SEMITEC Voltage Regulating Diode (VRD) 
										is a transient voltage suppressor device 
										that is designed to absorb voltage 
										surges and spikes that occur during 
										power initiation. Our VRD features 
										uniform avalanche breakdown across the 
										junction, enabling very fast response to 
										surge voltage.
										Furthermore its control voltage is 
										almost independent from the current 
										which makes it a highly reliable, high 
										performance device.
 
									
 
								 
								
									
									Applications
									
									- Protection of telecommunications line and 
									equipment from lightning-induced surges 
									- ESD protection
									- EMP protection
									- Relays, solenoids, etc., switching surge 
									protection
									- Surge protection of fire alarms, smoke 
									detectors, etc.
									- Protection of electric circuits from 
									abnormal voltage conditions
 
								
									
									Z2U Type
									
										
										Specifications
										
											
												| Item | Symbol | Rating | Unit | Condition | 
											
												| Rated power | P | 1.0 | W |  | 
											
												| Allowable transient power | PP | 500 | W | 10/1000μs | 
											
												| 2000 | W | 1.2/50μs | 
											
												| 6000 | W | 8/20μs | 
											
												| Operating temperature range |  | -40〜125 | ℃ |  | 
											
												| Storage temperature range | Tstg | -40〜130 | ℃ |  | 
											
												| Rated voltage | Vs | Please see below. | 
										
										
										(Ta=25℃)
 
									
									Dimensions
									
										
 
									
										
										Electrical Characteristics
										
											
												| Part No. | Item | Breakdown voltage | Rated voltage | Maximum Leakage current | Maximum clamping voltage & 
												maximum peak pulse current | Temperature coefficient (TYP) | Capacitance (TYP) | 
											
												| Symbol | VB | Vs | ILmax | Vcmax/Ipp |  | C | 
											
												| Condition | It=1mA | D.C. | Vs | 10/1000μs | 8/20μs | 25℃〜50℃ |  | 
											
												| Unit | V | V | μA | V | A | V | A | %/℃ | pF | 
											
												| Z2008U | 8.2(7.38〜 9.02) | 6.63 | 500 | 12.5 | 40.0 | 16.3 | 372 | 0.063 | 2400 | 
											
												| Z2010U | 10(9.00〜 11.0) | 8.10 | 20 | 15.0 | 33.4 | 19.5 | 311 | 0.071 | 1900 | 
											
												| Z2012U | 12(10.8〜 13.2) | 9.72 | 5 | 17.3 | 28.9 | 22.7 | 267 | 0.074 | 1580 | 
											
												| Z2015U | 15(13.5〜 16.5) | 12.1 | 22.0 | 22.7 | 28.4 | 213 | 0.079 | 1280 | 
											
												| Z2018U | 18(16.2〜 19.8) | 14.5 | 26.5 | 18.8 | 34.0 | 178 | 0.083 | 1040 | 
											
												| Z2022U | 22(19.8〜 24.2) | 17.8 | 31.9 | 15.7 | 41.2 | 147 | 0.086 | 840 | 
											
												| Z2027U | 27(24.3〜 29.7) | 21.8 | 39.1 | 12.8 | 50.5 | 120 | 0.089 | 680 | 
											
												| Z2033U | 33(29.7〜 36.3) | 26.8 | 47.7 | 10.5 | 61.7 | 98.2 | 0.092 | 560 | 
											
												| Z2039U | 39(35.1〜 42.9) | 31.6 | 56.4 | 8.86 | 73.0 | 83.0 | 0.095 | 480 | 
											
												| Z2047U | 47(42.3〜 51.7) | 38.1 | 67.8 | 7.37 | 88.0 | 68.9 | 0.097 | 400 | 
											
												| Z2056U | 56(50.4〜 61.6) | 45.4 | 80.5 | 6.21 | 105 | 57.7 | 0.099 | 320 | 
											
												| Z2068U | 68(61.2〜 74.8) | 55.1 | 98.0 | 5.10 | 127 | 47.7 | 0.100 | 260 | 
											
												| Z2082U | 82(73.8〜 90.2) | 66.4 | 118 | 4.24 | 153 | 39.6 | 0.102 | 220 | 
											
												| Z2100U | 100(90.0〜110) | 81.0 | 144 | 3.47 | 187 | 32.4 | 0.104 | 180 | 
											
												| Z2120U | 120(108 〜132) | 97.2 | 173 | 2.89 | 222 | 27.3 | 0.106 | 150 | 
											
												| Z2150U | 150(135 〜165) | 121 | 215 | 2.32 | 277 | 21.9 | 0.107 | 120 | 
											
												| Z2180U | 180(162 〜198) | 146 | 258 | 1.94 | 333 | 18.2 | 0.108 | 98 | 
										
										
										※Z2008UについてはIt=10mA (Ta=25℃)
 
								 
								
									
									Z6U Type
									
										
										Specifications
										
											
												| Item | Symbol | Rating | Unit | Condition | 
											
												| Rated power | P | 2.0 | W |  | 
											
												| Allowable transient power | PP | 1500 | W | 10/1000μs | 
											
												| 6000 | W | 1.2/50μs | 
											
												| 18000 | W | 8/20μs | 
											
												| Operating temperature range |  | -40〜125 | ℃ |  | 
											
												| Storage temperature range | Tstg | -40〜130 | ℃ |  | 
											
												| Rated voltage | Vs | Please see below. | 
										
										
										(Ta=25℃)
 
									
									Dimensions
									
										
 
									
										
										Electrical Characteristics
										
											
												| Part No. | Item | Breakdown voltage | Rated voltage | Maximum Leakage current | Maximum clamping voltage & 
												maximum peak pulse current | Temperature coefficient (TYP) | Capacitance (TYP) | 
											
												| Symbol | VB | Vs | ILmax | Vcmax/Ipp |  | C | 
											
												| Condition | It=1mA | D.C. | Vs | 10/1000μs | 8/20μs | 25℃〜50℃ |  | 
											
												| Unit | V | V | μA | V | A | V | A | %/℃ | pF | 
											
												| Z6012U | 12(10.8〜 13.2) | 9.72 | 5 | 17.3 | 86.7 | 22.7 | 802 | 0.074 | 8800 | 
											
												| Z6015U | 15(13.5〜 16.5) | 12.1 | 22.0 | 68.2 | 28.4 | 641 | 0.079 | 6600 | 
											
												| Z6018U | 18(16.2〜 19.8) | 14.5 | 26.5 | 56.6 | 34.0 | 535 | 0.083 | 5400 | 
											
												| Z6022U | 22(19.8〜 24.2) | 17.8 | 31.9 | 47.0 | 41.2 | 442 | 0.086 | 4400 | 
											
												| Z6027U | 27(24.3〜 29.7) | 21.8 | 39.1 | 38.4 | 50.5 | 360 | 0.089 | 3300 | 
											
												| Z6033U | 33(29.7〜 36.3) | 26.8 | 47.7 | 31.4 | 61.7 | 295 | 0.092 | 2800 | 
											
												| Z6039U | 39(35.1〜 42.9) | 31.6 | 56.4 | 26.6 | 73.0 | 249 | 0.095 | 2400 | 
											
												| Z6047U | 47(42.3〜 51.7) | 38.1 | 67.8 | 22.1 | 88.0 | 207 | 0.097 | 2000 | 
											
												| Z6056U | 56(50.4〜 61.6) | 45.4 | 80.5 | 18.6 | 105 | 173 | 0.099 | 1700 | 
											
												| Z6068U | 68(61.2〜 74.8) | 55.1 | 98.0 | 15.3 | 127 | 143 | 0.100 | 1440 | 
											
												| Z6082U | 82(73.8〜 90.2) | 66.4 | 118 | 12.7 | 153 | 119 | 0.102 | 1220 | 
											
												| Z6100U | 100(90.0〜110) | 81.0 | 144 | 10.4 | 187 | 97.3 | 0.104 | 1040 | 
											
												| Z6120U | 120(108 〜132) | 97.2 | 173 | 8.67 | 222 | 82.0 | 0.106 | 880 | 
											
												| Z6150U | 150(135 〜165) | 121 | 215 | 6.98 | 277 | 65.7 | 0.107 | 720 | 
										
										
										Z6008U: It = 10mA (Ta = 25℃)