TAJD336M020SNJ Equivalent & Substitute Parts

Part Overview

The TAJD336M020SNJ is a 33 µF molded tantalum capacitor manufactured by KYOCERA AVX, rated for 20 V with ±20% tolerance. This component operates across the temperature range of -55°C to 125°C and features an ESR of 900 mOhm in a 2917 (7343 Metric) surface mount package. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	33 µF
Voltage Rating	20 V
Tolerance	±20%
Type	Molded Tantalum
ESR (Equivalent Series Resistance)	900 mOhm
Package / Case	2917 (7343 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

Substitute parts are organized into three categories based on substitution criteria:

Direct Equivalent (Same Electrical & Mechanical Specifications):

TAJD336M020RNJ: Identical capacitance, voltage, tolerance, ESR, and package. Differs only in packaging format (Tape & Reel).

Upgraded Tolerance (±10% vs ±20%):

TAJD336K020RNJ: Reduces tolerance to ±10% while maintaining 20 V rating and 900 mOhm ESR. Packaging: Cut Tape & Digi-Reel.
THJD336K020RJN: Automotive-grade equivalent (THJ series, AEC-Q200) with ±10% tolerance, extended temperature range (-55°C to 175°C), and automotive features.

Upgraded Voltage Rating (25 V or 35 V):

TAJD336K025RNJ: ±10% tolerance, 25 V rating, 900 mOhm ESR.
TAJD336K035RNJ: ±10% tolerance, 35 V rating, 900 mOhm ESR.
TAJD336M025RNJ: ±20% tolerance, 25 V rating, 900 mOhm ESR.
TAJD336M035RNJ: ±20% tolerance, 35 V rating, 900 mOhm ESR.
THJD336K025RJN: Automotive-grade, ±10% tolerance, 25 V rating, extended temperature range.

Lower ESR Alternative (200 mOhm vs 900 mOhm):

TPSD336M020R0200: TPS series with reduced ESR of 200 mOhm, maintaining 33 µF, 20 V, ±20% tolerance.
TPSD336M020S0200: TPS series with reduced ESR of 200 mOhm, maintaining 33 µF, 20 V, ±20% tolerance.

All substitute parts maintain the same 2917 (7343 Metric) package footprint and surface mount mounting type, ensuring mechanical compatibility.

Parameter Comparison

Part Number	Series	Capacitance	Voltage	Tolerance	ESR	Temp Range	Package	Features
TAJD336M020SNJ	TAJ	33 µF	20 V	±20%	900 mOhm	-55°C to 125°C	2917	General Purpose
TAJD336M020RNJ	TAJ	33 µF	20 V	±20%	900 mOhm	-55°C to 125°C	2917	General Purpose
TAJD336K020RNJ	TAJ	33 µF	20 V	±10%	900 mOhm	-55°C to 125°C	2917	General Purpose
TAJD336K025RNJ	TAJ	33 µF	25 V	±10%	900 mOhm	-55°C to 125°C	2917	General Purpose
TAJD336K035RNJ	TAJ	33 µF	35 V	±10%	900 mOhm	-55°C to 125°C	2917	General Purpose
TAJD336M025RNJ	TAJ	33 µF	25 V	±20%	900 mOhm	-55°C to 125°C	2917	General Purpose
TAJD336M035RNJ	TAJ	33 µF	35 V	±20%	900 mOhm	-55°C to 125°C	2917	General Purpose
THJD336K020RJN	THJ	33 µF	20 V	±10%	900 mOhm @ 100kHz	-55°C to 175°C	2917	Automotive (AEC-Q200)
THJD336K025RJN	THJ	33 µF	25 V	±10%	900 mOhm @ 100kHz	-55°C to 175°C	2917	Automotive (AEC-Q200)
TPSD336M020R0200	TPS	33 µF	20 V	±20%	200 mOhm	-55°C to 125°C	2917	General Purpose
TPSD336M020S0200	TPS	33 µF	20 V	±20%	200 mOhm	-55°C to 125°C	2917	General Purpose

Engineering Selection Recommendations

Direct Substitution (No Design Changes Required): TAJD336M020RNJ is a direct equivalent suitable for immediate substitution. Both parts are Active status, ROHS3 compliant, and maintain identical electrical and mechanical specifications. Selection between these parts depends on packaging availability (Tape & Reel format).

Tolerance Upgrade Path: TAJD336K020RNJ provides tighter tolerance (±10%) while maintaining the same voltage and ESR characteristics. This substitution is applicable when design specifications require improved capacitance accuracy without modifying circuit performance.

Voltage Margin Enhancement: TAJD336K025RNJ and TAJD336M025RNJ increase voltage rating to 25 V, providing additional safety margin in applications where the original 20 V rating is marginal. TAJD336K035RNJ and TAJD336M035RNJ extend to 35 V for designs requiring higher voltage headroom.

Automotive Applications: THJD336K020RJN and THJD336K025RJN are AEC-Q200 qualified automotive-grade alternatives with extended operating temperature range (-55°C to 175°C). These parts are suitable for automotive and high-reliability applications requiring automotive qualification.

Low ESR Requirement: TPSD336M020R0200 and TPSD336M020S0200 reduce ESR from 900 mOhm to 200 mOhm. Selection of these parts is necessary only when circuit design requires lower impedance at operating frequencies.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and the 2917 (7343 Metric) package footprint.

Frequently Asked Questions (FAQ)

Q: Can TAJD336M020RNJ replace TAJD336M020SNJ directly? A: Yes. Both parts share identical electrical specifications (33 µF, 20 V, ±20%, 900 mOhm ESR) and mechanical package (2917). The difference is packaging format. Direct substitution requires no circuit modifications.

Q: What is the difference between ±20% and ±10% tolerance parts? A: Tolerance defines the allowable deviation from the nominal capacitance value. ±20% tolerance permits capacitance between 26.4 µF and 39.6 µF. ±10% tolerance restricts the range to 29.7 µF to 36.3 µF. Tighter tolerance improves circuit predictability but may increase component cost.

Q: When should I use the 25 V or 35 V rated alternatives? A: Voltage-rated substitutes are selected when the circuit operating voltage approaches or exceeds the original 20 V rating. Using a higher-rated capacitor provides voltage safety margin and reduces stress on the component. Selection depends on actual circuit voltage requirements.

Q: Are automotive-grade parts (THJ series) compatible with general-purpose designs? A: Yes. Automotive-grade parts (THJD336K020RJN, THJD336K025RJN) meet all general-purpose requirements and exceed them through AEC-Q200 qualification and extended temperature range. These parts are suitable for any application but may carry higher cost due to automotive qualification.

Q: What does ESR mean and when does it matter? A: ESR (Equivalent Series Resistance) represents the internal resistance of the capacitor at operating frequency. Lower ESR reduces impedance and heat generation. Standard TAJ parts feature 900 mOhm ESR. TPS series alternatives provide 200 mOhm ESR for applications requiring lower impedance, such as high-frequency filtering or low-noise power delivery.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and are suitable for applications requiring RoHS certification.

Q: Can I mix different part numbers in the same design? A: All substitute parts maintain the same 2917 (7343 Metric) package footprint and surface mount configuration, enabling mechanical interchangeability on the PCB. Electrical interchangeability depends on circuit tolerance to capacitance variation and ESR differences. Designs should specify acceptable parameter ranges rather than specific part numbers when multiple substitutes are acceptable.

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