RC1608J115CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J115CS is a 1.1 MOhm ±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 characteristics and ROHS3 compliance. Substitute parts are necessary when Samsung Electro-Mechanics inventory becomes unavailable, when alternative manufacturers offer improved specifications such as tighter tolerance or automotive qualification, or when supply chain optimization requires component standardization across multiple qualified sources.

Key Parameters

Parameter	Value	Specification Type
Resistance Value	1.1 MOhms	Primary
Tolerance	±5%	Primary
Power Rating	0.1W (1/10W)	Primary
Package / Case	0603 (1608 Metric)	Primary
Composition	Thick Film	Primary
Temperature Coefficient	±100ppm/°C	Secondary
Operating Temperature Range	-55°C ~ 155°C	Secondary
Moisture Sensitivity Level	1 (Unlimited)	Secondary
RoHS Status	ROHS3 Compliant	Compliance

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608J115CS is determined by strict equivalence across primary parameters: resistance value (1.1 MOhms), tolerance (±5%), power rating (0.1W), and package format (0603 / 1608 Metric). All substitute parts must maintain identical resistance and power specifications. Tolerance may be equal (±5%) or tighter (±1%) without functional impact. Temperature coefficient and operating temperature range must remain within or exceed the original specification. All substitute parts must maintain ROHS3 compliance and MSL 1 rating. Packaging format (Tape & Reel or Cut Tape) does not affect electrical equivalence but may affect procurement and assembly processes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Operating Temp (°C)	Features	Product Status	Packaging Type
RC1608J115CS	Samsung Electro-Mechanics	1.1 MOhms	±5%	0.1	0603	±100	-55 ~ 155	Moisture Resistant	Active	Tape & Reel
RC0603JR-071M1L	YAGEO	1.1 MOhms	±5%	0.1	0603	±100	-55 ~ 155	Moisture Resistant	Active	Tape & Reel
ERJ-3EKF1104V	Panasonic Electronic Components	1.1 MOhms	±1%	0.1	0603	±100	-55 ~ 155	Automotive AEC-Q200	Obsolete	Tape & Reel
KTR03EZPF1104	Rohm Semiconductor	1.1 MOhms	±1%	0.1	0603	±100	-55 ~ 155	Automotive AEC-Q200, High Voltage	Active	Tape & Reel
MCR03ERTJ115	Rohm Semiconductor	1.1 MOhms	±5%	0.1	0603	±200	-55 ~ 155	None specified	Discontinued at DiGi Electronics	Cut Tape & Digi-Reel
RMCF0603FT1M10	Stackpole Electronics Inc	1.1 MOhms	±1%	0.1	0603	±200	-55 ~ 155	Automotive AEC-Q200	Active	Tape & Reel
RMCF0603JT1M10	Stackpole Electronics Inc	1.1 MOhms	±5%	0.1	0603	±200	-55 ~ 155	Automotive AEC-Q200	Active	Tape & Reel

Engineering Selection Recommendations

Direct Equivalent (Same Tolerance, Same Features): RC0603JR-071M1L (YAGEO) is a direct functional equivalent with identical ±5% tolerance, moisture resistant characteristics, and Active product status. This part is suitable for direct substitution without circuit re-qualification.

Upgraded Specification (Tighter Tolerance): RMCF0603FT1M10 (Stackpole Electronics Inc) and ERJ-3EKF1104V (Panasonic Electronic Components) and KTR03EZPF1104 (Rohm Semiconductor) provide ±1% tolerance specification, which is tighter than the original ±5%. These parts are electrically compatible and may be substituted when improved tolerance performance is beneficial. RMCF0603FT1M10 and KTR03EZPF1104 maintain Active product status. ERJ-3EKF1104V is classified as Obsolete and should be avoided for new designs.

Automotive-Qualified Alternatives: RMCF0603FT1M10, RMCF0603JT1M10, KTR03EZPF1104, and ERJ-3EKF1104V carry AEC-Q200 automotive qualification. These parts are suitable for applications requiring automotive-grade reliability. RMCF0603FT1M10 and KTR03EZPF1104 are Active; RMCF0603JT1M10 is Active; ERJ-3EKF1104V is Obsolete.

Tolerance-Matched Alternatives: RMCF0603JT1M10 (Stackpole Electronics Inc) maintains the original ±5% tolerance with Active product status and Automotive AEC-Q200 qualification, providing a direct tolerance match with enhanced reliability features.

Avoid for New Designs: MCR03ERTJ115 (Rohm Semiconductor) is Discontinued at DiGi Electronics and should not be selected for new product designs. ERJ-3EKF1104V (Panasonic Electronic Components) is Obsolete and should not be selected for new product designs.

Frequently Asked Questions (FAQ)

Q: Can RC0603JR-071M1L replace RC1608J115CS directly? A: Yes. RC0603JR-071M1L is manufactured by YAGEO and provides identical electrical specifications: 1.1 MOhms ±5% tolerance, 0.1W power rating, 0603 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both parts are Active status and ROHS3 compliant. Direct substitution is supported without circuit modification.

Q: What is the difference between ±5% and ±1% tolerance parts? A: Tolerance defines the maximum deviation from the nominal resistance value. RC1608J115CS with ±5% tolerance allows resistance between 1.045 MOhms and 1.155 MOhms. Parts with ±1% tolerance (RMCF0603FT1M10, ERJ-3EKF1104V, KTR03EZPF1104) allow resistance between 1.089 MOhms and 1.111 MOhms. Tighter tolerance provides more precise resistance values and may improve circuit performance in precision applications. Substituting a ±1% part for a ±5% part is electrically compatible.

Q: Are Automotive AEC-Q200 parts suitable for non-automotive applications? A: Yes. Automotive AEC-Q200 qualification indicates enhanced reliability testing and quality standards. Parts meeting AEC-Q200 (RMCF0603FT1M10, RMCF0603JT1M10, KTR03EZPF1104, ERJ-3EKF1104V) are suitable for any application requiring the same electrical specifications. The automotive qualification does not restrict use to automotive circuits.

Q: Does packaging type (Tape & Reel vs. Cut Tape) affect electrical performance? A: No. Packaging type affects procurement, storage, and assembly processes but does not affect electrical performance. RC1608J115CS is supplied in Tape & Reel format. MCR03ERTJ115 is supplied in Cut Tape & Digi-Reel format. Both formats contain electrically identical components; packaging selection depends on assembly equipment and inventory management requirements.

Q: Why is ERJ-3EKF1104V marked as Obsolete? A: Obsolete status indicates the manufacturer has discontinued production. ERJ-3EKF1104V should not be selected for new product designs. Active alternatives such as RMCF0603FT1M10 or KTR03EZPF1104 provide equivalent or superior specifications with ongoing manufacturer support.

Q: Can I use RMCF0603JT1M10 instead of RMCF0603FT1M10? A: Both parts are manufactured by Stackpole Electronics Inc with identical 1.1 MOhms resistance, 0.1W power rating, 0603 package, and AEC-Q200 qualification. The difference is tolerance: RMCF0603JT1M10 is ±5% (matching the original RC1608J115CS), while RMCF0603FT1M10 is ±1%. Selection depends on circuit tolerance requirements. RMCF0603JT1M10 is the tolerance-matched alternative; RMCF0603FT1M10 provides tighter tolerance.

Q: What does Temperature Coefficient ±100ppm/°C mean? A: Temperature coefficient specifies how resistance changes with temperature. ±100ppm/°C means the resistance changes by a maximum of 100 parts per million per degree Celsius. RC1608J115CS and most substitute parts specify ±100ppm/°C. MCR03ERTJ115 and Stackpole parts specify ±200ppm/°C, indicating slightly greater temperature sensitivity. Both specifications are within acceptable ranges for standard applications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed (RC0603JR-071M1L, ERJ-3EKF1104V, KTR03EZPF1104, MCR03ERTJ115, RMCF0603FT1M10, RMCF0603JT1M10) are ROHS3 compliant and maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the original RC1608J115CS specifications.

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