# TVS Diode, Transil SM6T, Bidirectional, 213 V, 400 V, DO-214AA (SMB), 2 Pins
**URL**: https://novapart.co/products/SM6T250CAY/tvs-diode-transil-sm6t-bidirectional-213-v-400-do
**SKU**: SM6T250CAY
**Manufacturer**: STMICROELECTRONICS
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Diodes
**Price**: €0.1370
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| No. Of Pins | 2Pins |
| Tvs Polarity | Bidirectional |
| Product Range | Transil SM6T |
| Diode Mounting | Surface Mount |
| Diode Case Style | DO-214AA (SMB) |
| Clamping Voltage Max | 400V |
| Reverse Standoff Voltage | 213V |
| Maximum Breakdown Voltage | 263V |
| Minimum Breakdown Voltage | 237V |
| Operating Temperature Max | 150°C |
| Peak Pulse Power Dissipation | 600W |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2522918/)
## **SM6T250CAY**
## Automotive 600 W Transil™
**Datasheet** - **production data**
## **Complies with the following standards**
- IEC 61000-4-2 exceeds level 4:
- 30 kV (air discharge)
- 30 kV (contact discharge)
- ISO 10605, C = 330 pF, R = 330 Ω exceeds level 4 :
- 30 kV (air discharge)
- 30 kV (contact discharge)
- ISO 7637-2
## **Description**
## **Features**
- Peak pulse power:
- 600 W (10/1000 µs)
- 4 kW (8/20 µs)
- Stand-off voltage 213 V
- Bidirectional type
- Low leakage current: – 200 nA at 25 °C
The SM6T250CAY Transil series has been designed to protect sensitive automotive circuits against surges defined in ISO 7637-2 and against electrostatic discharges according to IEC 610004-2 and ISO 10605.
The planar technology makes this device compatible with high-end circuits where low leakage current and high junction temperature are required to provide reliability and stability over time. SM6T250CAY is packaged in SMB (SMB footprint in accordance with IPC 7531 standard).
- 1 µA at 85 °C
- Operating Tj max: 175 °C
- High power capability at Tj max
- JEDEC registered package outline
- Resin meets UL 94, V0
- AEC-Q101 qualified
**TM** : Transil is a trademark of STMicroelectronics
April 2015
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This is information on a product in full production.
_www.st.com_
**Characteristics**
**SM6T250CAY**
## **1 Characteristics**
**Table 1. Absolute maximum ratings (Tamb = 25 °C)**
|**Symbol**|**Parameter**|**Parameter**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|---|---|
|VPP|Peak pulse voltage|ISO 10605 (C = 330 pF, R = 330Ω):
Contact discharge
Air discharge
IEC61000-4-2:
Contact discharge
Air discharge||30
30
30
30|kV|
|PPP|Peak pulse power dissipation(1)||Tjinitial = Tamb|600|W|
|Tj|Operating junction temperature range|||-55 to 175|°C|
|Tstg|Storage temperature range|||-65 to 175|°C|
|TL|Maximum lead temperature for soldering during 10 s.|||260|°C|
1. For a surge greater than the maximum values, the diode will fail in short-circuit.
## **Figure 1. Electrical characteristics - definitions**
**==> picture [331 x 130] intentionally omitted <==**
**----- Start of picture text -----**
I
Symbol V RM Stand-off voltage Parameter IPP
V BR Breakdown voltage
VIRMCL Clamping voltageLeakage current @ VRM V CLV BR V RM IIRMR V
IPP Peak pulse current IRM V RMV BR V CL
αT Voltage temperature coefficient IR
R D Dynamic resistance
Bidirectional
IPP
**----- End of picture text -----**
## **Figure 2. Pulse definition for electrical characteristics**
**==> picture [142 x 88] intentionally omitted <==**
**----- Start of picture text -----**
Repetitive pulse current
tr = rise time (µs)
tp = pulse duration time (µs)
tr tp
**----- End of picture text -----**
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**Characteristics**
**Table 2. Electrical characteristics, parameter values (Tamb = 25 °C)**
|**Order code**|**IRMmax at VRM**|**IRMmax at VRM**|**IRMmax at VRM**|**VBR at IR (1)**|**VBR at IR (1)**|**VBR at IR (1)**|**VBR at IR (1)**|**VCL at IPP**
**10/1000 µs**|**VCL at IPP**
**10/1000 µs**|**RD (2)**
**10/100**
**µs**|**VCLat IPP**
**8/20 µs**|**VCLat IPP**
**8/20 µs**|**RD (2)**
**8/20**
**µs**|α**T**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||**25**|**85**||**min.**|**typ.**|**max.**||**max.**|||**max.**|||**max.**|
||**°C**||||||||||||||
||**nA**|**µA**|**V**|**V**|||**mA**|**V(3)**|**A**|Ω|**V(3)**|**A**|Ω|**10-4/°C**|
|SM6T250CAY|200|1|213|237|250|263|1|344|1.75|53.7|400|10|15|11|
1. Pulse test: t < 50 ms p
2. To calculate maximum clamping voltage at another surge level, use the following formula: VCLmax = VCL - RD x (IPP - IPPappli) where IPPappli is the surge current in the application.
3. To calculate VBR or VCL versus junction temperature, use the following formulas: VBR @ TJ = VBR @ 25°C x (1 + α T x (TJ - 25)) VCL @ TJ = VCL @ 25°C x (1 + α T x (TJ - 25))
**Figure 3. Peak power dissipation versus initial junction temperature**
**Figure 4. Peak pulse power versus exponential pulse duration (Tj initial = 25 °C)**
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**Characteristics**
**SM6T250CAY**
**Figure 5. Clamping voltage versus peak pulse current exponential waveform (maximum values)**
**Figure 6. Junction capacitance versus reverse applied (typical values)**
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**Characteristics**
**Figure 7. Relative variation of thermal Figure 8. Thermal resistance junction to impedance, junction to ambient, versus pulse ambient versus copper surface under each lead duration**
**Figure 9. Leakage current versus junction temperature (typical values)**
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**SM6T250CAY**
**Application and design guidelines**
## **2 Application and design guidelines**
More information is available in the ST Application note AN2689 “Protection of automotive electronics from electrical hazards, guidelines for design and component selection”.
## **3 Packaging information**
- Case: JEDEC DO-214AA molded plastic over planar junction
- Terminals: solder plated, solderable as per MIL-STD-750, Method 2026
- Polarity: for unidirectional types the band indicates cathode
- 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.
**Figure 10. SMB outline (definitions)**
**==> picture [377 x 264] intentionally omitted <==**
**----- Start of picture text -----**
E1
D
E
A1
C A2
L b
**----- End of picture text -----**
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**Packaging information**
**Table 3. SMB dimensions (values)**
||||**Table 3. SMB dimensions(values)**|**Table 3. SMB dimensions(values)**|**Table 3. SMB dimensions(values)**|**Table 3. SMB dimensions(values)**|**Table 3. SMB dimensions(values)**|**Table 3. SMB dimensions(values)**|
|---|---|---|---|---|---|---|---|---|
|**Ref.**|||**Dimensions**||||||
||||**Millimeters**||||**Inches**||
||||**Min.**||**Max.**||**Min.**|**Max.**|
|A1|||1.90||2.45||0.075|0.096|
|A2|||0.05||0.20||0.002|0.008|
|b|||1.95||2.20||0.077|0.087|
|c|||0.15||0.40||0.006|0.016|
|D|||3.30||3.95||0.130|0.156|
|E|||5.10||5.60||0.201|0.220|
|E1|||4.05||4.60||0.159|0.181|
|L|||0.75||1.50||0.030|0.059|
|**Figure 11. SMB footprint dimensions in mm**
**(inches)**
**Figure 12. Marking layout(1)**|||||||||
|||||**2.18**
**(0.086)**||y
w
w
z
x
x
x
ECOPACK compliance
XXX: Ma rking
Z: Manufacturing location
Y: Year
WW: Week|||
||**1.62**
**(0.064)**|**2.60**
**5.84**
**1.62**
**(0.102)**
**(0.300)**
**(0.064)**|||||||
||||||||||
||||||||||
||||||||||
||||||||||
1. Marking layout can vary according to assembly location.
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**Ordering information**
**SM6T250CAY**
## **4 Ordering information**
## **Figure 13. Ordering information scheme**
**Table 4. Ordering information**
|**Order code**|**Marking**|**Weight**|**Base qty.**|**Delivery mode**|
|---|---|---|---|---|
|SM6T250CAY|PRY|0.11 g|2500|Tape and reel|
## **5 Revision history**
**Table 5. Document revision history**
|**Date**|**Revision**||**Changes**|
|---|---|---|---|
|19-Mar-2015|1|Initial release.||
|09-Apr-2015|2|Updated_Figure 7_.||
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## **IMPORTANT NOTICE – PLEASE READ CAREFULLY**
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2015 STMicroelectronics – All rights reserved
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## Links
- [View this product on Novapart](https://novapart.co/products/SM6T250CAY/tvs-diode-transil-sm6t-bidirectional-213-v-400-do)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/stmicroelectronics/sm6t250cay/tvs-diode-600w-213v-bidir-do-214aa/dp/2522918)
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