Acoustic & Ranging
Precision Semiconductor Matrix
Featured Industrial Optoelectronic Chips & Sensor Solutions
Serving original equipment manufacturers (OEMs), precision engineering laboratories, and sensor assembly houses throughout Milan, Turin, Bologna, Florence, and Genoa. Discover our high-yield unpackaged bare photodiode wafers, planar photodetector elements, and complementary sensing modules.
E-Mobility Automotive
New Energy Automobile Power Battery Temperature Sensor NTC 100K
Piezo Transducers
Piezo Ceramic Element PZT Long Strip Ultrasonic Transducer Wafer
Core Semiconductor
Linear Silicon Photocell Chip 10*10 Wafer SGPIN400 Bare Die
Thermal Metrology
PT1000 Platinum Resistance Silicone High-Temp Waterproof Sensor
Precision RF & Interconnect
36AWG Ultra-Fine Micro Coaxial Cable 50Ω Low-Loss Shielded Wire
Industrial Optics
Diffuse Reflection Fiber Optic Sensor Probe FR-D310 M3/M4/M6
Thermal Dissipation
Extruded Aluminum IC Chip Radiator 28*14*11MM Heat Sink Cooler
2016
Established Year
51-100
Skilled Workforce
8+ Yrs
Export Experience
4.7 / 5
Buyer Rating
10 Pcs
Wafer Prototype MOQ
100%
AOI Probe Tested
Engineering Whitepaper
Semiconductor Architecture of Bare Silicon Photodiode Wafers for Advanced Optical Sensing
In optical metrology and high-speed industrial feedback loops, packaged optoelectronic sensors often present severe physical bottlenecks: parasitic packaging inductance, high profile form factors, thermal mismatch between hermetic headers and ceramic carriers, and optical attenuation from uncalibrated epoxy or glass windows. For advanced research centers and manufacturers across Italy, bare silicon photodiode wafers (unpackaged dice) represent the definitive engineering substrate for hybrid multi-chip modules (MCM), chip-on-board (COB) architectures, and ultra-compact optical receiver assemblies.
Epitaxial Substrate Physics
Our bare wafers utilize ultra-pure, high-resistivity Float Zone (FZ) and Czochralski (CZ) crystalline silicon, grown in ⟨100⟩ or ⟨111⟩ crystal orientations. By strictly regulating background dopant concentrations (n-type phosphorus or p-type boron), we achieve wide intrinsic depletion widths under reverse bias, guaranteeing high charge collection efficiency across both visible and near-infrared (NIR) spectra.
Surface Passivation & ARC
Thermally grown silicon dioxide (SiO&sub2;) combined with plasma-enhanced chemical vapor deposition (PECVD) silicon nitride (Si&sub3;N&sub4;) creates dual-layer anti-reflective coatings (ARC). This passivation suppresses dangling surface bonds, eliminating surface recombination velocities and cutting dark current (Id) to picoampere levels at room temperature.
Wire-Bondable Metallization
Anode contacts feature pure titanium/platinum/gold (Ti/Pt/Au) or aluminum-silicon-copper (Al-Si-Cu) metallization suitable for high-speed thermosonic gold ball bonding or ultrasonic aluminum wedge bonding. Cathode back-metallization (Ti/Ni/Ag or Au) guarantees low contact resistance during eutectic die-attach or silver glass paste mounting.
| Parameter | Standard Silicon PIN Wafer | UV-Enhanced Bare Wafer | NIR-Enhanced High-Speed Die | Testing Conditions |
|---|---|---|---|---|
| Spectral Range (λ) | 400 nm – 1100 nm | 190 nm – 1100 nm | 700 nm – 1100 nm | T = 25°C, Sensitivity cutoff |
| Peak Responsivity (R) | 0.62 A/W @ 900 nm | 0.18 A/W @ 254 nm | 0.68 A/W @ 980 nm | VR = 5V |
| Dark Current (Id) | ≤ 0.5 nA / mm² | ≤ 0.2 nA / mm² | ≤ 1.2 nA / mm² | VR = 10V, 100% Wafer Probed |
| Junction Capacitance (Cj) | 12 pF / mm² | 25 pF / mm² | 3 pF / mm² | VR = 10V, f = 1 MHz |
| Rise Time (tr) | 5 ns | 12 ns | 0.8 ns | RL = 50 Ω, VR = 20V |
| Wafer Thickness | 380 μm ± 15 μm | 300 μm ± 10 μm | 200 μm ± 10 μm | Polished / Chemical Etched |
Local Market Applications
Serving Italian Industrial Districts: Application Engineering & System Integration
Italy represents Europe’s second-largest manufacturing powerhouse, defined by specialized regional clusters that require tailored optoelectronic components. Our bare silicon photodiode wafers, custom photocell chips, and associated sensors are deployed directly into key Italian technological ecosystems:
Emilia-Romagna: Packaging Valley
Centering on Bologna, Modena, and Parma, Italian automatic packaging machinery builders require high-speed optical registration arrays. Unpackaged photodiode chips are integrated into custom multi-channel transimpedance sensor bars to verify blister pack completeness, print alignment, and optical liquid level verification at speeds exceeding 1,200 packages/minute.
Lombardy & Piedmont: Robotics & EV
In the industrial belts of Milan, Brescia, and Turin, machine tool fabricators and electric drivetrain Tier-1 suppliers embed bare silicon photodiodes into high-precision absolute rotary encoders, laser welding seam-trackers, and EV battery arc fault optical detection systems that integrate seamlessly with our NTC battery temperature sensors.
Mirandola: Biomedical Metrology
Europe's foremost biomedical district in Mirandola utilizes our UV-sensitive bare silicon photodiode wafers for clinical in-vitro diagnostic (IVD) instruments, microfluidic optical absorption flow cells, and hemodialysis blood leakage optical monitors that require low noise and zero cross-talk.
Veneto & Tuscany: Photonics & CNC
Precision optics manufacturers in Florence and CNC tooling builders in Padua and Vicenza incorporate bare 10×10 mm silicon photocell chips for multi-axis laser beam profiling, optical micrometer gauges, and chromatic confocal displacement probes where minimal thermal drift is critical.
Macro-Economic & Technical Trends
Market Evolution: Italian Industrial Modernization & Semiconductor Demands
The procurement of photodetector elements in Italy is experiencing a profound technological transition, driven by institutional modernization plans, technological convergence, and strict European sustainability mandates.
1. Piano Transizione 5.0 (Industry 5.0)
The Italian government's Piano Transizione 5.0 incentivizes smart manufacturing systems that combine digitization with measured energy consumption reductions. Italian automation firms are moving toward edge-sensorized machines, requiring custom optoelectronic dies that can be mounted directly on PCB control surfaces alongside local processing microcontrollers to minimize power consumption.
2. Migration to Bare Die & SiP Packaging
To stay competitive against global equipment suppliers, Italian instrument makers are replacing discrete canned sensors (e.g., TO-5, TO-18) with System-in-Package (SiP) and Chip-on-Board (COB) topologies. Purchasing 100% probed bare silicon wafers allows Italian factories to achieve sub-millimeter profiles, minimize parasitic board capacitance, and eliminate expensive assembly labor.
3. Supply Chain Resiliency & Direct Sourcing
Following supply chain disruptions, Italian engineering procurement teams are bypassing regional broker markups, opting instead to establish direct relationships with verified semiconductor and PCB/sensor manufacturers. Direct factory engagement enables tailored dicing streets, custom wafer thicknesses, and complete technical visibility from ingot to finished die.
Manufacturing Excellence
Why Italian OEMs Partner with Shenzhen Mivo Electronics
Shenzhen Mivo Electronics Co., Ltd. combines specialized semiconductor wafer processing with comprehensive PCB fabrication and turnkey electronic assembly. While pure silicon foundries demand prohibitively large MOQs and PCBA contractors lack optoelectronic cleanroom expertise, we bridge the gap with agile, verified manufacturing solutions tailored to overseas buyers.
Onsite-Verified Plant
Our manufacturing facilities in Yuanshan Street, Shenzhen, have successfully passed rigorous third-party onsite verifications by international inspection agencies. With an established operation since 2016 and an 8-year verified track record on global platforms, our legal status and production capacities are fully certified.
Full Cleanroom Handling & Dicing
Wafers are handled in Class 1,000 / Class 10,000 cleanroom environments. We provide complete backend dicing services: un-diced full wafers, dice sawn on UV-release blue tape rings (Disco compatible), or individually sorted defect-free dice packed in antistatic Gel-Pak trays with wafer probing map files.
Turnkey COB & PCBA Integration
Beyond raw silicon, Mivo Electronics operates surface mount (SMT) and through-hole assembly lines. We can take your bare photodiode wafer and execute precision die-attach, micro-wire bonding, optical encapsulation, and peripheral signal conditioning on multilayer FR-4 or ceramic PCBs from prototype runs of 5 pieces.
Procurement Clarity
Frequently Asked Questions by Italian Procurement & Engineering Teams
Addressing key technical, compliance, logistical, and commercial inquiries commonly raised by Italian buyers.
How are bare silicon photodiode wafers packaged to avoid transit damage to Italy?
Bare wafers are packaged under cleanroom nitrogen environments. Depending on your assembly line needs, we supply wafers in sealed polypropylene horizontal wafer cassettes (coin boxes) with antistatic foam cushions, or precision-sawn dice secured on standard 6-inch/8-inch plastic film frames (dicing blue tape/UV release tape). For picked and tested dice, we utilize ESD-safe Gel-Pak vacuum release trays. Shipments are double-boxed with desiccant packs and shipped via air express (DHL/FedEx) directly to Italian customs airports (Milan Malpensa MXP, Rome Fiumicino FCO, or Bologna BLQ) with transit times of 3 to 5 business days.
What are the European compliance certifications (RoHS, REACH, CE) for your silicon products?
All our bare silicon photodiode wafers, photocell chips, and associated sensors are fully compliant with EU Directive 2011/65/EU (RoHS 2/3) and Regulation (EC) No 1907/2006 (REACH). Our metallization processes do not contain restricted lead, cadmium, or hazardous phthalates. Full third-party material declaration sheets (MDS) and chemical laboratory test reports from SGS or TÜV Rheinland can be provided with engineering samples to ensure seamless customs clearance in Italian ports.
Can you customize active area geometries, electrode patterns, and dicing street widths?
Yes. We regularly fabricate custom planar photodiode wafers according to customer photolithography masks. You can define active areas (ranging from 0.5×0.5 mm micro-elements up to 20×20 mm large-area linear photocells), quadrant segments, linear multi-element arrays, circular ring apertures, and customized guard ring structures. Dicing street widths can be optimized down to 40 μm to maximize die yield per wafer, and wafer thicknesses can be back-lapped from standard 380 μm down to 150 μm upon request.
What is the minimum order quantity (MOQ) for prototypes versus production?
For catalog items like our SGPIN400 (10×10 mm linear photocell wafer) or discrete unpackaged photocell chips, our prototype MOQ starts as low as 10 pieces or 1 full wafer. For bespoke photolithography runs requiring custom mask design, engineering prototypes start from 5 wafers. For turnkey PCBA, our prototype assembly service begins at just 5 pieces, allowing Italian R&D groups to thoroughly test prototypes before committing to mass production volume.
What electronic testing data is delivered with our wafer shipment?
Every production wafer undergoes 100% automated optical inspection (AOI) to eliminate structural micro-cracks, pinholes, and metallization lift-off. Additionally, wafers are electronically probed at wafer level (CP testing) for dark current (Id), reverse breakdown voltage (VBR), and shunt resistance (Rsh). We deliver complete electronic wafer sort (EWS) map files (G85 format or XML) indicating known-good-die (KGD) locations to streamline your automatic pick-and-place programming.
What payment terms and commercial frameworks are offered to Italian enterprises?
We accommodate standard international commercial terms, including FOB Shenzhen, CIF Italian ports, and DDP (Delivered Duty Paid) via express couriers. Standard payment methods include secure international wire transfer (T/T), Letter of Credit (L/C) for container orders, and verified online escrow options via our accredited trade platform. Established corporate accounts with recurring manufacturing schedules can apply for flexible credit terms subject to verification.
Accelerate Your Next Optoelectronic System Design
Whether you need catalog unpackaged silicon photodiode wafers, custom quadrant detector dies, or turnkey chip-on-board assembly for your Italian manufacturing plant, our senior optoelectronic engineers are ready to assist. Request comprehensive technical datasheets, wafer maps, and quotation packages today.
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