RC1608F4322CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F4322CS is a 43.2 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.1W (1/10W) power dissipation in 0603 (1608 Metric) surface mount package. This component is classified as Active product status with moisture resistant construction and unlimited moisture sensitivity level (MSL 1). The part is supplied in Tape & Reel packaging format.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical compatibility (package type, physical dimensions, termination count). Substitute parts enable design flexibility, supply chain alternatives, and application-specific feature selection such as automotive qualification.

Key Parameters

Parameter	Value	Unit
Resistance	43.2	kOhms
Tolerance	±1	%
Power Rating	0.1	W (1/10W)
Composition	Thick Film
Temperature Coefficient	±100	ppm/°C
Operating Temperature Range	-55 to 155	°C
Package / Case	0603 (1608 Metric)
Physical Dimensions (Typical)	1.60 x 0.80	mm (L x W)
Height - Seated (Max)	0.55	mm
Number of Terminations	2
Moisture Sensitivity Level (MSL)	1	Unlimited
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution logic is based on strict electrical and mechanical parameter matching. All substitute parts listed maintain identical or equivalent specifications across the following critical parameters:

Electrical Equivalence Criteria:

Resistance value: 43.2 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.1W / 1/10W (exact match required)
Temperature coefficient: ±100 ppm/°C (exact match required)
Operating temperature range: -55°C to 155°C (exact match required)
Composition: Thick Film (exact match required)

Mechanical Compatibility Criteria:

Package type: 0603 (1608 Metric) surface mount (exact match required)
Number of terminations: 2 (exact match required)
Physical dimensions: 1.60mm length, 0.80mm width nominal (minor dimensional variations within 0.05mm acceptable per IEC standards)
Height seated maximum: 0.55mm nominal (minor variations within 0.05mm acceptable)
Packaging format: Tape & Reel (TR)

Compliance & Certification Criteria:

Moisture Sensitivity Level: MSL 1 (Unlimited) for all parts
ECCN: EAR99 (all parts)
HTSUS: 8533.21.0030 (all parts)

Substitute parts are categorized as Direct Manufacturer Equivalents (matching all parameters without additional features) or Similar Parts with Enhanced Features (automotive AEC-Q200 qualification). All substitute parts are Active product status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance (kOhms)	Tolerance (%)	Power (W)	Temp Coeff (ppm/°C)	Op Temp (°C)	Package	Dimensions (mm)	Height Max (mm)	Features	RoHS Status	Automotive AEC-Q200
RC1608F4322CS	Samsung Electro-Mechanics	43.2	±1	0.1	±100	-55 to 155	0603	1.60 x 0.80	0.55	Moisture Resistant	ROHS3 Compliant	No
CR0603-FX-4322ELF	Bourns Inc.	43.2	±1	0.1	±100	-55 to 155	0603	1.60 x 0.80	0.55	Moisture Resistant	ROHS3 Compliant	No
RC0603FR-0743K2L	YAGEO	43.2	±1	0.1	±100	-55 to 155	0603	1.60 x 0.80	0.55	Moisture Resistant	ROHS3 Compliant	No
AC0603FR-0743K2L	YAGEO	43.2	±1	0.1	±100	-55 to 155	0603	1.60 x 0.80	0.55	Automotive AEC-Q200, Moisture Resistant	ROHS3 Compliant	Yes
CRCW060343K2FKEA	Vishay Dale	43.2	±1	0.1	±100	-55 to 155	0603	1.55 x 0.85	0.50	Automotive AEC-Q200	ROHS3 Compliant	Yes
CRCW060343K2FKTA	Vishay Dale	43.2	±1	0.1	±100	-55 to 155	0603	1.60 x 0.85	0.50	Automotive AEC-Q200	RoHS non-compliant	Yes
ERJ-3EKF4322V	Panasonic Electronic Components	43.2	±1	0.1	±100	-55 to 155	0603	1.60 x 0.80	0.55	Automotive AEC-Q200	ROHS3 Compliant	Yes
RMCF0603FT43K2	Stackpole Electronics Inc	43.2	±1	0.1	±100	-55 to 155	0603	1.55 x 0.80	0.55	Automotive AEC-Q200	ROHS3 Compliant	Yes

Engineering Selection Recommendations

Direct Manufacturer Equivalents (No Additional Qualifications):

CR0603-FX-4322ELF (Bourns Inc.) and RC0603FR-0743K2L (YAGEO) are direct electrical and mechanical equivalents to RC1608F4322CS. Both parts maintain identical electrical specifications, physical dimensions, and RoHS3 compliance. These parts are suitable for applications where automotive qualification is not required and standard industrial moisture resistance is sufficient.

Automotive-Qualified Alternatives (AEC-Q200):

AC0603FR-0743K2L (YAGEO), ERJ-3EKF4322V (Panasonic Electronic Components), and RMCF0603FT43K2 (Stackpole Electronics Inc) are functionally equivalent with the addition of AEC-Q200 automotive qualification. These parts meet automotive reliability and quality standards and are suitable for automotive and high-reliability applications. All three maintain ROHS3 compliance and identical electrical performance.

CRCW060343K2FKEA (Vishay Dale) is AEC-Q200 qualified and ROHS3 compliant. Physical dimensions show minor variation (1.55mm length, 0.50mm height maximum) within acceptable tolerance ranges for 0603 package footprints.

Non-Compliant Alternative (Restricted Use):

CRCW060343K2FKTA (Vishay Dale) carries RoHS non-compliance and REACH Affected status. This part is electrically and mechanically equivalent but is restricted for applications subject to RoHS3 or REACH regulatory requirements. Use is limited to legacy systems or applications with explicit regulatory exemptions.

Selection Basis:

Part selection should be determined by application requirements: standard industrial applications accept any direct equivalent; automotive and regulated applications require AEC-Q200 qualified parts with ROHS3 compliance; legacy or exempted applications may utilize non-compliant alternatives where regulatory approval is documented.

Frequently Asked Questions (FAQ)

Q: Can RC0603FR-0743K2L replace RC1608F4322CS in any application?

A: Yes. RC0603FR-0743K2L is a direct electrical and mechanical equivalent. Both parts share identical resistance (43.2 kOhms), tolerance (±1%), power rating (0.1W), temperature coefficient (±100 ppm/°C), operating temperature range (-55°C to 155°C), package type (0603), and physical dimensions (1.60mm x 0.80mm). Both are ROHS3 compliant with MSL 1 rating. No design changes are required.

Q: What is the difference between automotive-qualified and non-automotive parts?

A: Automotive-qualified parts (AC0603FR-0743K2L, ERJ-3EKF4322V, RMCF0603FT43K2, CRCW060343K2FKEA) carry AEC-Q200 certification, indicating compliance with automotive reliability, quality, and testing standards. Non-automotive parts (RC1608F4322CS, CR0603-FX-4322ELF, RC0603FR-0743K2L) do not carry this certification. Automotive applications, particularly in safety-critical systems, require AEC-Q200 qualified components. Electrical performance is identical; qualification status differs.

Q: Are there physical dimension differences between substitute parts?

A: Minor dimensional variations exist within 0603 package tolerance ranges. Most parts maintain 1.60mm length and 0.80mm width. CRCW060343K2FKEA and RMCF0603FT43K2 show 1.55mm length (0.05mm variation). CRCW060343K2FKEA and CRCW060343K2FKTA show 0.50mm maximum height versus 0.55mm nominal. These variations are within IEC 60603-7 tolerance specifications for 0603 packages and do not affect PCB footprint compatibility or electrical performance.

Q: Which substitute part has the highest inventory availability?

A: ERJ-3EKF4322V (Panasonic Electronic Components) has 134,901 pieces in stock, the highest availability among all listed substitutes. RC0603FR-0743K2L (YAGEO) has 82,768 pieces. RMCF0603FT43K2 (Stackpole Electronics Inc) has 77,486 pieces. Inventory levels support high-volume production requirements.

Q: Can CRCW060343K2FKTA be used in RoHS-regulated applications?

A: No. CRCW060343K2FKTA is marked as RoHS non-compliant and REACH Affected. This part cannot be used in applications subject to RoHS3 or REACH regulatory requirements. Use is restricted to legacy systems or applications with documented regulatory exemptions. For RoHS-compliant applications, select ROHS3 Compliant alternatives: CR0603-FX-4322ELF, RC0603FR-0743K2L, AC0603FR-0743K2L, CRCW060343K2FKEA, ERJ-3EKF4322V, or RMCF0603FT43K2.

Q: Are all substitute parts suitable for the full operating temperature range?

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

Q: What is MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 indicates the lowest moisture sensitivity level. Components rated MSL 1 have unlimited shelf life and do not require special moisture control during storage, handling, or assembly. All listed parts carry MSL 1 rating, eliminating moisture-related supply chain constraints.

Q: Which substitute offers the best cost-to-availability ratio for high-volume orders?

A: This determination requires current pricing data not provided in technical specifications. Inventory availability alone shows ERJ-3EKF4322V (134,901 pcs), RC0603FR-0743K2L (82,768 pcs), and RMCF0603FT43K2 (77,486 pcs) as high-availability options. Consult supplier pricing for cost analysis.

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