TAJS684K035RNJ Equivalent & Substitute Parts

Part Overview

The TAJS684K035RNJ is a 0.68 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 35 V operation in a 1206 (3216 Metric) surface mount package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when electrical specifications, mechanical dimensions, and package compatibility align within the allowed parameters for this product category.

Substiute Parts

TAJS684K035RNJ

KYOCERA AVXIn Stock: 968TAJS684K035RNJ Datasheet

Current PartRFQ

TAJA684K035RNJ

KYOCERA AVXIn Stock: 25169TAJA684K035RNJ Datasheet

MFR RecommendedRFQ

293D684X9035A2TE3

Vishay SpragueIn Stock: 3873293D684X9035A2TE3 Datasheet

MFR RecommendedRFQ

T491A684K035AT

KEMETIn Stock: 4191T491A684K035AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TAJS684K035RNJ are qualified based on the following criteria:

• Capacitance value: 0.68 µF
• Tolerance: ±10%
• Voltage rating: 35 V
• Package type: 1206 (3216 Metric)
• Mounting type: Surface Mount
• Operating temperature range: -55°C ~ 125°C
• Compliance: ROHS3 Compliant, REACH Unaffected

All identified substitutes maintain these core electrical and mechanical parameters. Variations in ESR (Equivalent Series Resistance) and maximum seated height are within acceptable ranges for this component category and do not affect functional interchangeability in standard applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance. Selection among these alternatives should be based on:

• PCB layout constraints: The TAJS684K035RNJ features a maximum seated height of 0.047" (1.20mm), while substitute parts TAJA684K035RNJ, 293D684X9035A2TE3, and T491A684K035AT have a maximum seated height of 0.071" (1.80mm). Applications with height restrictions may require the original part.
• Inventory availability: TAJA684K035RNJ offers the highest stock level at 25100 pieces.
• ESR performance: 293D684X9035A2TE3 provides the lowest ESR at 7.6 Ohm, compared to 8 Ohm for other options.
• Manufacturer preference: All manufacturers (KYOCERA AVX, Vishay Sprague, KEMET) are established suppliers with equivalent compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can TAJA684K035RNJ replace TAJS684K035RNJ directly?

A: Yes. Both parts are manufactured by KYOCERA AVX with identical electrical specifications (0.68 µF, ±10%, 35 V). The primary difference is seated height: TAJA684K035RNJ is 0.071" (1.80mm) versus TAJS684K035RNJ at 0.047" (1.20mm). Verify PCB clearance before substitution.

Q: What is the difference between the Vishay Sprague 293D684X9035A2TE3 and other substitutes?

A: The 293D684X9035A2TE3 has an ESR of 7.6 Ohm, slightly lower than the 8 Ohm specification of other alternatives. All other electrical and mechanical parameters are equivalent. This lower ESR may provide marginal performance benefits in high-frequency or low-impedance applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting the same environmental and regulatory standards as the original TAJS684K035RNJ.

Q: Does the height difference affect circuit performance?

A: Height differences do not affect electrical performance. However, PCB layout and clearance requirements may restrict part selection. Verify available vertical space in your application before choosing a substitute with greater seated height.

Q: Which substitute offers the best inventory availability?

A: TAJA684K035RNJ provides the highest stock level at 25100 pieces, compared to 3832 pieces for the Vishay Sprague part and 4175 pieces for the KEMET part.