TAJS225M010RNJ Equivalent & Substitute Parts

Part Overview

The TAJS225M010RNJ is a 2.2 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 10 V with ±20% tolerance. This surface mount component in 1206 (3216 Metric) package is designed for general purpose applications across industrial and commercial electronics. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when design requirements permit flexibility in equivalent series resistance (ESR), packaging format, or manufacturer selection while maintaining core electrical specifications and mechanical compatibility.

Substiute Parts

TAJS225M010RNJ

KYOCERA AVXIn Stock: 2808TAJS225M010RNJ Datasheet

Current PartRFQ

TAJA225M010RNJ

KYOCERA AVXIn Stock: 1518TAJA225M010RNJ Datasheet

MFR RecommendedRFQ

TCA1A225M8R

KYOCERA AVXIn Stock: 1831TCA1A225M8R Datasheet

MFR RecommendedRFQ

TPSA225M010R1800

KYOCERA AVXIn Stock: 5825TPSA225M010R1800 Datasheet

MFR RecommendedRFQ

293D225X0010A2TE3

Vishay SpragueIn Stock: 4359293D225X0010A2TE3 Datasheet

MFR RecommendedRFQ

T491A225M010AT

KEMETIn Stock: 107824T491A225M010AT Datasheet

MFR RecommendedRFQ

T494A225M010AT

KEMETIn Stock: 2906T494A225M010AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TAJS225M010RNJ is determined by the following criteria:

Core Electrical Parameters (Non-Negotiable):

• Capacitance: 2.2 µF
• Voltage Rating: 10 V
• Tolerance: ±20%
• Type: Molded Tantalum

Mechanical Parameters (Non-Negotiable):

• Package / Case: 1206 (3216 Metric)
• Mounting Type: Surface Mount
• Operating Temperature: -55°C to 125°C

Variable Parameters (Substitution Allowed):

• ESR (Equivalent Series Resistance): 1.8 Ω to 12 Ω
• Height - Seated (Max): 1.20 mm to 1.80 mm
• Packaging Format: Tape & Reel (TR), Cut Tape (CT), or Digi-Reel®
• Manufacturer: KYOCERA AVX, KEMET, Vishay Sprague

All identified substitutes maintain identical electrical performance within the specified tolerance band and operate across the full temperature range. Differences in ESR and physical height reflect manufacturing series variations and do not affect functional compatibility in general purpose applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active production status and ROHS3 compliance. Selection between the TAJS225M010RNJ and its equivalents should be based on the following factors:

ESR Considerations: The original TAJS225M010RNJ operates at 12 Ω ESR. Substitutes with lower ESR values (1.8 Ω to 7 Ω) provide improved performance in high-frequency filtering and reduced heat dissipation. Selection of lower-ESR alternatives is appropriate when circuit design permits or benefits from reduced impedance characteristics.

Packaging Format: The original part is supplied in Tape & Reel format. Alternatives in Cut Tape with Digi-Reel® packaging (TAJA225M010RNJ, T491A225M010AT) offer identical electrical performance with different handling and storage formats suitable for automated assembly environments.

Manufacturer Selection: KYOCERA AVX, KEMET, and Vishay Sprague are established manufacturers with equivalent compliance certifications. Cross-manufacturer substitution is permissible when supply chain requirements or inventory management necessitate alternative sourcing.

Physical Height: The original part has a seated height of 1.20 mm. Substitutes with 1.80 mm height remain compatible with standard 1206 package specifications and PCB design clearances.

Frequently Asked Questions (FAQ)

Q: Can I substitute TPSA225M010R1800 for TAJS225M010RNJ in my design?

A: Yes. Both parts share identical capacitance (2.2 µF), voltage rating (10 V), tolerance (±20%), package (1206), and operating temperature range (-55°C to 125°C). The TPSA225M010R1800 features lower ESR (1.8 Ω vs. 12 Ω), which reduces impedance and heat generation. This substitution is electrically and mechanically compatible.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Both packaging formats contain identical components. Tape & Reel (TR) is supplied on continuous reels for high-volume automated assembly. Cut Tape (CT) with Digi-Reel® is pre-cut and presented in smaller quantities, suitable for lower-volume production or manual assembly. Electrical performance is identical.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All parts listed in this reference maintain ROHS3 compliance and MSL 1 (unlimited moisture sensitivity), matching the original TAJS225M010RNJ specifications.

Q: Can I use a substitute with different ESR in a high-frequency circuit?

A: ESR differences affect impedance behavior at high frequencies. Lower-ESR parts (such as TPSA225M010R1800 at 1.8 Ω) provide superior performance in filtering and decoupling applications. Higher-ESR parts remain functionally compatible but may exhibit different frequency response characteristics. Circuit validation is necessary if ESR-dependent performance is critical.

Q: Is the 1206 package dimension identical across all substitutes?

A: Yes. All parts conform to the 1206 (3216 Metric) package standard with footprint dimensions of 0.126" L x 0.063" W (3.20mm x 1.60mm). Seated height varies between 1.20 mm and 1.80 mm, which remains within standard PCB design clearances for this package class.

Q: Which substitute offers the best availability?

A: T491A225M010AT (KEMET) shows the highest inventory level at 107,772 pieces. TPSA225M010R1800 (KYOCERA AVX) offers 5,800 pieces. Availability should be confirmed with your component supplier for current stock status.