RC1005F4642CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F4642CS is a 46.4 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device (SMD) is rated at 0.063W (1/16W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are necessary to address supply chain continuity, inventory optimization, and application-specific requirements such as automotive qualification or enhanced power ratings.

Key Parameters

Parameter	Value
Resistance	46.4 kOhms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package / Case	0402 (1005 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F4642CS is determined by strict equivalence across the following critical parameters: resistance value (46.4 kOhms), tolerance (±1%), package format (0402 / 1005 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). All substitute parts listed maintain these core electrical and mechanical specifications. Secondary differentiators include power rating (0.063W standard or 0.1W upgrade), feature set (moisture resistant, automotive AEC-Q200 qualification), and regulatory compliance (ROHS3, REACH status). Parts are grouped into three categories: Direct Equivalents (identical specifications), Upgrade Options (enhanced power rating), and Similar Parts (additional certifications or feature variations).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS Status	Inventory (Pcs)
RC1005F4642CS	Samsung Electro-Mechanics	46.4 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3 Compliant	746
CR0402-FX-4642GLF	Bourns Inc.	46.4 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	—	ROHS3 Compliant	48739
RC0402FR-0746K4L	YAGEO	46.4 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3 Compliant	194011
ERJ-2RKF4642X	Panasonic Electronic Components	46.4 kOhms	±1%	0.1	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant	166294
AC0402FR-0746K4L	YAGEO	46.4 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3 Compliant	46881
CRCW040246K4FKED	Vishay Dale	46.4 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant	7980
CRCW040246K4FKTD	Vishay Dale	46.4 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	RoHS non-compliant	22725
RMCF0402FT46K4	Stackpole Electronics Inc	46.4 kOhms	±1%	0.063	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3 Compliant	132536

Engineering Selection Recommendations

Direct Equivalents (Identical Specifications): CR0402-FX-4642GLF (Bourns Inc.) and RC0402FR-0746K4L (YAGEO) are direct functional equivalents to the RC1005F4642CS. Both maintain identical resistance, tolerance, power rating, package format, and temperature specifications. RC0402FR-0746K4L includes moisture resistant construction matching the original part. Both are ROHS3 compliant with active product status.

Upgrade Option (Enhanced Power Rating): ERJ-2RKF4642X (Panasonic Electronic Components) provides a 0.1W (1/10W) power rating compared to the standard 0.063W, offering increased thermal headroom for applications requiring higher power dissipation margins. This part includes automotive AEC-Q200 qualification and maintains all other electrical parameters. Selection is appropriate when design margins or application requirements justify the upgraded power specification.

Automotive-Qualified Alternatives: AC0402FR-0746K4L (YAGEO), CRCW040246K4FKED (Vishay Dale), and RMCF0402FT46K4 (Stackpole Electronics Inc) are suitable for applications requiring automotive AEC-Q200 certification. AC0402FR-0746K4L additionally includes moisture resistant construction. All three maintain ROHS3 compliance and identical electrical specifications to the original part.

Compliance Consideration: CRCW040246K4FKTD (Vishay Dale) is RoHS non-compliant and REACH affected. Selection of this part is restricted to applications where regulatory exemptions apply or legacy system requirements mandate non-compliant components.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-4642GLF directly replace RC1005F4642CS in existing designs? A: Yes. CR0402-FX-4642GLF maintains identical electrical specifications (46.4 kOhms ±1%, 0.063W, ±100ppm/°C) and package format (0402). Both are ROHS3 compliant with MSL 1 rating. No design modification is required.

Q: What is the difference between RC0402FR-0746K4L and CR0402-FX-4642GLF? A: Both are direct equivalents with identical electrical and mechanical specifications. The primary difference is manufacturer: RC0402FR-0746K4L is manufactured by YAGEO and includes moisture resistant construction, while CR0402-FX-4642GLF is manufactured by Bourns Inc. Selection depends on supply chain preference and inventory availability.

Q: When should ERJ-2RKF4642X be selected instead of the standard 0.063W rating? A: ERJ-2RKF4642X provides 0.1W power rating and is selected when circuit analysis indicates power dissipation approaching or exceeding 0.063W limits, or when design margins require thermal headroom. The part is automotive AEC-Q200 qualified, making it suitable for automotive applications requiring enhanced reliability.

Q: Are automotive-qualified parts (AEC-Q200) backward compatible with non-automotive designs? A: Yes. Automotive-qualified parts such as AC0402FR-0746K4L, CRCW040246K4FKED, and RMCF0402FT46K4 meet or exceed specifications required for general industrial and consumer applications. AEC-Q200 certification indicates enhanced qualification testing and reliability margins, making these parts suitable for any application accepting the original RC1005F4642CS.

Q: Why is CRCW040246K4FKTD marked as RoHS non-compliant? A: CRCW040246K4FKTD does not meet ROHS3 compliance requirements and is REACH affected. This part is restricted to applications with documented regulatory exemptions or legacy system requirements. For new designs, ROHS3-compliant alternatives are required.

Q: What is the significance of moisture resistant construction in RC0402FR-0746K4L and AC0402FR-0746K4L? A: Moisture resistant construction provides enhanced protection against humidity ingress and corrosion in high-humidity or harsh environmental conditions. The original RC1005F4642CS includes this feature. RC0402FR-0746K4L and AC0402FR-0746K4L maintain this specification, while CR0402-FX-4642GLF does not specify moisture resistance.

Q: Can parts with different manufacturers be mixed in the same production batch? A: Yes, provided all selected parts meet the design specification requirements. Mixing manufacturers is common practice for supply chain resilience. Ensure all parts maintain identical electrical specifications, package format, and required certifications (ROHS3, AEC-Q200, etc.) as specified in the design documentation.

Q: What inventory levels should be considered when selecting substitute parts? A: Inventory availability varies significantly: RC0402FR-0746K4L (YAGEO) has 194,011 pcs available, while CRCW040246K4FKED (Vishay Dale) has only 7,980 pcs. Higher inventory levels reduce supply chain risk for long-term production requirements. Inventory status should be verified at time of procurement.

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