08055K4R7BAWTR Equivalent & Substitute Parts

Part Overview

The 08055K4R7BAWTR is a 4.7 pF thin film capacitor rated at 50 V in 0805 (2012 Metric) surface mount package, manufactured by KYOCERA AVX under the Accu-F® series. This component is designed for RF applications requiring high Q and low loss characteristics. The part is currently obsolete, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

08055K4R7BAWTR

KYOCERA AVXIn Stock: 73608055K4R7BAWTR Datasheet

Current PartRFQ

08055J4R7BBTTR

KYOCERA AVXIn Stock: 99208055J4R7BBTTR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 08055K4R7BAWTR is based on strict electrical and mechanical parameter matching:

Critical Matching Parameters:

• Capacitance value: 4.7 pF (exact match required)
• Tolerance: ±0.1 pF (exact match required)
• Voltage rating: 50 V (minimum acceptable)
• Package: 0805 (2012 Metric) surface mount (exact match required)
• Operating temperature range: -55°C to 125°C (minimum acceptable)
• Dielectric type: Thin film (RF, High Q, Low Loss characteristics)

The substitute part 08055J4R7BBTTR meets all critical electrical parameters and mechanical form factor requirements. Both parts are manufactured by KYOCERA AVX, utilize identical capacitance and tolerance specifications, and are rated for the same voltage and temperature operating range. The primary difference is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The 08055J4R7BBTTR is the direct functional equivalent for the obsolete 08055K4R7BAWTR. Selection of the substitute part is supported by the following factors:

Electrical Equivalence: Both parts maintain identical capacitance (4.7 pF), tolerance (±0.1 pF), voltage rating (50 V), and operating temperature range (-55°C to 125°C). RF performance characteristics (High Q, Low Loss) are preserved.

Mechanical Compatibility: Both components utilize the 0805 (2012 Metric) surface mount package with identical footprint dimensions (0.079" L × 0.050" W / 2.00 mm × 1.27 mm). The seated height difference (0.029" vs. 0.044") is within typical PCB assembly tolerances and does not affect electrical performance or board-level compatibility.

Compliance Status: The substitute part is ROHS3 compliant and carries active product status, ensuring long-term availability and supply chain continuity. The original part is RoHS non-compliant and obsolete.

Packaging Consideration: The substitute is supplied in Tape & Reel (TR) format, standard for production environments, whereas the original was supplied in bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can 08055J4R7BBTTR be used as a direct replacement for 08055K4R7BAWTR in RF circuits?

A: Yes. Both parts are thin film capacitors with identical electrical specifications (4.7 pF, ±0.1 pF tolerance, 50 V rating) and RF performance characteristics (High Q, Low Loss). The 0805 package footprint is identical, ensuring PCB-level compatibility.

Q: What is the significance of the height difference between these parts?

A: The seated height difference (0.029" vs. 0.044") reflects different internal construction within the same 0805 package envelope. This difference does not affect electrical performance, PCB assembly compatibility, or circuit functionality. Standard PCB assembly processes accommodate this variation.

Q: Why is RoHS3 compliance important for this substitution?

A: RoHS3 compliance ensures the substitute part meets current environmental and regulatory standards for electronic components. The original part's non-compliance status, combined with its obsolete status, makes the compliant substitute the appropriate choice for new designs and ongoing production.

Q: Are there any circuit performance differences between the Accu-F® and Accu-P® series?

A: Both series are thin film capacitors with RF, High Q, and Low Loss characteristics. The electrical and thermal performance parameters provided are identical. Series designation reflects internal manufacturing process differences that do not affect circuit-level performance for this application.

Q: Is the Tape & Reel packaging compatible with standard pick-and-place assembly equipment?

A: Yes. Tape & Reel (TR) packaging is the standard format for automated surface mount assembly. It is compatible with all modern pick-and-place equipment and provides superior handling and traceability compared to bulk packaging.