Chemical content 74HC4520PW

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Type number	Package	Package description	Total product weight
74HC4520PW	SOT403-1	TSSOP16	62.93945 mg

12NC	Version	Pb-free soldering			Pb soldering			Number of processing cycles	Assembly site	RHF-indicator
12NC	Version	MSL	PPT	MPPT	MSL	PPT	MPPT	Number of processing cycles	Assembly site	RHF-indicator
935189130118	12	1	260		1	235			Bangkok, Thailand; Suzhou, China; Nijmegen, Netherlands

Subpart	Material group	Substances	CAS number	Mass(mg)	Mass(%) of subpart	Mass(%) of total product
Adhesive	Filler	Silver (Ag)	7440-22-4	0.28044	77.90000	0.44557
	Polymer	Acrylic resin	Proprietary	0.05472	15.20000	0.08694
		Resin system	Proprietary	0.02484	6.90000	0.03947
		subTotal		0.36000	100.00000	0.57198

Die	Doped silicon	Silicon (Si)	7440-21-3	2.25451	100.00000	3.58204
		subTotal		2.25451	100.00000	3.58204

Lead Frame Material	Copper alloy	Copper (Cu)	7440-50-8	21.67733	97.47000	34.44156
		Iron (Fe)	7439-89-6	0.53376	2.40000	0.84805
		Phosphorus (P)	7723-14-0	0.00667	0.03000	0.01060
		Zinc (Zn)	7440-66-6	0.02224	0.10000	0.03534
		subTotal		22.24000	100.00000	35.33555

Mould Compound	Additive	Non hazardous	Proprietary	1.77190	4.70000	2.81525
	Filler	Silica fused	60676-86-0	29.78300	79.00000	47.32008
	Flame retardant	Magnesium Hydroxide (Mg(OH)2)	1309-42-8	2.26200	6.00000	3.59393
	Pigment	Carbon black	1333-86-4	0.07540	0.20000	0.11980
	Polymer	1,4-Bis(methoxymethyl)benzene/phenol copolymer	26834-02-6	1.50800	4.00000	2.39595
		Non hazardous	Proprietary	1.54570	4.10000	2.45585
		Tetramethylbiphenyl diglycidyl ether	85954-11-6	0.75400	2.00000	1.19798
		subTotal		37.70000	100.00000	59.89884

Pre-Plating	Pure metal layer	Gold (Au)	7440-57-5	0.00903	3.00000	0.01435
		Nickel (Ni)	7440-02-0	0.27782	92.30000	0.44141
		Palladium (Pd)	7440-05-3	0.00933	3.10000	0.01483
		Silver (Ag)	7440-22-4	0.00482	1.60000	0.00765
		subTotal		0.30100	100.00000	0.47824

Wire	Pure metal	Copper (Cu)	7440-50-8	0.08394	100.00000	0.13336
		subTotal		0.08394	100.00000	0.13336

		total		62.93945	100.00000	100.00000

Disclaimer
All information in this document is furnished for exploratory or indicative purposes only. All information in this document is believed to be accurate and reliable. However, Nexperia does not give any representations or warranties as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Nexperia may make changes to information published in this document at any time and without notice. Minor deviations may occur in the products from different manufacturing location. This document supersedes and replaces all information supplied prior to the publication hereof. Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights.

Disclaimer

All information in this document is furnished for exploratory or indicative purposes only. All information in this document is believed to be accurate and reliable. However, Nexperia does not give any representations or warranties as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Nexperia may make changes to information published in this document at any time and without notice. Minor deviations may occur in the products from different manufacturing location. This document supersedes and replaces all information supplied prior to the publication hereof. Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights.

Restricted substances declaration

The many processes used to manufacture semiconductors are complex and delicate, and require a variety of specialized chemicals and materials. To protect our employees and the environment, we have several programs in place that regulate our use of hazardous chemicals or "substances of concern". In fact, we follow some of the toughest practical standards in the industry.

We carefully monitor our use of substances categorized as restricted, hazardous, or relevant, and have committed, as part of our near-term Sustainability Program, to achieving a 100% reduction of all restricted and hazardous substances that aren’t critical use. We track our usage of chemicals in our company-wide Chemical Management program, which registers and classifies the chemical substances we handle. Any use or emission of restricted or hazardous substances must be covered by internal dispensation, so we are searching for alternatives as quickly as possible.

The Nexperia List of Hazardous Substances in Products and Packaging specifies substances that are not permitted in materials, parts, semi-finished goods and products at levels above our established threshold to ensure that no Nexperia products put on the market contain any substances that are restricted by law or other regulations, including the European Union’s Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment (commonly known as RoHS).

While most substances on this list are not permitted by law, a number of them are not permitted by Nexperia in view of upcoming legislation, their impact on the environment or on health & safety.

The Nexperia List of Hazardous Substances in Products and Packaging also contains a number of Restricted Substances. Use of these substances is allowed, but any use of these substances must be reported above the declaration threshold as specified in this list. Most substances are placed on this list because of health risks in their use and/or processing. Others are placed on this list because they limit recycling, because they are scarce or they have for instance a high environmental impact in mining.