TAJS684K025RNJ Equivalent & Substitute Parts

Part Overview

The TAJS684K025RNJ is a 0.68 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 25 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 design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific performance parameters such as equivalent series resistance (ESR) characteristics.

Substiute Parts

TAJS684K025RNJ

KYOCERA AVXIn Stock: 845TAJS684K025RNJ Datasheet

Current PartRFQ

TAJA684K025RNJ

KYOCERA AVXIn Stock: 1167TAJA684K025RNJ Datasheet

MFR RecommendedRFQ

TPSA684K025R6000

KYOCERA AVXIn Stock: 1779TPSA684K025R6000 Datasheet

MFR RecommendedRFQ

293D684X9025A2TE3

Vishay SpragueIn Stock: 4794293D684X9025A2TE3 Datasheet

MFR RecommendedRFQ

T491A684K025AT

KEMETIn Stock: 839T491A684K025AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TAJS684K025RNJ is determined by strict equivalence across the following parameters:

• Capacitance value: 0.68 µF (exact match required)
• Voltage rating: 25 V (exact match required)
• Tolerance: ±10% (exact match required)
• Package / Case: 1206 (3216 Metric) (exact match required)
• Mounting type: Surface Mount (exact match required)
• Type: Molded Tantalum (exact match required)
• Operating temperature range: -55°C to 125°C (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Equivalent series resistance (ESR) values may vary within acceptable ranges for the same capacitance and voltage rating. All identified substitutes meet these core electrical and mechanical criteria.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. Selection among equivalent parts should be based on:

• ESR performance requirements: TPSA684K025R6000 offers the lowest ESR at 6 Ohm, suitable for applications requiring reduced impedance. TAJA684K025RNJ, T491A684K025AT, and TAJS684K025RNJ maintain 10 Ohm ESR. 293D684X9025A2TE3 provides 8.4 Ohm ESR as an intermediate option.

• Physical height constraints: TAJS684K025RNJ has a maximum seated height of 0.047" (1.20 mm), while all substitute parts measure 0.071" (1.80 mm). Applications with strict height limitations must retain the original TAJS684K025RNJ.

• Packaging format: TAJS684K025RNJ, TAJA684K025RNJ, TPSA684K025R6000, and 293D684X9025A2TE3 are supplied in Tape & Reel (TR) format. T491A684K025AT is supplied in Cut Tape (CT) & Digi-Reel® format.

• Inventory availability: All parts are in stock with varying quantities. Selection should align with supply chain and procurement timelines.

Frequently Asked Questions (FAQ)

Q: Can TAJA684K025RNJ be used as a direct replacement for TAJS684K025RNJ?

A: TAJA684K025RNJ is electrically equivalent with identical capacitance, voltage rating, tolerance, and ESR specifications. However, the seated height differs: TAJA684K025RNJ measures 0.071" (1.80 mm) versus TAJS684K025RNJ at 0.047" (1.20 mm). Verify PCB layout clearance before substitution.

Q: What is the difference between TPSA684K025R6000 and other substitutes?

A: TPSA684K025R6000 is distinguished by its lower ESR of 6 Ohm compared to 10 Ohm in TAJS684K025RNJ and T491A684K025AT. This lower impedance may benefit high-frequency or low-impedance circuit applications. All other electrical and mechanical parameters remain equivalent.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitutes—TAJA684K025RNJ, TPSA684K025R6000, 293D684X9025A2TE3, and T491A684K025AT—are ROHS3 compliant and suitable for applications requiring regulatory compliance.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats are packaging and delivery methods only. Electrical and mechanical specifications remain identical. Selection should be based on assembly equipment compatibility and procurement workflow.

Q: What is the significance of the Manufacturer Size Code?

A: The Manufacturer Size Code indicates the physical form factor. TAJS684K025RNJ carries code "S," while all substitutes carry code "A." This correlates with the seated height difference noted above. Code "A" parts are taller and may require PCB layout verification.