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EFM8BB51F8I-C-QFN20R

ACTIVE
Silicon Labs

CIP-51 8051 Busy Bee Microcontroller IC 8-Bit 50MHz 8KB (8K x 8) FLASH 20-QFN (3x3)

In full production. No end-of-life notice on file.

EFM8BB51F8I-C-QFN20R is a CIP-51 8051 Busy Bee Microcontroller IC 8-Bit 50MHz 8KB (8K x 8) FLASH 2 from Silicon Labs. 1 authorized distributor quotes it on TracedParts, from RM 2.15 at quantity 1, with 71,059 units in stock for immediate despatch. Figures come from the distributors' own APIs, pulled in the catalogue snapshot of 2026-09-25, and are indicative rather than a binding quote.

RoHS COMPLIANTREACH Surface Mount SMD
BEST PRICE @1
RM 2.15
DigiKey · authorized
TOTAL STOCK
71,059
1 source
SHORTEST LEAD
stock
ships from warehouse
AUTHORIZED
1 / 1
tier 1 sources

Who has EFM8BB51F8I-C-QFN20R in stock, and what does it cost?

1 authorized distributor · pulled from their APIs in the catalogue snapshot of 2026-09-25
QTY pcs
DISTRIBUTOR
STOCK
MOQ
PRICE BREAKS · MYR
LEAD
@250 PCS
TIER 1 - AUTHORIZED DISTRIBUTORfranchised - full warranty - paperwork QA will accept
AUTH
71,059
5,000
5k+2.1478
stock
ex-warehouse
-
below MOQ 5,000
Buy ↗
What 250 pcs actually costs landed in Malaysia, duty and SST included: RM 626.84 RM 2.5074 per unit, DDP · estimate Open estimator →

What are the specifications of EFM8BB51F8I-C-QFN20R?

24 parameters▾
Device specification
DigiKey ProgrammableNot Verified
Core ProcessorCIP-51 8051
Core Size8-Bit
Speed50MHz
ConnectivityI2C, SMBus, SPI, UART/USART
PeripheralsBrown-out Detect/Reset, POR, PWM, WDT
Number of I/O16
Program Memory Size8KB (8K x 8)
Program Memory TypeFLASH
RAM Size1.25K x 8
Voltage - Supply (Vcc/Vdd)1.8V ~ 5.5V
Data ConvertersA/D 16x12b SAR
Oscillator TypeInternal
Operating Temperature-40°C ~ 125°C (TA)
Ordering & compliance
ManufacturerSilicon Labs
CategoryMicrocontrollers
PackageSurface Mount
MountingSurface mount
LifecycleACTIVE
RoHSCompliant
Moisture levelNot applicable (through hole)
PackagingTape & reel
Country of origin
HS code

Where can I download the EFM8BB51F8I-C-QFN20R datasheet?

link supplied by DigiKey▾
PDF
EFM8BB51F8I-C-QFN20R datasheet
link supplied by DigiKey · Silicon Labs · English
Open datasheet ↗

This is the datasheet link the distributor returned with the part record. We pass it through as they gave it, and we have not opened it - there are more than 300,000 of these and we verify only the ones we curate by hand. If it does not resolve, that is the distributor’s record, not the part.

What does EFM8BB51F8I-C-QFN20R cost landed in Malaysia?

Malaysia · DDP · HS ▾
Goods
Freight · express 2 d
Import duty · 0 % (ITA-exempt)
Sales & service tax · 6 %
Customs clearance
Landed total

Estimate only. The correct HS classification for your import is your responsibility - see terms of service.

Is there a CAD symbol and footprint for EFM8BB51F8I-C-QFN20R?

4 downloads▾
SCHEMATIC SYMBOL · .libPCB FOOTPRINT · .kicad_mod 3D MODEL · .stepSPICE · .mod

What can I use instead of EFM8BB51F8I-C-QFN20R?

3 in microcontrollers▾
CY8C20534-12PVXIT
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M8C PSOC™1 CY8C20xxx Microcontroller IC 8-Bit 12MHz …
11,160
RM 2.15
STM8S001J3M3TR
STMicroelectronics
STM8 STM8 Microcontroller IC 8-Bit 16MHz 8KB (8K x 8…
11,030
RM 2.12
ATTINY212-SSN
Microchip Technology
AVR tinyAVR™ 1, Functional Safety (FuSa) Microcontro…
11,336
RM 2.18

Nearest peers by price within the same category. Confirm the parameters before you substitute - these are not guaranteed drop-in replacements.

Which parts are similar to EFM8BB51F8I-C-QFN20R?

8 parts▾
UPD78F9234CS-CAA-AEFM8BB52F16G-C-QFN32RATTINY24-20SSULPC802UKZMC9S08LL16CLFEFM8BB21F16I-C-QFN20RMSP430G2212IPW20RMSP430G2202IPW20R

Common questions about EFM8BB51F8I-C-QFN20R

7 questions▾
Is EFM8BB51F8I-C-QFN20R in stock?
Yes. 71,059 units are in stock across 1 authorized distributor (DigiKey), as of the catalogue snapshot of 2026-09-25.
How much does EFM8BB51F8I-C-QFN20R cost?
RM 2.1478 is the lowest unit price on this page, from DigiKey. Prices fall as quantity rises; the full price break ladder is in the quotes table. Figures come from the distributor API and are indicative, not a binding quote.
Who supplies EFM8BB51F8I-C-QFN20R?
DigiKey. It is authorized, franchised distributor quoting through its own API. TracedParts carries no broker or open-market listings.
How old are these prices?
The catalogue is re-pulled from the distributors' APIs once a day, and the line under the Quotes heading says which pull the figures on this page came from. Prices and stock can move between pulls, so treat them as indicative and confirm on the distributor's site before you order.
Who quoted these prices?
Every row on the site comes from an authorized, franchised distributor through its own API: DigiKey, Mouser or element14. There are no broker or open-market listings on TracedParts. If a source ever changes, the row will say so.
Why do you show the source before the price?
Because who sold it decides what happens at incoming inspection, and a table sorted by price alone hides that. Rows are grouped by the distributor's status first and ordered by unit price inside the group.
Why are prices in ringgit?
Distributors quote in US dollars. TracedParts converts to MYR at a fixed reference rate that is printed on the page, not a live FX feed, so the ringgit figure is a sourcing estimate rather than the amount you will be billed.