T356F685K035AS Equivalent & Substitute Parts

Part Overview

The T356F685K035AS is a 6.8 µF conformal coated tantalum capacitor manufactured by KEMET, rated for 35 V operation in a radial through-hole package. This component belongs to the T356 UltraDip II series and is classified as active product status. Substitute parts are identified when electrical parameters, mechanical dimensions, and mounting characteristics remain within the allowed specifications for this product category, enabling direct replacement in circuit applications without design modification.

Substiute Parts

T356F685K035AS

KEMETIn Stock: 1159T356F685K035AS Datasheet

Current PartRFQ

T356F685K035AT

KEMETIn Stock: 1576T356F685K035AT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the T356F685K035AS is determined by strict equivalence across the following critical parameters:

• Electrical Specifications: Capacitance value (6.8 µF), tolerance (±10%), rated voltage (35 V), and ESR (2.5 Ohm) must be identical
• Physical Characteristics: Radial package configuration, diameter (0.236" / 6.00 mm), maximum seated height (0.441" / 11.20 mm), and lead spacing (0.200" / 5.08 mm) must match
• Coating & Type: Conformal coated tantalum construction required
• Temperature Performance: Operating range -55°C to 125°C must be maintained
• Mounting Configuration: Through-hole radial mounting only

The substitute part T356F685K035AT meets all electrical and mechanical parameters specified above, with the distinction of RoHS3 compliance status compared to the non-compliant main part.

Parameter Comparison

Engineering Selection Recommendations

T356F685K035AS is suitable for applications where RoHS non-compliance is acceptable or where legacy component specifications are required. This part maintains active product status with 1123 units in stock.

T356F685K035AT is the preferred selection for new designs and applications requiring regulatory compliance with RoHS3 standards. This substitute part is electrically and mechanically identical to the main part and carries active product status with 1561 units in stock. The RoHS3 compliance status of T356F685K035AT aligns with current environmental and regulatory requirements in most markets.

Both parts are manufactured by KEMET within the T356 UltraDip II series and are classified as REACH Unaffected with EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can T356F685K035AT be used as a direct replacement for T356F685K035AS?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 6.8 µF capacitance, ±10% tolerance, 35 V rating, 2.5 Ohm ESR, identical physical dimensions, and radial through-hole mounting. The primary difference is RoHS3 compliance status of the substitute part.

Q: What are the physical constraints for PCB layout compatibility?

A: Both parts share identical dimensions: 0.236" diameter (6.00 mm), maximum seated height of 0.441" (11.20 mm), and lead spacing of 0.200" (5.08 mm). PCB footprints designed for either part are interchangeable.

Q: Does the conformal coating affect substitution eligibility?

A: No. Both the main part and substitute are conformal coated tantalum capacitors. The coating type is identical and does not impact substitution compatibility.

Q: Are there temperature performance differences between these parts?

A: No. Both parts operate across the identical temperature range of -55°C to 125°C with no derating differences specified.

Q: What is the significance of the RoHS compliance difference?

A: T356F685K035AT is RoHS3 compliant, while T356F685K035AS is non-compliant. For applications subject to RoHS regulations or customer requirements, T356F685K035AT is the appropriate selection. For legacy systems or applications without RoHS mandates, either part is functionally equivalent.

Q: Are both parts currently available?

A: Yes. T356F685K035AS has 1123 units in stock, and T356F685K035AT has 1561 units in stock, both classified as new original inventory.