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1.5KE33A
TVS Diode, Transil 1.5KE, Unidirectional, 28.2 V, 45.7 V, DO-201, 2 Pins
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: STMICROELECTRONICS
- Product type: TVS Diodes
- Product Range:Transil 1.5KE Series; TVS Polarity:Unidirectional; Reverse Stand-Off Voltage Vrwm:28.2V; Clamping Voltage Vc Max:45.7V; Diode Case Style:DO-201; No. of Pins:2Pins; Breakdown Voltage
- SVHC: No SVHC (25-Jun-2025)
- No. of Pins: 2Pins
- TVS Polarity: Unidirectional
- Product Range: Transil 1.5KE
- Qualification: -
- Diode Mounting: Through Hole
- Diode Case Style: DO-201
- Clamping Voltage Max: 45.7V
- Reverse Standoff Voltage: 28.2V
- Maximum Breakdown Voltage: 34.7V
- Minimum Breakdown Voltage: 31.4V
- Operating Temperature Max: 175°C
- Peak Pulse Power Dissipation: 1.5kW
| Delivery and price | |
|---|---|
| Units per pack | 1800 |
| Price | 0.214 € |
| Current stock | 1000+ |
| Lead time | 30 days |
Datasheet
**==> picture [61 x 39] intentionally omitted <==** ## **1.5KE** ## Transil™ ## **Datasheet** − **production data** ## **Features** - Peak pulse power: 1500 W (10/1000 µs) - Breakdown voltage range: From 6.8 V to 440 V - Uni and bidirectional types - Low clamping factor - Fast response time - UL 497B file number: QVGQ2.E136224 **==> picture [99 x 115] intentionally omitted <==** **----- Start of picture text -----**<br> A<br>K<br>DO-201<br>**----- End of picture text -----**<br> ## **Description** Transil diodes provide high overvoltage protection by clamping action. Their instantaneous response to transient overvoltages makes them particularly suited to protect voltage sensitive devices such as MOS Technology and low voltage supplied IC’s. **TM:** Transil is a trademarks of STMicroelectronics. 1/10 March 2012 Doc ID 2913 Rev 4 This is information on a product in full production. _www.st.com_ **Characteristics** **1.5KE** ## **1 Characteristics** **Table 1. Absolute maximum ratings (Tamb = 25** °C **)** |**Table 1.**|**Absolute maximum ratings (Tamb = 25**°C**)**|**Absolute maximum ratings (Tamb = 25**°C**)**||| |---|---|---|---|---| |**Symbol**|**Parameter**||**Value**|**Unit**| |PPP|Peak pulse power dissipation(1)|Tj initial= Tamb|1500|W| |P|Power dissipation on infinite heatsink|Tamb= 75 °C|5|W| |IFSM|Non repetitive surge peak forward current for unidirectional<br>types|tp= 10 ms<br>Tj initial= Tamb|200|A| |Tstg|Storage temperature range||-65 to + 175|°C| |Tj|Maximum operating junction temperature||175|°C| |TL|Maximum lead temperature for soldering during 10s at 5mm from case.||230|°C| 1. For a surge greater than the maximum values, the diode will fail in short-circuit. ## **Table 2. Thermal parameter** |**Symbol**|**Parameter**|**Value**|**Unit**| |---|---|---|---| |Rth(j-l)|Junction to leads|20|°C/W| |Rth(j-a)|Junction to ambient on printed circuit. Llead= 10 mm|75|| ## **Figure 1. Electrical characteristics - definitions** **==> picture [321 x 127] intentionally omitted <==** **----- Start of picture text -----**<br> I I<br>IF IPP<br>VRM Stand-off voltage<br>VBR Breakdown voltage Unidirectional<br>VCL Clamping voltage<br>IIIRMPPR Breakdown currentPeak pulse currentLeakage current @ VRM VCLVBR VRM VF V VCLVBR VRM IRMIR V<br>VRαT Voltage temperatureFD Forward voltage dropDynamic impedancecoefficient IRMIR IRMIR VRMVBR VCL<br>Bidirectional<br>IPP IPP<br>**----- End of picture text -----**<br> 2/10 Doc ID 2913 Rev 4 **Characteristics** **1.5KE** **Table 3. Electrical characteristics - parameter values (Tamb = 25 °C)** |**Order code**|**IRM @ VRM**<br>**max.**|**IRM @ VRM**<br>**max.**|**VBR @ IR**<br>**(1)**<br>**max. nom.**<br>**min.**|**VBR @ IR**<br>**(1)**<br>**max. nom.**<br>**min.**|**VBR @ IR**<br>**(1)**<br>**max. nom.**<br>**min.**|**VBR @ IR**<br>**(1)**<br>**max. nom.**<br>**min.**|**VCL @ IPP**<br>**10/1000 µs**<br>**max.**|**VCL @ IPP**<br>**10/1000 µs**<br>**max.**|**VCL @ IPP**<br>**8/20 µs**<br>**max.**|**VCL @ IPP**<br>**8/20 µs**<br>**max.**|α**T(2)**<br>**max.**|**C(3)**<br>**typ.**| |---|---|---|---|---|---|---|---|---|---|---|---|---| ||**µA**|**V**|**V**|**V**|**V**|**mA**|**V**|**A**|**V**|**A**|**10-4/ °C**|**pF**| |1.5KE6V8A/CA|1000|5.8|6.45|6.8|7.14|10|10.5|143|13.4|746|5.7|9500| |1.5KE7V5A/CA|500|6.4|7.13|7.5|7.88|10|11.3|132|14.5|690|6.1|8500| |1.5KE10A/CA|10|8.55|9.5|10|10.5|1|14.5|100|18.6|538|7.3|7000| |1.5KE12A/CA|5|10.2|11.4|12|12.6|1|16.7|90|21.7|461|7.8|6000| |1.5KE15A/CA|1|12.8|14.3|15|15.8|1|21.2|71|27.2|368|8.4|5000| |1.5KE18A/CA|1|15.3|17.1|18|18.9|1|25.2|59.5|32.5|308|8.8|4300| |1.5KE22A/CA|1|18.8|20.9|22|23.1|1|30.6|49|39.3|254|9.2|3700| |1.5KE24A/CA|1|20.5|22.8|24|25.2|1|33.2|45|42.8|234|9.4|3500| |1.5KE27A/CA|1|23.1|25.7|27|28.4|1|37.5|40|48.3|207|9.6|3200| |1.5KE30A/CA|1|25.6|28.5|30|31.5|1|41.5|36|53.5|187|9.7|2900| |1.5KE33A/CA|1|28.2|31.4|33|34.7|1|45.7|33|59.0|169|9.8|2700| |1.5KE36A/CA|1|30.8|34.2|36|37.8|1|49.9|30|64.3|156|9.9|2500| |1.5KE39A/CA|1|33.3|37.1|39|41.0|1|53.9|28|69.7|143|10.0|2400| |1.5KE47A/CA|1|40.2|44.7|47|49.4|1|64.8|23.2|84|119|10.1|2050| |1.5KE56A/CA|1|47.8|53.2|56|58.8|1|77|19.5|100|100|10.3|1800| |1.5KE62A/CA|1|53.0|58.9|62|65.1|1|85|17.7|111|90|10.4|1700| |1.5KE68A/CA|1|58.1|64.6|68|71.4|1|92|16.3|121|83|10.4|1550| |1.5KE82A/CA|1|70.1|77.9|82|86.1|1|113|13.3|146|69|10.5|1350| |1.5KE100A/CA|1|85.5|95.0|100|105|1|137|11|178|56|10.6|1150| |1.5KE120A/CA|1|102|114|120|126|1|165|9.1|212|47|10.7|1000| |1.5KE150A/CA|1|128|143|150|158|1|207|7.2|265|38|10.8|850| |1.5KE180A/CA|1|154|171|180|189|1|246|6.1|317|31.5|10.8|725| |1.5KE200A/CA|1|171|190|200|210|1|274|5.5|353|28|10.8|675| |1.5KE220A/CA|1|188|209|220|231|1|328|4.6|388|26|10.8|625| |1.5KE250A/CA|1|213|237|250|263|1|344|5.0|442|23|11|560| |1.5KE300A/CA|1|256|285|300|315|1|414|5.0|529|19|11|500| |1.5KE350A/CA|1|299|332|350|368|1|482|4.0|618|16|11|430| |1.5KE400A/CA|1|342|380|400|420|1|548|4.0|706|14|11|390| |1.5KE440A/CA|1|376|418|440|462|1|603|3.5|776|13|11|360| 1. Pulse test: tp < 50 ms (see _Figure 2_ ) 2. ΔVBR = αT × (Tamb - 25) × VBR(25 °C) 3. VR = 0 V, F = 1 MHz. For bidirectional types, capacitance value is divided by 2. 3/10 Doc ID 2913 Rev 4 **Characteristics** **1.5KE** **Figure 2. Pulse definition for electrical characteristics** **==> picture [178 x 89] intentionally omitted <==** **----- Start of picture text -----**<br> % Ipp<br>Repetitive pulse current<br>100 tr = rise time (µs)<br>tp = pulse duration time (µs)<br>50<br>0<br>tr tp<br>**----- End of picture text -----**<br> ## **Figure 3. Peak pulse power dissipation versus initial junction temperature (printed circuit board)** **==> picture [192 x 132] intentionally omitted <==** **----- Start of picture text -----**<br> 100%<br>Peak power<br>80% (on printed circuit)<br>60%<br>40 %<br>20 %<br>Tj initial<br>0 %<br>0 20 40 60 80 100 120 140 160 180 200<br>**----- End of picture text -----**<br> **Figure 4. Peak pulse power versus exponential pulse duration** **==> picture [176 x 139] intentionally omitted <==** **Figure 5. Clamping voltage versus peak Figure 6. Capacitance versus reverse applied pulse current voltage for unidirectional types (typical values)** **==> picture [462 x 147] intentionally omitted <==** **----- Start of picture text -----**<br> vcl (v) C (pF)<br>1000<br>1.5KE440A % Ipp 10000<br>100 T j initial = 25°C Tj = 25 °C<br>1.5KE220A 50 F = 1 MHz<br>1.5KE100A 0 tr tp tr <10µs<br>100<br>1.5KE56A 1000<br>1.5KE22A<br>1.5KE12A<br>100<br>10 1.5KE6V8A<br>tp = 20 µs<br>tp = 1 ms<br>tp = 10 ms Ipp (A) 10<br>1<br>0.1 1 10 100 1000 1 10 100 500<br>1.5KE<br>7V5<br>1.5KE 15<br>1.5KE 68<br>1.5KE 100<br>**----- End of picture text -----**<br> The curves of _Figure 5_ are specified for a junction temperature of 25 °C before surge. The given results may be extrapolated for other junction temperatures by using the following formula: ΔVBR = αT × (Tamb - 25) × VBR (25 °C). For intermediate voltages, extrapolate the given results. 4/10 Doc ID 2913 Rev 4 **Characteristics** **1.5KE** **Figure 7. Capacitance versus reverse applied Figure 8. Peak forward voltage drop versus voltage for bidirectional types peak forward current (typical values (typical values) for unidirectional types)** **==> picture [192 x 136] intentionally omitted <==** **----- Start of picture text -----**<br> 10000<br>F<br>1000<br>100<br>10<br>1 10 100 500<br>**----- End of picture text -----**<br> **==> picture [175 x 136] intentionally omitted <==** **----- Start of picture text -----**<br> IFM (A)<br>500<br>Multiply by 2 for units with VBR > 220 V<br>100<br>10<br>VFM (V)<br>1<br>0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5<br>**----- End of picture text -----**<br> ## **Figure 9. Transient thermal impedance junction-ambient versus pulse duration** **==> picture [197 x 138] intentionally omitted <==** **----- Start of picture text -----**<br> Zth (j-a) (°C/W)<br>100<br>Epoxy printed circuit board, FR4<br>copper thickness = 35 µm<br>10<br>1<br>tp (s)<br>0.1<br>0.01 0.1 1 10 100 1000<br>**----- End of picture text -----**<br> **Figure 10. Relative variation of leakage current versus junction temperature** **==> picture [193 x 123] intentionally omitted <==** 5/10 Doc ID 2913 Rev 4 **Ordering information scheme** **1.5KE** ## **2 Ordering information scheme** **==> picture [198 x 11] intentionally omitted <==** **----- Start of picture text -----**<br> Figure 11. Ordering information scheme<br>**----- End of picture text -----**<br> **==> picture [302 x 184] intentionally omitted <==** **----- Start of picture text -----**<br> 1.5 KE 100 CA - RL<br>Peak pulse power<br>1.5 = 1500 W<br>Breakdown voltage<br>100 = 100 V<br>Type<br>A = Unidirectional<br>CA = Bidirectional<br>Delivery mode<br>blank = Ammopack<br>RL = Tape and reel<br>**----- End of picture text -----**<br> 6/10 Doc ID 2913 Rev 4 **Package information** **1.5KE** ## **3 Package information** - Epoxy meets UL94, V0 - Lead-free package In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK[®] packages, depending on their level of environmental compliance. ECOPACK[®] specifications, grade definitions and product status are available at: www.st.com. ECOPACK[®] is an ST trademark. **Table 4. DO-201 dimensions** ||||||**Ref.**|**dimensions**|**dimensions**|**dimensions**|**dimensions**| |---|---|---|---|---|---|---|---|---|---| ||**B**|**A**||**B**||**Millimeters**||**Inches**|| ||||||||||| |||||||**Min.**|**Max.**|**Min.**|**Max.**| ||**Ø**<br>**ØD**||||||||| |||**C**|||A|8.5|9.5|0.335|0.374| ||||||B|25.4||1|| ||||||||||| ||||||Ø C|4.8|5.3|0.189|0.209| ||||||||||| ||||||Ø D|0.96|1.06|0.038|0.042| 7/10 Doc ID 2913 Rev 4 **Package information** **1.5KE** **Table 5. Marking** |**Order code**|**Marking(1)**||**Order code**|**Marking(1)**|| |---|---|---|---|---|---| |1.5KE6V8A|1.5KE 6V8A|1.5KE6V8A|1.5KE6V8CA|1.5KE 6V8CA|1.5KE6V8CA| |1.5KE7V5A|1.5KE 7V5A|1.5KE7V5A|1.5KE7V5CA|1.5KE 7V5CA|1.5KE7VCA5| |1.5KE10A|1.5KE 10A|1.5KE10A|1.5KE10CA|1.5KE 10CA|1.5KE10CA| |1.5KE12A|1.5KE 12A|1.5KE12A|1.5KE12CA|1.5KE 12CA|1.5KE12CA| |1.5KE15A|1.5KE 15A|1.5KE15A|1.5KE15CA|1.5KE 15CA|1.5KE15CA| |1.5KE18A|1.5KE 18A|1.5KE18A|1.5KE18CA|1.5KE 18CA|1.5KE18CA| |1.5KE22A|1.5KE 22A|1.5KE22A|1.5KE22CA|1.5KE 22CA|1.5KE22CA| |1.5KE24A|1.5KE 24A|1.5KE24A|1.5KE24CA|1.5KE 24CA|1.5KE24CA| |1.5KE27A|1.5KE 27A|1.5KE27A|1.5KE27CA|1.5KE 27CA|1.5KE27CA| |1.5KE30A|1.5KE 30A|1.5KE30A|1.5KE30CA|1.5KE 30CA|1.5KE30CA| |1.5KE33A|1.5KE 33A|1.5KE33A|1.5KE33CA|1.5KE 33CA|1.5KE33CA| |1.5KE36A|1.5KE 36A|1.5KE36A|1.5KE36CA|1.5KE 36CA|1.5KE36CA| |1.5KE39A|1.5KE 39A|1.5KE39A|1.5KE39CA|1.5KE 39CA|1.5KE39CA| |1.5KE47A|1.5KE 47A|1.5KE47A|1.5KE47CA|1.5KE 47CA|1.5KE47CA| |1.5KE56A|1.5KE 56A|1.5KE56A|1.5KE56CA|1.5KE 56CA|1.5KE56CA| |1.5KE62A|1.5KE 62A|1.5KE62A|1.5KE62CA|1.5KE 62CA|1.5KE62CA| |1.5KE68A|1.5KE 68A|1.5KE68A|1.5KE68CA|1.5KE 68CA|1.5KE68CA| |1.5KE82A|1.5KE 82A|1.5KE82A|1.5KE82CA|1.5KE 82CA|1.5KE82CA| |1.5KE100A|1.5KE 100A|1.5KE100A|1.5KE100CA|1.5KE 100CA|1.5KE100CA| |1.5KE120A|1.5KE 120A|1.5KE120A|1.5KE120CA|1.5KE 120CA|1.5KE120CA| |1.5KE150A|1.5KE 150A|1.5KE150A|1.5KE150CA|1.5KE 150CA|1.5KE150CA| |1.5KE180A|1.5KE 180A|1.5KE180A|1.5KE180CA|1.5KE 180CA|1.5KE180CA| |1.5KE200A|1.5KE 200A|1.5KE200A|1.5KE200CA|1.5KE 200CA|1.5KE200CA| |1.5KE220A|1.5KE 220A|1.5KE220A|1.5KE220CA|1.5KE 220CA|1.5KE220CA| |1.5KE250A|1.5KE 250A|1.5KE250A|1.5KE250CA|1.5KE 250CA|1.5KE250CA| |1.5KE300A|1.5KE 300A|1.5KE300A|1.5KE300CA|1.5KE 300CA|1.5KE300CA| |1.5KE350A|1.5KE 350A|1.5KE350A|1.5KE350CA|1.5KE 350CA|1.5KE350CA| |1.5KE400A|1.5KE 400A|1.5KE400A|1.5KE400CA|1.5KE 400CA|1.5KE400CA| |1.5KE440A|1.5KE 440A|1.5KE440A|1.5KE440CA|1.5KE 440CA|1.5KE440CA| 1. Marking with space is used to differentiate assembly location. 8/10 Doc ID 2913 Rev 4 **Ordering information** **1.5KE** ## **4 Ordering information** |**Table 6.**<br>**Order codes**|**Table 6.**<br>**Order codes**|**Table 6.**<br>**Order codes**|**Table 6.**<br>**Order codes**||| |---|---|---|---|---|---| |**Order code**|**Marking**|**Package**|**Weight**|**Base qty**|**Delivery mode**| |1.5KExxxA/CA(1)|See_Table 5_|1.5KE|0.876g|1900|Tape and reel| |||||600|Ammopack| 1. Where xxx is nominal value of VBR and A or CA indicates unidirectional or bidirectional version. See _Table 3_ for list of available devices and their order codes ## **5 Revision history** ## **Table 7. Document revision history** |**Date**|**Revision**|**Changes**| |---|---|---| |Feb -2002|3A|Last issue| |12-Mar-2012|4|Added UL statement,_Table 5_and ordering information.| 9/10 Doc ID 2913 Rev 4 **1.5KE** ## **Please Read Carefully:** Information in this document is provided solely in connection with ST products. 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All other names are the property of their respective owners. © 2012 STMicroelectronics - All rights reserved ## STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America **www.st.com** 10/10 Doc ID 2913 Rev 4
Updated at June 5, 2026
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