# Small Signal Schottky Diode, Dual Common Cathode, 40 V, 200 mA, 300 mV, 1 A, 125 °C

![Product image](https://novapart.co/image/farnell:1081199/)

**URL**: https://novapart.co/products/BAT721C,215/small-signal-schottky-diode-dual-common-cathode-40
**SKU**: BAT721C,215
**Manufacturer**: NEXPERIA
**Price**: €0.0980
**Stock**: 10+
**Lead Time**: 378 days (indicative)

## Description

Diode Configuration:Dual Common Cathode; Repetitive Reverse Voltage Vrrm Max:40V; Forward Current If(AV):200mA; Forward Voltage VF Max:300mV; Forward Surge Current Ifsm Max:1A; Operating Temperatur

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3Pins |
| Product Range | BAT721 |
| Qualification | - |
| Diode Mounting | Surface Mount |
| Diode Case Style | SOT-23 |
| Diode Configuration | Dual Common Cathode |
| Forward Voltage Max | 300mV |
| Forward Surge Current | 1A |
| Reverse Recovery Time | - |
| Average Forward Current | 200mA |
| Operating Temperature Max | 125°C |
| Repetitive Peak Reverse Voltage | 40V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:1081199/)

**==> picture [158 x 160] intentionally omitted <==**

## **1PS76SB21; BAT721 series Schottky barrier diodes in small packages Rev. 06 — 21 December 2006** 

**Product data sheet** 

## **1.** 

## **1.1 General description** 

Planar Schottky barrier diodes with an integrated guard ring for stress protection. Encapsulated in small Surface-Mounted Device (SMD) plastic packages. 

## **Table 1. Product overview** 

|**Type number**|**Package**|**Package**|**Confguration**|
|---|---|---|---|
||**Nexperia**|**JEITA**||
|1PS76SB21|SOD323<br>SC-76<br>single|||
|BAT721|SOT23<br>-<br>single|||
|BAT721A|SOT23<br>-<br>dual common anode|||
|BAT721C|SOT23<br>-<br>dual common cathode|||
|BAT721S|SOT23<br>-<br>dual series|||



## **1.2 Features** 

I Low forward voltage 

I Small SMD plastic packages 

I Low capacitance 

## **1.3 Applications** 

I Ultra high-speed switching 

- I Voltage clamping 

- I Line termination 

- I Reverse polarity protection 

## **1.4 Quick reference data** 

|**Table 2.**<br>**Quick reference data**|||
|---|---|---|
|**Symbol**<br>**Parameter**<br>**Conditions**<br>**Per diode**||**Min**<br>**Typ**<br>**Max**<br>**Unit**|
|IF<br>forward current||-<br>-<br>200<br>mA|
|VR<br>reverse voltage||-<br>-<br>40<br>V|
|VF<br>forward voltage<br>IF= 200 mA|[1]|-<br>-<br>550<br>mV|



[1] Pulse test: tp ≤ 300 µs; δ ≤ 0.02. 

**==> picture [595 x 125] intentionally omitted <==**

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **1PS76SB21; BAT721 series** 

## **2. Pinning information** 

**==> picture [397 x 508] intentionally omitted <==**

**----- Start of picture text -----**<br>
Table 3. Pinning<br>Pin Description Simplified outline Symbol<br>1PS76SB21<br>1 cathode [1]<br>1 2 1 2<br>2 anode<br>sym001<br>BAT721<br>1 anode<br>2 not connected 3 3<br>3 cathode 1 2<br>n.c.<br>006aaa436<br>1 2<br>006aaa144<br>BAT721A<br>1 cathode (diode 1)<br>2 cathode (diode 2) 3 3<br>3 anode (diode 1), 1 2<br>anode (diode 2)<br>006aaa439<br>1 2<br>006aaa144<br>BAT721C<br>1 anode (diode 1)<br>2 anode (diode 2) 3 3<br>3 cathode (diode 1), 1 2<br>cathode (diode 2) 006aaa438<br>1 2<br>006aaa144<br>BAT721S<br>1 anode (diode 1)<br>2 cathode (diode 2) 3 3<br>3 cathode (diode 1), 1 2<br>anode (diode 2)<br>006aaa437<br>1 2<br>006aaa144<br>**----- End of picture text -----**<br>


- [1] The marking bar indicates the cathode. 

© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**2 of 11** 

**1PS76SB21; BAT721 series** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **3. Ordering information** 

## **Table 4. Ordering information** 

**==> picture [397 x 101] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||||
|---|---|---|---|
|Type number|Package|
|Name|Description|Version|
|1PS76SB21|SC-76|plastic surface-mounted package; 2 leads|SOD323|
|BAT721|-|plastic surface-mounted package; 3 leads|SOT23|
|BAT721A|
|BAT721C|
|BAT721S|

**----- End of picture text -----**<br>


## **4. Marking** 

**==> picture [397 x 98] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||||
|---|---|---|---|
|Table 5.|Marking codes|
|Type number|Marking cod|e|[1]|
|1PS76SB21|S1|
|BAT721|L7*|
|BAT721A|L8*|
|BAT721C|L9*|
|BAT721S|L0*|

**----- End of picture text -----**<br>


- [1] * = -: made in Hong Kong 

   - = p: made in Hong Kong 

   - = t: made in Malaysia 

   - = W: made in China 

## **5. Limiting values** 

## **Table 6. Limiting values** 

In accordance with the Absolute Maximum Rating System (IEC 60134). 

**==> picture [397 x 141] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||||||
|---|---|---|---|---|---|
|Symbol|Parameter|Conditions|Min|Max|Unit|
|Per diode|
|VR|reverse voltage|-|40|V|
|IF|forward current|-|200|mA|
|IFSM|non-repetitive peak forward|half sine wave;|-|1|A|
|current|JEDEC method;|
|tp = 8.3 ms|
|Tj|junction temperature|-|125|°C|
|Tamb|ambient temperature|−65|+150|°C|
|Tstg|storage temperature|−65|+150|°C|

**----- End of picture text -----**<br>


© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**3 of 11** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **1PS76SB21; BAT721 series** 

## **6. Thermal characteristics** 

## **Table 7. Thermal characteristics** 

|**Symbol**|**Parameter**<br>**Conditions**<br>**Min**<br>**Typ**<br>**Max**<br>**Unit**|
|---|---|
|**Per diode**||
|Rth(j-a)|thermal resistance from<br>junction to ambient<br>in free air<br>[1]|
||1PS76SB21<br>-<br>-<br>450<br>K/W|
||BAT721<br>-<br>-<br>500<br>K/W|
||BAT721A<br>-<br>-<br>500<br>K/W|
||BAT721C<br>-<br>-<br>500<br>K/W|
||BAT721S<br>-<br>-<br>500<br>K/W|



[1] Device mounted on an FR4 Printed-Circuit Board (PCB), single-sided copper, tin-plated and standard footprint. 

## **7. Characteristics** 

## **Table 8. Characteristics** 

Tamb = 25 ° 

|**Symbol**<br>**Parameter**|**Conditions**<br>**Min**<br>**Typ**<br>**Max**<br>**Unit**|
|---|---|
|**Per diode**||
|VF<br>forward voltage|IF= 10 mA<br>[1] -<br>-<br>300<br>mV|
||IF= 100 mA<br>[1] -<br>-<br>420<br>mV|
||IF= 200 mA<br>[1] -<br>-<br>550<br>mV|
|IR<br>reverse current|VR= 30 V<br>-<br>-<br>15<br>µA|
||VR= 30 V; Tj= 100°C<br>-<br>-<br>3<br>mA|
|Cd<br>diode capacitance|VR= 0 V; f = 1 MHz<br>-<br>40<br>50<br>pF|



[1] Pulse test: tp ≤ 300 µs; δ ≤ 0.02. 

© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**4 of 11** 

**1PS76SB21; BAT721 series** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

**==> picture [497 x 291] intentionally omitted <==**

**----- Start of picture text -----**<br>
006aaa689 006aaa690<br>10 [3] 10<br>IR<br>(1)<br>IF (mA)<br>(mA) 1<br>(2)<br>10 [2]<br>10 [−][1]<br>10 [−][2]<br>(1) (2) (3) (4) (3)<br>10<br>10 [−][3]<br>10 [−][4]<br>1<br>10 [−][5] (4)<br>10 [−][1] 10 [−][6]<br>0 200 400 600 0 10 20 30 40<br>VF (mV) VR (V)<br>(1) Tamb = 125 °C (1) Tamb = 125 °C<br>(2) Tamb = 85 °C (2) Tamb = 85 °C<br>(3) Tamb = 25 °C (3) Tamb = 25 °C<br>(4) Tamb = −40 °C (4) Tamb = −40 °C<br>Fig 1. Forward current as a function of forward Fig 2. Reverse current as a function of reverse<br>voltage; typical values voltage; typical values<br>**----- End of picture text -----**<br>


**==> picture [233 x 189] intentionally omitted <==**

**----- Start of picture text -----**<br>
mbk574<br>10 [2]<br>Cd<br>(pF)<br>10<br>1<br>0 10 20 30 40<br>VR (V)<br>**----- End of picture text -----**<br>


Tamb = 25 °C; f = 1 MHz 

**==> picture [313 x 10] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fig 3. Diode capacitance as a function of reverse voltage; typical values<br>**----- End of picture text -----**<br>


© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**5 of 11** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **1PS76SB21; BAT721 series** 

## **8. Package outline** 

**==> picture [497 x 201] intentionally omitted <==**

**----- Start of picture text -----**<br>
1.35 1.1<br>1.15 0.8 3.0 1.1<br>2.8 0.9<br>0.45<br>1<br>0.15 3<br>0.45<br>0.15<br>2.7 1.8 2.5 1.4<br>2.3 1.6 2.1 1.2<br>1 2<br>2<br>0.48 0.15<br>0.40 0.25 0.38 0.09<br>0.25 0.10 1.9<br>Dimensions in mm 03-12-17 Dimensions in mm 04-11-04<br>Fig 4. Package outline SOD323 (SC-76) Fig 5. Package outline SOT23<br>**----- End of picture text -----**<br>


## **9. Packing information** 

**Table 9. Packing methods** The indicated -xxx are the last three digits of the 12NC ordering code ~~.~~ [1] 

|**Type number**<br>**Package**<br>**Description**|**Packing quantity**|**Packing quantity**|
|---|---|---|
||**3000**|**10000**|
|1PS76SB21<br>SOD323<br>4 mm pitch, 8 mm tape and reel|-115<br>-135||
|BAT721<br>SOT23<br>4 mm pitch, 8 mm tape and reel<br>BAT721A<br>BAT721C<br>BAT721S|-215<br>-235||



[1] For further information and the availability of packing methods, see Section 13. 

© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**6 of 11** 

**1PS76SB21; BAT721 series** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **10. Soldering** 

**==> picture [312 x 144] intentionally omitted <==**

**----- Start of picture text -----**<br>
3.05<br>2.80<br>2.10<br>1.60<br>solder lands<br>solder resist<br>1.65 0.95 0.50 0.60<br>occupied area<br>solder paste<br>0.50<br>msa433<br>(2×)<br>Dimensions in mm<br>**----- End of picture text -----**<br>


**==> picture [215 x 14] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fig 6. Reflow soldering footprint SOD323 (SC-76)<br>**----- End of picture text -----**<br>


**==> picture [341 x 198] intentionally omitted <==**

**----- Start of picture text -----**<br>
5.00<br>4.40<br>1.40<br>solder lands<br>solder resist<br>occupied area<br>2.75 1.20<br>msa415<br>preferred transport direction during soldering<br>Dimensions in mm<br>Fig 7. Wave soldering footprint SOD323 (SC-76)<br>**----- End of picture text -----**<br>


© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**7 of 11** 

**1PS76SB21; BAT721 series** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

**==> picture [310 x 192] intentionally omitted <==**

**----- Start of picture text -----**<br>
2.90<br>2.50<br>solder lands<br>solder resist<br>0.85 2 1<br>3.00 1.30 2.70 occupied area<br>0.85 3<br>solder paste<br>0.60<br>(3x)<br>0.50 (3x)<br>0.60 (3x)<br>1.00<br>3.30 MSA439<br>Dimensions in mm<br>**----- End of picture text -----**<br>


**==> picture [175 x 14] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fig 8. Reflow soldering footprint SOT23<br>**----- End of picture text -----**<br>


**==> picture [363 x 224] intentionally omitted <==**

**----- Start of picture text -----**<br>
3.40<br>1.20 (2x)<br>solder lands<br>solder resist<br>occupied area<br>2 1<br>4.60 4.00 1.20<br>3<br>preferred transport direction during soldering<br>2.80<br>MSA427<br>4.50<br>Dimensions in mm<br>**----- End of picture text -----**<br>


**==> picture [169 x 10] intentionally omitted <==**

**----- Start of picture text -----**<br>
Fig 9. Wave soldering footprint SOT23<br>**----- End of picture text -----**<br>


© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**8 of 11** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **1PS76SB21; BAT721 series** 

## **11. Revision history** 

|**11. Revision history**||
|---|---|
|**Table 10.**<br>**Revision history**||
|**Document ID**<br>**Release date**<br>**Data sheet status**<br>**Change notice**<br>**Supersedes**<br>1PS76SB21_BAT721_SER_6<br>20061221<br>Product data sheet<br>-<br>1PS76SB21_BAT721<br>_SER_5||
|Modifcations:<br>**•**|Amended<br>T<br>ab<br>le10“Re<br>vision histor<br>y”|
|1PS76SB21_BAT721_SER_5<br>20061205<br>Product data sheet<br>-<br>BAT721_SERIES_4<br>1PS76SB21_3||
|Modifcations:<br>**•** <br>**•** <br>**•** <br>**•**|The format of this data sheet has been redesigned to comply with the new identity<br>guidelines of NXP Semiconductors.<br> Legal texts have been adapted to the new company name where appropriate.<br> This data sheet is a combination of data sheets BAT721_SERIES_4 and<br>1PS76SB21_3.<br>T<br>ab<br>le1 “Product o<br>v<br>er<br>vie<br>w”: added|
|**•**|Section 1.2 “F<br>eatures”: amended|
|**•**|Section 1.3“Applications”: amended|
|**•**|T<br>ab<br>le2 “Quic<br>k ref<br>erence data”: added|
|**•**|T<br>ab<br>le 5“Mar<br>king codes”: for 1PS76SB21 amended|
|**•**|T<br>ab<br>le 5“Mar<br>king codes”: enhanced table note section|
|**•**|T<br>ab<br>le 6“Limitingv<br>alues”: indication per diode added|
|**•**|T<br>ab<br>le 6“Limitingv<br>alues”: for 1PS76SB21 IFSMcondition amended|
|**•**|T<br>ab<br>le 6“Limitingv<br>alues”: Tambambient temperature added|
|**•**|T<br>ab<br>le7 “Ther<br>malchar<br>acter<br>istics”: indication per diode added|
|**•**<br>**•**|T<br>ab<br>le<br>7: Rth(j-a)thermal resistance from junction to ambient condition amended<br>T<br>ab<br>le 8“Char<br>acter<br>istics”: indication per diode added|
|**•**|T<br>ab<br>le 8“Char<br>acter<br>istics”: reference to<br>T<br>ab<br>lenote<br>1amended|
|**•**|T<br>ab<br>le<br>8: for 1PS76SB21 Cdminimum value changed to typical value|
|**•**|Figure<br>1and<br>2: amended|
|**•**|Figure<br>4and<br>5: superseded by minimized package outlines|
|**•**|Section9“P<br>ac<br>kinginf<br>or<br>mation”: added|
|**•**|Section 10“Solder<br>ing”: added|
|**•**|Section 12 “Legal inf<br>or<br>mation”: updated|
|BAT721_SERIES_4<br>20040315<br>Product specifcation<br>-<br>BAT721_SERIES_3||
|1PS76SB21_3<br>20040126<br>Product specifcation<br>-<br>1PS76SB21_2||



© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**9 of 11** 

**1PS76SB21; BAT721 series** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **12. Legal information** 

## **12.1 Data sheet status** 

|**Document statu**|**s**<br>**[1]**<br>**[2]**<br>**Product status**<br>**[3]**<br>**Defnition**|
|---|---|
|Objective [short] data sheet<br>Development<br>This document contains data from the objective specifcation for product development.||
|Preliminary [short] data sheet<br>Qualifcation<br>This document contains data from the preliminary specifcation.||
|Product [short] data sheet<br>Production<br>This document contains the product specifcation.||



[1] Please consult the most recently issued document before initiating or completing a design. 

[2] 

[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nexperia.com. 

## **12.2** 

**Draft —** The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. 

**Short data sheet —** A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Nexperia sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. 

## **12.3 Disclaimers** 

**General —** Information in this document is believed to be accurate and reliable.However,Nexperiadoesnotgiveanyrepresentationsor warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. 

**Right to make changes —** Nexperiareservestherighttomake changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. 

**Suitability for use —** Nexperia products are not designed, authorized or warranted to be suitable for use in medical, military, aircraft, space or life support equipment, nor in applications where failure or 

malfunctionofaNexperiaproductcanreasonablybeexpectedto result in personal injury, death or severe property or environmental damage. Nexperia accepts no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. 

**Applications —** Applications that are described herein for any of these products are for illustrative purposes only. Nexperia makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. 

**Limiting values —** the Absolute Maximum Ratings System of IEC 60134) may cause permanent damage to the device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the Characteristics sections of this document is not implied. Exposure to limiting values for extended periods may affect device reliability. 

**Terms and conditions of sale —** Nexperia products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nexperia.com/profile/terms, including those pertaining to warranty, intellectual property rights infringement and limitation of liability, unless explicitly otherwise agreed to in writing by Nexperia. In case of any inconsistency or conflict between information in this document and such terms and conditions, the latter will prevail. 

**No offer to sell or license —** Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. 

## **12.4 Trademarks** 

Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 

## **13. Contact information** 

For additional information, please visit: **http://www.nexperia.com** 

**salesaddresses@nexperia.com** 

© Nexperia B.V. 2017. All rights reserved 

1PS76SB21_BAT721_SER_6 **Product data sheet** 

**Rev. 06 — 21 December 2006** 

**10 of 11** 

**1PS76SB21; BAT721 series** 

**Nexperia** 

**Schottky barrier diodes in small packages** 

## **14. Contents** 

**==> picture [239 x 270] intentionally omitted <==**

**----- Start of picture text -----**<br>
||||
|---|---|---|
|1|Product profile . . . . . . . . . . . . . . . . . . . . . . . . . .|1|
|1.1|General description. . . . . . . . . . . . . . . . . . . . . .|1|
|1.2|Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .|1|
|1.3|Applications  . . . . . . . . . . . . . . . . . . . . . . . . . . .|1|
|1.4|Quick reference data. . . . . . . . . . . . . . . . . . . . .|1|
|2|Pinning information. . . . . . . . . . . . . . . . . . . . . .|2|
|3|Ordering information . . . . . . . . . . . . . . . . . . . . .|3|
|4|Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .|3|
|5|Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . .|3|
|6|Thermal characteristics. . . . . . . . . . . . . . . . . . .|4|
|7|Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . .|4|
|8|Package outline . . . . . . . . . . . . . . . . . . . . . . . . .|6|
|9|Packing information. . . . . . . . . . . . . . . . . . . . . .|6|
|10|Soldering  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .|7|
|11|Revision history. . . . . . . . . . . . . . . . . . . . . . . . .|9|
|12|Legal information. . . . . . . . . . . . . . . . . . . . . . .|10|
|12.1|Data sheet status . . . . . . . . . . . . . . . . . . . . . .|10|
|12.2|Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . .|10|
|12.3|Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . .|10|
|12.4|Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . .|10|
|13|Contact information. . . . . . . . . . . . . . . . . . . . .|10|
|14|Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .|11|

**----- End of picture text -----**<br>


> © **Nexperia B.V. 2017. All rights reserved** 

For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com **Date of release: 21 December 2006** 



## Links

- [View this product on Novapart](https://novapart.co/products/BAT721C,215/small-signal-schottky-diode-dual-common-cathode-40)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/nexperia/bat721c-215/diode-schottky-dual/dp/1081199)
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