UP025SL1R8D-B-BZ Equivalent & Substitute Parts

Part Overview

The UP025SL1R8D-B-BZ is a 1.8 pF ceramic capacitor manufactured by Taiyo Yuden, rated for 50V operation with SL temperature coefficient characteristics. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part features axial through-hole mounting with straight leads, suitable for general-purpose applications requiring low-capacitance filtering and tuning circuits.

Substiute Parts

UP025SL1R8D-B-BZ

Taiyo YudenIn Stock: 764UP025SL1R8D-B-BZ Datasheet

Current PartRFQ

SA102A1R8DAA

KYOCERA AVXIn Stock: 937SA102A1R8DAA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the UP025SL1R8D-B-BZ is determined by the following critical parameters:

Mandatory Matching Criteria:

• Capacitance value: 1.8 pF
• Tolerance: ±0.5pF
• Mounting type: Through Hole
• Package type: Axial
• Lead style: Straight

Allowable Parameter Variations:

• Voltage rating may exceed the original 50V specification, provided the substitute maintains electrical compatibility within the circuit design envelope
• Temperature coefficient may differ (SL vs. C0G/NP0), as long as the substitute operates within the specified temperature range
• Operating temperature range may be broader than the original specification
• Physical dimensions may vary within the constraints of through-hole axial mounting

The SA102A1R8DAA from KYOCERA AVX meets all mandatory matching criteria while offering enhanced voltage rating and temperature stability characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SA102A1R8DAA represents a direct functional substitute for the obsolete UP025SL1R8D-B-BZ based on the following engineering criteria:

Electrical Compatibility: Both components provide identical capacitance (1.8 pF) and tolerance (±0.5pF) specifications. The SA102A1R8DAA's 200V voltage rating exceeds the original 50V requirement, providing additional design margin without compromising circuit performance.

Temperature Performance: The SA102A1R8DAA operates across an extended temperature range (-55°C ~ 125°C) compared to the original part (-25°C ~ 85°C), supporting broader application environments.

Product Status and Availability: The SA102A1R8DAA is classified as Active with 868 pieces in stock, ensuring procurement continuity. The original UP025SL1R8D-B-BZ is obsolete, with limited remaining inventory (667 pieces).

Compliance and Certifications: The SA102A1R8DAA is RoHS3 Compliant and REACH Unaffected, meeting current regulatory requirements. Both components carry EAR99 ECCN classification.

Physical Considerations: The SA102A1R8DAA exhibits larger physical dimensions (0.100" Dia x 0.170" L versus 0.079" Dia x 0.091" L). PCB layout verification is required to confirm fit within existing through-hole mounting patterns.

Frequently Asked Questions (FAQ)

Q: Can the SA102A1R8DAA directly replace the UP025SL1R8D-B-BZ in existing designs?

A: The SA102A1R8DAA provides electrical equivalence in capacitance, tolerance, and mounting configuration. Physical dimensions differ; PCB layout must accommodate the larger axial package (0.100" Dia x 0.170" L). Voltage and temperature coefficient differences present no functional incompatibility for general-purpose applications.

Q: What is the significance of the different temperature coefficients (SL vs. C0G/NP0)?

A: Temperature coefficient describes capacitance variation across operating temperature ranges. The SA102A1R8DAA's C0G/NP0 coefficient provides superior stability compared to SL, resulting in more predictable capacitance performance across temperature extremes. This represents an improvement for precision applications.

Q: Does the higher voltage rating (200V vs. 50V) affect circuit operation?

A: No. Higher voltage ratings indicate greater electrical stress tolerance. The SA102A1R8DAA operates safely at voltages up to 200V, providing additional design margin. Circuits designed for 50V operation function identically with the 200V-rated substitute.

Q: Are there physical space constraints with the SA102A1R8DAA?

A: The SA102A1R8DAA is physically larger than the original part. Verify that PCB through-hole spacing and component clearances accommodate the 0.100" diameter and 0.170" length dimensions. Lead spacing and mounting hole patterns must be confirmed for existing designs.

Q: What is the moisture sensitivity difference between these components?

A: The UP025SL1R8D-B-BZ carries MSL 1 (Unlimited), indicating no moisture sensitivity. The SA102A1R8DAA lists MSL as Not Applicable, reflecting its robust construction. Both components are suitable for standard storage and handling conditions.

Q: Is the SA102A1R8DAA available in sufficient quantity for production?

A: Yes. The SA102A1R8DAA is classified as Active with 868 pieces in current stock, ensuring reliable procurement for ongoing production requirements.