Semiconductor product attributes

Semiconductor records carry more conditional data than almost any other category. A MOSFET's on-resistance, a diode's forward voltage and a transistor's current rating all depend on the test conditions printed next to them. Supplier summaries often keep the number and drop the gate voltage, drain current or case temperature, which makes two devices look equivalent when they are not.

Packages are named inconsistently across the industry. The same physical outline can appear as a JEDEC name, a JEITA name and several manufacturer-specific case codes, while the pin count and tab arrangement vary within one family. Keeping a normalized package value and the manufacturer's own package name side by side lets a buyer search by either without losing precision.

Supply and handling data are as important as electrical data. Lifecycle status, last-time-buy dates, moisture sensitivity level, packaging form, automotive qualification and export classification decide whether a part can be designed in, stored, assembled and shipped. Country of origin can mean the wafer fab or the assembly site, and customs and customer questions do not always refer to the same one.

The semiconductors attribute template

18 candidate fields in 4 groups, ordered the way a record gets built: identify the item, capture its specifications, then record fit and the evidence behind any claim. 7 are marked Core: without them the item cannot be identified or filtered. Example values show the expected format only; they do not describe a real SKU.

Identity

Which exact item, variant and pack this record describes.

Check before use: Preserve leading zeros and punctuation, validate against the manufacturer record, and check the GTIN check digit and packaging level before linking.

Attribute	Type	Priority	Example format
Manufacturer Part Number (MPN) manufacturer_part_number_mpn	Identifier	Core	NFX5522-DPK
GTIN-14 / UPC gtin_14_upc	Identifier	Core	10614141600042

Technical specifications

Measured or rated values that must travel with their unit and test conditions.

Check before use: Store the number and unit separately. Convert only when the source unit and test conditions are known.

Attribute	Type	Priority	Example format
Operating Junction Temperature (Tj) operating_junction_temperature_tj	Text · °C	Core	-55 °C to +175 °C
Drain-Source Breakdown Voltage (Vdss) drain_source_breakdown_voltage_vdss	Number · V	Buyer decision	55
Continuous Drain Current (Id) @ Tc = 25°C continuous_drain_current_id_tc_25_c	Number · A	Buyer decision	42
Rds(on) Max @ Id, Vgs rds_on_max_id_vgs	Number · mΩ	Buyer decision	22 mΩ @ Id 25 A, Vgs 5 V
Total Gate Charge (Qg) Max @ Vgs total_gate_charge_qg_max_vgs	Number · nC	Buyer decision	48 nC @ Vgs 5 V
Moisture Sensitivity Level (MSL) moisture_sensitivity_level_msl	Controlled list	Channel / evidence	1 (Unlimited)

Selection attributes

The type, material and option choices buyers filter and compare on.

Check before use: Map supplier wording to a governed vocabulary only after checking the source text and which variant it applies to.

Attribute	Type	Priority	Example format
Device Type device_type	Controlled list	Core	MOSFET, N-Channel
Package / Case package_case	Controlled list	Core	TO-252-3, DPAK (2 Leads + Tab)
Supplier Device Package supplier_device_package	Text	Core	DPAK
Packaging (Shipping Form) packaging_shipping_form	Controlled list	Core	Tape & Reel (TR)
Die Technology die_technology	Controlled list	Buyer decision	Silicon
Product Lifecycle Status product_lifecycle_status	Controlled list	Channel / evidence	Active

Evidence & compliance

Listings, standards, classifications and origin claims that need a document behind them.

Check before use: Link the manufacturer document or label with its edition or date. Never copy a certification from a neighboring SKU.

Attribute	Type	Priority	Example format
Automotive Qualification automotive_qualification	Controlled list	Channel / evidence	AEC-Q101 Qualified
RoHS / REACH SVHC Status rohs_reach_svhc_status	Controlled list	Channel / evidence	RoHS compliant; no SVHC above 0.1 % w/w
ECCN eccn	Identifier	Channel / evidence	EAR99
Country of Origin (Assembly / Test) country_of_origin_assembly_test	Controlled list	Channel / evidence	Philippines

Normalize supplier values

The same value arrives in many spellings. Map each raw string to one governed value, and keep the raw text beside it so a reviewer can see what the supplier actually wrote.

Often missing from supplier files

These fields are commonly absent from price lists and basic feeds, even though the information usually exists in a datasheet, label or installation manual. Treat an empty value as a request for evidence, not as permission to fill it from a similar model.

• Country of Diffusion (Wafer Fab)
• Rds(on) Test Conditions (Vgs, Id)
• Moisture Sensitivity Level and Floor Life
• Last-Time-Buy Date / Discontinuance Notice
• Automotive Qualification (AEC-Q100 / AEC-Q101)

Questions the record must answer

Buyers and counter-sales reps choosing semiconductors ask questions like these. Each one needs a specific field, sourced for the exact variant.

• Will this MOSFET be fully on with a 5 V gate drive from my microcontroller?
• Does this DPAK part fit the footprint of the one we are replacing?
• Is this device still active, or is a last-time-buy date announced?
• How long can the reel sit out after opening before it needs baking?

From supplier file to record

1. Resolve identity first. Link the supplier SKU, manufacturer part number and packaging identifiers without merging distinct variants or pack sizes.
2. Extract with the source attached. Pull values from rows, tables and datasheets, keeping the raw text, unit and page or row reference.
3. Map to your classification. Assign the ETIM, ECLASS, UNSPSC or internal class your company licenses, and keep the supplier's original terms.
4. Review, sync and watch. Hold conflicts and safety-related values for a category expert, write approved values to ERP or PIM, and recheck when the supplier sends a new file.

For the full method, see how to build a category attribute template and the category catalog gap audit.

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