Vishay Cera-Mite 561R1DF0Q18 Equivalent & Substitute Parts

Part Overview

The Vishay Cera-Mite 561R1DF0Q18 is an 18 pF ceramic capacitor rated for 1000V (1kV) with N1500 temperature coefficient, designed for general-purpose applications requiring low dissipation factor performance. This part is classified as obsolete, making identification of active equivalent components necessary for ongoing procurement and design continuity. The substitute part maintains the same electrical specifications while offering improved product availability and active manufacturing status.

Substiute Parts

561R1DF0Q18

Vishay Cera-MiteIn Stock: 1051561R1DF0Q18 Datasheet

Current PartRFQ

561R10TCCQ18

Vishay Cera-MiteIn Stock: 1948561R10TCCQ18 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Vishay Cera-Mite 561R10TCCQ18 qualifies as a direct substitute based on the following critical parameters:

Capacitance value matches exactly at 18 pF with identical ±5% tolerance. Voltage rating is identical at 1000V (1kV). Temperature coefficient specifications are compatible, with the substitute offering C0G/NP0 classification, which is a recognized equivalent to N1500 for this capacitance and voltage class. Operating temperature range remains -55°C to 105°C. Lead spacing is maintained at 0.252" (6.40mm), ensuring PCB footprint compatibility. Both parts are through-hole mounted with radial disc packaging. RoHS3 compliance is maintained across both parts.

The primary distinction is product status: the original part is obsolete, while the substitute is active in production with significantly higher inventory availability (1915 pcs vs. 989 pcs).

Parameter Comparison

Engineering Selection Recommendations

The 561R10TCCQ18 is the appropriate selection for applications currently specified with the 561R1DF0Q18. Both parts maintain identical electrical performance across capacitance, tolerance, voltage rating, and operating temperature specifications. The substitute part offers the advantage of active production status, ensuring long-term availability and supply chain continuity. ROHS3 compliance is maintained, and the substitute achieves REACH Unaffected status, providing improved regulatory positioning. The physical dimension increase (0.291" vs. 0.252" diameter) requires PCB layout verification, though lead spacing remains unchanged at 0.252" (6.40mm), preserving hole-to-hole compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 561R10TCCQ18 be used as a direct replacement for the 561R1DF0Q18?

A: Yes. Both parts share identical capacitance (18 pF), tolerance (±5%), voltage rating (1000V), operating temperature range (-55°C to 105°C), and lead spacing (0.252"). The temperature coefficient specifications are compatible for this application class.

Q: What is the difference between N1500 and C0G/NP0 temperature coefficients?

A: Both are recognized temperature coefficient classifications for ceramic capacitors in this voltage and capacitance range. C0G/NP0 represents a more stable temperature characteristic, while N1500 indicates a nominal temperature coefficient of 1500 ppm/°C. For the specified operating range and application, these are functionally equivalent.

Q: Does the larger physical dimension of the substitute part affect PCB compatibility?

A: The substitute part has a larger diameter (0.291" vs. 0.252"), which requires verification against PCB layout constraints. However, the critical lead spacing dimension remains identical at 0.252" (6.40mm), ensuring hole-to-hole compatibility on existing PCB designs. Physical clearance around the component footprint must be confirmed.

Q: What is the inventory advantage of the substitute part?

A: The 561R10TCCQ18 has 1915 pcs in stock compared to 989 pcs for the original part. Additionally, the substitute is active in production, whereas the original is obsolete, providing superior long-term availability.

Q: Are there any regulatory compliance differences?

A: Both parts are ROHS3 compliant. The substitute achieves REACH Unaffected status, compared to REACH Affected for the original part, providing improved regulatory positioning for new designs and long-term supply assurance.