RP104PJ512CS Equivalent & Substitute Parts

Part Overview

The RP104PJ512CS is a 4-resistor isolated network array manufactured by Samsung Electro-Mechanics. This surface-mount component features 5.1kΩ 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 and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Key Parameters

Parameter	Value
Resistance	5.1kΩ
Tolerance	±5%
Number of Resistors	4
Power Per Element	62.5mW
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C to 155°C
Circuit Type	Isolated
Number of Pins	8
Package / Case	0804, Convex, Long Side Terminals
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RP104PJ512CS is permissible when the following criteria are met:

Electrical Parameters (Must Match Exactly):

Resistance value: 5.1kΩ
Tolerance: ±5%
Number of resistors: 4
Power per element: 62.5mW
Temperature coefficient: ±200ppm/°C
Operating temperature range: -55°C to 155°C
Circuit type: Isolated

Mechanical Parameters (Must Match Exactly):

Package / Case: 0804, Convex, Long Side Terminals
Number of pins: 8
Mounting type: Surface Mount

Compliance Parameters (Must Match or Exceed):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

The YC124-JR-075K1L from YAGEO meets all electrical and mechanical requirements for direct substitution with the RP104PJ512CS.

Parameter Comparison

Parameter	RP104PJ512CS (Samsung)	YC124-JR-075K1L (YAGEO)
Resistance (Ohms)	5.1k	5.1k
Tolerance	±5%	±5%
Number of Resistors	4	4
Power Per Element	62.5mW	62.5mW
Temperature Coefficient	±200ppm/°C	±200ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C
Circuit Type	Isolated	Isolated
Number of Pins	8	8
Package / Case	0804, Convex, Long Side Terminals	0804, Convex, Long Side Terminals
Mounting Type	Surface Mount	Surface Mount
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)
Height - Seated (Max)	0.018" (0.45mm)	0.022" (0.55mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
Product Status	Active	Active

Engineering Selection Recommendations

Both the RP104PJ512CS and YC124-JR-075K1L are Active product status components with identical electrical specifications and mechanical compatibility. Selection between these parts is based on the following factors:

Compliance & Certification: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements.

Physical Dimensions: The YC124-JR-075K1L has a maximum seated height of 0.022" (0.55mm) compared to the RP104PJ512CS at 0.018" (0.45mm). This 0.004" (0.10mm) difference is within typical PCB assembly tolerances and does not affect functional compatibility in standard surface-mount applications.

Inventory & Availability: The YC124-JR-075K1L is available in higher quantity (10,643 pcs) compared to RP104PJ512CS (993 pcs), making it suitable for high-volume production requirements.

Packaging: The RP104PJ512CS is supplied in standard packaging, while the YC124-JR-075K1L is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the YC124-JR-075K1L replace the RP104PJ512CS in existing designs?

A: Yes. The YC124-JR-075K1L meets all electrical and mechanical specifications required for direct substitution. Both parts feature identical resistance values (5.1kΩ), tolerance (±5%), power rating (62.5mW per element), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C to 155°C). The package type, pin count, and mounting method are identical.

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

A: The RP104PJ512CS has a maximum seated height of 0.018" (0.45mm), while the YC124-JR-075K1L is 0.022" (0.55mm). This 0.004" (0.10mm) difference is negligible for standard PCB assembly and does not affect electrical performance or mechanical fit in typical applications.

Q: Are both parts suitable for automotive applications?

A: The YC124-JR-075K1L is specified for Automotive AEC-Q200 applications. The RP104PJ512CS does not list automotive applications in the provided specifications. If automotive qualification is required, the YC124-JR-075K1L is the appropriate selection.

Q: What is the difference between the packaging formats?

A: The RP104PJ512CS is supplied in standard packaging, while the YC124-JR-075K1L is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated pick-and-place assembly processes and is standard for high-volume manufacturing.

Q: Do both parts require special moisture handling?

A: No. Both parts are classified as Moisture Sensitivity Level 1 (Unlimited), indicating they do not require special moisture control or baking procedures prior to soldering.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both maintain identical regulatory status.

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