34566-0303

ICC Number:	MOL34566-0303
Manufacturer:	Molex
Manufacturer Number:	34566-0303
Datasheet:	Datasheet
ECAD Model:

Description:

2.54mm Pitch, MX123 Female Receptacle Housing, Keying Option C, Wire Dress Option 0, 73 Circuits, Blue TPA

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Specifications

Attribute	Value
Product Category:	Connector Accessories Connector Housings
Manufacturer:	Molex
Manufacturer Part Number:	Molex 34566-0303
Housing Material:	Nylon
Number of Rows:	4
Pitch:	2.54 mm
Polarization:	Yes
Number of Positions:	73
Housing Color:	Blue
Connector Housing Type:	Receptacle
Operating Temperature:	-40 to 125 °C
SKU:	MOL34566-0303

Detailed Description

Introducing the 34566-0303, a high-performance connector designed for power applications. This blue MX123 receptacle features a durable nylon housing and is rated for 25A and 11A. With 73 contacts arranged in 4 rows and a pitch of 2.54mm, it offers reliable connectivity in a compact design. Engineered for versatility, this connector is polarized for easy mating, with a secure lock to the mating part. RoHS compliant and operating temperature range of -40 to 125°C, it ensures safety and reliability in a variety of environments. Perfect for wire to board applications, the 34566-0303 is a dependable solution for your power connectivity needs.

Frequently Bought Together

Product	Part #	Description	Stock
	Molex 19071-0136	InsulKrimp Ring Tongue Terminal for 8 AWG Wire, Carton
	Molex 33001-5002	MX150 Female Terminal for Mat-Sealed Connectors, Silver Plating, 20-18 AWG, Left Reel Payoff
	Molex 33467-0004	2.54mm Pitch MX64 Terminal, Gold (Au) Plating, 22 AWG, Left Reel Payoff, Also used with MX123 Female Receptacle Housing
	Molex 33467-0005	2.54mm Pitch MX64 Terminal, Gold (Au) Plating, 20-18 AWG, Right Reel Payoff, Also used with MX123 Female Receptacle Housing
	Molex 33472-1206	MX150 Mat-Sealed Female Connector Assembly, Dual Row, 12 Circuits, Keying Option A, with Connector Position Assurance, Black
	Molex 33472-4806	MX150 Mat-Sealed Female Connector Assembly, Dual Row, 8 Circuits, Keying Option A, with Connector Position Assurance, Black
	Molex 34345-0001	MX150 Sealed Cavity Plug
	Molex 34565-0003	MX123 73/80 Circuit Dress Cover
	Molex 34576-0703	2.54mm Pitch, MX123 Female Receptacle Housing, Keying Option G, Wire Dress Option 0, 56 Circuits, Blue TPA
	Molex 34586-0001	MX123 0.64mm Grommet Seal Plug
	Molex 34770-0402	MX150 Mat-Sealed Female Connector Assembly, Single Row, 4 Circuits, Keying Option B, with Connector Position Assurance, Light Gray
	Molex 42815-0031	Mini-Fit Sr. Crimp Terminal, Female, 8 AWG, Tin (Sn), USE NYE LUBE ON MATING SURFACES

Product Change Notice

Effective Date	Description of Change	Download
04/15/2026	517169 - End of Life. LTB 9/30/25	Download
09/30/2025	516520 - Equipment Transfer, Production Transfer or Rearrangement. Molex has created this PCN to group the complete Mx123 Large footprint series together for better control over implementation. Previously the part numbers were mentioned in the transfer PCN's 514557 & 514558 and due to strategy they were retracted (516511). The molds are transferred from Lincoln, USA. The assembly line is already in Guad 2. China will continue support the EU/Asia demand.	Download
05/02/2025	516742 - Retraction of 513492. This retraction is to annunce that this PCN “513492” did not take place and Molex continues with the same compounder.	Download
02/28/2025	516511 - Partial Retraction of PCN 514557 & 514558. in these PCNs communication on 11/2023 will maintain the small footprint series whic is already in production at guadalajara site 2 plant we will create a new pcn (516520) in which we will manage the MX123 large footprint series and its implementation plan.	Download
09/02/2024	514557 - Equipment/Production Transfer or rearrangement. his notification is to inform you that Molex will be move molds and assembly line transfer. This PCN will move from Lincoln, Nebraska to Guadalajara, Mexico (site 2) and it was made to provide the best delivery to locally production products. We are starting these transfers in later Q3 2024. No product changes will be made as part of this change.	Download
01/05/2024	514647 - Retraction of PCN 512047. This a retraction PCN for the part numbers mentioned from PCN 512047. These parts number will be part of Phase 3 for series MX123 and were repeated in another PCN(514557). The intention is to have each part number in one PCN for customer visibility and clarity.	Download
07/21/2023	513492 - Change Supplier. This letter is to inform you that in order to re-balance global supply chains, Molex will qualify a new compounder location to be used by the existing resin supplier.	Download
12/24/2022	512047 - Equipment Transfer, Production Transfer or Rearrangement. This notification is to inform you about an equipment transfer that has been used to manufacture impacted part(s). Equipment has been moved to different site/ location/ premises. No changes will be made to product as part of this change.	Download
08/17/2022	512449 - Retraction of PCN 510937. retraction is due to the project not moving forward at this time, the compounding location for SPS/PA66 grade material will not be moving from the current sub-supplier. if it is deemed that this project will again move forward at a later date a new PCN will be created & sent to impacted customers.	Download
07/29/2022	510937 - Change Supplier. in efforts to mitigate the supply risk of resin material our current supplier for SPS/PA66 grade of material will be transitioning to a new Sub-Supplier fir compounding.	Download
08/01/2020	508485 - Warehouse transfer. moving from Lincoln (duns# 967495487) to Bolingbrook (Duns# 103340709)	Download
09/22/2014	GCM 10649862 - New, Modified, Or Replacement Tooling.	Download
08/11/2014	GCM 10622037 - Product Component Change.	Download