Chemical content HEF4051BTT

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Type number	Package	Package description	Total product weight
HEF4051BTT	SOT403-1	TSSOP16	53.54573 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
935278637118	17	1	260		1	235			Bangkok, Thailand; Suzhou, China; Shanghai, China; Jiangyin, 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	0.11685	77.90000	0.21822
	Polymer	Acrylic resin	Proprietary	0.02280	15.20000	0.04258
		Resin system	Proprietary	0.01035	6.90000	0.01933
		subTotal		0.15000	100.00000	0.28013

Die	Doped silicon	Silicon (Si)	7440-21-3	0.92384	100.00000	1.72534
		subTotal		0.92384	100.00000	1.72534

Lead Frame Material	Copper alloy	Copper (Cu)	7440-50-8	19.89363	97.47000	37.15259
		Iron (Fe)	7439-89-6	0.48984	2.40000	0.91481
		Phosphorus (P)	7723-14-0	0.00612	0.03000	0.01144
		Zinc (Zn)	7440-66-6	0.02041	0.10000	0.03812
		subTotal		20.41000	100.00000	38.11696

Mould Compound	Additive	Non hazardous	Proprietary	1.48896	4.70000	2.78073
	Filler	Silica fused	60676-86-0	25.02720	79.00000	46.73986
	Flame retardant	Magnesium Hydroxide (Mg(OH)2)	1309-42-8	1.90080	6.00000	3.54986
	Pigment	Carbon black	1333-86-4	0.06336	0.20000	0.11833
	Polymer	1,4-Bis(methoxymethyl)benzene/phenol copolymer	26834-02-6	1.26720	4.00000	2.36658
		Non hazardous	Proprietary	1.29888	4.10000	2.42574
		Tetramethylbiphenyl diglycidyl ether	85954-11-6	0.63360	2.00000	1.18329
		subTotal		31.68000	100.00000	59.16439

Pre-Plating	Pure metal layer	Gold (Au)	7440-57-5	0.00300	1.00000	0.00560
		Nickel (Ni)	7440-02-0	0.29100	97.00000	0.54346
		Palladium (Pd)	7440-05-3	0.00600	2.00000	0.01121
		subTotal		0.30000	100.00000	0.56027

Wire	Pure metal	Copper (Cu)	7440-50-8	0.08189	100.00000	0.15293
		subTotal		0.08189	100.00000	0.15293

		total		53.54573	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.