CL10C821KB8NNNC Equivalent & Substitute Parts

Part Overview

The CL10C821KB8NNNC is a 820 pF ±10% 50V ceramic capacitor manufactured by Samsung Electro-Mechanics in the 0603 (1608 Metric) package with C0G/NP0 temperature coefficient. This part is currently Active in product status with 1106 pieces in stock inventory. The component is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand higher tolerance specifications, when voltage rating upgrades are required, or when alternative manufacturers' components offer improved availability or performance characteristics while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Specification Basis
Capacitance	820 pF	Core electrical specification
Tolerance	±10%	Acceptable variance range
Voltage Rating	50V	Minimum rated voltage
Temperature Coefficient	C0G / NP0	Stability requirement
Operating Temperature	-55°C to 125°C	Environmental range
Package / Case	0603 (1608 Metric)	Physical form factor
Mounting Type	Surface Mount, MLCC	Assembly method
RoHS Status	ROHS3 Compliant	Environmental compliance
Moisture Sensitivity Level	MSL 1 (Unlimited)	Handling requirement

Substitute Part Grouping Explanation

Substitution logic for the CL10C821KB8NNNC is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria (Must Match):

Capacitance: 820 pF (exact value required)
Package / Case: 0603 (1608 Metric) (physical compatibility)
Mounting Type: Surface Mount, MLCC (assembly compatibility)
Temperature Coefficient: C0G / NP0 (stability requirement)
Operating Temperature Range: -55°C to 125°C minimum (environmental compatibility)

Secondary Substitution Criteria (Allowable Variations):

Tolerance: ±10% or tighter (±5%, ±1%) are acceptable upgrades
Voltage Rating: 50V minimum; higher ratings (100V) are acceptable upgrades
Manufacturer: Any qualified manufacturer (Samsung Electro-Mechanics, KEMET, TDK Corporation)
Product Status: Active or Last Time Buy acceptable; Obsolete parts listed for reference only
Packaging Format: Cut Tape (CT) or Tape & Reel (TR) both acceptable

Non-Substitutable Parameters:

Capacitance value deviation beyond ±10% tolerance band
Package size different from 0603
Temperature coefficient other than C0G / NP0
Voltage rating below 50V
Operating temperature range below -55°C to 125°C

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Package	Product Status	Inventory
CL10C821KB8NNNC	Samsung Electro-Mechanics	820 pF	±10%	50V	C0G / NP0	0603	Active	1106 Pcs
CL10C821JB8NNNC	Samsung Electro-Mechanics	820 pF	±5%	50V	C0G / NP0	0603	Obsolete	480100 Pcs
C0603C821K5GAC7867	KEMET	820 pF	±10%	50V	C0G / NP0	0603	Active	13128 Pcs
CGJ3E2C0G1H821J080AA	TDK Corporation	820 pF	±5%	50V	C0G / NP0	0603	Obsolete	2056 Pcs
CGJ3E2C0G2A821J080AA	TDK Corporation	820 pF	±5%	100V	C0G / NP0	0603	Obsolete	8301 Pcs
C0603C821F5GAC7867	KEMET	820 pF	±1%	50V	C0G / NP0	0603	Active	19894 Pcs
C0603C821J5GAC7867	KEMET	820 pF	±5%	50V	C0G / NP0	0603	Active	29300 Pcs
C1608C0G1H821J080AA	TDK Corporation	820 pF	±5%	50V	C0G / NP0	0603	Last Time Buy	7368 Pcs
C1608C0G2A821J080AA	TDK Corporation	820 pF	±5%	100V	C0G / NP0	0603	Last Time Buy	4463 Pcs
C1608C0G2A821K080AA	TDK Corporation	820 pF	±10%	100V	C0G / NP0	0603	Last Time Buy	4801 Pcs
C1608NP02A821J080AA	TDK Corporation	820 pF	±5%	100V	C0G / NP0	0603	Last Time Buy	5354 Pcs

Engineering Selection Recommendations

Direct Equivalent (Same Electrical Specifications):

The C0603C821K5GAC7867 (KEMET) is the primary direct equivalent to CL10C821KB8NNNC. Both parts share identical electrical specifications: 820 pF capacitance, ±10% tolerance, 50V voltage rating, and C0G/NP0 temperature coefficient. The KEMET part is currently Active in product status with 13128 pieces in inventory, providing superior availability compared to the Samsung part. Both components are ROHS3 compliant and MSL 1 rated.

Tolerance Upgrade Options (Tighter Tolerance):

For applications requiring improved capacitance accuracy, the following parts provide ±5% tolerance while maintaining all other specifications:

C0603C821J5GAC7867 (KEMET, Active, 29300 Pcs) - 50V rating
C1608C0G1H821J080AA (TDK, Last Time Buy, 7368 Pcs) - 50V rating
CL10C821JB8NNNC (Samsung, Obsolete, 480100 Pcs) - 50V rating

For the highest tolerance specification, C0603C821F5GAC7867 (KEMET, Active, 19894 Pcs) offers ±1% tolerance at 50V.

Voltage Upgrade Options (Higher Voltage Rating):

For applications requiring enhanced voltage margin or operating in higher voltage environments, the following parts provide 100V rating with ±5% tolerance:

C1608C0G2A821J080AA (TDK, Last Time Buy, 4463 Pcs)
CGJ3E2C0G2A821J080AA (TDK, Obsolete, 8301 Pcs)
C1608NP02A821J080AA (TDK, Last Time Buy, 5354 Pcs) - Extended operating temperature to 150°C

For 100V rating with ±10% tolerance, C1608C0G2A821K080AA (TDK, Last Time Buy, 4801 Pcs) is available.

Compliance and Certification:

All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage procedures. No additional handling or environmental controls are required beyond standard component management practices.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with ±5% tolerance instead of ±10%?

A: Yes. A tighter tolerance specification (±5%) is an acceptable upgrade and provides improved capacitance accuracy. The substitute part will perform within the original ±10% tolerance band while offering superior stability. No circuit redesign is required.

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

A: C0G and NP0 designations refer to identical temperature coefficient characteristics. C0G is the EIA designation while NP0 is the IEC designation. Both terms describe zero temperature coefficient behavior across the operating range. Parts marked with either designation are fully interchangeable.

Q: Can I substitute a 100V rated part for the 50V rated CL10C821KB8NNNC?

A: Yes. A higher voltage rating is an acceptable upgrade. The 100V rated substitute will function correctly in circuits designed for 50V operation. The higher voltage rating provides additional safety margin and does not affect circuit performance. Physical dimensions remain identical in the 0603 package.

Q: Are there any differences between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Tape & Reel packaging formats contain identical components with different presentation for assembly automation. Cut Tape is suitable for manual assembly or small-volume production. Tape & Reel format is optimized for high-speed automated pick-and-place equipment. Electrical and mechanical specifications are identical; selection depends on assembly process requirements.

Q: What does "Last Time Buy" product status mean?

A: Last Time Buy indicates the manufacturer has announced end-of-life for the part. Existing inventory is available for purchase, but no future production is planned. Parts with this status should be used for current production needs, but long-term designs should transition to Active status alternatives to ensure future availability.

Q: Why is the CL10C821JB8NNNC listed as Obsolete despite having 480100 pieces in inventory?

A: Obsolete status indicates the manufacturer has discontinued production. The large inventory represents remaining stock from final production runs. While available for immediate purchase, this part should not be selected for new designs. Active status alternatives such as C0603C821J5GAC7867 (KEMET) are preferred for long-term design stability.

Q: Can I mix different manufacturers' parts in the same circuit board?

A: Yes. All listed substitute parts meet identical electrical and mechanical specifications. Mixing Samsung, KEMET, and TDK components in the same assembly is acceptable and does not affect circuit performance. Manufacturing processes differ between suppliers, but all parts are qualified to the same industry standards.

Q: What is the significance of the "Low ESL" feature listed for KEMET parts?

A: Low ESL (Equivalent Series Inductance) indicates optimized internal construction for reduced parasitic inductance. This feature is beneficial for high-frequency applications but does not affect performance in general-purpose DC or low-frequency AC circuits. The feature is an enhancement; its absence in other qualified parts does not indicate inferior performance for standard applications.

Q: Is C1608NP02A821J080AA compatible with the original CL10C821KB8NNNC?

A: Yes, with one enhancement. The C1608NP02A821J080AA is electrically compatible and provides a 100V voltage upgrade. The operating temperature range extends to 150°C (versus 125°C for the original), offering improved performance in elevated temperature environments. All other specifications align with substitution criteria.

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