SPSX151M04R-7 Equivalent & Substitute Parts

Part Overview

The SPSX151M04R-7 is a 150 µF, 4 V aluminum polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications. The part delivers 7 mOhm equivalent series resistance with a 1000-hour lifetime rating at 105°C, suitable for general-purpose applications requiring low ESR performance in compact form factors.

Substiute Parts

SPSX151M04R-7

Cornell Dubilier Electronics (CDE)In Stock: 776SPSX151M04R-7 Datasheet

Current PartRFQ

EEF-SX0G151E7

Panasonic Electronic ComponentsIn Stock: 3312EEF-SX0G151E7 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPSX151M04R-7 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 150 µF (exact match required)
• Voltage Rating: 4 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package: 2917 (7343 Metric) (exact match required)
• Type: Aluminum Polymer (exact match required)
• Mounting Type: Surface Mount (exact match required)

Compatible Variation Parameters:

• ESR: 7 mOhm or lower (lower values are acceptable)
• Lifetime @ 105°C: 1000 hours or greater (higher values are acceptable)
• Operating Temperature Range: Must encompass or exceed -40°C to 105°C
• RoHS Status: ROHS3 Compliant (required for regulatory compliance)

The EEF-SX0G151E7 manufactured by Panasonic Electronic Components meets all mandatory matching criteria and demonstrates superior performance in acceptable variation parameters, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The EEF-SX0G151E7 is the qualified substitute for the obsolete SPSX151M04R-7. Selection is based on the following engineering criteria:

Regulatory Compliance: Both components maintain ROHS3 compliance, ensuring compatibility with current environmental and safety standards.

Product Availability: The SPSX151M04R-7 is obsolete with no ongoing manufacturing. The EEF-SX0G151E7 is in active production with 3238 units available in inventory, providing supply chain continuity.

Electrical Equivalence: All mandatory electrical parameters match exactly. The substitute demonstrates superior performance in non-critical parameters: extended lifetime (2000 hours versus 1000 hours at 105°C), expanded operating temperature range (-55°C to 105°C versus -40°C to 105°C), and doubled ripple current capacity (7 A versus 3.5 A at 100 kHz).

Physical Compatibility: Identical package designation (2917/7343 Metric) and surface mount configuration ensure direct PCB compatibility without layout modifications.

Packaging Format: The substitute is supplied in Tape & Reel format, standard for automated assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0G151E7 be used as a direct replacement for SPSX151M04R-7 without circuit modifications?

A: Yes. Both components share identical electrical specifications (150 µF, 4 V, ±20%, 7 mOhm ESR) and physical package (2917/7343 Metric). No circuit design changes are required. The substitute is pin-compatible and functionally equivalent.

Q: What is the significance of the extended lifetime rating (2000 hours versus 1000 hours) on the substitute part?

A: The EEF-SX0G151E7 provides double the operational lifetime at 105°C. This represents improved reliability and extended service life under thermal stress conditions. For applications operating near maximum temperature ratings, this enhancement reduces failure risk over the product lifecycle.

Q: Are there any compliance or certification differences between the two parts?

A: Both components are ROHS3 compliant. The substitute carries additional REACH Unaffected status. No compliance barriers exist for substitution in regulated applications.

Q: Does the higher ripple current rating (7 A versus 3.5 A) affect circuit performance?

A: The ripple current rating indicates the maximum AC current the capacitor can safely handle at 100 kHz without exceeding temperature limits. The substitute's higher rating provides additional design margin and thermal headroom. Existing circuits designed for the original part will operate within safe limits with the substitute.

Q: What packaging considerations apply when transitioning from SPSX151M04R-7 to EEF-SX0G151E7?

A: The original part was supplied in standard packaging. The substitute is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. Tape & Reel packaging is compatible with automated pick-and-place equipment and offers no functional differences in the final assembled product.

Q: Is the operating temperature range difference (-40°C to 105°C versus -55°C to 105°C) significant?

A: The substitute supports a wider operating range, extending to -55°C at the lower end. This provides additional design flexibility for applications requiring operation in cold environments. Existing designs operating within -40°C to 105°C will function identically with either component.