RN104PJ300CS Equivalent & Substitute Parts

Part Overview

The RN104PJ300CS is a 4-resistor isolated network array manufactured by Samsung Electro-Mechanics, featuring 30 Ohm resistance elements with ±5% tolerance and 62.5mW power per element rating. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part is designed for surface mount applications in 0804 package configuration with isolated circuit topology.

Key Parameters

Parameter	Value
Resistance (Ohms)	30
Tolerance	±5%
Number of Resistors	4
Circuit Type	Isolated
Power Per Element	62.5mW
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Number of Pins	8
Mounting Type	Surface Mount
Package / Case	0804
Size / Dimension	0.079" L x 0.039" W (2.00mm x 1.00mm)
Height - Seated (Max)	0.020" (0.50mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RN104PJ300CS is determined by strict equivalence across the following critical parameters:

Resistance Value: 30 Ohms (exact match required)
Tolerance: ±5% (exact match required)
Number of Resistors: 4 elements (exact match required)
Circuit Type: Isolated topology (exact match required)
Power Per Element: 62.5mW (exact match required)
Temperature Coefficient: ±200ppm/°C (exact match required)
Operating Temperature Range: -55°C ~ 155°C (exact match required)
Number of Pins: 8 (exact match required)
Mounting Type: Surface Mount (exact match required)
Package Footprint: 0804 (exact match required)
Physical Dimensions: 2.00mm x 1.00mm (exact match required)
Compliance: ROHS3 Compliant, MSL 1 (exact match required)

The MNR04MRAPJ300 from Rohm Semiconductor meets all substitution criteria. Minor mechanical variation exists in terminal configuration (Convex vs. Concave), which does not affect electrical performance or PCB assembly compatibility within standard manufacturing tolerances.

Parameter Comparison

Parameter	RN104PJ300CS (Samsung)	MNR04MRAPJ300 (Rohm)	Match Status
Resistance (Ohms)	30	30	Equivalent
Tolerance	±5%	±5%	Equivalent
Number of Resistors	4	4	Equivalent
Circuit Type	Isolated	Isolated	Equivalent
Power Per Element	62.5mW	62.5mW	Equivalent
Temperature Coefficient	±200ppm/°C	±200ppm/°C	Equivalent
Operating Temperature Range	-55°C ~ 155°C	-55°C ~ 155°C	Equivalent
Number of Pins	8	8	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	0804, Concave, Long Side Terminals	0804, Convex, Long Side Terminals	Functionally Equivalent
Size / Dimension	2.00mm x 1.00mm	2.00mm x 1.00mm	Equivalent
Height - Seated (Max)	0.50mm	0.50mm	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

The MNR04MRAPJ300 is a direct functional equivalent to the RN104PJ300CS. Both components satisfy identical electrical specifications, thermal performance requirements, and regulatory compliance standards. The substitute part maintains ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

The primary distinction between the two parts is the terminal geometry variation (Concave vs. Convex configuration). This mechanical difference does not impact electrical performance, signal integrity, or PCB assembly feasibility. Standard surface mount assembly equipment accommodates both terminal styles within normal process windows.

The MNR04MRAPJ300 is currently available in higher inventory quantities (20,017 pieces) compared to the obsolete RN104PJ300CS (1,076 pieces), providing improved procurement reliability and lead time assurance for new designs and production requirements.

Frequently Asked Questions (FAQ)

Q: Can the MNR04MRAPJ300 be used as a direct replacement for the RN104PJ300CS in existing designs?

A: Yes. The MNR04MRAPJ300 meets all electrical, thermal, and mechanical specifications required for direct substitution. No circuit modifications or design changes are necessary.

Q: What is the significance of the terminal configuration difference (Concave vs. Convex)?

A: Terminal geometry variation is a mechanical characteristic that does not affect electrical performance. Both configurations are compatible with standard surface mount assembly processes and PCB pad designs for 0804 package footprints.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both the RN104PJ300CS and MNR04MRAPJ300 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the difference in packaging between the two parts?

A: The RN104PJ300CS is supplied in standard packaging, while the MNR04MRAPJ300 is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly operations and does not affect component performance.

Q: Are the thermal and operating characteristics identical?

A: Yes. Both parts operate across the identical temperature range (-55°C ~ 155°C) with matching temperature coefficient specifications (±200ppm/°C), ensuring equivalent thermal performance in all operating conditions.

Q: What is the moisture sensitivity rating for both parts?

A: Both components carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

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