# RN1405,LF (Component)

## Description

NPN pre\-biased \(bias resistor built\-in\) transistor, 50 V VCEO, 100 mA, 200 mW\. Internal network: R1 = 2\.2 kΩ series resistor from BASE \(input, pin 1\) to transistor base; R2 = 47 kΩ from internal base to EMITTER \(pin 2\)\. S\-Mini \(SOT\-346 / SC\-59 / TO\-236MOD, DigiKey: SOT\-23\-3\) 3\-pin\. Pinout: 1 = B \(input\), 2 = E, 3 = C\.

## Component Details

- **Owner:** jharwinbarrozo
- **Created:** 10/21/2026
- **Last Updated:** 10/21/2026
- **Visibility:** Public
- **Max Current:** 0\.1A
- **Manufacturer Name:** Toshiba
- **Power Rating:** 0\.2W
- **Manufacturer Part Number:** RN1405,LF
- **Package or Case Code:** SOT\-23\-3
- **Voltage Rating:** 50V
- **Standard Symbol:** NPN Transistor
- **Symbol Style:** parametric\-v1
- **Purchase Url:** https://www\.digikey\.co\.uk/en/products/detail/toshiba\-semiconductor\-and\-storage/RN1405\-LF/3191342
- **Datasheet URL:** https://datasheet\.octopart\.com/RN1401\-Toshiba\-datasheet\-181390736\.pdf
- **Part Type:** Transistor
- **Mount:** Surface Mount
- **Transistor Type:** NPN

## 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/rn1405lf/toshiba.html?utm_currency=USD&region=nac) | N/A | N/A |
| [LCSC](https://www.lcsc.com/product-detail/C17249533.html) | N/A | N/A |
| [Mouser](https://www.mouser.com/en/ProductDetail/Toshiba/RN1405LF?qs=OLJpxlzHOST29EzYdy3r2A%253D%253D) | $0\.21 | 33K |

- **Part Type:** Transistors
- **Sub-Type:** NPN
- **Manufacturer:** Toshiba
- **MPN:** RN1405,LF
- **Mount Type:** Surface Mount
- **Package / Case Code:** SOT\-23
- **Pin Count:** 3
- **Drain To Source Voltage:** 50V
- **Continuous Drain Current:** 100mA
## Pins

| Pin | Name | Type |
|-----|------|------|
| 1 | B | Input |
| 3 | C | Passive |
| 2 | E | Passive |

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*Generated from [https://flux\.ai/jharwinbarrozo/rn1405clf\~39k](https://flux.ai/jharwinbarrozo/rn1405clf~39k)*