HT55BN101JN Equivalent & Substitute Parts

Part Overview

The HT55BN101JN is a 100 pF ceramic capacitor manufactured by KEMET, rated for 50V operation with C0G/NP0 temperature coefficient and radial through-hole mounting. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates across an extended temperature range of -55°C to 200°C, making it suitable for high-temperature industrial applications.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	100 pF	Primary electrical specification; must match exactly
Tolerance	±5%	Defines acceptable capacitance variation; substitutes must meet or exceed
Voltage Rating	50V	Minimum voltage requirement; substitutes must equal or exceed
Temperature Coefficient	C0G/NP0	Stability classification; must match for temperature-sensitive applications
Operating Temperature Range	-55°C to 200°C	Defines thermal operating envelope; substitutes must support minimum range
Mounting Type	Through Hole	PCB assembly method; determines mechanical compatibility
Package Type	Radial	Physical form factor; affects board layout and lead configuration

Substitute Part Grouping Explanation

Substitution eligibility for the HT55BN101JN is determined by the following criteria:

Electrical Compatibility Requirements:

Capacitance value must equal 100 pF
Tolerance must be ±5% or tighter
Voltage rating must be ≥50V
Temperature coefficient must be C0G or NP0

Mechanical Compatibility Requirements:

Mounting type must be through-hole
Lead style must be straight
Physical dimensions must accommodate existing PCB footprints

Environmental & Compliance Requirements:

Operating temperature range must support the application's thermal requirements
RoHS and REACH compliance status must be documented

The identified substitute SA101A101JAR meets the electrical specifications (100 pF, ±5%, 100V rating, C0G/NP0) and through-hole mounting requirement. However, the package configuration differs (axial vs. radial), and the maximum operating temperature is reduced to 125°C, which may impact suitability for high-temperature applications.

Parameter Comparison

Parameter	HT55BN101JN (Main Part)	SA101A101JAR (Substitute)	Compatibility Notes
Manufacturer	KEMET	KYOCERA AVX	Different manufacturers; both established suppliers
Capacitance	100 pF	100 pF	Exact match
Tolerance	±5%	±5%	Exact match
Voltage Rating	50V	100V	Substitute exceeds requirement; acceptable
Temperature Coefficient	C0G/NP0	C0G/NP0	Exact match
Operating Temperature Range	-55°C to 200°C	-55°C to 125°C	Substitute has reduced upper limit; verify application requirement
Mounting Type	Through Hole	Through Hole	Exact match
Package Type	Radial	Axial	Different form factors; requires PCB layout modification
Lead Style	Straight	Straight	Exact match
Product Status	Obsolete	Active	Substitute is in active production

Engineering Selection Recommendations

Primary Consideration: Operating Temperature

The HT55BN101JN operates to 200°C, while the SA101A101JAR is limited to 125°C. Selection of the substitute is contingent upon the application's actual maximum operating temperature requirement. If the circuit operates below 125°C, the substitute is electrically and mechanically compatible with voltage and capacitance specifications.

Secondary Consideration: Package Form Factor

The main part uses radial configuration; the substitute uses axial configuration. This difference requires PCB footprint modification and may affect board layout density and lead routing. Axial packages typically occupy greater board length but may offer advantages in confined radial spaces.

Compliance Status

The substitute part (SA101A101JAR) carries active product status with documented RoHS3 compliance and REACH unaffected designation, providing supply chain continuity and regulatory compliance assurance.

Voltage Margin

The substitute's 100V rating provides a 2× safety margin over the 50V requirement, enhancing reliability in transient voltage conditions.

Frequently Asked Questions (FAQ)

Q: Can SA101A101JAR directly replace HT55BN101JN without PCB modification?

A: No. The radial package of HT55BN101JN differs from the axial package of SA101A101JAR. PCB footprint redesign is required. Lead spacing and mounting hole positions will differ.

Q: Is the reduced operating temperature range (125°C vs. 200°C) a limitation?

A: This depends on the application's actual thermal environment. If the circuit operates below 125°C, the substitute is suitable. If sustained operation above 125°C is required, the substitute is not appropriate.

Q: Are the electrical specifications identical?

A: Capacitance (100 pF) and tolerance (±5%) are identical. Temperature coefficient (C0G/NP0) is identical. Voltage rating differs: substitute is rated 100V versus 50V for the main part. The higher rating is acceptable for applications requiring 50V.

Q: What is the lead spacing difference between these parts?

A: HT55BN101JN has 0.200" (5.08mm) lead spacing in radial configuration. SA101A101JAR does not specify lead spacing in the provided data; axial packages typically have spacing determined by body length and lead wire diameter.

Q: Is the substitute in stock and available?

A: SA101A101JAR shows 1031 pcs in stock with active product status, providing immediate availability. HT55BN101JN is obsolete with 668 pcs remaining inventory.

Q: What compliance certifications apply to the substitute?

A: SA101A101JAR is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components in most markets.

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