Equivalent & Substitute Parts for F321A157MCC

Part Overview

The F321A157MCC is a 150 µF molded tantalum polymer capacitor rated at 10 V, manufactured by Nichicon in the 2312 (6032 Metric) package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part operates across a temperature range of -55°C to 105°C with an ESR of 55 mOhm at 100 kHz, serving general-purpose applications requiring stable capacitance and low equivalent series resistance.

Substiute Parts

F321A157MCC

NichiconIn Stock: 834F321A157MCC Datasheet

Current PartRFQ

T520C157M010ATE055

KEMETIn Stock: 8504T520C157M010ATE055 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the F321A157MCC is determined by strict equivalence across the following parameters:

• Capacitance value: 150 µF (±20% tolerance)
• Voltage rating: 10 V minimum
• Package / Case: 2312 (6032 Metric)
• ESR specification: 55 mOhm @ 100 kHz
• Type: Molded tantalum polymer
• Operating temperature range: -55°C to 105°C minimum
• Mounting type: Surface Mount

The substitute part T520C157M010ATE055 from KEMET meets all these electrical and mechanical criteria, enabling direct replacement in applications where the F321A157MCC was originally specified.

Parameter Comparison

Engineering Selection Recommendations

The T520C157M010ATE055 is the direct equivalent substitute for the F321A157MCC. The KEMET part carries active product status, ensuring long-term availability and supply chain stability compared to the obsolete Nichicon component. Both parts are REACH Unaffected and classified under ECCN EAR99, maintaining equivalent compliance posture.

The T520C157M010ATE055 is RoHS3 compliant and carries a Moisture Sensitivity Level (MSL) rating of 3 (168 Hours), compared to the F321A157MCC's MSL 1. The seated height difference of 0.004" (0.10 mm) is negligible for most PCB layout applications and does not affect functional performance or mechanical fit in standard 2312 package footprints.

Frequently Asked Questions (FAQ)

Q: Can the T520C157M010ATE055 be used as a direct replacement for the F321A157MCC?

A: Yes. Both parts share identical electrical specifications (150 µF, 10 V, 55 mOhm ESR) and the same 2312 (6032 Metric) package footprint. The minimal height difference (0.004") does not impact PCB assembly or performance.

Q: What is the significance of the product status difference?

A: The F321A157MCC is obsolete, meaning Nichicon no longer manufactures or supports this part. The T520C157M010ATE055 is active, ensuring continued availability, technical support, and supply chain reliability for new designs and ongoing production.

Q: Are there compliance differences between these parts?

A: Both parts are REACH Unaffected and carry the same ECCN (EAR99) and HTSUS classifications. The T520C157M010ATE055 is RoHS3 compliant. The MSL rating differs (1 vs. 3), but both are suitable for standard PCB assembly processes.

Q: Does the ESR specification remain identical?

A: Yes. Both parts specify 55 mOhm @ 100 kHz, ensuring equivalent performance in filtering, decoupling, and energy storage applications.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: Yes. Both parts use the 2312 (6032 Metric) package with identical length (0.236") and width (0.126"). The seated height difference of 0.004" (0.10 mm) is within standard PCB assembly tolerances and does not require layout modifications.