YC122-JR-073RL Equivalent & Substitute Parts

Part Overview

The YC122-JR-073RL is a 2-resistor isolated network array manufactured by YAGEO, featuring 3 Ohm resistance elements with ±5% tolerance. This surface mount component is designed for automotive applications including DDRAM and SDRAM circuits. The part is currently active in production with full AEC-Q200 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and qualification standards can be maintained across different manufacturer offerings.

Key Parameters

Parameter	Value
Resistance (Ohms)	3
Tolerance	±5%
Number of Resistors	2
Circuit Type	Isolated
Power Per Element	62.5mW
Number of Pins	4
Package / Case	0404 (1010 Metric), Convex
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 155°C
Grade	Automotive
Qualification	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the YC122-JR-073RL is determined by strict equivalence across the following critical parameters:

Resistance value: 3 Ohms
Tolerance: ±5%
Circuit configuration: Isolated 2-resistor network
Power rating per element: 62.5mW
Package type: 0404 (1010 Metric), Convex
Pin count: 4
Mounting technology: Surface Mount
Automotive qualification: AEC-Q200
Regulatory compliance: ROHS3

The EXB-24V3R0JX from Panasonic Electronic Components meets all substitution criteria. Both parts share identical resistance, tolerance, power rating, package dimensions, and automotive qualification status. Minor variations in temperature coefficient (±250ppm/°C vs ±200ppm/°C) and maximum operating temperature (-55°C ~ 155°C vs -55°C ~ 125°C) do not prevent substitution when the application operates within the more restrictive thermal envelope.

Parameter Comparison

Parameter	YC122-JR-073RL (YAGEO)	EXB-24V3R0JX (Panasonic)
Resistance (Ohms)	3	3
Tolerance	±5%	±5%
Number of Resistors	2	2
Circuit Type	Isolated	Isolated
Power Per Element	62.5mW	62.5mW
Number of Pins	4	4
Package / Case	0404 (1010 Metric), Convex	0404 (1010 Metric), Convex
Size / Dimension	0.039" L x 0.039" W (1.00mm x 1.00mm)	0.039" L x 0.039" W (1.00mm x 1.00mm)
Height - Seated (Max)	0.016" (0.40mm)	0.018" (0.45mm)
Temperature Coefficient	±250ppm/°C	±200ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount
Grade	Automotive	Automotive AEC-Q200
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the YC122-JR-073RL and EXB-24V3R0JX are active production components with full automotive qualification under AEC-Q200 standards. Selection between these parts should be based on:

Supply availability: The EXB-24V3R0JX maintains significantly higher inventory (60,978 pcs) compared to the YC122-JR-073RL (791 pcs), making it the preferred choice for high-volume production or extended lead-time mitigation.

Thermal operating range: The YC122-JR-073RL supports operation to 155°C, while the EXB-24V3R0JX is rated to 125°C. Applications requiring the extended upper temperature limit must use the YAGEO part.

Temperature stability: The EXB-24V3R0JX exhibits superior temperature coefficient performance (±200ppm/°C vs ±250ppm/°C), providing tighter resistance stability across the common operating range of -55°C to 125°C.

Physical height: The EXB-24V3R0JX has a maximum seated height of 0.018" (0.45mm) versus 0.016" (0.40mm) for the YC122-JR-073RL. This 0.05mm difference is negligible for standard PCB assembly but should be verified for space-constrained layouts.

Both parts carry ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard automotive manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the EXB-24V3R0JX replace the YC122-JR-073RL in all applications?

A: Yes, provided the application operates within the EXB-24V3R0JX thermal envelope (-55°C to 125°C). If your circuit requires operation above 125°C, the YC122-JR-073RL must be used.

Q: What is the significance of the temperature coefficient difference?

A: The EXB-24V3R0JX has a tighter temperature coefficient (±200ppm/°C) compared to the YC122-JR-073RL (±250ppm/°C). This means resistance values remain more stable across temperature variations. For precision applications, the Panasonic part offers superior performance.

Q: Are there any PCB layout considerations when switching between these parts?

A: The maximum seated height differs by 0.05mm (0.40mm vs 0.45mm). For standard automotive PCB designs, this is not a concern. However, verify clearance in space-constrained areas or designs with tight component stacking.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the YC122-JR-073RL and EXB-24V3R0JX carry AEC-Q200 automotive qualification and ROHS3 compliance, making them suitable for automotive DDRAM and SDRAM applications.

Q: Which part should I select for new designs?

A: Selection depends on specific requirements. For standard automotive applications within -55°C to 125°C, the EXB-24V3R0JX is recommended due to superior availability, tighter temperature coefficient, and active production status. For applications requiring extended temperature operation to 155°C, the YC122-JR-073RL is required.

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