RC1608J393CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J393CS is a 39 kOhms ±5% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with moisture-resistant characteristics and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct circuit board compatibility and functional interchangeability.

Key Parameters

Parameter	Value
Resistance	39 kOhms
Tolerance	±5%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Operating Temperature Range	-55°C ~ 155°C
Temperature Coefficient	±100ppm/°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitute parts for the RC1608J393CS are categorized based on strict electrical and mechanical parameter matching:

Direct Equivalents (Same Tolerance ±5%): Parts maintaining identical resistance value, tolerance, power rating, package dimensions, and operating temperature range. These components are functionally interchangeable without circuit performance impact.

Upgrade Options (Tighter Tolerance ±1%): Parts with improved tolerance specification while maintaining all other core parameters. These provide enhanced accuracy for precision applications.

Automotive-Qualified Variants (AEC-Q200): Parts meeting automotive qualification standards with identical or compatible electrical specifications. These include both ±5% and ±1% tolerance options.

Key Substitution Criteria:

Resistance: 39 kOhms (exact match required)
Package: 0603 (1608 Metric) (exact match required)
Power Rating: 0.1W minimum (exact match required)
Operating Temperature: -55°C ~ 155°C (minimum requirement)
Composition: Thick Film (required)
RoHS Compliance: ROHS3 (required)
MSL Rating: 1 (Unlimited) (required)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Features	Packaging
RC1608J393CS	Samsung Electro-Mechanics	39 kOhms	±5%	0.1	±100	-55 ~ 155	Moisture Resistant	Tape & Reel (TR)
RC0603JR-0739KL	YAGEO	39 kOhms	±5%	0.1	±100	-55 ~ 155	Moisture Resistant	Cut Tape (CT) & Digi-Reel®
RMCF0603JT39K0	Stackpole Electronics Inc	39 kOhms	±5%	0.1	±200	-55 ~ 155	Automotive AEC-Q200	Tape & Reel (TR)
CRG0603F39K	TE Connectivity Passive Product	39 kOhms	±1%	0.1	±100	-55 ~ 155	—	Tape & Reel (TR)
ERJ-3EKF3902V	Panasonic Electronic Components	39 kOhms	±1%	0.1	±100	-55 ~ 155	Automotive AEC-Q200	Tape & Reel (TR)
ERJ-3GEYJ393V	Panasonic Electronic Components	39 kOhms	±5%	0.1	±200	-55 ~ 155	Automotive AEC-Q200	Tape & Reel (TR)
RC0603FR-0739KL	YAGEO	39 kOhms	±1%	0.1	±100	-55 ~ 155	Moisture Resistant	Cut Tape (CT) & Digi-Reel®
RMCF0603FT39K0	Stackpole Electronics Inc	39 kOhms	±1%	0.1	±100	-55 ~ 155	Automotive AEC-Q200	Tape & Reel (TR)
RMCF0603JG39K0	Stackpole Electronics Inc	39 kOhms	±5%	0.1	±200	-55 ~ 155	Automotive AEC-Q200	Tape & Reel (TR)
AC0603JR-0739KL	YAGEO	39 kOhms	±5%	0.1	±100	-55 ~ 155	Automotive AEC-Q200, Moisture Resistant	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement (Non-Automotive Applications): RC0603JR-0739KL (YAGEO) provides equivalent electrical and mechanical specifications with identical tolerance and temperature coefficient. Both components maintain ROHS3 compliance and MSL 1 rating. Packaging format differs (Cut Tape & Digi-Reel® versus Tape & Reel), which may affect procurement and assembly processes.

For Automotive Applications (AEC-Q200 Required): RMCF0603JT39K0 (Stackpole Electronics Inc) or ERJ-3GEYJ393V (Panasonic Electronic Components) provide AEC-Q200 qualification with matching ±5% tolerance. Both maintain the required operating temperature range and ROHS3 compliance. Temperature coefficient differs (±200ppm/°C versus ±100ppm/°C), which affects long-term stability in temperature-cycling environments.

For Precision Applications (±1% Tolerance Required): RC0603FR-0739KL (YAGEO) or RMCF0603FT39K0 (Stackpole Electronics Inc) offer tighter tolerance with ±100ppm/°C temperature coefficient. RMCF0603FT39K0 includes AEC-Q200 qualification for automotive use. Both maintain ROHS3 compliance and MSL 1 rating.

For Combined Automotive and Precision Requirements: ERJ-3EKF3902V (Panasonic Electronic Components) or RMCF0603FT39K0 (Stackpole Electronics Inc) combine AEC-Q200 qualification with ±1% tolerance and ±100ppm/°C temperature coefficient.

For Moisture-Resistant Applications: AC0603JR-0739KL (YAGEO) combines moisture-resistant properties with AEC-Q200 qualification and ±5% tolerance, providing enhanced environmental protection for humid or corrosive operating conditions.

Frequently Asked Questions (FAQ)

Q: Can RC0603JR-0739KL replace RC1608J393CS in all applications? A: RC0603JR-0739KL is electrically and mechanically equivalent with identical resistance, tolerance, power rating, and operating temperature range. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Compatibility depends on assembly equipment capability to handle the specified packaging format.

Q: What is the difference between ±5% and ±1% tolerance options? A: Tolerance specifies the maximum deviation from the nominal 39 kOhm value. ±5% tolerance allows deviation up to 1.95 kOhms; ±1% tolerance limits deviation to 0.39 kOhms. Applications requiring precise impedance matching or filter tuning benefit from ±1% tolerance. General-purpose circuits typically function within ±5% tolerance.

Q: Are automotive-qualified parts (AEC-Q200) suitable for non-automotive applications? A: Yes. AEC-Q200 qualification indicates enhanced reliability testing and quality assurance. These parts are fully compatible with non-automotive applications and provide equivalent or superior performance compared to non-qualified alternatives.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity? A: MSL 1 indicates the component has unlimited shelf life without moisture bake-out requirements. The component can be stored in standard conditions without special humidity control or pre-reflow baking procedures.

Q: How does temperature coefficient affect circuit performance? A: Temperature coefficient (±100ppm/°C or ±200ppm/°C) specifies resistance change per degree Celsius. A 39 kOhm resistor with ±100ppm/°C changes approximately 3.9 ohms per °C; ±200ppm/°C changes approximately 7.8 ohms per °C. Applications with wide temperature operation or precision requirements benefit from lower temperature coefficients.

Q: Can parts with different packaging formats be used interchangeably on the same PCB? A: No. Packaging format (Tape & Reel versus Cut Tape & Digi-Reel®) affects assembly equipment compatibility and handling procedures. PCB design and assembly equipment must support the specified packaging format. Substitution requires verification that assembly equipment can process the alternative packaging.

Q: What is the significance of ROHS3 compliance? A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All listed substitute parts maintain ROHS3 compliance, ensuring regulatory compatibility for EU and equivalent markets.

Q: Are there any performance differences between manufacturers for the same specifications? A: All listed parts meet identical electrical specifications (39 kOhms, ±5% or ±1%, 0.1W, 0603 package). Differences exist in manufacturing processes, quality certifications (AEC-Q200), and environmental features (moisture resistance). Selection should prioritize application requirements and supply chain availability.

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