Equivalent & Substitute Parts for 0805J2000123KXT

Part Overview

The 0805J2000123KXT is a 0.012 µF ceramic capacitor manufactured by Knowles Syfer, rated for 200V with X7R temperature coefficient in 0805 (2012 Metric) surface mount package. This component is classified as Active and maintains full RoHS3 compliance with MSL 1 rating. Substitute parts are identified to provide design flexibility when the primary part is unavailable or when design requirements necessitate alternative electrical specifications.

Key Parameters

Parameter	Value
Capacitance	0.012 µF
Tolerance	±10%
Voltage Rating	200V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C ~ 125°C
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 0805J2000123KXT is determined by the following critical parameters:

Capacitance Value: Must be 0.012 µF
Tolerance: Must be ±10%
Temperature Coefficient: Must be X7R
Package / Case: Must be 0805 (2012 Metric)
Mounting Type: Must be Surface Mount, MLCC
Operating Temperature Range: Must support -55°C ~ 125°C
Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The identified substitute parts meet all mandatory electrical and mechanical parameters. Both KEMET alternatives (C0805C123KCRAC7800 and C0805V123KCRAC7800) provide higher voltage ratings (500V) while maintaining identical capacitance, tolerance, temperature coefficient, and package specifications. The elevated voltage rating represents an upgrade path suitable for applications requiring enhanced voltage margin.

Parameter Comparison

Parameter	0805J2000123KXT (Knowles Syfer)	C0805C123KCRAC7800 (KEMET)	C0805V123KCRAC7800 (KEMET)
Capacitance	0.012 µF	0.012 µF	0.012 µF
Tolerance	±10%	±10%	±10%
Voltage Rating	200V	500V	500V
Temperature Coefficient	X7R	X7R	X7R
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)
Thickness (Max)	0.051" (1.30mm)	0.055" (1.40mm)	0.055" (1.40mm)
Mounting Type	Surface Mount, MLCC	Surface Mount, MLCC	Surface Mount, MLCC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both KEMET substitute parts maintain Active product status and full ROHS3 compliance with MSL 1 rating, ensuring long-term availability and regulatory alignment with the original 0805J2000123KXT.

The C0805C123KCRAC7800 provides a direct upgrade with enhanced voltage capability (500V) while maintaining identical physical footprint and electrical characteristics. This part is suitable for applications where voltage margin improvement is beneficial.

The C0805V123KCRAC7800 offers the same electrical upgrade with additional ArcShield™ technology, providing enhanced arc suppression characteristics. This variant is appropriate for applications subject to transient voltage events or where arc resistance is a design consideration.

Physical compatibility is confirmed across all three parts within the 0805 package family. The maximum thickness differential (0.004" / 0.10mm) between the original part and KEMET substitutes is within standard PCB assembly tolerances and does not impact reflow processing or component placement.

Frequently Asked Questions (FAQ)

Q: Can C0805C123KCRAC7800 or C0805V123KCRAC7800 be used as direct replacements for 0805J2000123KXT?

A: Yes. Both KEMET parts are electrically and mechanically compatible. They maintain identical capacitance (0.012 µF), tolerance (±10%), temperature coefficient (X7R), and package specification (0805). The higher voltage rating (500V vs. 200V) represents an upgrade that does not compromise circuit functionality in applications designed for 200V operation.

Q: What is the difference between C0805C123KCRAC7800 and C0805V123KCRAC7800?

A: Both parts share identical electrical specifications (0.012 µF, ±10%, 500V, X7R). The C0805V variant incorporates ArcShield™ technology for enhanced arc suppression. Selection between these parts depends on application-specific requirements for transient voltage protection.

Q: Are there physical compatibility concerns when substituting these parts?

A: No. All three parts conform to the 0805 (2012 Metric) package specification with identical length (0.079" / 2.00mm) and width (0.049" / 1.25mm). Maximum thickness varies by 0.004" (0.10mm), which is within standard PCB assembly tolerances and does not affect reflow processing or placement equipment compatibility.

Q: Do the substitute parts maintain the same compliance certifications?

A: Yes. Both C0805C123KCRAC7800 and C0805V123KCRAC7800 are ROHS3 compliant with MSL 1 rating, matching the compliance profile of 0805J2000123KXT. Both parts maintain Active product status.

Q: What inventory considerations apply to these substitutes?

A: C0805C123KCRAC7800 has 10,082 pieces in stock, and C0805V123KCRAC7800 has 5,267 pieces in stock, compared to 1,130 pieces for the original 0805J2000123KXT. Substitute availability may provide supply chain advantages in procurement scenarios.

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