Equivalent & Substitute Parts for RT1206BRE07121RL

Part Overview

The RT1206BRE07121RL is a 121 Ohms ±0.1% thin film chip resistor manufactured by YAGEO in 1206 (3216 Metric) package format. This component is rated for 0.25W (1/4W) power dissipation with an operating temperature range of -55°C to 155°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across the same package class.

Substiute Parts

RT1206BRE07121RL

YAGEOIn Stock: 1146RT1206BRE07121RL Datasheet

Current PartRFQ

ERA-8AEB1210V

Panasonic Electronic ComponentsIn Stock: 23636ERA-8AEB1210V Datasheet

UpgradeRFQ

RNCF1206BTC121R

Stackpole Electronics IncIn Stock: 1181RNCF1206BTC121R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT1206BRE07121RL is determined by the following criteria:

Primary Compatibility Requirements:

• Resistance value: 121 Ohms
• Tolerance: ±0.1%
• Package: 1206 (3216 Metric)
• Composition: Thin Film
• Operating temperature range: -55°C to 155°C minimum
• RoHS3 compliance
• MSL rating: 1 or equivalent

Secondary Considerations:

• Power rating: Equal to or greater than 0.25W
• Temperature coefficient: Within acceptable range for thin film resistors
• Physical dimensions: Compatible with 1206 footprint specifications

Two substitute parts meet these criteria with variations in power rating and automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

ERA-8AEB1210V (Panasonic Electronic Components) is suitable as a direct substitute where automotive-grade qualification is required. This part maintains identical electrical specifications with improved temperature coefficient performance (±25ppm/°C versus ±50ppm/°C). AEC-Q200 certification qualifies this component for automotive applications. Physical dimensions are within 1206 package tolerance with a maximum seated height of 0.70mm.

RNCF1206BTC121R (Stackpole Electronics Inc) provides increased power dissipation capability at 0.333W (1/3W) while maintaining all other electrical parameters. This part also carries AEC-Q200 automotive qualification. Physical dimensions are tightly controlled within 1206 specifications with a maximum seated height of 0.65mm, matching the original part.

RT1206BRE07121RL (YAGEO) remains the baseline reference. Selection of substitute parts should be based on application requirements for automotive compliance and thermal performance margins.

Frequently Asked Questions (FAQ)

Q: Can ERA-8AEB1210V replace RT1206BRE07121RL in all applications?

A: Yes, provided the application does not restrict component sourcing to non-automotive qualified parts. The ERA-8AEB1210V maintains identical resistance, tolerance, power rating, and operating temperature range. The improved temperature coefficient (±25ppm/°C) represents a performance enhancement.

Q: What is the difference between the power ratings of these parts?

A: RT1206BRE07121RL and ERA-8AEB1210V are both rated at 0.25W (1/4W). RNCF1206BTC121R is rated at 0.333W (1/3W), providing 33% additional power dissipation capability. All three parts operate within the same 1206 package envelope.

Q: Are there physical dimension differences that affect PCB layout?

A: Minor variations exist within 1206 package tolerance. RT1206BRE07121RL measures 3.10mm L x 1.60mm W with 0.65mm maximum seated height. ERA-8AEB1210V measures 3.20mm L x 1.60mm W with 0.70mm maximum seated height. RNCF1206BTC121R measures 3.05mm L x 1.55mm W with 0.65mm maximum seated height. All dimensions remain within standard 1206 footprint specifications.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive electronics qualification standard. ERA-8AEB1210V and RNCF1206BTC121R meet this qualification, making them suitable for automotive applications where component reliability and traceability are mandated.

Q: Can RNCF1206BTC121R be used where RT1206BRE07121RL is specified?

A: Yes. RNCF1206BTC121R maintains all critical electrical parameters and operates within the same temperature range. The higher power rating (0.333W versus 0.25W) provides additional thermal margin and does not create compatibility issues in standard circuit applications.

Q: Are all three parts RoHS3 compliant?

A: Yes. RT1206BRE07121RL, ERA-8AEB1210V, and RNCF1206BTC121R are all ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.