# B340B-13-F (Component) ## Description Diode 40 V 3A Surface Mount SMB Schottky diode 3A 40V SMB The B340B-13-F is a surface-mount Schottky barrier rectifier diode designed for efficient power rectification in low-voltage, high-frequency applications. It features low forward voltage drop and fast switching capability, making it suitable for DC-DC converters, power supplies, reverse polarity protection, and freewheeling diode applications. The device is housed in a compact SMB (DO-214AA) package, enabling high current handling in space-constrained designs. ELECTRICAL CHARACTERISTICS Reverse Voltage (VRRM): 40 V Average Forward Current (IF(AV)): 3 A Forward Voltage (VF): 0.5 V (typical at IF = 3 A) Reverse Leakage Current (IR): 0.5 mA (max at VR = 40 V, 25°C) Peak Surge Current (IFSM): 80 A (8.3 ms single half sine wave) THERMAL CHARACTERISTICS Operating Junction Temperature Range: -55°C to +150°C Storage Temperature Range: -55°C to +150°C Thermal Resistance Junction-to-Ambient (RθJA): ~75 °C/W MECHANICAL CHARACTERISTICS Package Type: SMB (DO-214AA) Mounting Type: Surface Mount (SMD) Polarity: Cathode marked by band Weight: ~0.1 g FEATURES Low forward voltage drop for improved efficiency High surge current capability Fast switching speed Low power loss and high reliability Compact SMB package for space-saving PCB layout RoHS compliant and halogen-free APPLICATIONS Switch-mode power supplies (SMPS) DC-DC converters Reverse polarity protection circuits Freewheeling and clamping diodes Battery charging circuits MANUFACTURER / PART DETAILS Manufacturer: Diodes Incorporated Part Number: B340B-13-F Package Code: SMB (DO-214AA) #Diode #Rectifier #Single-Diode #SCHOTTKY #B340 ## Component Details - **Owner:** adrian95 - **Created:** 4/29/2026 - **Last Updated:** 4/29/2026 - **Visibility:** Public - **Datasheet URL:** https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/844/B320B-B360B_Rev10-2.pdf - **Part Type:** Diode - **License:** https://creativecommons.org/licenses/by/4.0/ - **Manufacturer Name:** Diodes Incorporated - **Manufacturer Part Number:** B340B-13-F - **Used in:** 8 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Arrow](https://www.arrow.com/en/products/b340b-13-f/diodes-incorporated?utm_currency=USD&region=asia) | N/A | N/A | | [Digi-Key](https://www.digikey.com/en/products/detail/diodes-incorporated/B340B-13-F/768869) | N/A | N/A | | [HQonline](https://www.hqonline.com/product-detail/schottky-diode-diodes-b340b-13-f-2500218062) | N/A | N/A | | [LCSC](https://www.lcsc.com/product-detail/C85099.html) | N/A | N/A | | [Mouser](https://www.mouser.com/ProductDetail/Diodes-Incorporated/B340B-13-F?qs=1Fl9bI8AFQ9v6PHyVeNfSw%3D%3D) | $0.57 | 162K | | [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=B340B-13-F) | $0.361 | 3K | | [Verical](https://www.verical.com/pd/diodes-inc-rectifier-B340B-13-F-110980?utm_currency=USD) | N/A | N/A | - **Part Type:** Diodes - **Sub-Type:** Schottky - **Manufacturer:** Diodes - **MPN:** B340B-13-F - **Mount Type:** Surface Mount - **Package / Case Code:** TO - **Pin Count:** 2 - **Compliance:** Rohs, Halogen Free ## Pins | Pin | Name | Type | |-----|------|------| | 1 | K | | | 2 | A | | --- *Generated from [https://www.flux.ai/adrian95/b340b-13-f~y1g](https://www.flux.ai/adrian95/b340b-13-f~y1g)*