| Parameters | 
                                    
                                                                                                            
                                        | Mfr | 
                                        Comchip Technology | 
                                    
                                                                        
                                        | Series | 
                                        - | 
                                    
                                                                        
                                        | Package | 
                                        Tape & Reel (TR) | 
                                    
                                                                        
                                        | Product Status | 
                                        Active | 
                                    
                                                                        
                                        | Voltage - Zener (Nom) (Vz) | 
                                        18 V | 
                                    
                                                                        
                                        | Tolerance | 
                                        ±2% | 
                                    
                                                                        
                                        | Power - Max | 
                                        500 mW | 
                                    
                                                                        
                                        | Impedance (Max) (Zzt) | 
                                        42 Ohms | 
                                    
                                                                        
                                        | Current - Reverse Leakage @ Vr | 
                                        45 nA @ 12.6 V | 
                                    
                                                                        
                                        | Voltage - Forward (Vf) (Max) @ If | 
                                        900 mV @ 10 mA | 
                                    
                                                                        
                                        | Operating Temperature | 
                                        -55°C ~ 150°C (TJ) | 
                                    
                                                                        
                                        | Mounting Type | 
                                        Surface Mount | 
                                    
                                                                        
                                        | Package / Case | 
                                        SOD-123 | 
                                    
                                                                        
                                        | Supplier Device Package | 
                                        SOD-123 | 
                                    
                                                                        
                                        | Base Product Number | 
                                        BZT52 | 
                                    
                                                                        
                                        | Moisture Sensitivity Level (MSL) | 
                                        1  (Unlimited) | 
                                    
                                                                        
                                        | ECCN | 
                                        EAR99 | 
                                    
                                                                        
                                        | HTSUS | 
                                        8541.10.0050 | 
                                    
                                                                        
                                        | Other Names | 
                                        641-BZT52B18-HFTR | 
                                    
                                                                        
                                        | Standard Package | 
                                        3,000 | 
                                    
                                                                                                        
                            
                         
                                                Zener Diode 18 V 500 mW ±2% Surface Mount SOD-123