TAJS105K035RNJ Equivalent & Substitute Parts

Part Overview

The TAJS105K035RNJ is a 1 µF molded tantalum capacitor rated for 35 V, manufactured by KYOCERA AVX in the 1206 (3216 Metric) package. This component is in active production status and is widely used in general-purpose applications requiring stable capacitance and low equivalent series resistance (ESR). Substitute parts become necessary when the primary part experiences supply constraints, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from qualified manufacturers.

Key Parameters

Parameter	Value
Capacitance	1 µF
Tolerance	±10%
Voltage Rating	35 V
Type	Molded Tantalum
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TAJS105K035RNJ is determined by strict adherence to the following parameters:

Capacitance: Must be 1 µF
Tolerance: Must be ±10%
Voltage Rating: Must be 35 V
Package / Case: Must be 1206 (3216 Metric)
Mounting Type: Must be Surface Mount
Operating Temperature Range: Must support -55°C to 125°C
Type: Must be Molded Tantalum
RoHS Status: Must be ROHS3 Compliant
Moisture Sensitivity Level: Must be 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical requirements. Variations in ESR, packaging format (Tape & Reel vs. Cut Tape), and manufacturer series do not affect functional substitutability within the specified parameter constraints.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Tolerance	Voltage Rating	ESR	Package Format	Height (Max)	Product Status
TAJS105K035RNJ	KYOCERA AVX	TAJ	1 µF	±10%	35 V	7.5 Ohm	Tape & Reel (TR)	0.047" (1.20mm)	Active
TAJA105K035RNJ	KYOCERA AVX	TAJ	1 µF	±10%	35 V	7.5 Ohm	Cut Tape (CT) & Digi-Reel®	0.071" (1.80mm)	Active
TPSA105K035R3000	KYOCERA AVX	TPS	1 µF	±10%	35 V	3 Ohm	Cut Tape (CT) & Digi-Reel®	0.071" (1.80mm)	Active
293D105X9035A2TE3	Vishay Sprague	293D	1 µF	±10%	35 V	7.5 Ohm	Tape & Reel (TR)	0.071" (1.80mm)	Active
T491A105K035AT	KEMET	T491	1 µF	±10%	35 V	7 Ohm	Cut Tape (CT) & Digi-Reel®	0.071" (1.80mm)	Active
TR3A105K035C3000	Vishay Sprague	TR3	1 µF	±10%	35 V	3 Ohm	Tape & Reel (TR)	0.071" (1.80mm)	Active

Engineering Selection Recommendations

All listed substitute parts are in active production status and maintain ROHS3 compliance with Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with standard manufacturing and storage protocols. Selection among these alternatives should be based on:

Packaging Format Compatibility: The TAJS105K035RNJ is supplied in Tape & Reel format. Direct format equivalents include TAJA105K035RNJ (same manufacturer, Cut Tape alternative), 293D105X9035A2TE3 (Vishay Sprague, Tape & Reel), and TR3A105K035C3000 (Vishay Sprague, Tape & Reel).

ESR Considerations: Parts with lower ESR values (TPSA105K035R3000 at 3 Ohm and TR3A105K035C3000 at 3 Ohm) provide reduced equivalent series resistance compared to the original 7.5 Ohm specification. The T491A105K035AT offers 7 Ohm ESR, closely matching the original part.

Manufacturer Qualification: KYOCERA AVX, Vishay Sprague, and KEMET are all established manufacturers of molded tantalum capacitors meeting the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can TAJA105K035RNJ replace TAJS105K035RNJ directly?

A: Yes. Both parts are manufactured by KYOCERA AVX with identical electrical specifications (1 µF, ±10%, 35 V, 7.5 Ohm ESR). The primary difference is packaging format: TAJS is Tape & Reel while TAJA is Cut Tape & Digi-Reel. Height differs slightly (1.20mm vs. 1.80mm seated height), which may affect PCB layout considerations.

Q: What is the advantage of TPSA105K035R3000 or TR3A105K035C3000?

A: Both parts feature 3 Ohm ESR compared to the original 7.5 Ohm, reducing equivalent series resistance by 60%. This lower ESR can improve performance in high-frequency applications or reduce thermal dissipation. All other electrical parameters remain identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with standard manufacturing processes and storage requirements.

Q: Does package height affect substitutability?

A: Package height differences (1.20mm vs. 1.80mm) do not affect electrical substitutability but may impact PCB layout and clearance requirements. Verify mechanical fit within your specific application before implementation.

Q: Can I use parts from different manufacturers interchangeably?

A: Yes, provided all electrical and mechanical parameters match the specification. KYOCERA AVX, Vishay Sprague, and KEMET parts listed all meet the core requirements for 1 µF, ±10%, 35 V, 1206 package, Surface Mount molded tantalum capacitors.

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