

Overview
The 93LC46B/P is an EEPROM made by Microchip Technology in a PDIP-8 package with 8 pins. 0℃~+70℃ 1Kbit 2.5V~5.5V 2MHz 6ms SPI PDIP-8 EEPROM ROHS.
PCBKit's library has its KiCad symbol (Memory_EEPROM:93LCxxB, from KiCad's library) and its footprint (Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1349220). 10 open-source boards in 10 repositories on GitHub use it.
Symbol
Footprint
Parameters
11- Clock Frequency
- 2MHz
- Data Retention - TDR (Year)
- 200 Years
- Features
- Software write protection function, Power-down/Power-up protection circuit
- Interface
- SPI
- Memory Size
- 1Kbit
- Operating Current
- 2mA
- Operating Temperature
- -40℃~+85℃
- Standby Current
- 5uA
- Voltage - Supply
- 2.5V~5.5V
- Write Cycle Endurance
- 1,000,000 cycles
- Write Cycle Time(Tw)
- 6ms
Order codes
2- 93LC46B/PLCSC C1349220
- 93LC46B/PLCSC C613868
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | CS | Input |
| 2 | SCLK | Input |
| 3 | DI | Input |
| 4 | DO | Tri-state |
| 5 | GND | Power in |
| 6 | NC | Not connected |
| 7 | NC | Not connected |
| 8 | VCC | Power in |
Open-source boards using it
All 10- 2 layers91.3 × 53.3 mm

- 4 layers89 × 61 mm

Spartan6Dev
jonthomasson/SpartanMini
A flexible, simple, yet powerful FPGA development board.
186 parts17 - 4 layers160 × 100 mm

SoMProgrammerNTester
fsnitz/CcSoM
An open source system on chip based on the GateMate FPGA from Cologne Chip (Supports: CCGM1A1 & CCGM1A2)
249 parts8 - 4 layers58.4 × 62.2 mm

Daybreak mk3b
reedtaylor/daybreak_mk3
A PCB interface between the Decent Espresso DE1 and USB or Adafriuit Feather HUZZAH32 EESP32
63 parts3 - 2 layers53 × 34.2 mm

- 2 layers87 × 68 mm

Modbus RJ45-Breakout
the78mole/ModBus-RJ45-Breakout-2
The second iteration of the breakout with a Dual-USB-Serial-Converter (FT2232)
145 parts1 - 2 layers160 × 100 mm

Tuermodul
fablabnbg/Innentueren
Schaltplan und Layout für Leseeinheiten und Türmodule des Zugangssystems für die Innentüren
123 parts - 2 layers88.8 × 114.5 mm

USB CopyNES
famicomical/USB_CopyNES
KiCad 9 recreation of the Sealie USB CopyNES V4 (rev D), traced from the original PCB
35 parts
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/microchip/93LC46B/P" title="93LC46B/P in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/microchip/93LC46B/P.jpg" alt="93LC46B/P" width="1200" height="900">[](https://pcbkit.io/parts/microchip/93LC46B/P)Questions
Is there a KiCad symbol and footprint for the 93LC46B/P?
Yes. The symbol is Memory_EEPROM:93LCxxB and the footprint Package_DIP:DIP-8_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 93LC46B/P?
PDIP-8, with 8 pins. Its footprint is drawn on this page.
Where is the 93LC46B/P datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the 93LC46B/P?
JLCPCB lists it as part C1349220, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 93LC46B/P?
Parts like it in the library: the AT93C66N by HGSEMI, the 93LC56B-I/P by Microchip Technology, the FT93C46A-UDR-B by FMD and the 25LC040/P by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the 93LC46B/P?
10 boards in 10 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8AT93C66N
DIP-8-40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 100 Years 10ms 2MHz 4Kbit SPI DIP-8 EEPROM ROHSHGSEMIEEPROM93LC56B-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 2Kbit 2MHz 6ms Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROMFT93C46A-UDR-B
DIP-8-40℃~+85℃ 1,000,000 cycles 1.8V~5.5V 100 Years 10ms 1Kbit 2MHz Built-in write enable latch (WEL) SPI DIP-8 EEPROM ROHSFMDEEPROM25LC040/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 2MHz 4Kbit 5ms Hardware write protection function、Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM93C46B/P
PDIP-8-40℃~+125℃ 1,000,000 cycles 1Kbit 200 Years 2MHz 2ms 4.5V~5.5V SPI Software write protection function、Power-down/Power-up protection circuit PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM93C86-E/P
PDIP-8-40℃~+125℃ 1,000,000 cycles 10ms 16Kbit 200 Years 2MHz 4.5V~5.5V Hardware write protection function、Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM93LC46/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 1Kbit 2.5V~5.5V 200 Years 2MHz 4ms Hardware write protection function、Noise suppression function、Built-in power-on reset (POR) SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM93LC66-I/P
PDIP-8-40℃~+85℃ 1,000,000 cycles 2.5V~5.5V 200 Years 2MHz 4Kbit 4ms Built-in write enable latch (WEL)、Power-down/Power-up protection circuit SPI PDIP-8 EEPROM ROHSMicrochip TechnologyEEPROM