RC3225F21R5CS Equivalent & Substitute Parts Reference

Part Overview

The RC3225F21R5CS is a 21.5 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1210 (3225 Metric) package format. This component is rated for 0.333W (1/3W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when alternative manufacturers offer components with matching electrical specifications (resistance value, tolerance, temperature coefficient) and compatible mechanical packaging, while maintaining compliance with applicable standards and certifications.

Substiute Parts

RC3225F21R5CS

Samsung Electro-MechanicsIn Stock: 873RC3225F21R5CS Datasheet

Current PartRFQ

CRCW121021R5FKEA

Vishay DaleIn Stock: 12870CRCW121021R5FKEA Datasheet

SimilarRFQ

ERJ-14NF21R5U

Panasonic Electronic ComponentsIn Stock: 9340ERJ-14NF21R5U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC3225F21R5CS is determined by the following criteria:

Mandatory Matching Parameters:

• Resistance value: 21.5 Ohms
• Tolerance: ±1%
• Package format: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C
• RoHS3 Compliance
• MSL 1 rating

Allowable Variation:

• Power rating may exceed the original 0.333W specification, as higher power-rated components in the same package are electrically and mechanically compatible for applications requiring the specified power level or less.

The identified substitute parts meet all mandatory parameters. Both CRCW121021R5FKEA (Vishay Dale) and ERJ-14NF21R5U (Panasonic Electronic Components) are rated at 0.5W (1/2W), providing increased power dissipation capability within the identical 1210 package footprint.

Parameter Comparison

Engineering Selection Recommendations

CRCW121021R5FKEA (Vishay Dale) is the primary substitute option. This component maintains Active product status, carries AEC-Q200 automotive qualification, and provides 0.5W power rating within the identical 1210 package. All electrical parameters, compliance certifications (RoHS3, REACH Unaffected), and environmental ratings align with the original specification.

ERJ-14NF21R5U (Panasonic Electronic Components) is a secondary substitute option. While electrically and mechanically equivalent with matching AEC-Q200 automotive qualification, this part carries "Not For New Designs" product status. Selection of this component is appropriate only for legacy system maintenance or replacement applications where design continuity is required.

Both substitute parts exceed the original power dissipation requirement (0.5W versus 0.333W), making them suitable for applications operating at or below the original power specification. The identical package dimensions and thermal characteristics ensure direct footprint compatibility on existing printed circuit boards.

Frequently Asked Questions (FAQ)

Q: Can CRCW121021R5FKEA or ERJ-14NF21R5U be used as direct replacements for RC3225F21R5CS?

A: Yes. Both substitute parts are electrically and mechanically compatible. They share identical resistance (21.5 Ohms), tolerance (±1%), package format (1210), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). The higher power rating (0.5W versus 0.333W) does not prevent substitution for applications requiring the original power level or less.

Q: What is the difference between the two substitute parts?

A: CRCW121021R5FKEA maintains Active product status and is recommended for new designs. ERJ-14NF21R5U carries "Not For New Designs" status and is suitable for legacy applications or replacement scenarios. Both are AEC-Q200 qualified and RoHS3 compliant.

Q: Are there package or footprint differences between these parts?

A: All three parts use the 1210 (3225 Metric) package. Physical dimensions are nearly identical: RC3225F21R5CS measures 3.20mm × 2.55mm with 0.66mm maximum seated height; CRCW121021R5FKEA measures 3.20mm × 2.50mm with 0.60mm maximum seated height; ERJ-14NF21R5U measures 3.20mm × 2.50mm with 0.70mm maximum seated height. These minor variations do not affect PCB layout compatibility.

Q: Do all parts meet the same compliance standards?

A: Yes. RC3225F21R5CS, CRCW121021R5FKEA, and ERJ-14NF21R5U are all RoHS3 compliant, REACH Unaffected, and rated MSL 1 (Unlimited). CRCW121021R5FKEA and ERJ-14NF21R5U carry additional AEC-Q200 automotive qualification.

Q: What is the significance of the higher power rating in the substitute parts?

A: The 0.5W rating in CRCW121021R5FKEA and ERJ-14NF21R5U provides increased thermal margin compared to the original 0.333W specification. This allows the substitute parts to operate safely in applications with higher power dissipation without exceeding component temperature limits. For applications matching the original 0.333W requirement, both substitutes operate well within their rated capacity.