PRODUCT DESCRIPTION
Rare Hewlett-Packard ceramic hybrid substrate with a large gold-plated center section, model 5181-2742 REV A.
This type of HP hybrid module base was used in precision RF, instrumentation, aerospace, and high-reliability systems.
Features a premium gold-plated thermal or bonding surface, surrounded by ceramic traces and connection pads—typical of HP’s high-end engineering modules from the 1980s–1990s.
An excellent collector’s item or display piece, highly valued for its gold content, quality construction, and rarity.
✔ Genuine Hewlett-Packard component
✔ Large gold-plated center plate
✔ Ceramic hybrid substrate
✔ Engineering-grade, rare part
✔ Clean and well preserved
✔ Ideal for collectors, display, or gold recovery hobbyists
SPECIFICATIONS
• Manufacturer: Hewlett-Packard (HP)
• Model: 5181-2742 REV A
• Package: Ceramic hybrid substrate with gold plate
• Material: Ceramic + heavy gold plating
• Condition: Vintage, untested
• Use: Collecting, display, RF/microwave module base, precious metal recovery

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