RC1608J624CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J624CS is a 620 kOhms ±5% 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-purpose applications requiring standard tolerance resistive elements.

Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand enhanced specifications such as tighter tolerance or automotive qualification, or when supply chain optimization requires alternative sourcing from qualified manufacturers.

Key Parameters

Parameter	Value	Substitution Relevance
Resistance Value	620 kOhms	Critical - must match exactly
Tolerance	±5%	Critical - determines circuit accuracy requirements
Power Rating	0.1W (1/10W)	Critical - must meet or exceed thermal dissipation needs
Package / Case	0603 (1608 Metric)	Critical - physical and electrical compatibility
Composition	Thick Film	Critical - determines electrical characteristics and reliability
Temperature Coefficient	±100ppm/°C or ±200ppm/°C	Important - affects performance across temperature range
Operating Temperature Range	-55°C ~ 155°C	Critical - must support application environment
RoHS Status	ROHS3 Compliant	Regulatory - required for most commercial applications
Moisture Sensitivity Level	MSL 1 (Unlimited)	Important - affects storage and handling requirements

Substitute Part Grouping Explanation

Substitution logic for the RC1608J624CS is based on strict electrical and mechanical parameter matching within the following framework:

Primary Substitution Criteria (Non-Negotiable):

Resistance value: 620 kOhms (exact match required)
Package format: 0603 (1608 Metric) (exact match required)
Power rating: 0.1W minimum (equal or higher acceptable)
Composition: Thick Film (maintains electrical characteristics)
Operating temperature range: -55°C ~ 155°C minimum (equal or wider acceptable)
RoHS3 compliance: Required for regulatory compatibility

Secondary Substitution Parameters (Flexible Within Limits):

Tolerance: ±5% (original specification) or ±1% (tighter tolerance acceptable as upgrade)
Temperature coefficient: ±100ppm/°C (original) or ±200ppm/°C (acceptable variance)
Moisture sensitivity: MSL 1 (original) or equivalent
Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® (both acceptable for assembly)

Upgrade Specifications (Enhanced Performance):

Automotive AEC-Q200 qualification (optional enhancement)
Tighter tolerance ±1% (improves circuit accuracy)
High voltage capability (optional enhancement)

Substitute parts are grouped into two categories: Direct Equivalents (matching all original specifications) and Upgrade Options (enhanced specifications with maintained core compatibility).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Features	Product Status
RC1608J624CS	Samsung Electro-Mechanics	620k	±5%	0.1	±100	-55 ~ 155	0603	Moisture Resistant	Active
RC0603JR-07620KL	YAGEO	620k	±5%	0.1	±100	-55 ~ 155	0603	Moisture Resistant	Active
CRG0603F620K	TE Connectivity	620k	±1%	0.1	±100	-55 ~ 155	0603	None	Active
ERJ-3EKF6203V	Panasonic	620k	±1%	0.1	±100	-55 ~ 155	0603	Automotive AEC-Q200	Active
ERJ-3GEYJ624V	Panasonic	620k	±5%	0.1	±200	-55 ~ 155	0603	Automotive AEC-Q200	Active
KTR03EZPF6203	Rohm Semiconductor	620k	±1%	0.1	±100	-55 ~ 155	0603	Automotive AEC-Q200, High Voltage	Active
MCR03ERTJ624	Rohm Semiconductor	620k	±5%	0.1	±200	-55 ~ 155	0603	None	Discontinued at DiGi Electronics
RC0603FR-07620KL	YAGEO	620k	±1%	0.1	±100	-55 ~ 155	0603	Moisture Resistant	Active
RMCF0603FT620K	Stackpole Electronics	620k	±1%	0.1	±100	-55 ~ 155	0603	Automotive AEC-Q200	Active
RMCF0603JT620K	Stackpole Electronics	620k	±5%	0.1	±200	-55 ~ 155	0603	Automotive AEC-Q200	Active

Engineering Selection Recommendations

Direct Equivalent Selection (Identical Specifications):

RC0603JR-07620KL (YAGEO) serves as the primary direct equivalent to RC1608J624CS. Both components share identical electrical specifications: 620 kOhms ±5% tolerance, 0.1W power rating, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both feature moisture-resistant thick film construction and maintain Active product status. YAGEO inventory availability (15,207 pieces) provides reliable supply continuity. This part is suitable for direct substitution in applications where the original Samsung component becomes unavailable.

Upgrade Selection for Enhanced Tolerance (±1% Tolerance):

RC0603FR-07620KL (YAGEO) provides tighter tolerance specification (±1% versus ±5%) while maintaining all other parameters identical to the original part, including moisture-resistant construction and Active status. With 211,522 pieces in inventory, this upgrade option improves circuit accuracy without requiring design modifications. Selection is appropriate when circuit performance benefits from reduced resistance value variation.

Automotive-Qualified Alternatives (AEC-Q200):

ERJ-3EKF6203V (Panasonic), RMCF0603FT620K (Stackpole Electronics), and KTR03EZPF6203 (Rohm Semiconductor) all provide ±1% tolerance with Automotive AEC-Q200 qualification. These parts are suitable for applications requiring automotive-grade reliability. ERJ-3EKF6203V offers the highest inventory (73,251 pieces). RMCF0603FT620K provides AEC-Q200 qualification with 103,111 pieces available. KTR03EZPF6203 adds high voltage capability with 7,218 pieces in stock.

Avoid Selection:

MCR03ERTJ624 (Rohm Semiconductor) is marked as Discontinued at DiGi Electronics and should not be selected for new designs despite matching electrical specifications.

All recommended substitutes maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can RC0603JR-07620KL replace RC1608J624CS in existing designs without modification?

A: Yes. RC0603JR-07620KL is a direct equivalent with identical resistance value (620 kOhms), tolerance (±5%), power rating (0.1W), package format (0603), and operating temperature range (-55°C to 155°C). Both components use thick film construction with moisture-resistant properties. No circuit redesign is required.

Q: What is the difference between ±5% and ±1% tolerance specifications?

A: Tolerance defines the maximum deviation of actual resistance value from the nominal 620 kOhms specification. ±5% tolerance allows deviation between 589 kOhms and 651 kOhms. ±1% tolerance restricts deviation to 613.8 kOhms and 626.2 kOhms. Tighter tolerance (±1%) improves circuit accuracy but does not affect physical compatibility or thermal performance.

Q: Are automotive AEC-Q200 qualified parts compatible with non-automotive applications?

A: Yes. AEC-Q200 qualification represents enhanced reliability testing and quality standards. Parts meeting automotive specifications are fully compatible with general-purpose applications. Selection of AEC-Q200 qualified parts provides additional reliability margin without design impact.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. The component does not absorb moisture that could cause damage during soldering. This specification applies to all listed substitute parts.

Q: Can I use RMCF0603FT620K (±1% tolerance) in place of RC1608J624CS (±5% tolerance)?

A: Yes. RMCF0603FT620K provides tighter tolerance (±1%) than the original specification (±5%), making it a compatible upgrade. The component maintains identical 620 kOhms resistance value, 0.1W power rating, 0603 package format, and -55°C to 155°C operating range. The tighter tolerance improves circuit accuracy without requiring design changes.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Both packaging formats contain identical components with different delivery methods. Tape & Reel (TR) provides continuous reel format suitable for automated assembly equipment. Cut Tape (CT) & Digi-Reel® provides smaller quantities in tape format. Selection depends on assembly equipment capability and order quantity requirements. Electrical and mechanical specifications remain identical regardless of packaging format.

Q: Why is MCR03ERTJ624 listed but marked as discontinued?

A: MCR03ERTJ624 is documented as a historical equivalent with matching electrical specifications (620 kOhms ±5%, 0.1W, 0603 package). However, DiGi Electronics discontinuation status indicates unavailability through standard distribution channels. New designs should select from Active status alternatives such as RC0603JR-07620KL or RC0603FR-07620KL.

Q: Do all substitute parts maintain the same physical dimensions?

A: All listed substitute parts use 0603 (1608 Metric) package format with identical length (0.063" / 1.60mm) and width (0.031" / 0.80mm). Maximum seated height is 0.022" (0.55mm) for all parts. RMCF series components show slight length variation (0.061" / 1.55mm) but remain within 0603 package specification and are physically compatible with PCB layouts designed for standard 0603 components.

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

A: Temperature coefficient (±100ppm/°C or ±200ppm/°C) defines how resistance value changes with temperature. ±100ppm/°C indicates 0.01% resistance change per degree Celsius. ±200ppm/°C indicates 0.02% change per degree Celsius. Both specifications maintain acceptable performance across the -55°C to 155°C operating range. Selection depends on circuit sensitivity to resistance variation across temperature extremes.

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