RNCF0805DTC2K21 Equivalent & Substitute Parts

Part Overview

The RNCF0805DTC2K21 is a 2.21 kOhms ±0.5% thin film chip resistor in 0805 (2012 Metric) package rated for 0.25W (1/4W) power dissipation. Manufactured by Stackpole Electronics Inc, this component is AEC-Q200 automotive qualified and operates across -55°C to 155°C. The part is active in production with 779 units in current inventory.

Substitute parts are identified when design requirements allow relaxation of tolerance, power rating, or temperature coefficient specifications while maintaining the same resistance value, package format, and core electrical functionality.

Substiute Parts

RNCF0805DTC2K21

Stackpole Electronics IncIn Stock: 865RNCF0805DTC2K21 Datasheet

Current PartRFQ

RP73PF2A2K21BTDF

TE Connectivity Passive ProductIn Stock: 2550RP73PF2A2K21BTDF Datasheet

DirectRFQ

ERA-6AEB2211V

Panasonic Electronic ComponentsIn Stock: 23536ERA-6AEB2211V Datasheet

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RG2012P-2211-B-T5

SusumuIn Stock: 15007RG2012P-2211-B-T5 Datasheet

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RR1220P-2211-D-M

SusumuIn Stock: 11344RR1220P-2211-D-M Datasheet

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RT0805BRD072K21L

YAGEOIn Stock: 11491RT0805BRD072K21L Datasheet

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RT0805BRE072K21L

YAGEOIn Stock: 10831RT0805BRE072K21L Datasheet

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RT0805DRD072K21L

YAGEOIn Stock: 6233RT0805DRD072K21L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Compatibility Parameters:

• Resistance value: 2.21 kOhms (exact match required)
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Termination count: 2 terminations
• Physical dimensions: 0.079" L × 0.049" W (2.00mm × 1.25mm)
• RoHS compliance: ROHS3 Compliant
• MSL rating: MSL 1 (Unlimited)

Allowable Variation Parameters:

• Tolerance: May be equal to or tighter than ±0.5%
• Power rating: May be equal to or greater than 0.25W
• Temperature coefficient: May be equal to or lower absolute value
• Operating temperature range: Must encompass or match the -55°C to 155°C range
• Automotive qualification: AEC-Q200 preferred but not mandatory for non-automotive applications

Substitute parts are organized by tolerance grade, with tighter tolerance parts (±0.1%) listed as direct alternatives, followed by parts with relaxed power ratings or temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Equivalent Performance):

RP73PF2A2K21BTDF (TE Connectivity) provides tighter tolerance (±0.1%) and lower temperature coefficient (±25ppm/°C) while maintaining identical power rating and temperature range. This part is suitable for applications where improved accuracy is beneficial and automotive qualification is not required.

Automotive-Qualified Alternatives:

ERA-6AEB2211V (Panasonic) and RG2012P-2211-B-T5 (Susumu) both retain AEC-Q200 automotive qualification with ±0.1% tolerance and ±25ppm/°C temperature coefficient. Both operate across the full -55°C to 155°C range. Power rating is reduced to 0.125W; this substitution is valid only when circuit design permits lower power dissipation. RG2012P-2211-B-T5 includes anti-sulfur protection.

General-Purpose Alternatives:

RT0805BRD072K21L and RT0805BRE072K21L (YAGEO) offer ±0.1% tolerance without automotive qualification. RT0805BRE072K21L maintains ±50ppm/°C temperature coefficient matching the original specification. Both are rated 0.125W and operate to 155°C maximum.

RT0805DRD072K21L (YAGEO) matches the original ±0.5% tolerance with ±25ppm/°C temperature coefficient and 0.125W power rating across the full temperature range.

Limited Substitution:

RR1220P-2211-D-M (Susumu) has reduced maximum operating temperature (125°C vs. 155°C) and lower power rating (0.1W). This part is suitable only for applications with operating temperature ceiling below 125°C and power dissipation below 0.1W.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower power rating?

A: Yes, if your circuit design ensures power dissipation does not exceed the substitute part's rating. A 0.125W rated part can replace a 0.25W part only when actual power dissipation remains below 0.125W. Verify circuit current and voltage to confirm compliance.

Q: What is the difference between ±0.5% and ±0.1% tolerance?

A: Tolerance defines the maximum deviation from the nominal resistance value. A ±0.5% part on 2.21 kΩ can range from 2.199 kΩ to 2.221 kΩ. A ±0.1% part ranges from 2.209 kΩ to 2.211 kΩ. Tighter tolerance (±0.1%) is suitable for precision circuits; ±0.5% is acceptable for general applications.

Q: Does temperature coefficient affect my circuit?

A: Temperature coefficient (ppm/°C) specifies resistance change per degree Celsius. A ±50ppm/°C part changes 0.11% per 100°C; a ±25ppm/°C part changes 0.055% per 100°C. For circuits operating across wide temperature ranges or requiring high stability, lower temperature coefficient is preferable.

Q: Is AEC-Q200 qualification required?

A: AEC-Q200 is mandatory for automotive applications subject to automotive reliability standards. For non-automotive industrial or consumer applications, AEC-Q200 is not required but indicates higher reliability screening and qualification.

Q: Can I substitute a part with different operating temperature range?

A: Only if the substitute's range encompasses your application's temperature requirements. The original part operates -55°C to 155°C. RR1220P-2211-D-M operates only to 125°C and is unsuitable for applications requiring 155°C operation.

Q: Are all these parts in the same 0805 package?

A: Yes. All listed parts use 0805 (2012 Metric) package with identical footprint dimensions (0.079" L × 0.049" W). Physical board layout compatibility is guaranteed.