# TVS Diode, STS232xxxBxxx Series, Bidirectional, 12 V, 26 V, SOT-23, 3 Pins

![Product image](https://novapart.co/image/farnell:3755199/)

**URL**: https://novapart.co/products/STS232712B451/tvs-diode-sts232xxxbxxx-series-bidirectional-12-v
**SKU**: STS232712B451
**Manufacturer**: EATON BUSSMANN
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Diodes
**Price**: €0.0900
**Stock**: 1000+
**Lead Time**: 106 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | To Be Advised |
| No. Of Pins | 3Pins |
| Tvs Polarity | Bidirectional |
| Product Range | STS232xxxBxxx Series |
| Qualification | - |
| Diode Mounting | Surface Mount |
| Diode Case Style | SOT-23 |
| Clamping Voltage Max | 26V |
| Reverse Standoff Voltage | 12V |
| Maximum Breakdown Voltage | - |
| Minimum Breakdown Voltage | 13.3V |
| Operating Temperature Max | 125°C |
| Peak Pulse Power Dissipation | 400W |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3755199/)

Technical Data **11157** 

Effective September 2020 

## STS232712B451 TVS Diode array ESD suppressor 

## **Applications** 

- Protection of RS-485 transceivers with extended common-mode range 

- Security systems 

- Automatic teller machines 

- HFC systems 

- Networks 

## **Product features** 

- 400 watts peak pulse power per line (tP = 8/20 µs) 

- Protects two 7 V to 12 V lines 

- Low clamping voltage 

## **Environmental compliance and general specifications** 

   - IEC61000-4-2 (ESD) 

      - ±15 kV (air) 

      - ±8 kV (contact) 

   - IEC61000-4-5 (Lightning) 12 A (8/20 µs) 

- Low capacitance 

- Solid-state silicon avalanche technology 

- Meets moisture sensitivity level (MSL) 3 

**==> picture [58 x 28] intentionally omitted <==**

**----- Start of picture text -----**<br>
HALOGEN<br>Pb HF<br>FREE<br>SO<br>**----- End of picture text -----**<br>


- Molding compound flammability rating: UL 94V-0 

- Termination finish: Tin 

## **Ordering part number** 

## **ST S23 2 712 B 451** 

Family Package (S23- SOT23) Number of channels (2-2) Operating voltage (712-7  V/12  V) Bi/Uni directional (B- Bi) Capacitance (451- 45 pF) 

## **Pin out/functional diagram** 

STS232712B451 TVS Diode array ESD suppressor 

Technical Data 11157 Effective Sepetmber 2020 

## **Absolute maximum ratings** 

(+25 °C, RH=45%-75%, unless otherwise noted) 

|**STS232712B451**|||||||
|---|---|---|---|---|---|---|
|**Parameter**||**Symbol**||**Value**||**Unit**|
|Peak pulse power dissipation on 8/20 μs waveform||Ppp||400||W|
|ESD per IEC 61000-4-2 (Air)||VESD||+/-15||kV|
|ESD per IEC 61000-4-2 (Contact)||||+/-8|||
|Lead soldering temperature||TL||+260 (10 seconds)||°C|
|Operating junction temperature range||TJ||-55 to +125||°C|
|Storage temperature range||TSTG||-55 to +150||°C|



## **Electrical characteristics** 

## (+25 °C) 

|**Pins 1, Pin 2 to Pin 3 (12 V TVS)**|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|**Parameter**|**Test condition**|||**Minimum**||**Typical**||**Maximum**||**Symbol (Units)**|
|Reverse stand-off voltage|-|||-||-||12||VRWM(V)|
|Reverse breakdown voltage|IT= 1 mA|||13.3||-||-||VBR(V)|
|Reverse leakage current|VR= VRWM|||-||-||1||IR(μA)|
|Clamping voltage|IPP= 5 A,|||-||20||23||VC(V)|
||tp= 8/20 μs||||||||||
||IPP= 12 A,|||-||23||26|||
||tp = 8/20 μs||||||||||
|Junction capacitance|VR= 0 V, f = 1 MHz|||-||-||75||CJ(pF)|
||VR= VRWM, f = 1 MHz|||-||45||-|||



|**Pins 3, Pin 1 to Pin 2 (7 V TVS)**|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|**Parameter**|**Test condition**|||**Minimum**||**Typical**||**Maximum**||**Symbol (Units)**|
|Reverse stand-off voltage|-|||-||-||7||VRWM(V)|
|Reverse breakdown voltage|IT= 1 mA|||7.5||-||-||VBR(V)|
|Reverse leakage current|VR= VRWM|||-||-||1||IR(μA)|
|Clamping voltage|IPP= 5 A,|||-||12||15||VC(V)|
||tp= 8/20 μs||||||||||
||IPP= 12 A,|||-||15||18|||
||tp = 8/20 μs||||||||||
|Junction capacitance|VR= 0 V, f = 1 MHz|||-||-||75||CJ(pF)|
||VR= VRWM, f = 1 MHz|||-||45||-|||



2 

www.eaton.com/electronics 

Technical Data 11157 Effective September 2020 

STS232712B451 TVS Diode array ESD suppressor 

## **Mechanical parameters, pad layout- mm/inches** 

||**Millimeters**|**Millimeters**|**Millimeters**||**Inches**|**Inches**|**Inches**|
|---|---|---|---|---|---|---|---|
|**Dimension**|**Minimum**||**Maximum**||**Minimum**||**Maximum**|
|A|0.9||1.15||0.035||0.045|
|A1<br>0.00<br>0.10<br>0.000<br>0.004<br>b<br>0.25<br>0.325<br>0.010<br>0.013<br>~~a~~||||||||
|C|0.22||0.25||0.009||0.01|
|D|2.8||3.0||0.11||0.118|
|e|1.8||1.9||0.071||0.075|
|E|1.2||1.4||0.047||0.055|
|L<br>0.30<br>~~ANT~~|||0.50||0.012||0.02|
|He|2.25||2.55||0.089||0.1|
|X<br>~~OE~~|0.8<br>~~OE~~|0.8<br>~~OE~~|~~OE~~|~~OE~~|0.0315<br>~~OE~~|~~OE~~|~~OE~~|
|X1|0.95|0.95|||0.037|||
|Y|0.80|0.80|||0.0315|||
|Z|2.02|2.02|||0.0795|||



## **Part marking** 

3 

www.eaton.com/electronics 

STS232712B451 TVS Diode array ESD suppressor 

Technical Data 11157 Effective Sepetmber 2020 

## **Packaging information mm/inches** 

Drawing not to scale. 

Supplied in tape and reel packaging, 3,000 parts per 7” diameter reel (EIA-481 compliant) 

4 

www.eaton.com/electronics 

Technical Data 11157 Effective September 2020 

STS232712B451 TVS Diode array ESD suppressor 

**Ratings and V-I characteristic curves** (+25 °C unless otherwise noted) 

## **V- I curve characteristics (Bi-directional)** 

## **Pulse derating curve** 

## **Pulse waveform (8/20 µs)** 

## **ESD waveform** 

5 

www.eaton.com/electronics 

STS232712B451 TVS Diode array ESD suppressor 

Technical Data 11157 Effective September 2020 

## **Solder reflow profile** 

**==> picture [328 x 182] intentionally omitted <==**

**----- Start of picture text -----**<br>
TP<br>TC -5°C<br>Max. Ramp Up Rate = 3°C/s tP<br>Max. Ramp Down Rate = 6°C/s<br>TL Preheat t |<br>ee" A<br>Tsmax<br>Tsmin<br>   ts<br>25°C<br>Time 25°C to Peak  Time<br>Temperature<br>**----- End of picture text -----**<br>


## **Table 1 - Standard SnPb solder (Tc)** 

|**Package**<br>**thickness**<br>**Volume**<br>**mm3**<br>**<350**<br>**Volume**<br>**mm3**<br>**≥350**|
|---|
|<2.5 mm<br>235 °C<br>220 °C<br>≥2.5 mm<br>220 °C<br>220 °C<br>~~a~~|



## **Table 2 - Lead (Pb) free solder (Tc)** 

|**Package**<br>**thickness**||**Volume**<br>**mm3**<br>**<350**||**Volume**<br>**mm3**<br>**350 - 2000**||**Volume**<br>**mm3**<br>**>2000**|
|---|---|---|---|---|---|---|
|<1.6 mm||260 °C||260 °C||260 °C|
|1.6 – 2.5 mm||260 °C||250 °C||245 °C|
|>2.5 mm||250 °C||245 °C||245 °C|



## **Reference J-STD-020** 

|**Profile feature**||**Standard SnPb solder**||**Lead (Pb) free solder**|
|---|---|---|---|---|
|Preheat and soak     • Temperature min. (Tsmin)||100 °C||150 °C|
|• Temperature max. (Tsmax)||150 °C||200 °C|
|• Time (Tsminto Tsmax) (ts)||60-120 seconds||60-120 seconds|
|Ramp up rate TLto Tp||3 °C/ second max.||3 °C/ second max.|
|Liquidous temperature (Tl)||183 °C||217 °C|
|Time (tL) maintained above TL||60-150 seconds||60-150 seconds|
|Peak package body temperature (TP)*||Table 1||Table 2|
|Time (tp)* within 5 °C of the specified classification temperature (Tc)||20 seconds*||30 seconds*|
|Ramp-down rate (Tpto TL)||6 °C/ second max.||6 °C/ second max.|
|Time 25 °C to peak temperature||6 minutes max.||8 minutes max.|



* Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum. 

Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 

Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. 

**Eaton Electronics Division** 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com/electronics © 2020 Eaton All Rights Reserved Printed in USA Publication No. 11157 BU-MC20139 September 2020 

Follow us on social media to get the Eaton is a registered trademark. latest product and support information. All other trademarks are property of their respective owners. f/¥iinjo 



## Links

- [View this product on Novapart](https://novapart.co/products/STS232712B451/tvs-diode-sts232xxxbxxx-series-bidirectional-12-v)
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- [Supplier page](https://es.farnell.com/eaton-bussmann/sts232712b451/tvs-diode-bidirectinal-12v-400w/dp/3755199)
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