MC22FF181D-F Equivalent & Substitute Parts

Part Overview

The MC22FF181D-F is a 180 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 1 kV operation in a 2220 (5750 Metric) surface mount package. This component is designed for RF applications requiring high Q and low loss characteristics. The part is currently Active in product status with 713 units in stock. Mica capacitors of this specification are used in RF circuits, tuning networks, and high-frequency applications where stability and low dielectric loss are critical. Alternative models may be required due to inventory constraints, specific tolerance requirements, or application-specific performance needs.

Substiute Parts

MC22FF181D-F

Cornell Dubilier Electronics (CDE)In Stock: 784MC22FF181D-F Datasheet

Current PartRFQ

MC22FF181J-F

Cornell Dubilier Electronics (CDE)In Stock: 1014MC22FF181J-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MC22FF181D-F is determined by strict adherence to the following parameters:

Critical Parameters (Must Match):

• Capacitance value: 180 pF
• Package / Case: 2220 (5750 Metric)
• Mounting Type: Surface Mount
• Dielectric Material: Mica
• Voltage Rating: 1 kV (minimum)

Allowable Variation:

• Tolerance: The main part specifies ±0.5%. Substitute parts with wider tolerances (such as ±5%) are acceptable only when circuit design permits relaxed capacitance accuracy. Tolerance is the primary differentiator among equivalent mica capacitors with identical capacitance and voltage ratings.

Compliance Parameters (Must Maintain):

• RoHS3 Compliance
• Operating Temperature Range: -55°C ~ 125°C
• Features: RF, High Q, Low Loss characteristics

The MC22FF181J-F qualifies as a substitute because it maintains all critical parameters while differing only in tolerance specification (±5% versus ±0.5%).

Parameter Comparison

Engineering Selection Recommendations

Selection Criteria Based on Provided Data:

1. Tolerance Requirement Analysis:

   • Use MC22FF181D-F (±0.5% tolerance) when circuit design requires tight capacitance accuracy, such as in precision RF tuning networks, frequency-critical filters, or impedance matching circuits where capacitance drift directly affects performance.
   • Use MC22FF181J-F (±5% tolerance) when circuit design accommodates wider capacitance variation, such as in general-purpose RF coupling, bypass applications, or circuits with automatic tuning compensation.

2. Inventory and Availability:

   • MC22FF181D-F: 713 units in stock
   • MC22FF181J-F: 918 units in stock
   • Selection may be influenced by project timeline and quantity requirements.

3. Compliance Verification:

   • Both parts maintain ROHS3 compliance and REACH unaffected status, suitable for applications subject to environmental regulations.
   • Both parts carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

4. Thermal and Operational Compatibility:

   • Both parts operate across -55°C ~ 125°C, ensuring compatibility with standard industrial and commercial temperature environments.

5. Physical and Electrical Compatibility:

   • Identical package dimensions (2220 / 5750 Metric) and mounting type (Surface Mount) ensure direct PCB footprint compatibility.
   • Identical electrical features (RF, High Q, Low Loss) confirm functional equivalence for RF circuit applications.

Frequently Asked Questions (FAQ)

Q1: Can MC22FF181J-F replace MC22FF181D-F in all applications?

A: MC22FF181J-F can replace MC22FF181D-F only when the circuit design tolerates ±5% capacitance variation. Applications requiring ±0.5% accuracy must use MC22FF181D-F. Verify circuit tolerance specifications before substitution.

Q2: What is the primary difference between these two parts?

A: The primary difference is tolerance specification. MC22FF181D-F provides ±0.5% tolerance, while MC22FF181J-F provides ±5% tolerance. All other electrical and mechanical parameters are identical.

Q3: Are the physical dimensions identical?

A: Yes. Both parts use the 2220 (5750 Metric) package with dimensions of 0.224" L x 0.197" W (5.70mm x 5.00mm) and maximum seated height of 0.157" (4.00mm). Direct PCB footprint compatibility is confirmed.

Q4: Do both parts meet RoHS and REACH requirements?

A: Yes. Both MC22FF181D-F and MC22FF181J-F are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q5: What is the operating temperature range for both parts?

A: Both parts operate across -55°C ~ 125°C, providing identical thermal performance across standard industrial and commercial temperature environments.

Q6: Are there any moisture sensitivity concerns?

A: No. Both parts carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity constraints. Standard storage and handling procedures apply.

Q7: Which part should be selected for RF tuning circuits?

A: For RF tuning circuits requiring precise frequency control, MC22FF181D-F (±0.5% tolerance) is the appropriate selection. For general RF coupling or bypass applications where tolerance is less critical, MC22FF181J-F is acceptable.

Q8: Can these parts be used interchangeably on the same PCB assembly?

A: Physical and electrical interchangeability is confirmed. However, circuit performance impact depends on tolerance requirements. Verify design specifications before implementing substitution on production assemblies.