1206J2500331MXT Equivalent & Substitute Parts

Part Overview

The 1206J2500331MXT is a 330 pF ceramic capacitor manufactured by Knowles Syfer, rated for 250V with X7R temperature coefficient in 1206 (3216 Metric) surface mount package. This part is currently active and widely available with 855 units in stock. Equivalent and substitute parts are identified based on matching capacitance, package format, and operating temperature range while accommodating variations in voltage rating, tolerance, and temperature coefficient that may be required for specific application requirements.

Key Parameters

Parameter	Value
Capacitance	330 pF
Voltage Rating	250V
Tolerance	±20%
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount, MLCC
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 1206J2500331MXT is determined by the following criteria:

Primary Matching Parameters:

Capacitance: 330 pF (exact match required)
Package: 1206 (3216 Metric) (exact match required)
Operating Temperature: -55°C to 125°C (exact match required)
Mounting Type: Surface Mount, MLCC (exact match required)

Allowable Variations:

Voltage Rating: May be equal to or greater than 250V
Tolerance: May be tighter (±10%, ±5%) or equal to ±20%
Temperature Coefficient: X7R, C0G/NP0 both acceptable for general purpose applications
Thickness: Variations within package specification acceptable

Substitute parts are grouped into two categories: X7R temperature coefficient parts (direct functional equivalents) and C0G/NP0 temperature coefficient parts (higher stability alternatives with enhanced performance characteristics).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Temp Coeff	Package	Thickness	Product Status	Inventory
1206J2500331MXT	Knowles Syfer	330 pF	250V	±20%	X7R	1206	1.60mm	Active	855
CC1206KKX7RBBB331	YAGEO	330 pF	500V	±10%	X7R	1206	1.45mm	Active	1315
CC1206KKX7RZBB331	YAGEO	330 pF	630V	±10%	X7R	1206	1.45mm	Active	6924
KGM31DR72H331KU	KYOCERA AVX	330 pF	500V	±10%	X7R	1206	1.45mm	Active	4827
C1206C331JBGAC7800	KEMET	330 pF	630V	±5%	C0G/NP0	1206	1.75mm	Active	9104
C1206C331JCGAC7800	KEMET	330 pF	500V	±5%	C0G/NP0	1206	1.35mm	Active	3902
C1206C331KCGAC7800	KEMET	330 pF	500V	±10%	C0G/NP0	1206	1.35mm	Active	43108
C3216C0G2J331K060AA	TDK Corporation	330 pF	630V	±10%	C0G/NP0	1206	0.75mm	Not For New Designs	9345
CC1206JRNPOBBN331	YAGEO	330 pF	500V	±5%	C0G/NP0	1206	0.70mm	Active	17748
CC1206KRNPOBBN331	YAGEO	330 pF	500V	±10%	C0G/NP0	1206	0.70mm	Active	20011
KGM31VCG2H331JU	KYOCERA AVX	330 pF	500V	±5%	C0G/NP0	1206	1.22mm	Active	8959

Engineering Selection Recommendations

X7R Temperature Coefficient Substitutes (Direct Functional Equivalents):

CC1206KKX7RBBB331 and KGM31DR72H331KU provide 500V rated alternatives with improved tolerance (±10%) while maintaining X7R temperature coefficient. Both parts are active products from established manufacturers with strong inventory availability.

CC1206KKX7RZBB331 offers the highest voltage rating at 630V with X7R coefficient and ±10% tolerance, providing maximum design margin for applications requiring higher voltage headroom.

C0G/NP0 Temperature Coefficient Substitutes (Enhanced Stability):

KEMET C1206C series parts (C1206C331JCGAC7800, C1206C331KCGAC7800, C1206C331JBGAC7800) provide C0G/NP0 temperature coefficient with tighter tolerance specifications (±5% or ±10%) and are designated as active products. C1206C331KCGAC7800 offers the highest inventory level (43,108 units) with ±10% tolerance matching the original part's tolerance specification.

YAGEO CC1206JRNPOBBN331 and CC1206KRNPOBBN331 provide C0G/NP0 alternatives with 500V rating and active product status. CC1206KRNPOBBN331 maintains ±10% tolerance with 20,011 units available.

KYOCERA AVX KGM31VCG2H331JU offers C0G/NP0 coefficient with ±5% tolerance and active product status.

Not Recommended for New Designs:

C3216C0G2J331K060AA (TDK Corporation) is designated "Not For New Designs" and should not be selected for new applications despite meeting electrical specifications.

All recommended substitutes are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity level).

Frequently Asked Questions (FAQ)

Q: Can I substitute the 1206J2500331MXT with a higher voltage rated part?

A: Yes. Substitutes with voltage ratings of 500V or 630V are electrically compatible. Higher voltage ratings provide additional design margin and do not negatively impact circuit performance in applications designed for 250V operation.

Q: What is the difference between X7R and C0G/NP0 temperature coefficients?

A: X7R provides ±15% capacitance variation across the -55°C to 125°C operating range. C0G/NP0 provides superior stability with minimal capacitance variation across temperature. C0G/NP0 parts are suitable for applications requiring tighter capacitance tolerance over temperature.

Q: Are all substitute parts available in the same physical dimensions?

A: All substitute parts use the 1206 (3216 Metric) package. Thickness varies between 0.70mm and 1.75mm depending on manufacturer and voltage rating. Verify PCB layout clearance if thickness variation exceeds design specifications.

Q: Can I use a ±5% tolerance part as a substitute for the ±20% original part?

A: Yes. Tighter tolerance specifications are compatible substitutes. A ±5% part will meet all requirements of a ±20% specification.

Q: Why should I avoid the TDK C3216C0G2J331K060AA part?

A: This part is designated "Not For New Designs" by the manufacturer, indicating it is in end-of-life status. New designs should select from active product alternatives.

Q: Which substitute offers the best inventory availability?

A: KEMET C1206C331KCGAC7800 provides the highest inventory level at 43,108 units with active product status, ±10% tolerance, and 500V rating.

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