Surface Mount Type

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 devices. SEMITEC’S VRD series is fully compliant with RoHS DIRECTIVE2011/65/EU.

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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

ZS Type (Bi-Polar SMD Type)

Specifications

Item Symbol Rating unit Condition
Rated power P 1.0 W Glass-epoxy board mount
Allowable transient power PP 300 W 10/1000μs
1200 W 1.2/50μs
2000 W 8/20μs
Bonding temperature Tj -40〜150  
Storage temperature range Tstg -40〜150  
Rated voltage Vs Please see below.
Peak reverse voltage VPRV 200 V It=10μA

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
ZS1012 12(10.8〜13.2) 9.72 10 17.3 17.3 22.4 89.3 0.066 551
ZS1015 15(13.5〜16.5) 12.1 5 22.0 13.6 28.5 70.2 0.075 465
ZS1018 18(16.2〜19.8) 14.5 26.5 11.3 34.4 58.1 0.079 376
ZS1022 22(19.8〜24.2) 17.8 31.9 9.40 41.4 48.3 0.082 299
ZS1027 27(24.3〜29.7) 21.8 39.1 7.67 50.7 39.4 0.085 248
ZS1033 33(29.7〜36.3) 26.8 47.7 6.29 61.8 32.4 0.087 198
ZS1039 39(35.1〜42.9) 31.6 56.4 5.32 73.1 27.4 0.090 164
ZS1047 47(42.3〜51.7) 38.1 67.8 4.42 88.0 22.7 0.092 137

(Ta=25℃)

ZSD Type (Low Capacitance Type)

Specifications

Item Symbol Rating Unit Condition
Rated power P 1.0 W Glass-epoxy board mount
Allowable transient power PP 300 W 10/1000μs
1200 W 1.2/50μs
2000 W 8/20μs
Bonding temperature Tj -40〜150  
Storage temperature range Tstg -40〜150  
Rated voltage Vs Please see below.
Peak reverse voltage VPRV 200 V It=10μA

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
ZS1012U 12(10.8〜13.2) 9.72 10 17.3 17.3 22.4 89.3 0.066 1102
ZS1015U 15(13.5〜16.5) 12.1 5 22.0 13.6 28.5 70.2 0.075 929
ZS1018U 18(16.2〜19.8) 14.5 26.5 11.3 34.4 58.1 0.079 751
ZS1022U 22(19.8〜24.2) 17.8 31.9 9.40 41.4 48.3 0.082 598
ZS1027U 27(24.3〜29.7) 21.8 39.1 7.67 50.7 39.4 0.085 497
ZS1033U 33(29.7〜36.3) 26.8 47.7 6.29 61.8 32.4 0.087 395
ZS1039U 39(35.1〜42.9) 31.6 56.4 5.32 73.1 27.4 0.090 328
ZS1047U 47(42.3〜51.7) 38.1 67.8 4.42 88.0 22.7 0.092 274

(Ta=25℃)

ZSD Type (Low Capacitance Type)

Specifications

Item Symbol Rating Unit Condition
Rated power P 1.0 W Glass-epoxy board mount
Allowable transient power PP 300 W 10/1000μs
1200 W 1.2/50μs
2000 W 8/20μs
Bonding temperature Tj -40〜150  
Storage temperature range Tstg -40〜150  
Rated voltage Vs Please see below.
Peak reverse voltage VPRV 200 V It=10μA

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
ZS1012D 12(10.8〜13.2) 9.72 10 17.3 17.3 22.4 89.3 0.066 30.2
ZS1015D 15(13.5〜16.5) 12.1 5 22.0 13.6 28.5 70.2 0.075 29.1
ZS1018D 18(16.2〜19.8) 14.5 26.5 11.3 34.4 58.1 0.079 28.2
ZS1022D 22(19.8〜24.2) 17.8 31.9 9.40 41.4 48.3 0.082 27.3
ZS1027D 27(24.3〜29.7) 21.8 39.1 7.67 50.7 39.4 0.085 26.4
ZS1033D 33(29.7〜36.3) 26.8 47.7 6.29 61.8 32.4 0.087 25.5
ZS1039D 39(35.1〜42.9) 31.6 56.4 5.32 73.1 27.4 0.090 24.8
ZS1047D 47(42.3〜51.7) 38.1 67.8 4.42 88.0 22.7 0.092 24.0

(Ta=25℃)