Shengyi Technology (SYTECH) laminates
Shengyi PCB Laminates: FR-4, High-Tg, Automotive, High-Speed, RF & Flex
Shengyi Technology (SYTECH) is our first-choice laminate brand. We build on its full range: S1141 standard FR-4, S1000-2M high-Tg, halogen-free S1150G/S1170G, Autolad automotive grades, S7439 and Synamic low-loss materials, hydrocarbon and PTFE RF laminates, and SF flexible materials.
- Product families
- 9
- Df 0.015 → 0.0014
- S1141 → Synamic 9GN
- RF grades
- PTFE / hydrocarbon
- Flex
- FCCL + coverlay
Shengyi overview
Who is Shengyi Technology?
Shengyi Technology (SYTECH, 生益科技) is a Chinese copper-clad laminate maker and one of the largest in the world. Its catalogue covers nine product families, from conventional FR-4 and high-Tg epoxy to automotive, high-speed, RF/microwave, IC substrate, metal-base and flexible materials, made in plants in Guangdong, Suzhou, Changshu, Shaanxi, Jiangsu and Jiangxi.
Shengyi is our default laminate supplier for most rigid, multilayer and HDI boards. Because one supplier covers so many families, a single build can combine, for example, Synamic signal layers with S1000-2M power layers under one material system. If your drawing names a Shengyi grade we build on it; if it names another brand and allows an equivalent, a Shengyi grade is usually the first one we propose, and only with your written approval.
Product line
Shengyi laminate product line by family.
| Family | Main grades | Positioning | On our site |
|---|---|---|---|
| Conventional FR-4 | S1141, S1141 150, S1130, S1600 / S1600L (CTI 600) | Standard and mid-Tg FR-4, UV-blocking, high-CTI | FR-4 guide |
| Lead-free / high-Tg FR-4 | S1000, S1000H, S1000-2, S1000-2M, S1190 | Low-CTE mid- and high-Tg for lead-free multilayer | S1000-2M page |
| Halogen-free | S1150G, S1170G, S1190G, S1151G | Halogen-free mid- and high-Tg, FR-4.1 / FR-15.1 | This page |
| Automotive | Autolad1, Autolad1G, Autolad2G, Autolad2GH, Autolad3, Autolad3G, Autolad6G | Lead-free, high-CTI, low-CTE and low-loss grades for vehicles | Automotive PCB |
| High speed (HSD) | S7040G, S7045G, S7439, S7439G, Synamic 6 / 6N / 6GX, Synamic 8G / 8GN, Synamic 9GN | Mid-loss to extremely low-loss digital | High speed PCB |
| RF & microwave | S7136H, LNB33 / LNB33C, SG7350D, mmWave G, mmWave77, SCGA-500 GF220–GF300 | Hydrocarbon, PPO and woven-glass PTFE | RF materials |
| Flexible | SF202, SF305, SF230, SLF, DLF, SF224; coverlays SF202C, SF305C | Adhesiveless and adhesive FCCL, coverlay, bonding film | Polyimide |
| Special | SH260 polyimide, SP175M / SP225GN no-flow PP, S6015 RCC | Rigid polyimide, low-flow prepreg, resin-coated copper | Rigid-flex PCB |
| IC substrate & metal base | SI10US; SAR / SCR aluminium- and copper-base CCL | Listed for completeness; we do not build IC substrates or aluminium PCBs | — |
FR-4 & high-Tg
Shengyi S1141, S1000-2M and other FR-4 / high-Tg laminates.
Shengyi S1141 is the standard-Tg FR-4 workhorse (Tg about 140 °C) for consumer and general electronics, and S1141 150 is its 150 °C mid-Tg version. For lead-free assembly the low-CTE grades take over: S1000 and S1000H (Tg 155 °C, z-expansion 3.4% and 2.8%), S1000-2 and S1000-2M (Tg 180 °C, 2.8% and 2.4%) and S1190 (Tg 200 °C) for high layer counts. S1000-2M is the high-Tg FR-4 we use most and is often accepted where a drawing calls out a 170–180 °C Tg, CAF-resistant FR-4.
| Grade | Tg (°C) | Td (°C) | Z-axis expansion | Typical use |
|---|---|---|---|---|
| S1141 | 140 | 310 | 4.5% | Standard FR-4, consumer |
| S1141 150 | 150 | 310 | 4.2% | Mid-Tg FR-4 |
| S1000H | 155 | 348 | 2.8% | Lead-free, mid-Tg, low CTE |
| S1000-2 | 180 | 345 | 2.8% | High-Tg, low CTE |
| S1000-2M | 180 | 355 | 2.4% | High-Tg, high heat resistance, our default |
| S1190 | 200 | 350 | 2.3% | High layer count, high reliability |
| S1600L | 150 | 355 | 3.2% | CTI 600 for high-voltage spacing |
Halogen-free & CTI
Halogen-free Shengyi S1150G, S1170G and S1190G.
For products that must be halogen-free (IEC 61249-2-21), Shengyi offers S1150G (halogen-free mid-Tg, Tg 155 °C), S1170G (halogen-free high-Tg, FR-15.1, Tg 180 °C) and S1190G (halogen-free high-Tg, low CTE, Tg 190 °C, Td 408 °C). S1151G is a halogen-free, high-CTI grade used in automotive power and charging. Halogen-free grades are stiffer and drill differently from standard FR-4, so we adjust drill parameters and desmear when you specify them.
| Grade | Class | Tg (°C) | Td (°C) | Z-axis expansion |
|---|---|---|---|---|
| S1150G | Halogen-free, mid-Tg | 155 | 355 | 2.8% |
| S1170G | Halogen-free, high-Tg, FR-15.1 | 180 | 390 | 2.3% |
| S1190G | Halogen-free, high-Tg, low CTE | 190 | 408 | 1.8% |
| S1151G | Halogen-free, high CTI (automotive) | 155 | 380 | 2.8% |
Automotive
Shengyi Autolad automotive laminates.
The Autolad series is Shengyi’s automotive range, qualified for long thermal-cycling life and high-voltage spacing. Autolad1 and Autolad3 are lead-free compatible mid- and high-Tg FR-4; Autolad1G is a halogen-free mid-loss high-Tg HDI material; Autolad2G and Autolad2GH are high-CTI halogen-free grades for power and battery electronics; Autolad3G has ultra-low CTE (Tg 190 °C, 1.8% z-expansion); and Autolad6G is a low-Dk, low-loss halogen-free grade (Dk 3.5, Df 0.005) for radar and ADAS modules.
| Grade | Positioning | Tg (°C) | Z-axis expansion |
|---|---|---|---|
| Autolad1 | Lead-free, mid-Tg | 156 | 2.8% |
| Autolad3 | Lead-free, high-Tg | 180 | 2.2% |
| Autolad1G | Halogen-free, mid-loss HDI | 173 | 2.3% |
| Autolad2G / 2GH | Halogen-free, high CTI | 175 | 2.2% / 2.1% |
| Autolad3G | Halogen-free, ultra-low CTE | 190 | 1.8% |
| Autolad6G | Halogen-free, low Dk / low loss | 220 (TMA) | 1.2% |
See automotive PCB and BMS PCB for how we apply these grades.
High speed
Shengyi high-speed laminates: S7439 and the Synamic series.
Shengyi’s high-speed digital (HSD) materials run from mid-loss S7040G and S7045G (Df about 0.009–0.010 at 10 GHz) through low-loss S7439 (Df 0.006) to the Synamic family. Synamic 6 (Df 0.0036 at 10 GHz) is a common alternative to Panasonic Megtron 6 for 25–56G channels, Synamic 6N lowers Dk to 3.35, and Synamic 8G / 8GN and 9GN target 112G-class links with Df down to 0.0014.
| Grade | Loss class | Dk @ 10 GHz | Df @ 10 GHz | Typical data rate |
|---|---|---|---|---|
| S7040G | Mid loss, halogen-free | 3.72 | 0.0089 | 10G, PCIe Gen 3 |
| S7045G | Mid loss, halogen-free | 4.30 | 0.010 | 10G |
| S7439 | Low loss | 3.66 | 0.0060 | PCIe Gen 4, 25G |
| S7439G | Low loss, halogen-free | 3.74 | 0.0060 | PCIe Gen 4, 25G |
| Synamic 6 | Very low loss | 3.68 | 0.0036 | 25–56G |
| Synamic 6N | Very low loss, low Dk | 3.35 | 0.0021 | 56G PAM4 |
| Synamic 6GX | Very low loss, halogen-free | 3.73 | 0.0050 | 25–56G |
| Synamic 8G / 8GN | Ultra low loss, halogen-free | 3.66 / 3.28 | 0.0032 / 0.0019 | 56–112G |
| Synamic 9GN | Extremely low loss, halogen-free | 3.34 | 0.0014 | 112G and above |
RF & microwave
Shengyi RF and microwave laminates.
For RF, Shengyi offers ceramic-filled hydrocarbon laminates that process like FR-4, S7136H (Dk 3.42, Df 0.0030) and the LNB33 / LNB33C family (Dk 3.30–3.45), which are often used where RO4350B-class performance is needed at lower cost. mmWave G (PPO, Dk 3.15) and mmWave77 (PTFE, Dk 3.0, Df 0.0010) target 77 GHz radar, and SCGA-500 GF220–GF300 are woven-glass PTFE laminates (Dk 2.20–3.00) for antennas. SG7350D adds high thermal conductivity for power amplifiers.
| Grade | Type | Dk @ 10 GHz | Df @ 10 GHz |
|---|---|---|---|
| S7136H | Hydrocarbon | 3.42 | 0.0030 |
| LNB33 | Hydrocarbon | 3.30 | 0.0025 |
| LNB33C (340 / 345) | Hydrocarbon | 3.40 / 3.45 | 0.0033 / 0.0035 |
| SG7350D | High thermal conductivity RF | 3.55 | 0.0022 |
| mmWave G | PPO, mmWave radar | 3.15 | 0.002 |
| mmWave77 | PTFE, 77 GHz radar | 3.0 | 0.0010 |
| SCGA-500 GF220 / GF255 / GF265 / GF300 | Woven-glass PTFE | 2.20 / 2.55 / 2.65 / 3.00 | 0.0009 / 0.0014 / 0.0017 / 0.0023 |
Compare these with Rogers, Taconic and Arlon on RF PCB materials and PTFE PCB.
Flex & special
Shengyi flexible and special materials.
Shengyi’s flexible range includes adhesiveless double-sided FCCL (SF202, DL), adhesive-based halogen-free FCCL (SF305), low-Df adhesiveless laminates for 5G antennas (SF230, SLF, DLF) and a fluoropolymer composite FCCL (SF224, Dk 2.49), plus coverlays (SF202C, SF305C, SF315C black), bonding films (SF315B, SF206B low Dk) and FR-4 / polyimide stiffeners. In rigid-flex, SP175M and SP225GN no-flow prepregs control resin squeeze-out at the rigid-to-flex transition, and SH260 is a halogen-free rigid polyimide (Tg above 250 °C) for high-temperature boards.
| Grade | Type | Dk / Df (as listed) |
|---|---|---|
| SF202 | Adhesiveless double-sided FCCL | 3.2 / 0.009 |
| SF305 | Halogen-free adhesive FCCL | 3.6 / 0.028 |
| SF230 | Low-Df adhesiveless FCCL (5G) | 3.3 / 0.0031 |
| SLF / DLF | Low-Df adhesiveless single-sided / modified PI | 3.2 / 0.0032; 3.4 / 0.0033 |
| SF224 | Fluoropolymer composite FCCL | 2.49 / 0.0023 |
| SF305C / SF202C | Coverlay | 3.3 / 0.017; 3.43 / 0.0135 |
| SP175M / SP225GN | Low-flow / no-flow prepreg | Tg 170 / 225 °C |
| SH260 | Rigid polyimide | Tg > 250 °C (TMA) |
For flex construction choices, see polyimide PCB material, DuPont Pyralux and flex PCB.
Choosing a grade
Which Shengyi laminate should I specify?
| If your board… | Start with | Step up to |
|---|---|---|
| Is a simple 2–6 layer board with one reflow | S1141 | S1000H |
| Sees lead-free assembly, 8+ layers or HDI | S1000-2M | S1190 |
| Must be halogen-free | S1150G | S1170G / S1190G |
| Is an automotive ECU, BMS or charger | Autolad1 / Autolad3 | Autolad2G (high CTI), Autolad3G (low CTE) |
| Carries 10–25G or PCIe Gen 4 | S7439 | Synamic 6 |
| Carries 56–112G PAM4 | Synamic 6N | Synamic 8GN / 9GN |
| Is an RF board below about 20 GHz | S7136H / LNB33 | SCGA-500 PTFE |
| Is a 77 GHz radar antenna | mmWave77 | Hybrid with S1000-2M |
RFQ
What to include in a Shengyi laminate RFQ.
- Laminate name and grade exactly as on your drawing, or “or equivalent” if substitution is allowed
- Shengyi grade (e.g. “Shengyi S1000-2M”) or the IPC-4101 slash sheet you need
- Halogen-free, CTI or automotive requirements
- Data rate or frequency for low-loss and RF layers
- Layer count, finished thickness and tolerance
- Impedance targets and reference layers
- IPC class, quantity and schedule
FAQ
Material questions.
Is Shengyi a good PCB laminate?
Yes. Shengyi Technology is one of the world’s largest copper-clad laminate makers, and its grades are UL-recognised and widely used in automotive, telecom and server boards. It is our default laminate brand.
What is Shengyi S1141?
S1141 is Shengyi’s standard FR-4 (Tg about 140 °C, Td about 310 °C) for consumer and general electronics. S1141 150 is the 150 °C mid-Tg version.
What is Shengyi S1150G?
S1150G is a halogen-free mid-Tg FR-4 (Tg about 155 °C, Td about 355 °C). For high-Tg halogen-free boards use S1170G or S1190G.
Is S1000-2M equivalent to Isola 370HR?
Both are 180 °C Tg, CAF-resistant, lead-free FR-4 laminates and S1000-2M is often accepted as an equivalent. We substitute only with your written approval. See the S1000-2M page.
Which Shengyi material compares with Megtron 6?
Synamic 6 (Dk 3.68, Df 0.0036 at 10 GHz) is the usual comparison. Synamic 6N and 8GN are lower-loss options for 56–112G.
Does Shengyi make RF laminates?
Yes: S7136H and LNB33 hydrocarbon laminates, mmWave G and mmWave77 for radar, and SCGA-500 woven-glass PTFE from Dk 2.20 to 3.00.
Can I mix Shengyi grades in one stack-up?
Yes. A common hybrid uses Synamic or S7439 on signal layers and S1000-2M on power and ground layers. We check Tg, CTE and resin compatibility first.
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