RC5025F3090CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F3090CS is a 309 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 2010 (5025 Metric) package format. This component is rated for 0.667W (2/3W) continuous power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and environmental ratings to support component procurement flexibility and supply chain continuity.

Substiute Parts

RC5025F3090CS

Samsung Electro-MechanicsIn Stock: 1162RC5025F3090CS Datasheet

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AC2010FK-07309RL

YAGEOIn Stock: 8621AC2010FK-07309RL Datasheet

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RMCF2010FT309R

Stackpole Electronics IncIn Stock: 4872RMCF2010FT309R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC5025F3090CS are qualified based on the following critical parameters:

Electrical Compatibility:

• Resistance value: 309 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)

Mechanical Compatibility:

• Package format: 2010 (5025 Metric) (exact match required)
• Physical dimensions: 0.197" L x 0.098" W (5.00mm x 2.50mm) (exact match required)
• Number of terminations: 2 (exact match required)

Environmental & Compliance:

• Composition: Thick Film (exact match required)
• RoHS Status: ROHS3 Compliant (minimum requirement)
• MSL Rating: 1 (Unlimited) (minimum requirement)
• Moisture resistance: Required

Power Rating Consideration: Substitute parts with equal or higher power ratings (0.667W or greater) are electrically compatible. Parts rated at 0.75W (3/4W) provide enhanced thermal margin while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: AC2010FK-07309RL (YAGEO)

The AC2010FK-07309RL qualifies as the primary substitute for the RC5025F3090CS. This part maintains identical electrical specifications (309 Ohms ±1%, ±100ppm/°C temperature coefficient) and mechanical compatibility (2010 package, 5.00mm x 2.50mm dimensions). The 0.75W power rating provides enhanced thermal performance compared to the 0.667W original specification while remaining within the same package envelope. ROHS3 compliance, MSL 1 rating, and moisture-resistant thick film construction ensure environmental compatibility. AEC-Q200 automotive qualification provides additional reliability assurance for demanding applications.

Secondary Substitute: RMCF2010FT309R (Stackpole Electronics Inc)

The RMCF2010FT309R serves as a secondary substitute option. Electrical parameters match exactly (309 Ohms ±1%, ±100ppm/°C). Mechanical compatibility is confirmed through identical package format and dimensions. The 0.75W power rating exceeds the original specification. ROHS3 compliance and MSL 1 rating satisfy environmental requirements. AEC-Q200 automotive qualification is present. Height-seated specification (0.028" / 0.70mm) is marginally higher than the original part (0.026" / 0.66mm) and should be verified for space-constrained PCB layouts. Moisture resistance is not explicitly specified for this part.

Selection Criteria:

• Use AC2010FK-07309RL when moisture resistance is a critical design requirement and automotive-grade reliability is specified
• Use RMCF2010FT309R when cost optimization is prioritized and PCB height clearance accommodates the 0.028" seated height
• Verify PCB layout compatibility for height-seated dimensions before final component selection
• All three parts are ROHS3 compliant and suitable for standard industrial and automotive applications

Frequently Asked Questions (FAQ)

Q: Can the AC2010FK-07309RL and RMCF2010FT309R be used interchangeably with the RC5025F3090CS?

A: Both substitute parts are electrically and mechanically compatible with the RC5025F3090CS. All three components share identical resistance (309 Ohms), tolerance (±1%), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and package format (2010 / 5025 Metric). The substitute parts feature higher power ratings (0.75W vs. 0.667W), which provides additional thermal margin. Physical dimensions are equivalent, with minor height variations that should be verified for space-constrained applications.

Q: What is the significance of the power rating difference between 0.667W and 0.75W?

A: The power rating indicates the maximum continuous power dissipation capability at specified ambient temperature conditions. The RC5025F3090CS is rated for 0.667W (2/3W), while both substitute parts are rated for 0.75W (3/4W). This difference represents approximately 12% additional thermal capacity. In applications where the RC5025F3090CS operates near its power limit, substituting with a 0.75W-rated part provides enhanced thermal performance and extended component life. The higher power rating does not affect electrical performance or circuit operation.

Q: Are there packaging format differences between these parts?

A: The RC5025F3090CS is supplied in bulk packaging, while AC2010FK-07309RL and RMCF2010FT309R are supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and offers advantages in handling efficiency and component protection. Bulk packaging may be preferred for manual assembly or small-volume applications. The component specifications and performance characteristics remain identical regardless of packaging format.

Q: What does AEC-Q200 automotive qualification mean?

A: AEC-Q200 is an automotive industry standard qualification that certifies passive components for use in automotive applications. Both substitute parts (AC2010FK-07309RL and RMCF2010FT309R) carry AEC-Q200 qualification, indicating they have undergone rigorous testing for reliability, temperature cycling, moisture resistance, and long-term stability under automotive operating conditions. The original RC5025F3090CS does not specify AEC-Q200 qualification. For automotive applications, the substitute parts provide additional assurance of component reliability.

Q: Is the height difference between 0.026" and 0.028" significant?

A: The height-seated specification represents the maximum component height when mounted on a PCB. The RC5025F3090CS specifies 0.026" (0.66mm), while RMCF2010FT309R specifies 0.028" (0.70mm), a difference of 0.002" (0.04mm). This difference is negligible for most applications but should be verified in space-constrained designs, such as those with limited clearance for conformal coating, potting compounds, or mechanical enclosures. AC2010FK-07309RL specifies 0.026" (0.65mm), matching the original part height.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and does not require special moisture-control storage conditions. This classification applies to components with robust moisture barriers and is typical for thick film chip resistors. No baking or desiccant storage is required before assembly. The component can be stored under standard industrial conditions without degradation of electrical or mechanical properties.

Q: Can these parts be used in high-reliability or military applications?

A: All three parts are ROHS3 compliant and carry MSL 1 ratings, indicating suitability for standard industrial applications. The substitute parts carry AEC-Q200 automotive qualification, which demonstrates compliance with automotive reliability standards. For military or high-reliability applications requiring MIL-SPEC qualification or additional screening, component datasheets and manufacturer certifications should be reviewed to confirm compliance with specific military standards.