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10-Layer Portable SSD PCB
Authoritative 10-layer portable SSD PCB manufacturing on FR4 Tg 170 substrate with 1.2 mm total thickness, resin-plugged vias, 3/3 mil trace/space, and ENIG 1–2 µ” finish for SMI2320-based portable SSDs, external SSD PCB designs, and high-speed USB 3.2/Thunderbolt storage devices.
Portable SSDs have redefined external storage, pushing 1 GB/s to 2 GB/s transfer speeds through USB 3.2 Gen 2×2, USB4, and Thunderbolt interfaces while shrinking into pocket-sized enclosures. A 10-layer PCB is the minimum stack count that gives the SMI, JMicron, Maxio, and Phison controllers, the DDR/DDR3 cache, and the NAND flash packages the power integrity, signal integrity, and reference plane coverage they need. At Season Multilayer Circuit, we manufacture 10-layer portable SSD PCBs with resin-plugged vias, controlled-impedance routing, and IPC-6012 Class 2/3 quality systems for storage brands worldwide.
10
Layer Count
3/3 mil
Min. Trace/Space
0.20 mm
Min. Through Via
1.2 mm
Board Thickness
1-2 u”
ENIG Gold Thickness
ISO 9001:2015
ISO 14001
UL (E305905)
IPC Class 2 / Class 3
RoHS
REACH
10-Layer Portable SSD PCB Stackup Diagram
Our 10-layer portable SSD PCB uses a high-Tg FR4 Tg 170 build-up with four 0.075 mm inner cores and five prepreg layers, laminated to a 1.2 ± 0.12 mm finished thickness (1,169 µm nominal). Outer copper is 40 µm (1 oz foil + plating) for high-current Type-C and power-handling planes, while inner copper is 30 µm for controlled-impedance signal routing at 3/3 mil line and space. Through vias are 0.20 mm mechanical drill (a 6:1 aspect ratio in the 1.2 mm stack), and resin plugging + plated capping provide a flat, BGA-friendly surface that survives repeated reflow and high-density SMT assembly.
| Layer | Material | Thickness (µm) | Function / Routing Notes |
|---|---|---|---|
| Solder mask (top) | Solder mask ink | 20 | Solder-mask definition over L1 pads and Type-C fingers |
| L1 (Top) | Copper foil + plating | 40 | Top signal + power: SMI/JMicron/Maxio/Phison controller, the Type-C interface, and power-management stages |
| Prepreg | 1080 | 76 | Bonds L1 to the L2/L3 core |
| L2 (Inner) | Copper foil | 30 | Ground plane: solid reference for USB 3.2 / PCIe Gen 3 controlled-impedance routing and short return paths |
| Core | FR-4 Tg 170, no copper | 75 | Laminates the L2/L3 pair |
| L3 (Inner) | Copper foil | 30 | Inner signal: high-speed routing for NAND flash channels and the DRAM data bus (DDR3-1600 / DDR3-1866 / LPDDR4) |
| Prepreg | 1080 × 2 | 119 | Bonds L3 to the L4/L5 core |
| L4 (Inner) | Copper foil | 30 | Power plane: clean 3.3 V / 1.8 V / 1.2 V / 0.8 V distribution from the buck converters to controller and NAND |
| Core | FR-4 Tg 170, no copper | 75 | Laminates the L4/L5 pair |
| L5 (Inner) | Copper foil | 30 | Inner signal: additional routing for SPI flash, LED indicators, and thermal sensor nets |
| Prepreg | 2116 | 119 | Bonds L5 to the L6/L7 core |
| L6 (Inner) | Copper foil | 30 | Ground plane: mid-stack shielding for thermal dissipation and signal return continuity |
| Core | FR-4 Tg 170, no copper | 75 | Laminates the L6/L7 pair |
| L7 (Inner) | Copper foil | 30 | Side-band routing for SATA / PCIe reference clocks and housekeeping GPIO — the same SATA reference-clock rules we apply on our 4-layer SATA SSD PCB |
| Prepreg | 1080 × 2 | 119 | Bonds L7 to the L8/L9 core |
| L8 (Inner) | Copper foil | 30 | Power plane: secondary distribution for the bridge controller and ESD/TVS protection circuits |
| Core | FR-4 Tg 170, no copper | 75 | Laminates the L8/L9 pair |
| L9 (Inner) | Copper foil | 30 | Ground plane: bottom reference plane closing the controlled-impedance loop on Layer 10 signals |
| Prepreg | 1080 | 76 | Bonds L9 to L10 |
| L10 (Bottom) | Copper foil + plating | 40 | Bottom signal: bottom-side SMT components, NAND flash packages, and the resin-plugged via far side |
| Solder mask (bottom) | Solder mask ink | 20 | Legend and pad definition on the bottom side |
This stackup is a typical reference for 10-layer portable SSD PCB main boards built on FR4 Tg 170 — 1,169 µm total across dielectrics, copper foil, and solder mask, finished at 1.2 ± 0.12 mm. Our engineering team can adjust prepreg selection, copper weight, and plane allocation to optimize for SSD program requirements: longer battery-rail hold-up, tighter DDR signal integrity, or lower EMI on USB 3.2 Gen 2×2 / USB4 channels. Impedance targets on this build are 50 Ω single-ended at ±5% and 90 Ω / 100 Ω differential at ±9–10%, referenced to the L2, L4, and L9 planes. Backdrill, via-in-pad, and edge plating are also available for denser SSD layouts.
Impedance Targets on This 10-Layer Build
The impedance report for this 10-layer portable SSD PCB build models 50 Ω single-ended pairs on L1/L10 (referenced to L2/L9) and on the L3/L8 and L4/L7 inner layers, 90 Ω differential pairs on L1, L3/L8, and L4/L7, and 100 Ω differential pairs on L1/L10 and L3 — held to ±5% on single-ended and ±9–10% on differential routing. Line widths and spaces are tuned layer by layer to hit each target, and every production lot is verified with a TDR coupon before shipment.
Technical Capability & Specifications
| Parameter | Specification | Advanced Capabilities |
|---|---|---|
| Layer Count | 10-Layer | 2-32L(Mass); 2-64L(Sample) |
| Base Material | FR4 Tg 170 | SY, NY, TUC, ZY, EMC, KB, ITEQ, Rogers, Megtron, Nelco, Isola |
| Board Thickness | 1.2 mm | 0.2-6.4mm(Mass); 0.15-20mm(Sample) |
| Panel Size | 148×122 mm / 10up | 800×600mm(Mass); 1050×610mm(Sample) |
| Copper Thickness | Outer: 40 μm (1 oz foil + plating) Inner: 30 μm | Outer: 1/3–12 oz Inner: 1/4–12 oz |
| Min. Through Via | 0.20 mm | 0.15mm(Mass); 0.127mm(Sample) |
| Trace/Space | 3/3 mil | 2.5/2.5mil(Mass); 1.5/1.5mil(Sample) |
| Special Process | Resin Plugged Vias (resin fill + plated cap) | Back drill, via-in-pad, edge plating |
| Surface Finish | ENIG 1–2 µ” | ENIG, OSP, HASL, Immersion Tin/Silver |
| Solder Mask | Customer-specified color | LPI, Taiyo / Peters / Guangxin inks |
| Silkscreen | Customer-specified | Epoxy ink, custom legend |
| Impedance Control | 50 Ω SE ±5% 90 Ω / 100 Ω Diff ±9–10% | ±8% (down to ±5%) on request; TDR coupon with every lot |
| Quality Standard | IPC Class 2 (default) / Class 3 (on request) | UL, RoHS, REACH, ISO 9001:2015 / ISO 14001 |
Key Advantages of Our 10-Layer Portable SSD PCB
- Resin-Plugged Vias for Flat BGA Pads: Every through via is filled with epoxy resin and capped with plating, eliminating the air pocket under BGA balls, improving pad coplanarity and assembly yield on fine-pitch NAND packages.
- FR4 Tg 170 High-Tg Laminate: The 170 °C glass transition temperature provides extra thermal headroom during lead-free reflow and hot operating conditions, reducing the risk of pad lifting and barrel cracking.
- Controlled-Impedance Signal Integrity: Multiple solid reference planes and 3/3 mil routing support 50-ohm single-ended USB 3.2 and 90/100-ohm differential PCIe and DDR pairs, held within ±5% (SE) and ±9–10% (differential) on this build.
- 1 oz Outer Copper for High-Current Rails: Outer copper of 40 µm carries the 5V/3A Type-C bus, buck-converter phases, and ground returns without trace heating or voltage drop.
- ENIG 1–2 µ” Surface Finish: Flat, lead-free electroless nickel immersion gold (ENIG) pads deliver reliable wire bonding, fine-pitch BGA soldering, and long shelf life for global distribution.
- ISO 9001:2015 / IPC Class 2-3 Manufacturing: Every portable SSD board passes layer-by-layer AOI, 100% electrical test, and resin-plug via cross-section verification under a certified quality system.
Overcoming Critical Challenges in 10-Layer Portable SSD PCB Design
1. Power Integrity for High-Current Type-C Power Delivery
USB-C power delivery can deliver up to 100 W (20 V / 5 A) to a portable SSD, and buck-converter phases switching at 1-2 MHz must coexist with sensitive data paths. The 10-layer FR4 Tg 170 build uses 1 oz outer copper and dedicated power/ground planes (L4, L6, L8) to keep PD ripple under 50 mV peak-to-peak and ground bounce below acceptable limits for USB 3.2 Gen 2×2 signaling.
2. Signal Integrity for DDR, NAND, and USB 3.2 Channels
Modern portable SSDs run DDR3-1866 / LPDDR4 cache, multi-channel NAND flash (ONFI / Toggle), and a 10 Gbps USB 3.2 Gen 2×2 or PCIe Gen 3 x4 interface simultaneously. Our 10-layer routing rules with 3/3 mil trace/space, length-matched DDR pairs, and continuous reference planes deliver ±5% impedance on critical nets and eye-pattern margins that pass USB-IF compliance.
3. Thermal Management and Mechanical Reliability in a Sealed Enclosure
Portable SSDs are sealed aluminum enclosures that trap heat from the controller and NAND during sustained writes. We combat this with 1 oz outer copper for lateral heat spreading, resin-plugged vias for solid thermal vias, and FR4 Tg 170 to survive 105 °C operating temperatures. The 1.2 mm total thickness is mechanically robust enough to survive 1.5 m drop tests on hard surfaces without cracking.
10-Layer Portable SSD PCB Design Rules and DFM Checklist
A 10-layer portable SSD lives or dies on four things: reference-plane continuity, DDR length matching, via plugging quality, and panel design. This is the checklist our engineering team applies to every portable SSD PCB before it is released to production.
- Keep a solid reference plane adjacent to every high-speed layer — in this stackup that means the L2, L6, and L9 ground planes plus the L4 and L8 power planes, which keeps return paths short and high-speed edges clean.
- Route the DDR3-1600 / DDR3-1866 / LPDDR4 cache bus as length-matched pairs, with continuous reference under the controller, DRAM, and NAND footprints rather than sliced pours.
- Hold 3/3 mil line and space on the inner signal layers, and keep impedance within ±5% on 50-ohm single-ended USB 3.2 channels and ±9–10% on 90/100-ohm differential PCIe pairs and DDR buses.
- Use 1 oz (40 µm) outer copper for the 5V/3A Type-C bus and the buck-converter phases, so PD ripple stays under 50 mV peak-to-peak and ground bounce stays out of the USB 3.2 Gen 2×2 eye.
- Resin-plug and plate-cap every 0.20 mm mechanical through via — that is what keeps pad coplanarity and assembly yield intact on fine-pitch NAND packages across repeated reflow cycles.
- Freeze the panel early: 148 × 122 mm with 10-up boards is our default, and we add fiducials, tooling holes, and breakaway rails to match your SMT line.
Send your Gerber or ODB++ data and we return free DFM file checking, a marked-up stackup drawing, and a signal-integrity review before production.
Where Our 10-Layer Portable SSD PCBs Are Used
- Portable SSD Main Boards (SMI2320 / SM2320): USB 3.2 Gen 2×2 external SSDs delivering 2 GB/s sequential read with embedded DRAM for low-latency random I/O. See our 10-layer USSD PCB for the USB flash-drive variant.
- USB4 / Thunderbolt Portable SSDs: High-performance 40 Gbps external storage for content creators and engineers working with 4K/8K video or large datasets.
- NVMe Enclosure Boards: M.2 NVMe-to-USB bridge PCBs using JMicron JMS583, Realtek RTL9210, or VIA VL822 controllers, paired with 10-layer carrier or active cables. For denser M.2 carriers, see our 10-layer M.2 SSD PCB.
- Industrial Storage Modules: Rugged portable SSDs for field data collection, automotive diagnostics, and outdoor surveillance recording.
- Mobile Workstation Backup Drives: High-capacity shuttle drives for photographers, videographers, and DIT workflows needing terabytes of fast scratch storage on location.
Our Quality Guarantee for Portable SSD PCBs
Every 10-layer portable SSD PCB ships with a comprehensive quality verification record. Our ISO 9001:2015 certified facility in Shenzhen operates under a documented quality management system with full lot traceability from raw laminate to finished board.
- 100% automated optical inspection (AOI) on every layer, plus post-lamination AOI for inner layers
- 100% flying-probe or fixture-based electrical test (E-test) for opens and shorts against your CAD netlist
- Resin-plugged via cross-section analysis on first-article and SPC samples
- Controlled-impedance coupon test report per lot with TDR (Time Domain Reflectometry) traces
- RoHS/REACH compliance documentation included with every shipment
Every quality record is tied to the board’s lot number and traces back to the raw laminate batch, so incoming inspection has a documented history for each shipment rather than a single pass/fail stamp.
Why Choose Season PCB for Your 10-Layer Portable SSD PCB?
With nearly 20 years of experience in multilayer PCB manufacturing, Season Multilayer Circuit has served over 8,000 global clients in consumer storage, data center, and industrial electronics. Our three manufacturing facilities provide capacity for both rapid portable SSD prototyping and high-volume production of USB 3.2 / USB4 storage boards.
We understand that an SSD circuit board must deliver years of reliable, high-throughput performance. That is why every 10-layer portable SSD PCB we ship is backed by:
- Free DFM file checking, a marked-up stackup drawing, and signal-integrity review before production
- 24/7 dedicated engineering support across time zones
- Guaranteed on-time delivery with door-to-door logistics
- No minimum order quantity — small-batch and low-volume runs from 5 prototypes to 100,000+ units
- Engineering fee waivers on bulk production orders
As an SSD PCB manufacturer, Season PCB specializes in 10-layer portable SSD PCB manufacturing for SMI, JMicron, Maxio, and Phison controller-based external storage. Our multilayer PCB products feature resin-plugged vias, controlled-impedance routing, 1 oz outer copper, and a 1.2 mm profile engineered to fit the slim aluminum enclosures of today’s pocket-sized SSDs.
For your portable SSD PCB needs, Season PCB provides fast turnaround, competitive pricing, and ISO-certified quality. 998PCB Group, established in 2006, supports the same storage program from multilayer prototype to mass production across both English and Chinese channels.
Our portable SSD boards are built to multilayer PCB manufacturing standards and can be paired with one-stop PCBA assembly service covering NAND SMT, DRAM placement, USB-C connector assembly, and full enclosure integration. Each board undergoes thermal cycling, impedance TDR testing, and full electrical verification before shipment.
Frequently Asked Questions
What is the typical lead time for a 10-layer portable SSD PCB?
Standard lead time for 10-layer portable SSD samples is 8-10 working days after file approval because the resin-plugged via process adds one plating and curing cycle. Mass production typically takes 18-22 working days depending on panel design, surface finish, and impedance coupon requirements. Expedited 5-day service is available for urgent validation builds.
Can you support USB 3.2 Gen 2×2 and PCIe Gen 3 controlled impedance on this board?
Yes. The 10-layer stackup with multiple solid reference planes and 3/3 mil trace/space is designed for high-speed serial interfaces. We routinely support 50-ohm single-ended USB 3.2 channels and 90/100-ohm differential PCIe pairs at ±5% (SE) / ±9–10% (differential) impedance tolerance, with TDR coupon test data supplied with every lot.
Do you support panelization and resin plug + cap for BGA-grade assembly?
Yes. The default 10-layer build ships as a 148×122 mm panel with 10-up boards, and we customize panel layout to your SMT line including fiducials, tooling holes, and breakaway rails. Resin plug + plated cap is standard on this product and we run cross-section inspection on the first article of every build to confirm zero voids under BGA pads.
What surface finishes, solder mask colors, and silkscreen options are available?
ENIG is the default surface finish; OSP, HASL, and immersion tin or silver are also available. Solder mask and silkscreen colors are customer-specified, using Taiyo, Peters, or Guangxin inks for the mask and epoxy ink for the legend.
Which controller platforms and storage interfaces does this 10-layer stackup support?
The stackup targets SMI / SM2320, JMicron, Maxio, and Phison controllers and bridge platforms, with DDR3-1600, DDR3-1866, and LPDDR4 cache buses, multi-channel ONFI and Toggle-mode NAND, and a 10 Gbps USB 3.2 Gen 2×2 or PCIe Gen 3 x4 host interface.
How do you verify resin plugging and via reliability before shipment?
Every layer runs 100% automated optical inspection with post-lamination AOI for inner layers, followed by 100% flying-probe or fixture-based electrical test for opens and shorts. First-article and SPC samples also go through resin-plugged via cross-section analysis to confirm the fill and zero voids under BGA pads.
Ready to start your 10-layer portable SSD PCB project?
Whether you need 5 pieces for early validation or 100,000 for peak retail season, our engineering team is ready to support your portable SSD program with free DFM review on your Gerber or ODB++ data, controlled-impedance stackup design, and ISO 9001:2015 certified manufacturing.
Tel: (+86) 18681528532 (WhatsApp)
Email: roc@season-pcb.com