C0603C391J2RACTU Equivalent & Substitute Parts

Part Overview

The C0603C391J2RACTU is a 390 pF ±5% 200V ceramic capacitor manufactured by KEMET in 0603 (1608 Metric) surface mount package. This multilayer ceramic capacitor (MLCC) features X7R temperature coefficient and is designed for bypass and decoupling applications. The part is currently in active production status with 941 pieces available in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and rated voltage.

Substiute Parts

C0603C391J2RACTU

KEMETIn Stock: 954C0603C391J2RACTU Datasheet

Current PartRFQ

CGJ3E3C0G2D391J080AA

TDK CorporationIn Stock: 6056CGJ3E3C0G2D391J080AA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the C0603C391J2RACTU is determined by strict equivalence in the following parameters:

Mandatory Matching Parameters:

• Capacitance value: 390 pF
• Rated voltage: 200V (minimum)
• Package footprint: 0603 (1608 Metric)
• Mounting type: Surface Mount, MLCC
• Operating temperature range: -55°C ~ 125°C (minimum)
• Tolerance: ±5% (or tighter)

Acceptable Variations:

• Temperature coefficient: X7R and C0G/NP0 are both acceptable for bypass and decoupling applications
• Packaging format: Tape & Reel (TR) and Cut Tape (CT) are both acceptable
• Product status: Active and Obsolete parts with identical electrical specifications are functionally equivalent
• Thickness: Variations within standard 0603 package specifications do not affect substitution

The identified substitute CGJ3E3C0G2D391J080AA meets all mandatory parameters while differing only in temperature coefficient (C0G/NP0 instead of X7R) and product status (Obsolete instead of Active).

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Recommended): The C0603C391J2RACTU remains the preferred choice for new designs due to active production status, ensuring long-term availability and supply chain stability.

Substitute Selection Criteria: The CGJ3E3C0G2D391J080AA is electrically and mechanically equivalent and may be selected when:

• The C0603C391J2RACTU is unavailable or on extended lead time
• Existing inventory of the TDK part is available for immediate use
• The application does not require X7R temperature coefficient specifically
• The design can accommodate C0G/NP0 temperature coefficient characteristics

Compliance Considerations: Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The TDK substitute carries AEC-Q200 automotive qualification, which may be advantageous for automotive applications despite its obsolete status.

Supply Chain Note: The C0603C391J2RACTU has 941 pieces in stock, while the CGJ3E3C0G2D391J080AA has 6025 pieces available. Substitute selection should account for current inventory levels and project timelines.

Frequently Asked Questions (FAQ)

Q: Can CGJ3E3C0G2D391J080AA be used as a direct replacement for C0603C391J2RACTU?

A: Yes. Both parts have identical capacitance (390 pF), tolerance (±5%), rated voltage (200V), package footprint (0603), and operating temperature range (-55°C ~ 125°C). The temperature coefficient differs (C0G/NP0 versus X7R), but both are suitable for bypass and decoupling applications.

Q: What is the difference between X7R and C0G temperature coefficients?

A: X7R provides ±15% capacitance change over the operating temperature range. C0G/NP0 provides 0±30 ppm/°C, resulting in minimal capacitance variation. For bypass and decoupling applications, both are acceptable. C0G/NP0 is preferred for precision timing and filtering circuits.

Q: Will the substitute part fit the same PCB footprint?

A: Yes. Both parts use the 0603 (1608 Metric) package with identical dimensions: 0.063" L x 0.031" W (1.60mm x 0.80mm). PCB layout and reflow profiles remain unchanged.

Q: Why is the TDK part listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. However, the part remains functionally equivalent and is available through existing inventory channels. For new designs, the active KEMET part is recommended for supply continuity.

Q: Are there any packaging format differences between these parts?

A: The KEMET part is supplied in Tape & Reel (TR) format, while the TDK substitute is available in Cut Tape (CT) format. Both formats are suitable for automated assembly; format selection depends on production volume and equipment compatibility.

Q: What certifications apply to these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. The TDK substitute additionally carries AEC-Q200 automotive qualification, making it suitable for automotive applications.

Q: Can I mix these parts in the same production batch?

A: Yes. Both parts meet identical electrical and mechanical specifications for the 0603 package. However, separate procurement and inventory tracking is recommended to maintain supply chain traceability.