RP104PJ181CS Equivalent & Substitute Parts

Part Overview

The RP104PJ181CS is a 4-resistor isolated network array manufactured by Samsung Electro-Mechanics. This surface-mount component features 180 Ohm resistors with ±5% tolerance and 62.5mW power per element rating. The part is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and package configurations are required for design flexibility, supply chain continuity, or inventory optimization.

Key Parameters

Parameter	Value
Resistance (Ohms)	180
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
Package / Case	0804, Convex, Long Side Terminals
Mounting Type	Surface Mount
Size / Dimension	0.079" L x 0.039" W (2.00mm x 1.00mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RP104PJ181CS is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Resistance value: 180 Ohms (exact match)
Tolerance: ±5% (exact match)
Circuit type: Isolated (exact match)
Power per element: 62.5mW (exact match)
Temperature coefficient: ±200ppm/°C (exact match)
Operating temperature range: -55°C ~ 155°C (exact match)
Number of resistors: 4 (exact match)
Number of pins: 8 (exact match)

Mechanical Equivalence Requirements:

Package / Case: 0804, Convex, Long Side Terminals (exact match)
Mounting type: Surface Mount (exact match)
Physical dimensions: 0.079" L x 0.039" W (2.00mm x 1.00mm) (exact match)

Compliance Requirements:

RoHS3 Compliant status
Moisture Sensitivity Level 1 (Unlimited)

The substitute part YC124-JR-07180RL meets all electrical and mechanical equivalence criteria and maintains required compliance certifications.

Parameter Comparison

Parameter	RP104PJ181CS (Samsung)	YC124-JR-07180RL (YAGEO)	Match Status
Resistance (Ohms)	180	180	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
Package / Case	0804, Convex, Long Side Terminals	0804, Convex, Long Side Terminals	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Size / Dimension	0.079" L x 0.039" W (2.00mm x 1.00mm)	0.079" L x 0.039" W (2.00mm x 1.00mm)	Equivalent
Height - Seated (Max)	0.018" (0.45mm)	0.022" (0.55mm)	Within tolerance
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Both RP104PJ181CS and YC124-JR-07180RL are Active product status components with full RoHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts is based on availability, packaging format, and supply chain requirements rather than electrical or mechanical performance differences.

The RP104PJ181CS is supplied by Samsung Electro-Mechanics with 936 pieces in current inventory. The YC124-JR-07180RL is supplied by YAGEO with 21,049 pieces in current inventory and is available in Tape & Reel (TR) packaging format. Both components are suitable for applications requiring isolated 4-resistor networks in the 0804 surface-mount package configuration.

The maximum seated height difference of 0.004" (0.10mm) between the two parts is within standard PCB assembly tolerances and does not affect functional performance or board-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can YC124-JR-07180RL be used as a direct replacement for RP104PJ181CS in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters: 180 Ohm resistance, ±5% tolerance, 62.5mW power per element, ±200ppm/°C temperature coefficient, -55°C to 155°C operating range, 4-resistor isolated configuration, 8-pin count, and 0804 surface-mount package with convex long-side terminals. Both maintain RoHS3 compliance and MSL 1 rating.

Q: What is the significance of the height difference between these parts?

A: The RP104PJ181CS has a maximum seated height of 0.018" (0.45mm), while the YC124-JR-07180RL has a maximum seated height of 0.022" (0.55mm). This 0.004" (0.10mm) difference is within standard PCB assembly process tolerances and does not impact board-level clearance or component functionality.

Q: Are there packaging differences between these substitute parts?

A: The RP104PJ181CS is supplied in standard packaging format. The YC124-JR-07180RL is available in Tape & Reel (TR) format, which is suitable for automated assembly processes. Both parts use identical component-level packaging (0804 surface-mount package).

Q: Do both parts support automotive applications?

A: The YC124-JR-07180RL is specified for Automotive AEC-Q200, DDRAM, and SDRAM applications. The RP104PJ181CS does not list specific applications in the provided specifications. Both parts meet the same electrical and environmental operating requirements.

Q: What compliance certifications apply to both parts?

A: Both RP104PJ181CS and YC124-JR-07180RL are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry MSL 1 (Unlimited) moisture sensitivity rating.

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