1 kOhms, ±0.1%, 0.125W, ±25ppm/°C). RG2012P-1212-B-T5 adds anti-sulfur protection for enhanced corrosion resistance in harsh environments.

Q: Can I use an automotive-qualified part in a non-automotive application? A: Yes. Automotive-qualified parts (ERA-6AEB1212V, RG2012P-1212-B-T5) exceed standard requirements and are fully compatible with non-automotive circuits. They provide additional reliability margin.

Q: Do all substitute parts fit the same PCB footprint? A: Yes. All listed substitutes use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm). Height variations are minimal (0.020" to 0.026" seated height) and do not affect PCB assembly compatibility.

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