CKC21X333KCGAC7800
The term you're referring to is CAP CER, which stands for Ceramic Capacitor. It's a type of capacitor that uses ceramic materials in its construction.
Product Specifications:
Base Product Number
GCE21BR72A
Manufacturer
Murata Electronics
Moisture Sensitivity Level (MSL)
1 (Unlimited)
Other Names
490-GCE21BR72A822KA01K | 490-GCE21BR72A822KA01KTR | 490-GCE21BR72A822KA01K
REACH Status
REACH Unaffected
RoHS Status
ROHS3 Compliant