1206J1000331MXT Equivalent & Substitute Parts

Part Overview

The 1206J1000331MXT is a 330 pF ceramic capacitor manufactured by Knowles Syfer, rated at 100V with X7R temperature coefficient in 1206 (3216 Metric) surface mount package. This part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching capacitance, package format, and temperature coefficient characteristics, with allowances for voltage rating upgrades and tolerance variations that maintain functional compatibility.

Key Parameters

Parameter	Value
Capacitance	330 pF
Tolerance	±20%
Voltage Rating	100V
Temperature Coefficient	X7R
Package / Case	1206 (3216 Metric)
Mounting Type	Surface Mount, MLCC
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 1206J1000331MXT is determined by the following criteria:

Primary Matching Parameters:

Capacitance: 330 pF (exact match required)
Package: 1206 (3216 Metric) surface mount (exact match required)
Temperature Coefficient: X7R (exact match required)
Operating Temperature: -55°C ~ 125°C (exact match required)

Allowable Variations:

Voltage Rating: Equal to or greater than 100V
Tolerance: ±20% or tighter (±10%, ±5%)
Thickness: Variations acceptable within package constraints

Substitute parts are grouped into two categories: X7R-based equivalents with upgraded voltage ratings, and C0G/NP0-based alternatives offering superior temperature stability and tighter tolerance at the cost of different dielectric characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	RoHS Status
1206J1000331MXT	Knowles Syfer	330 pF	±20%	100V	X7R	1206 (3216 Metric)	0.063" (1.60mm)	ROHS3 Compliant
CC1206KKX7RBBB331	YAGEO	330 pF	±10%	500V	X7R	1206 (3216 Metric)	0.057" (1.45mm)	ROHS3 Compliant
CC1206KKX7RZBB331	YAGEO	330 pF	±10%	630V	X7R	1206 (3216 Metric)	0.057" (1.45mm)	ROHS3 Compliant
CC1206KRX7R0BB331	YAGEO	330 pF	±10%	100V	X7R	1206 (3216 Metric)	0.037" (0.95mm)	ROHS3 Compliant
KGM31DR72H331KU	KYOCERA AVX	330 pF	±10%	500V	X7R	1206 (3216 Metric)	0.057" (1.45mm)	ROHS3 Compliant
C1206C331J1GAC7800	KEMET	330 pF	±5%	100V	C0G, NP0	1206 (3216 Metric)	0.035" (0.88mm)	ROHS3 Compliant
C1206C331J2GAC7800	KEMET	330 pF	±5%	200V	C0G, NP0	1206 (3216 Metric)	0.035" (0.88mm)	ROHS3 Compliant
C1206C331JBGAC7800	KEMET	330 pF	±5%	630V	C0G, NP0	1206 (3216 Metric)	0.069" (1.75mm)	ROHS3 Compliant
C1206C331JCGAC7800	KEMET	330 pF	±5%	500V	C0G, NP0	1206 (3216 Metric)	0.053" (1.35mm)	ROHS3 Compliant
C1206C331K1GAC7800	KEMET	330 pF	±10%	100V	C0G, NP0	1206 (3216 Metric)	0.035" (0.88mm)	ROHS3 Compliant
C1206C331K2GAC7800	KEMET	330 pF	±10%	200V	C0G, NP0	1206 (3216 Metric)	0.035" (0.88mm)	ROHS3 Compliant

Engineering Selection Recommendations

X7R Dielectric Substitutes (Direct Functional Equivalents):

CC1206KRX7R0BB331 (YAGEO) provides direct X7R substitution at 100V with tighter ±10% tolerance and reduced thickness (0.95mm vs 1.60mm). This part maintains identical voltage rating and temperature coefficient while improving tolerance performance.

CC1206KKX7RBBB331 (YAGEO) and KGM31DR72H331KU (KYOCERA AVX) both offer 500V X7R ratings with ±10% tolerance. These are suitable for applications requiring voltage margin above the 100V specification.

CC1206KKX7RZBB331 (YAGEO) provides the highest voltage rating at 630V with X7R characteristics and ±10% tolerance.

C0G/NP0 Dielectric Alternatives:

KEMET C1206C series parts (C1206C331J1GAC7800, C1206C331K1GAC7800, C1206C331J2GAC7800, C1206C331K2GAC7800, C1206C331JCGAC7800, C1206C331JBGAC7800) offer C0G/NP0 temperature coefficient with superior temperature stability and tighter tolerance (±5% or ±10%). These are suitable for applications where temperature coefficient performance is critical. C0G/NP0 dielectric differs from X7R and should be selected only when temperature stability requirements justify the dielectric change.

All substitute parts are ROHS3 compliant with MSL 1 rating, matching the original part's environmental compliance profile.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher voltage rating than the original 100V specification?

A: Yes. Higher voltage ratings (500V, 630V) are acceptable substitutes. The capacitor will function correctly in circuits designed for 100V operation. Voltage rating indicates the maximum safe operating voltage; using a part rated above the circuit requirement does not degrade performance.

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

A: X7R provides ±15% capacitance change across the -55°C to 125°C operating range. C0G/NP0 provides superior stability with minimal capacitance change across temperature. Select C0G/NP0 only if the application requires tighter temperature stability; otherwise, X7R substitutes are functionally equivalent.

Q: Are tolerance differences (±20%, ±10%, ±5%) significant for substitution?

A: Tighter tolerance (±10%, ±5%) is always acceptable as a substitute for looser tolerance (±20%). The original ±20% tolerance can be replaced with ±10% or ±5% without functional impact. Looser tolerance cannot substitute for tighter tolerance requirements.

Q: Does thickness variation affect PCB assembly compatibility?

A: All substitute parts maintain the 1206 (3216 Metric) package format and surface mount compatibility. Thickness variations (0.037" to 0.069") are within standard 1206 package specifications and do not affect PCB assembly, reflow soldering, or mounting procedures.

Q: Can I substitute between X7R and C0G/NP0 parts interchangeably?

A: No. While both are 330 pF 1206 capacitors, the dielectric materials differ. X7R and C0G/NP0 have different temperature coefficients and frequency characteristics. Substitution between dielectric types should be based on specific circuit requirements, not treated as direct equivalents.

Q: Are all substitute parts in active production status?

A: Yes. All listed substitute parts are Active status, indicating current manufacturing and availability. Knowles Syfer 1206J1000331MXT is also Active status.

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