HT13BN681JN Equivalent & Substitute Parts

Part Overview

The HT13BN681JN is a 680 pF ceramic capacitor manufactured by KEMET, rated for 50V operation with C0G/NP0 temperature coefficient characteristics. This component is designed for general-purpose applications requiring stable capacitance across a wide temperature range (-55°C to 200°C). The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing procurement and design continuity.

Substiute Parts

HT13BN681JN

KEMETIn Stock: 795HT13BN681JN Datasheet

Current PartRFQ

SA101A681GAR

KYOCERA AVXIn Stock: 1265SA101A681GAR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the HT13BN681JN is based on the following critical parameters that must remain constant or improve:

Mandatory Matching Parameters:

• Capacitance value: 680 pF (exact match required)
• Temperature coefficient: C0G/NP0 (ensures stable capacitance across temperature variations)
• Mounting type: Through Hole (maintains PCB assembly compatibility)
• Package type: Axial (preserves physical form factor and lead configuration)
• Lead style: Straight (ensures proper insertion and soldering)

Allowable Parameter Variations:

• Voltage rating: Substitute parts may exceed the original 50V rating, provided the higher rating does not introduce incompatibilities with the circuit design
• Tolerance: Substitute parts with tighter tolerance (±2%) are acceptable as they provide equal or superior performance
• Operating temperature range: Substitute parts with reduced upper temperature limits are acceptable if the application does not require the full -55°C to 200°C range

The SA101A681GAR from KYOCERA AVX meets all mandatory matching criteria and provides enhanced electrical characteristics through higher voltage rating and improved tolerance specifications.

Parameter Comparison

Engineering Selection Recommendations

The SA101A681GAR is a direct functional substitute for the HT13BN681JN based on the following engineering criteria:

Electrical Compatibility: Both components provide identical capacitance values (680 pF) with C0G/NP0 temperature coefficient stability. The substitute part's 100V rating exceeds the original 50V specification, providing additional design margin and circuit protection. The improved tolerance specification (±2% versus ±5%) enhances circuit performance predictability.

Physical Compatibility: Both components utilize axial through-hole mounting with straight leads, ensuring compatibility with existing PCB layouts and assembly processes. The substitute part features a smaller physical envelope (0.100" Dia x 0.170" L versus 0.135" Dia x 0.260" L), which may provide layout advantages in space-constrained applications.

Product Status and Compliance: The SA101A681GAR is classified as active product status, ensuring long-term availability and supply chain continuity. The substitute part carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. The original HT13BN681JN is obsolete, making the substitute part the appropriate selection for new designs and ongoing production.

Temperature Consideration: The substitute part operates across -55°C to 125°C, which covers standard industrial and commercial temperature ranges. Applications requiring operation above 125°C must retain the original HT13BN681JN or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the SA101A681GAR replace the HT13BN681JN in all applications?

A: The SA101A681GAR is electrically and mechanically compatible with the HT13BN681JN for applications operating within the -55°C to 125°C temperature range. Applications requiring operation above 125°C require alternative component selection.

Q: What is the significance of the C0G/NP0 temperature coefficient designation?

A: C0G and NP0 designations indicate zero temperature coefficient ceramic capacitors, meaning capacitance remains stable across temperature variations. Both the original and substitute parts maintain this characteristic, ensuring consistent circuit performance.

Q: Does the smaller physical size of the SA101A681GAR affect circuit performance?

A: Physical size does not affect electrical performance. The smaller envelope of the substitute part (0.100" Dia x 0.170" L) provides identical electrical characteristics while potentially offering layout advantages. PCB footprint compatibility must be verified during design integration.

Q: Why is the substitute part rated for 100V when the original is rated for 50V?

A: Higher voltage ratings provide additional design margin and circuit protection without compromising performance at lower voltages. The 100V rating of the substitute part ensures safe operation in circuits designed for 50V operation.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the component meets current environmental and regulatory requirements for hazardous substance restrictions. This certification supports compliance with modern procurement and manufacturing standards.

Q: Are there any lead spacing or mounting considerations when substituting these parts?

A: Both components feature straight leads in axial configuration. Physical dimensions differ slightly, but both are compatible with standard through-hole PCB assembly processes. Verify PCB hole spacing and lead bend radius accommodate the substitute part's dimensions.