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JRready Molex Micro-fit 3.0 Connector Kit 2 4 6 Circults MX3.0 Power Plug Receptacle 43020 Series 20-24AWG Wire Crimp Terminals 43031 Series Pins Sockets Connectors 3.0mm Pitch 196Pcs ST6516
JRready

JRready Molex Micro-fit 3.0 Connector Kit 2 4 6 Circults MX3.0 Power Plug Receptacle 43020 Series 20-24AWG Wire Crimp Terminals 43031 Series Pins Sockets Connectors 3.0mm Pitch 196Pcs ST6516

Bottom line: The JRready Molex Micro-fit 3.0 Connector Kit 2 4 6 Circults MX3.0 Power is a specs-and-price decision rather than a crowd-consensus one in the accessories category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Backed by JRready's warranty and support channels

Cons

  • ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored JRready Molex Micro-fit 3.0 Connector Kit 2 4 6 Circults MX3.0 Power… using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. JRready's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • JRN009(Micro-Fit 3.0) SERIES CONNECTOR: 3.0mm pitch connector is made of PA66, Flame retardant grade is UL94-V0. The operating temperature range is from -40℃ to +105℃. Under environmental conditions of 23℃ ± 5℃, the temperature rise at 7A current is no more than 30℃. The connector can be mated and unmated over 50 times.
  • CONNECTOR DESIGN: The locking housing design ensures a secure connection; keying polarized housing prevents accidental mis-mating; independent cavity design fully isolates the terminals, preventing potential damage during handling and mating.The connector features a small form factor, making it ideal for space-saving applications and high-density layouts.
  • Contact Design: The 20-24AWG contact is made of tin-plated phosphor bronze, featuring a dual-point contact design and secure locking mechanism to reduce detachment risks from vibration and external forces. It is easy to install with crimping, highly durable, and ensures low contact resistance and excellent electrical performance.The kit includes a large quantity of terminals for crimping practice or as spares, providing a great user experience, especially for beginners.
  • JRREADY TOOL for JRN009 SERIES CONNECTOR: The crimper: ACT-SY-JRN009S. Pin removal tool：JRconDRK-D120P&JRconDRK-D145P: enhanced for a superior grip with an enlarged size and protective cover; JRDDS-D120&JRDDSD145: high strength and hardness, magnetic deburring and polishing ,upgrades metal handle; DAP-D120&DAP-D145: Hardened alloy steel and innovative push rod design. You can buy these tool at JRready Store.You can buy these tool at JRready Store.
  • COMPATIBLE WITH MOLEX MODELS: 2 pin connector-43020-0201/43025-0200; 4pin connector-43020-0401/43025-0400; 6 pin connector-43020-0601/43025-0600; Contacts pin: 43031-0001/43031-0007，socket: 43030-0001/43030-0007.

Full Specifications

BrandJRready
Color2 4 6 Pin
ModelST6516
TerminalPin and Socket
Unit Count196 Count
Part NumberST6516
Material TypePlastic
Connector TypeCrimp
Maximum Voltage30 volts
Number of Items196
Connector GenderMale and Female
Contact MaterialPhosphor Bronze
Vibration/RumbleYes
Specification MetUL
Insulation MaterialNylon
Insulation Material TypeNylon

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JRready Molex Micro-fit 3.0 Connector Kit 2 4 6 Circults MX3.0 Power Plug Receptacle 43020 Series 20-24AWG Wire Crimp Terminals 43031 Series Pins Sockets Connectors 3.0mm Pitch 196Pcs ST6516 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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JRready Molex Micro-fit 3.0 Connector Kit 2 4 6 Circults MX3.0 Power Plug Receptacle 43020 Series 20-24AWG Wire Crimp Terminals 43031 Series Pins Sockets Connectors 3.0mm Pitch 196Pcs ST6516
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