ECH-S1122JZ Equivalent & Substitute Parts

Part Overview

The ECH-S1122JZ is a 1200 pF film capacitor rated for 100V DC operation, manufactured by Panasonic Electronic Components. This radial through-hole component utilizes polyphenylene sulfide (PPS) dielectric material and is designed for high-frequency and switching applications. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

ECH-S1122JZ

Panasonic Electronic ComponentsIn Stock: 1062ECH-S1122JZ Datasheet

Current PartRFQ

QYX2A122JTP

NichiconIn Stock: 1783QYX2A122JTP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECH-S1122JZ is determined by the following critical parameters:

• Capacitance Value: 1200 pF (exact match required)
• Voltage Rating: 100V DC minimum
• Tolerance: ±5% (acceptable range for general-purpose and high-frequency applications)
• Mounting Configuration: Through-hole radial package with PC pin termination
• Physical Compatibility: Lead spacing and overall dimensions must accommodate existing PCB layouts

The QYX2A122JTP from Nichicon meets these core electrical requirements. While the dielectric material differs (polyester versus polyphenylene sulfide), both materials satisfy the capacitance, voltage, and tolerance specifications for this application category. Physical dimensions vary slightly; verification of PCB footprint compatibility is necessary prior to implementation.

Parameter Comparison

Engineering Selection Recommendations

The QYX2A122JTP qualifies as a functional substitute based on matching capacitance, tolerance, and voltage rating specifications. The substitute part carries active product status and ROHS3 compliance certification, supporting long-term availability and regulatory alignment.

Two design considerations apply:

Temperature Range Limitation: The substitute operates to 85°C maximum, compared to 125°C for the original part. Applications requiring sustained operation above 85°C require alternative sourcing.

Physical Footprint Variance: Lead spacing differs (4.60mm versus 5.00mm) and seated height increases (12.00mm versus 8.00mm). PCB layout compatibility must be confirmed before component selection.

Frequently Asked Questions (FAQ)

Q: Can the QYX2A122JTP replace the ECH-S1122JZ in all applications?

A: Electrical substitution is valid for applications operating within -40°C to 85°C. Applications requiring the full -40°C to 125°C range of the original part require alternative components. Physical PCB layout must accommodate the different lead spacing and height dimensions.

Q: What is the significance of the dielectric material difference?

A: Both polyphenylene sulfide and polyester dielectrics meet the specified capacitance, voltage, and tolerance requirements for this component category. The dielectric change does not affect electrical performance within the stated parameters.

Q: Are there compliance differences between the two parts?

A: The QYX2A122JTP carries ROHS3 and REACH certifications. Compliance requirements for the original ECH-S1122JZ were not specified in available documentation. Confirm regulatory requirements for your application before selection.

Q: What is the impact of different lead spacing on PCB design?

A: The substitute part uses 4.60mm lead spacing versus 5.00mm for the original. Existing PCB footprints designed for 5.00mm spacing will not accommodate the substitute without layout modification. New designs should specify the substitute part number to ensure correct footprint implementation.

Q: Is the substitute part currently available?

A: The QYX2A122JTP carries active product status with documented inventory availability, supporting immediate procurement and long-term supply chain continuity.