CL21B683KBFNNNG Ceramic Capacitor 0.068µF 50V X7R 0805

Part Overview

The CL21B683KBFNNNG is a 0.068 µF ceramic capacitor manufactured by Samsung Electro-Mechanics, rated for 50V with X7R temperature coefficient in 0805 (2012 Metric) surface mount package. This component is in Active product status with 921 units in stock. Alternative equivalent and substitute parts are available from multiple manufacturers to support design flexibility, supply chain continuity, and specific application requirements such as enhanced tolerance or higher voltage ratings.

Substiute Parts

CL21B683KBFNNNG

Samsung Electro-MechanicsIn Stock: 969CL21B683KBFNNNG Datasheet

Current PartRFQ

C0805C683K5RAC7800

KEMETIn Stock: 24941C0805C683K5RAC7800 Datasheet

DirectRFQ

KGM21NR71H683KT

KYOCERA AVXIn Stock: 58899KGM21NR71H683KT Datasheet

DirectRFQ

C0805C683J5RAC7800

KEMETIn Stock: 14502C0805C683J5RAC7800 Datasheet

UpgradeRFQ

C0805C683K1RAC7800

KEMETIn Stock: 13700C0805C683K1RAC7800 Datasheet

UpgradeRFQ

C2012X7R2A683K085AA

TDK CorporationIn Stock: 9944C2012X7R2A683K085AA Datasheet

UpgradeRFQ

KGM21NR71H683JT

KYOCERA AVXIn Stock: 14731KGM21NR71H683JT Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CL21B683KBFNNNG is based on strict electrical and mechanical parameter compatibility:

Direct Equivalents (Identical Electrical Specifications): Direct substitutes maintain identical capacitance (0.068 µF), tolerance (±10%), voltage rating (50V), and temperature coefficient (X7R). These parts are functionally interchangeable in the same circuit applications without design modifications.

Key Substitution Parameters:

• Capacitance: 0.068 µF (exact match required)
• Tolerance: ±10% (direct equivalents) or ±5% (upgraded tolerance)
• Voltage Rating: 50V (direct equivalents) or ≥50V (upgraded voltage)
• Temperature Coefficient: X7R (required for all substitutes)
• Package: 0805 (2012 Metric) (required for all substitutes)
• Mounting Type: Surface Mount, MLCC (required for all substitutes)

Upgraded Specifications: Upgraded substitutes offer enhanced tolerance (±5%) or higher voltage rating (100V) while maintaining the same capacitance value and X7R temperature coefficient. These upgrades provide improved performance margins in applications requiring tighter tolerance control or higher voltage headroom.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommended Substitutes: C0805C683K5RAC7800 (KEMET) and KGM21NR71H683KT (KYOCERA AVX) are equivalent direct substitutes with identical electrical specifications and Active product status. Both are ROHS3 Compliant and REACH Unaffected, suitable for new designs requiring standard ±10% tolerance and 50V rating.

Upgraded Tolerance Option: C0805C683J5RAC7800 (KEMET) provides ±5% tolerance instead of ±10% while maintaining 50V rating and Active status. This upgrade is applicable where circuit design requires tighter capacitance tolerance.

Upgraded Voltage Option: C0805C683K1RAC7800 (KEMET) provides 100V rating with ±10% tolerance and Active product status. This upgrade is applicable where circuit design requires enhanced voltage headroom above the nominal 50V requirement.

Legacy Substitutes: C2012X7R2A683K085AA (TDK Corporation) is marked "Not For New Designs" despite meeting electrical specifications. This part remains available as an alternative for legacy system maintenance or replacement applications where existing inventories are referenced.

All recommended substitutes are ROHS3 Compliant, REACH Unaffected, and classified as MSL 1 (Unlimited), matching the environmental and regulatory compliance of the original part.

Frequently Asked Questions (FAQ)

Q: Can I directly swap the CL21B683KBFNNNG with C0805C683K5RAC7800? A: Yes. Both parts share identical electrical specifications: 0.068 µF capacitance, ±10% tolerance, 50V rating, and X7R temperature coefficient. The 0805 (2012 Metric) package footprint is mechanically compatible. The primary difference is thickness: CL21B683KBFNNNG at 1.35mm maximum versus C0805C683K5RAC7800 at 1.00mm maximum, which may affect PCB assembly clearances in height-constrained designs.

Q: What is the difference between ±10% and ±5% tolerance parts? A: Tolerance specifies the permissible deviation of actual capacitance from the nominal 0.068 µF value. ±10% allows deviation from 0.0612 µF to 0.0748 µF, while ±5% allows deviation from 0.0646 µF to 0.0714 µF. Designs requiring precise capacitance values for filtering or timing circuits benefit from ±5% tolerance parts such as C0805C683J5RAC7800 or KGM21NR71H683JT.

Q: When should I select a 100V-rated part instead of 50V? A: Select 100V-rated parts (C0805C683K1RAC7800 or C2012X7R2A683K085AA) when circuit design includes voltage surges, transient overvoltages, or safety margins beyond the nominal 50V supply. Higher voltage ratings improve component reliability under voltage stress conditions.

Q: Are all listed substitutes suitable for new designs? A: No. C2012X7R2A683K085AA (TDK Corporation) is marked "Not For New Designs" and should not be selected for new product development. Select from Active-status parts: C0805C683K5RAC7800, KGM21NR71H683KT, C0805C683J5RAC7800, C0805C683K1RAC7800, or KGM21NR71H683JT for new designs.

Q: Do all substitutes meet the same environmental compliance standards? A: Yes. All listed parts are ROHS3 Compliant and REACH Unaffected with MSL 1 (Unlimited) moisture sensitivity, matching the compliance profile of the original CL21B683KBFNNNG.

Q: What is the significance of 0805 (2012 Metric) package designation? A: The 0805 (2012 Metric) package specifies the component dimensions: 0.079" L × 0.049" W (2.00mm × 1.25mm). All listed substitutes use this identical package, ensuring PCB footprint compatibility. Thickness variations do occur across manufacturers and voltage ratings, which may affect assembly clearances for components mounted directly adjacent to this part.