HT08BW225KN Equivalent & Substitute Parts

Part Overview

The HT08BW225KN is a 2.2 µF ceramic capacitor rated at 50V with X7R temperature coefficient, manufactured by KEMET. This component is designed for general-purpose applications requiring high-temperature operation across the range of -55°C to 200°C. The part is classified as obsolete, necessitating identification of equivalent substitute components that maintain functional compatibility while ensuring continued availability and supply chain reliability.

Substiute Parts

HT08BW225KN

KEMETIn Stock: 1202HT08BW225KN Datasheet

Current PartRFQ

SR501C225KAR

KYOCERA AVXIn Stock: 1402SR501C225KAR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HT08BW225KN is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 2.2 µF
• Tolerance: ±10%
• Temperature Coefficient: X7R
• Mounting Type: Through Hole
• Package Type: Radial
• Lead Spacing: 0.400" (10.16mm)
• Lead Style: Straight

Allowable Variation Parameters:

• Voltage Rating: The substitute may exceed the original 50V rating, provided the higher voltage does not create incompatibility with the circuit design
• Operating Temperature Range: The substitute may have a narrower upper temperature limit than the original 200°C specification, depending on application requirements
• Physical dimensions: Minor variations in length and width are acceptable if lead spacing and mounting footprint remain consistent

The SR501C225KAR from KYOCERA AVX meets all mandatory matching parameters and qualifies as a direct substitute for the obsolete HT08BW225KN.

Parameter Comparison

Engineering Selection Recommendations

The SR501C225KAR is the qualified substitute for the obsolete HT08BW225KN based on the following factors:

Electrical Compatibility: Both components share identical capacitance (2.2 µF), tolerance (±10%), and temperature coefficient (X7R). The SR501C225KAR provides a higher voltage rating of 100V compared to the original 50V specification, which is acceptable for direct substitution in circuits designed for 50V operation.

Mechanical Compatibility: Lead spacing (0.400" / 10.16mm) and mounting footprint are identical between both parts. The SR501C225KAR exhibits a reduced width dimension (0.200" versus 0.270"), which presents no compatibility issues for through-hole PCB mounting.

Product Status and Compliance: The SR501C225KAR is classified as active product with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory alignment. The original HT08BW225KN is obsolete, making the SR501C225KAR the appropriate replacement for new designs and ongoing production.

Temperature Consideration: The SR501C225KAR operates across -55°C to 125°C, which is narrower than the original -55°C to 200°C range. Applications requiring sustained operation above 125°C must evaluate alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the SR501C225KAR directly replace the HT08BW225KN in existing designs?

A: Yes. The SR501C225KAR maintains identical capacitance, tolerance, temperature coefficient, lead spacing, and mounting type. The higher voltage rating (100V versus 50V) and reduced physical width present no functional incompatibility for circuits originally designed for the HT08BW225KN.

Q: What is the significance of the higher 100V rating on the SR501C225KAR?

A: The 100V rating on the substitute part exceeds the original 50V specification. This provides additional voltage margin and does not create incompatibility. The substitute will function correctly in circuits operating at or below 50V.

Q: Are there dimensional concerns with the SR501C225KAR?

A: The SR501C225KAR is narrower (0.200" versus 0.270") but maintains the same length (0.500"), height (0.500"), and critical lead spacing (0.400"). These dimensional changes do not affect PCB footprint compatibility or through-hole mounting.

Q: Does the narrower operating temperature range of the SR501C225KAR affect substitution?

A: The SR501C225KAR operates to 125°C maximum, compared to the original 200°C specification. For applications requiring sustained operation above 125°C, the SR501C225KAR is not suitable. Standard-temperature alternatives must be evaluated for such applications.

Q: What compliance certifications apply to the SR501C225KAR?

A: The SR501C225KAR is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: Is the SR501C225KAR available in the same packaging as the original?

A: The SR501C225KAR is supplied in bulk packaging, whereas the original HT08BW225KN packaging format is not specified in the available data. Confirm packaging requirements with your supplier for production planning purposes.