Modern Engineering Material Ltd.

In point of the miniaturization of electronic parts and the field environment reliability, the role of raw materials for key electronic
parts is growing in importance.
With the advanced technologies based on our distinctive know-how, we are manufacturing materials for connectors with the
excellent spring property and the high long-period reliability : that can better meet customer's various requirement.

Copper alloy for connectors

Products	Product code	Examples fpr use
Products	Product code	B to B	FPC	Battery terminals	Coaxials	Module for camera (CMOS soket)	Memory cards	Jack	Connector contact for plug
High strength 10%tin phosphor bronze	C5240R	○	○	○	○	○	○	○
High-tin phosphor bronze for springs	C5210R	○	○	○	○	○	○
Low-tin phosphor bronze	C5191R	○	○
	C5102R	○	○
	C5111R
Nickel silver for springs	C7701R						○ （shell）
Nickel silver	C7521R						○ （shell）
High strength copper nickel tin alloy	MX96R		○	○	○	○		○
High strength and high electrical conductivity copper alloy	M702UR			○				○
High strength and high electrical conductivity copper alloy	M702SR	○	○	○				○
Various type of wire product	C5191W								○
	C2600W								○
	C5071W								○

With the products and manufacturing technology based on the wealth of knowledge and years of experience as for alloy products,
we have been producing and expanding various materials for electronic parts.
With high quality and reliability, our products are widely used by the world's top electronic companies.

Copper alloy for electronic parts

Products	Product code	Examples fpr use
Products	Product code	Relay	Switches	Micromotors	Shielding cases	Crystal oscillators	Springs	Tableware・coins for arcade game
High strength10%tin phosphor bronze	C5240R	○	○
High-tin phosphor bronze for springs	C5210R		○
Low-tin phosphor bronze	C5191R	○
	C5102R
	C5111R
Copper alloy for lead frames	MF202R	○		○
Nickel silver for springs	C7701R		○	○	○	○
Nickel silver	C7521R				○	○
Nickel silver	C7541R							○
nickel silver series	MB115R	○		○
High strength copper nickel tin alloy	MX96R	○	○	○
High strength copper nickel tin alloy	MX215R	○	○	○
High strength and high electrical conductivity copper alloy	M702UR	○
	M702CR	○
	M702SR	○
Various type of wire product	C5212W						○
Various type of wire product	C5191W						○

Various and severe properties are required for IC lead frame materials, such as thermal conductivity, stiffness, repeated bendability, corrosion resistance, platability, solderability, stamping formability, thermal expansion property and so on. In meeting the balance of those requirements, our lead frame material, represented by MF202, are used for most advanced IC's all over the world. This attests to their fame and high quality.

Copper alloy for IC lead frames		Copper alloy for IC lead frames
Products	Product code	Examples for use
		IC	Transistors
Low-tin phosphor bronze	C5191R		○
Copper alloy for lead frames	MF202R	○	○

Products	Product code	CDA alloy No.	Examples for applications
High strength 10%tin phosphor bronze	C5240R	C52400	connectors,springs for relay contacts,switches,jack
High-tin phosphor bronze for springs	C5210R	C52100	connectors,volume sliders, leaf springs for communicating devices, springs for relay contacts
Low-tin phosphor bronze	C5191R	C51900	connectors, springs for electrical devices,volume sliders,bellows,diaphragms,leaframes for semiconductors,bellows,diaphragms,leaframes for semiconductors
	C5102R	C51000
	C5111R	C51100
High-tin phosphor bronze	C5212R	C52100
Copper alloy for leadframes	MF202R	C50710	leadframes for semicornductors, connectors,commutators,springs for relay contacts
Nickel silver for springs	C7701R	C77000	springs for relays, springs for electrical devices,springs for measuring instruments, connector shells
Nickel silver	C7521R	C75200	various spring materials,cases for crystal oscillator,volume sliders,ornaments,foreign-style tableware,medical apparatus,building materials, shielding cases
Nickel silver	C7541R	C75400
Copper alloy of nickel silver series	MB115R	C73150	springs for electrical devices,connectors,relays,various materials for drawing
High strength copper nickel tin alloy	MX96R	C72700	connectors, relays sliding switches, volumes
High strength copper nickel tin alloy	MX215R	C72950	brushes for micromotors, connectors
High-strength,high-electrical conductivity copper alloy	M702CR	C70230	connectors,relays
High-strength,high-electrical conductivity copper alloy	M702SR	C70230	connectors,relays
Various type of wire product	C5212W	C52100	connectors,coil springs, spring washers, spiral springs
	C5191W	C51900	connectors,coil springs, spring washers, spiral springs
	C2600W	C26000	connectors,jamper line
	C5071W	C50710	connectors, screws for fasteners,metal net
Plated alloys	-	-	contact materials for electronic devices, connectors
Deformed wire	-	-	connector terminals