Z0201C121CSMST Ferrite Bead Equivalent & Substitute Parts

Part Overview

The Z0201C121CSMST is a 120 Ohm ferrite bead manufactured by KEMET, designed for single-line signal filtering applications in 0201 (0603 Metric) surface mount packages. This component operates at 100 MHz with a maximum DC resistance of 1.5 Ohm and supports operating temperatures from -55°C to 125°C. The part is classified as obsolete, necessitating identification of active equivalent components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

Z0201C121CSMST

KEMETIn Stock: 881Z0201C121CSMST Datasheet

Current PartRFQ

MMZ0603D121CT000

TDK CorporationIn Stock: 60509MMZ0603D121CT000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Z0201C121CSMST is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Impedance value of 120 Ohms at 100 MHz operating frequency
• Single signal line filter configuration
• DC resistance within acceptable tolerance (1.5 Ohm maximum specification)

Mechanical Equivalence Criteria:

• 0201 (0603 Metric) package form factor
• Surface mount mounting type
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Maximum height: 0.013" (0.33mm)

Compliance Equivalence Criteria:

• ROHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)
• REACH Unaffected status
• ECCN EAR99 classification

The substitute part MMZ0603D121CT000 meets all electrical, mechanical, and compliance requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The MMZ0603D121CT000 (TDK Corporation) is a direct functional equivalent to the Z0201C121CSMST. Both components share identical electrical specifications at the critical operating frequency of 100 MHz, matching impedance values of 120 Ohms. The mechanical compatibility is confirmed through identical package dimensions and form factors in the 0201 (0603 Metric) standard.

The TDK substitute offers the advantage of active product status, ensuring continued availability and supply chain reliability. The DC resistance of the substitute (1.4 Ohm) is lower than the original specification maximum (1.5 Ohm), representing an improvement in electrical performance. Both components maintain identical compliance certifications including ROHS3, REACH Unaffected status, and MSL 1 rating.

The primary distinction between the components is packaging format: the original part is supplied in Cut Tape (CT) & Digi-Reel format, while the substitute is supplied in Tape & Reel (TR) format. This difference does not affect electrical or mechanical compatibility and reflects standard industry packaging variations.

Frequently Asked Questions (FAQ)

Q: Can MMZ0603D121CT000 be used as a direct replacement for Z0201C121CSMST in existing designs?

A: Yes. Both components meet identical electrical specifications at 100 MHz (120 Ohms impedance), operate across the same temperature range (-55°C to 125°C), and share identical mechanical dimensions and package form factors. All compliance certifications are equivalent.

Q: What is the significance of the different DC resistance values (1.5 Ohm vs. 1.4 Ohm)?

A: The substitute part exhibits lower DC resistance, which represents improved electrical performance. The original specification allows up to 1.5 Ohm; the substitute at 1.4 Ohm operates within this tolerance and provides marginally better signal integrity.

Q: Does the packaging format difference (Cut Tape vs. Tape & Reel) affect compatibility?

A: No. Packaging format differences do not affect electrical or mechanical compatibility. The format distinction relates to supply chain and handling procedures only. Both formats contain identical components in the same 0201 (0603 Metric) package.

Q: Why is the original Z0201C121CSMST listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The MMZ0603D121CT000 substitute maintains active production status, ensuring long-term availability and supply chain continuity.

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

A: No. Both components carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected status, MSL 1 (Unlimited), ECCN EAR99, and HTSUS 8548.00.0000 classification.

Q: What is the current rating specification for the substitute part?

A: The MMZ0603D121CT000 is rated for a maximum current of 100 mA. The original Z0201C121CSMST does not specify a current rating in the provided documentation.

Q: Can these ferrite beads be used interchangeably in high-frequency signal line applications?

A: Yes. Both components are designed for single-line signal filtering and operate identically at the specified 100 MHz frequency with 120 Ohms impedance. They are suitable for equivalent applications in signal integrity and EMI suppression circuits.