RC1608F4220CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F4220CS is a 422 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status with moisture-resistant construction and unlimited moisture sensitivity level (MSL 1). The part is RoHS3 compliant and REACH unaffected, suitable for general industrial and consumer applications requiring precision resistive elements in compact surface-mount form factors.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization requires alternative sourcing, or when design flexibility permits selection from multiple qualified manufacturers meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Specification Basis
Resistance Value	422 Ohms	Core electrical specification
Tolerance	±1%	Precision grade classification
Power Rating	0.1W (1/10W)	Thermal dissipation capacity
Package / Case	0603 (1608 Metric)	Physical form factor and PCB footprint
Composition	Thick Film	Manufacturing technology
Temperature Coefficient	±100ppm/°C	Stability over temperature range
Operating Temperature Range	-55°C to +155°C	Environmental operating limits
Terminations	2	Connection points
RoHS Status	ROHS3 Compliant	Environmental regulation compliance
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F4220CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 422 Ohms (exact match required)
Tolerance: ±1% (precision grade must match)
Power rating: 0.1W / 1/10W (thermal capacity must match)
Package / Case: 0603 (1608 Metric) (footprint compatibility required)
Composition: Thick Film (manufacturing technology must match)
Temperature coefficient: ±100ppm/°C (stability specification must match)
Operating temperature range: -55°C to +155°C (environmental limits must match)
Number of terminations: 2 (connection configuration must match)
RoHS Status: ROHS3 Compliant (regulatory compliance must match)
Moisture Sensitivity Level: 1 (handling requirements must match)

All substitute parts listed below meet these mandatory parameters. Substitutes are categorized as Direct (pin-compatible, electrically identical), Upgrade (enhanced features while maintaining base specifications), or Similar (additional certifications such as AEC-Q200 automotive qualification).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Product Status	Packaging Type
RC1608F4220CS	Samsung Electro-Mechanics	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	Moisture Resistant	Active	Tape & Reel
CR0603-FX-4220ELF	Bourns Inc.	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	Moisture Resistant	Active	Tape & Reel
RC0603FR-07422RL	YAGEO	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	Moisture Resistant	Active	Tape & Reel
MCR03ERTF4220	Rohm Semiconductor	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	None Listed	Discontinued at DiGi Electronics	Cut Tape & Digi-Reel
AC0603FR-07422RL	YAGEO	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200, Moisture Resistant	Active	Tape & Reel
CRCW0603422RFKEA	Vishay Dale	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200	Active	Tape & Reel
ERJ-3EKF4220V	Panasonic Electronic Components	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200	Active	Cut Tape & Digi-Reel
RMCF0603FT422R	Stackpole Electronics Inc	422 Ω	±1%	0.1	0603	±100ppm/°C	-55 to +155°C	Automotive AEC-Q200	Active	Tape & Reel

Engineering Selection Recommendations

Direct Substitutes (Electrically and Mechanically Identical):

CR0603-FX-4220ELF (Bourns Inc.) and RC0603FR-07422RL (YAGEO) are direct substitutes meeting all mandatory parameters with Active product status. Both are available in Tape & Reel packaging and maintain identical moisture-resistant characteristics and RoHS3 compliance. Selection between these and the primary part depends on supply availability and procurement lead times.

Upgrade Substitute (Enhanced Certification):

MCR03ERTF4220 (Rohm Semiconductor) meets all electrical and mechanical specifications but carries Discontinued at DiGi Electronics status. This part should be avoided for new designs or long-term production commitments due to supply discontinuation risk.

Similar Substitutes (Automotive-Qualified Variants):

AC0603FR-07422RL (YAGEO), CRCW0603422RFKEA (Vishay Dale), ERJ-3EKF4220V (Panasonic Electronic Components), and RMCF0603FT422R (Stackpole Electronics Inc.) all include Automotive AEC-Q200 certification in addition to base specifications. These parts are suitable for applications requiring automotive-grade reliability and qualification. All four maintain Active product status with robust supply availability.

Selection Basis:

For general industrial applications: CR0603-FX-4220ELF or RC0603FR-07422RL
For automotive or mission-critical applications: AC0603FR-07422RL, CRCW0603422RFKEA, ERJ-3EKF4220V, or RMCF0603FT422R
Avoid MCR03ERTF4220 due to discontinued status

Frequently Asked Questions (FAQ)

Q: Can I substitute RC1608F4220CS with a part having different tolerance?

A: No. Tolerance is a mandatory matching parameter. The RC1608F4220CS specifies ±1% tolerance. Substitutes must maintain ±1% tolerance to ensure circuit performance and design compliance. Parts with ±5% or other tolerance grades are not interchangeable.

Q: Are automotive-qualified parts (AEC-Q200) backward compatible with general industrial designs?

A: Yes. Automotive-qualified parts such as AC0603FR-07422RL, CRCW0603422RFKEA, ERJ-3EKF4220V, and RMCF0603FT422R meet or exceed all base specifications of the RC1608F4220CS. AEC-Q200 certification represents additional qualification testing and does not restrict use in non-automotive applications. These parts are suitable for any application accepting the base RC1608F4220CS specification.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Both packaging types contain identical components. Tape & Reel packaging is continuous and suitable for high-volume automated assembly. Cut Tape & Digi-Reel packaging provides smaller quantities on cut tape segments, suitable for lower-volume production or prototyping. Component electrical and mechanical specifications remain identical regardless of packaging format.

Q: Why does CRCW0603422RFKEA show slightly different physical dimensions?

A: CRCW0603422RFKEA dimensions are listed as 0.061" L x 0.033" W (1.55mm x 0.85mm) versus the standard 0.063" L x 0.031" W (1.60mm x 0.80mm). These minor variations fall within 0603 package tolerance specifications and do not affect PCB footprint compatibility. Both dimensions are acceptable for 0603 (1608 Metric) package classification.

Q: Is MCR03ERTF4220 still available for new designs?

A: MCR03ERTF4220 is listed as Discontinued at DiGi Electronics. This status indicates limited or no future availability. New designs should not specify this part number. Select from Active status alternatives: CR0603-FX-4220ELF, RC0603FR-07422RL, AC0603FR-07422RL, CRCW0603422RFKEA, ERJ-3EKF4220V, or RMCF0603FT422R.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, matching the environmental compliance status of the RC1608F4220CS. This compliance is maintained across all manufacturers and product variants.

Q: Can I use these substitutes in high-temperature applications?

A: Yes. All substitute parts maintain the operating temperature range of -55°C to +155°C with ±100ppm/°C temperature coefficient, identical to the RC1608F4220CS. Temperature performance is equivalent across all listed alternatives.

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