RC1005F1821CS Equivalent & Substitute Parts

Part Overview

The RC1005F1821CS is a 1.82 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0402 (1005 Metric) package format. This surface mount device is rated for 0.063W (1/16W) power dissipation and features moisture-resistant construction with unlimited moisture sensitivity level (MSL 1). The part is currently active in production and widely available in tape and reel packaging. Equivalent and substitute parts are necessary to address supply chain flexibility, alternative sourcing options, and specific application requirements such as automotive qualification or enhanced power ratings.

Substiute Parts

RC1005F1821CS

Samsung Electro-MechanicsIn Stock: 763RC1005F1821CS Datasheet

Current PartRFQ

CR0402-FX-1821GLF

Bourns Inc.In Stock: 36746CR0402-FX-1821GLF Datasheet

DirectRFQ

MCR01MRTF1821

Rohm SemiconductorIn Stock: 1321MCR01MRTF1821 Datasheet

DirectRFQ

RC0402FR-071K82L

YAGEOIn Stock: 70961RC0402FR-071K82L Datasheet

DirectRFQ

ERJ-2RKF1821X

Panasonic Electronic ComponentsIn Stock: 7115ERJ-2RKF1821X Datasheet

UpgradeRFQ

AC0402FR-071K82L

YAGEOIn Stock: 20598AC0402FR-071K82L Datasheet

SimilarRFQ

CRCW04021K82FKED

Vishay DaleIn Stock: 114849CRCW04021K82FKED Datasheet

SimilarRFQ

RMCF0402FT1K82

Stackpole Electronics IncIn Stock: 292406RMCF0402FT1K82 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F1821CS is determined by strict equivalence across the following critical parameters:

Core Electrical Parameters:

• Resistance value: 1.82 kOhms
• Tolerance: ±1%
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Physical Parameters:

• Package type: 0402 (1005 Metric)
• Form factor: Surface mount chip resistor
• Termination count: 2 terminations
• Composition: Thick film

Environmental & Compliance Parameters:

• RoHS3 compliance
• MSL rating: 1 (Unlimited)
• REACH unaffected status

Substitute parts are categorized into three groups: Direct Equivalents maintain identical specifications including power rating and packaging format; Upgrade Options provide enhanced power ratings or automotive qualification while maintaining all other core parameters; and Similar Alternatives include automotive-qualified variants with minor physical dimension variations that do not affect PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents for Standard Applications:

CR0402-FX-1821GLF (Bourns Inc.) and RC0402FR-071K82L (YAGEO) are direct functional equivalents to the RC1005F1821CS. Both maintain identical electrical specifications, package format, and power rating. RC0402FR-071K82L includes moisture-resistant construction matching the original part. Both manufacturers maintain active product status with established supply availability.

For Discontinued Part Replacement:

MCR01MRTF1821 (Rohm Semiconductor) is electrically equivalent but carries discontinued status at DiGi Electronics. This part should be selected only when existing inventory is available and long-term supply is not required.

For Automotive Applications:

AC0402FR-071K82L (YAGEO), CRCW04021K82FKED (Vishay Dale), and RMCF0402FT1K82 (Stackpole Electronics Inc) are all AEC-Q200 automotive-qualified alternatives. These parts maintain identical electrical and physical specifications while adding automotive-grade reliability certification. All three are currently active in production with substantial inventory availability.

For Enhanced Power Dissipation:

ERJ-2RKF1821X (Panasonic Electronic Components) provides an upgrade path with 0.1W (1/10W) power rating compared to the standard 0.063W rating. This part includes AEC-Q200 automotive qualification and is suitable for applications requiring higher thermal headroom while maintaining all other electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-1821GLF be used as a direct replacement for RC1005F1821CS?

A: Yes. CR0402-FX-1821GLF is a direct equivalent with identical resistance (1.82 kΩ), tolerance (±1%), power rating (0.063W), package format (0402), and operating temperature range (-55°C ~ 155°C). Both parts are RoHS3 compliant with MSL 1 rating.

Q: What is the difference between RC0402FR-071K82L and RC1005F1821CS?

A: Both parts are electrically and mechanically identical with 1.82 kΩ resistance, ±1% tolerance, 0.063W power rating, and 0402 package. The primary difference is packaging format: RC1005F1821CS uses Tape & Reel while RC0402FR-071K82L uses Cut Tape & Digi-Reel. Both include moisture-resistant construction.

Q: Why would I select ERJ-2RKF1821X over the standard RC1005F1821CS?

A: ERJ-2RKF1821X provides a higher power rating (0.1W versus 0.063W) and includes AEC-Q200 automotive qualification. Select this upgrade when applications require enhanced thermal performance or automotive-grade reliability certification while maintaining the same 1.82 kΩ resistance value.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance profile of the RC1005F1821CS.

Q: What is the significance of AEC-Q200 qualification on automotive variants?

A: AEC-Q200 certification indicates the part meets automotive industry reliability and quality standards. Parts such as AC0402FR-071K82L, CRCW04021K82FKED, and RMCF0402FT1K82 carry this qualification, making them suitable for automotive applications where this certification is required by design specifications.

Q: Can MCR01MRTF1821 be used for new designs?

A: MCR01MRTF1821 is electrically equivalent but carries discontinued status at DiGi Electronics. This part is suitable only for replacement applications where existing inventory is available. For new designs, select from active-status alternatives such as CR0402-FX-1821GLF, RC0402FR-071K82L, or automotive-qualified variants.

Q: Do all substitute parts fit the same PCB footprint?

A: Yes. All substitute parts use the 0402 (1005 Metric) package format with identical dimensions (0.039" L x 0.020" W / 1.00mm x 0.50mm) and two terminations. Physical height variations (0.015" to 0.016" seated height) are within standard PCB assembly tolerances and do not affect placement compatibility.

Q: What is the temperature coefficient specification and why does it matter?

A: All listed parts maintain ±100ppm/°C temperature coefficient across the -55°C ~ 155°C operating range. This specification defines resistance drift with temperature changes and is critical for precision analog circuits. All substitutes match this specification exactly.