Equivalent & Substitute Parts for T356B335K025AS

Part Overview

The T356B335K025AS is a 3.3 µF conformal coated tantalum capacitor manufactured by KEMET, rated for 25 V operation in a radial through-hole package. This component belongs to the T356 UltraDip II series and is designed for general-purpose applications requiring reliable energy storage in compact form factors.

The T356B335K025AS is classified as an active product. Substitute parts may be required due to inventory availability, compliance requirements, or specific application constraints such as RoHS certification needs.

Substiute Parts

T356B335K025AS

KEMETIn Stock: 919T356B335K025AS Datasheet

Current PartRFQ

T356B335K025AT

KEMETIn Stock: 2054T356B335K025AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T356B335K025AS is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 3.3 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating: 25 V (exact match required)
• Dielectric Type: Conformal Coated Tantalum (exact match required)
• ESR: 5 Ohm (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Mounting Type: Through Hole Radial (exact match required)
• Package Dimensions: 0.177" Dia (4.50mm), Height 0.350" (8.90mm), Lead Spacing 0.200" (5.08mm) (exact match required)
• Manufacturer Size Code: B (exact match required)

The substitute part T356B335K025AT maintains identical electrical and mechanical specifications to the main part, with the distinction of RoHS3 compliance status.

Parameter Comparison

Engineering Selection Recommendations

T356B335K025AS is suitable for applications where RoHS non-compliance is acceptable or where legacy component specifications are required. Current inventory status shows 876 pieces available.

T356B335K025AT is the preferred substitute when RoHS3 compliance is mandated by design requirements, regulatory frameworks, or customer specifications. This part maintains full electrical and mechanical equivalence while meeting modern environmental compliance standards. Current inventory status shows 1986 pieces available, providing greater supply assurance.

Both parts are active products from KEMET's T356 UltraDip II series and are classified under ECCN EAR99 with HTSUS code 8532.21.0040. Selection between these two parts should be based solely on compliance requirements and inventory availability.

Frequently Asked Questions (FAQ)

Q: Are T356B335K025AS and T356B335K025AT electrically identical?

A: Yes. Both parts have identical capacitance (3.3 µF), tolerance (±10%), voltage rating (25 V), ESR (5 Ohm), and operating temperature range (-55°C to 125°C). They are direct electrical equivalents.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical package dimensions: 0.177" diameter (4.50mm), maximum seated height of 0.350" (8.90mm), and lead spacing of 0.200" (5.08mm). They are mechanically interchangeable in through-hole PCB applications.

Q: What is the difference between these two parts?

A: The primary difference is RoHS compliance status. T356B335K025AS is RoHS non-compliant, while T356B335K025AT is ROHS3 compliant. All other specifications, including electrical performance and physical form factor, are identical.

Q: Which part should I select for a new design?

A: Selection depends on your compliance requirements. If RoHS3 compliance is required, use T356B335K025AT. If RoHS compliance is not a constraint, either part is functionally equivalent.

Q: Can I substitute T356B335K025AT for T356B335K025AS in existing designs?

A: Yes. T356B335K025AT is a direct substitute with identical electrical and mechanical specifications. No circuit redesign or PCB layout modification is required.

Q: Are there any performance differences between these parts?

A: No. Both parts have identical ESR, operating temperature range, and all other electrical characteristics. Performance in circuit operation is equivalent.

Q: What is the lead spacing for these radial capacitors?

A: The lead spacing is 0.200" (5.08mm) for both parts, consistent with standard through-hole PCB pad spacing for this component category.