EEF-UD0J151LR Equivalent & Substitute Parts

Part Overview

The EEF-UD0J151LR is a 150 µF, 6.3 V aluminum polymer capacitor in 2917 (7343 Metric) surface mount package manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Capacitance	150 µF
Voltage Rating	6.3 V
Type	Aluminum Polymer
Package / Case	2917 (7343 Metric)
Mounting Type	Surface Mount
Tolerance	±20%
ESR (Equivalent Series Resistance)	9 mOhm
Lifetime @ Temperature	1000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Ripple Current @ 100 kHz	3.4 A
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution for the EEF-UD0J151LR is determined by strict equivalence in the following parameters:

Capacitance: 150 µF (exact match required)
Voltage Rating: 6.3 V (exact match required)
Package / Case: 2917 (7343 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
Tolerance: ±20% (exact match required)

Substitute parts may vary in ESR, lifetime rating, operating temperature range, and ripple current capacity while maintaining functional equivalence. All substitute parts listed maintain identical electrical specifications for capacitance, voltage, and tolerance, ensuring direct replacement capability in the same PCB footprint.

Parameter Comparison

Parameter	EEF-UD0J151LR	EEF-CX0J151R	EEF-CX0J151XR	EEF-SX0J151ER	ECASD60J157M010K00
Manufacturer	Panasonic	Panasonic	Panasonic	Panasonic	Murata Electronics
Capacitance	150 µF	150 µF	150 µF	150 µF	150 µF
Voltage Rating	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Package / Case	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)	2917 (7343 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
ESR (mOhm)	9	15	12	9	10
Lifetime @ 105°C	1000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs	1000 Hrs
Operating Temperature	-40°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-40°C ~ 105°C
Ripple Current @ 100 kHz	3.4 A	5.1 A	5.6 A	6.3 A	3 A
Product Status	Obsolete	Active	Active	Active	Obsolete
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For replacement of the obsolete EEF-UD0J151LR, the following active-status alternatives are recommended:

Primary Recommendation: EEF-CX0J151XR

This Panasonic part maintains identical electrical specifications while offering extended lifetime (2000 Hrs @ 105°C), improved ESR performance (12 mOhm), and expanded operating temperature range (-55°C ~ 105°C). ROHS3 compliance and active product status ensure long-term availability and supply chain stability.

Secondary Recommendation: EEF-SX0J151ER

This Panasonic part matches the original ESR specification (9 mOhm) while providing doubled lifetime rating (2000 Hrs @ 105°C) and extended temperature range (-55°C ~ 105°C). ROHS3 compliance and active status support sustained procurement.

Alternative: EEF-CX0J151R

This Panasonic part provides active status and extended lifetime (2000 Hrs @ 105°C) with expanded operating temperature range (-55°C ~ 105°C). Higher ESR (15 mOhm) may be acceptable in applications with lower ripple current requirements. ROHS3 compliant.

Not Recommended: ECASD60J157M010K00

Although functionally equivalent, this Murata part carries obsolete product status, limiting long-term procurement viability. Selection should be reserved for legacy system maintenance only.

Frequently Asked Questions (FAQ)

Q: Can EEF-CX0J151XR directly replace EEF-UD0J151LR on the PCB?

A: Yes. Both parts share identical package dimensions (2917 / 7343 Metric), surface mount land size (0.287" L x 0.169" W), and electrical specifications (150 µF, 6.3 V, ±20% tolerance). Direct PCB substitution is supported.

Q: What is the difference between the substitute parts?

A: All substitute parts maintain identical capacitance, voltage, tolerance, and package specifications. Differences exist in ESR (9–15 mOhm), lifetime rating (1000–2000 Hrs @ 105°C), operating temperature range (-40°C to -55°C minimum), and ripple current capacity (3–6.3 A @ 100 kHz). Selection depends on application requirements for thermal performance and ripple current handling.

Q: Why is EEF-SX0J151ER preferred over EEF-CX0J151R?

A: EEF-SX0J151ER matches the original ESR specification (9 mOhm) while providing superior lifetime (2000 Hrs @ 105°C). EEF-CX0J151R has higher ESR (15 mOhm), which may increase heat generation in high-ripple-current applications. Both are active products with ROHS3 compliance.

Q: Is ECASD60J157M010K00 a viable substitute?

A: ECASD60J157M010K00 is functionally equivalent but carries obsolete product status. It should be used only for legacy system maintenance where supply chain continuity is not a concern. For new designs or ongoing production, active-status Panasonic alternatives are preferred.

Q: What does MSL 3 (168 Hours) mean for handling?

A: Moisture Sensitivity Level 3 requires storage in controlled humidity conditions and limits the time the component can be exposed to ambient moisture before soldering. Components must be used within 168 hours of opening the moisture barrier bag, or they must be baked according to IPC standards before use.

Q: Are all substitute parts ROHS3 compliant?

A: The active-status substitutes (EEF-CX0J151R, EEF-CX0J151XR, EEF-SX0J151ER) are ROHS3 compliant. The original part (EEF-UD0J151LR) and the Murata alternative (ECASD60J157M010K00) do not specify ROHS3 status. For applications requiring ROHS3 compliance, select from the active Panasonic alternatives.

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