Part Number : SMAJ20CA
Function : transient voltage suppressor. VRWM = 20 V. Test current IT = 1 mA.
Package : Surface mount
Maker : Diodes Incorporated.
Pinouts : 
Features
• 400W Peak Pulse Power Dissipation
• Glass Passivated Die Construction
• Unidirectional and Bidirectional Versions Available
• Excellent Clamping Capability
• Fast Response Time
• Lead Free Finish/RoHS Compliant
• Green Molding Compound (No Halogen and Antimony)
Mechanical Data
1. Case: SMA
2. Case Material: Molded Plastic. UL Flammability Classification Rating 94V-0
3. Moisture Sensitivity: Level 1 per J-STD-020
4. Terminals: Lead-Free Plating (Matte Tin Finish).
Datasheet PDF Download : 
Others datasheet of same file :
SMAJ10(C)A, SMAJ100(C)A, SMAJ100A, SMAJ100CA, SMAJ10A, MAJ5.0A