# SPS ## Description 230 VAC to Dual Isolated 5 V / 3.3 V DC Power Supply with Input Protection and EMI Filtering ## Project Details - **Owner:** jellyally - **Created:** 1/3/2026 - **Last Updated:** 1/14/2026 - **Visibility:** Public - **Ferrite Bead Placement Point:** after power modules before output terminals - **Ferrite Bead Target Rails:** +5V, +3.3V - **Domain:** Industrial/Manufacturing - **Reference Design URL:** https://www.hlktech.net/index.php?id=product&cate=114 - **Power Requirements:** Mains - **Operating Voltage:** 5V - **System Architecture:** flowchart TD subgraph Input_Protection L[AC Input L] --> Fuse[Fuse 1A T] N[AC Input N] --> ProtectCapX2[Suppression Capacitor X2] N --> Varistor[Varistor] PE[AC Input PE] --> Earth[Protective Earth] end subgraph AC_DC_Modules Fuse --> M5[HLK5M05] N --> M5 Fuse --> PM03[HLKPM03] N --> PM03 end subgraph DC_Outputs M5 --> Out5V[+5V] PM03 --> Out3V3[+3.3V] M5 --> Gnd[SELV GND] PM03 --> Gnd Out5V --> Term5V[+5V Terminal] Out3V3 --> Term3V3[+3.3V Terminal] Gnd --> TermGND[GND Terminal] end ## Key Components ### BMP1 — [BMP280 - 4262060](https://www.flux.ai/kicad-part-library/bmp280-4262060.md) - Role: Sensor - Package or Case Code: Bosch_LGA-8_2x2.5mm_P0.65mm_ClockwisePinNumbering - Manufacturer Part Number: BMP280 - Datasheet URL: https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMP280-DS001.pdf - Role Details: Pressure and temperature sensor - Package: LGA-8 **Pins:** - CSB [pin 2] - GND [pin 7] - GND [pin 1] - SCK [pin 4] - SDI [pin 3] - SDO [pin 5] - VDD [pin 8] - VDDIO [pin 6] ### F1 — [0875001.MRET1P](https://www.flux.ai/adrian95/0875001pmret1p.md) - Manufacturer Name: Littelfuse Inc. - Role Details: Series input fuse for AC L line, 1 A slow-blow - Current: 1A - Datasheet URL: https://www.mouser.com/datasheet/2/240/media-3323420.pdf - Part Type: Protection - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 0875001.MRET1P **Pins:** - P1 [pin 1] - P2 [pin 2] ### F2 — [0875001.MRET1P](https://www.flux.ai/adrian95/0875001pmret1p.md) - Manufacturer Name: Littelfuse Inc. - Role Details: Series input fuse for AC L line, 1 A slow-blow - Current: 1A - License: https://creativecommons.org/licenses/by/4.0/ - Role: Protection - Datasheet URL: https://www.mouser.com/datasheet/2/240/media-3323420.pdf - Part Type: Protection - Manufacturer Part Number: 0875001.MRET1P **Pins:** - P1 [pin 1] - P2 [pin 2] ### FB1 — [BLM31KN121SH1L](https://www.flux.ai/adrian95/blm31kn121sh1l.md) - Datasheet URL: https://www.murata.com/en-us/products/productdata/8801529495582/QNFA9148.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Ferrite bead EMI filter for +5V rail - Role: Choke (EMI Filter) - Part Type: Filter - Manufacturer Part Number: BLM31KN121SH1L - Manufacturer Name: Murata Electronics **Pins:** - 1 [pin 1] - 2 [pin 2] ### FB2 — [BLM31KN121SH1L](https://www.flux.ai/adrian95/blm31kn121sh1l.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.murata.com/en-us/products/productdata/8801529495582/QNFA9148.pdf - Role Details: Ferrite bead EMI filter for +3.3V rail - Role: Choke (EMI Filter) - Manufacturer Name: Murata Electronics - Manufacturer Part Number: BLM31KN121SH1L - Part Type: Filter **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Manufacturer Name: TE Connectivity AMP Connectors - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English - Part Type: Connector - Manufacturer Part Number: 282837-2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J10 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Manufacturer Name: TE Connectivity AMP Connectors - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English - Part Type: Connector - Manufacturer Part Number: 282837-2 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Role Details: DC output terminal block for +5 V and GND - Manufacturer Name: TE Connectivity AMP Connectors - Role: Interface - Part Type: Connector - Manufacturer Part Number: 282837-2 - Package: 5.08mm pitch through-hole - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Manufacturer Name: TE Connectivity AMP Connectors - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English - Manufacturer Part Number: 282837-2 - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 LED — [282837-3](https://www.flux.ai/adrian95/282837-3.md) - Part Type: Connector - Manufacturer Part Number: 282837-3 - Datasheet URL: https://www.te.com/usa-en/product-282837-3.datasheet.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: TE Connectivity AMP Connectors **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] ### J6 — [282837-4](https://www.flux.ai/adrian95/282837-4.md) - Datasheet URL: https://www.te.com/usa-en/product-282837-4.datasheet.pdf - Manufacturer Name: TE Connectivity AMP Connectors - Part Type: Connector - Manufacturer Part Number: 282837-4 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J7 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Manufacturer Name: TE Connectivity AMP Connectors - Part Type: Connector - Manufacturer Part Number: 282837-2 - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English **Pins:** - 1 [pin 1] - 2 [pin 2] ### J8 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Manufacturer Name: TE Connectivity AMP Connectors - Part Type: Connector - Manufacturer Part Number: 282837-2 - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English **Pins:** - 1 [pin 1] - 2 [pin 2] ### J9 — [282837-2](https://www.flux.ai/vasy_skral/282837-2.md) - Manufacturer Name: TE Connectivity AMP Connectors - Manufacturer Part Number: 282837-2 - Part Type: Connector - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=282837&DocType=Customer+Drawing&DocLang=English **Pins:** - 1 [pin 1] - 2 [pin 2] ### K1 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Manufacturer Part Number: MOC3063M - Part Type: Relay - Manufacturer Name: Semiconductor Components Industries **Pins:** - ~ [pin 4] - ~ [pin 2] - ~ [pin 1] - ~ [pin 6] - NC [pin 3] - NC [pin 5] ### K2 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Manufacturer Part Number: MOC3063M - Part Type: Relay - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Manufacturer Name: Semiconductor Components Industries **Pins:** - ~ [pin 4] - ~ [pin 2] - ~ [pin 1] - ~ [pin 6] - NC [pin 3] - NC [pin 5] ### K3 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Manufacturer Name: Semiconductor Components Industries - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Part Type: Relay - Manufacturer Part Number: MOC3063M **Pins:** - ~ [pin 4] - ~ [pin 2] - ~ [pin 1] - ~ [pin 6] - NC [pin 3] - NC [pin 5] ### K4 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Part Type: Relay - Manufacturer Part Number: MOC3063M - Manufacturer Name: Semiconductor Components Industries **Pins:** - ~ [pin 4] - ~ [pin 2] - ~ [pin 1] - ~ [pin 6] - NC [pin 3] - NC [pin 5] ### K5 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Manufacturer Part Number: MOC3063M - Part Type: Relay - Manufacturer Name: Semiconductor Components Industries **Pins:** - ~ [pin 4] - ~ [pin 2] - ~ [pin 1] - ~ [pin 6] - NC [pin 3] - NC [pin 5] ### K6 — [MOC3063M](https://www.flux.ai/vasyl/moc3063m.md) - Part Type: Relay - Manufacturer Part Number: MOC3063M - Datasheet URL: https://www.onsemi.com/pub/Collateral/MOC3043M-D.pdf - Manufacturer Name: Semiconductor Components Industries **Pins:** - ~ [pin 4] - ~ [pin 2] - ~ [pin 1] - ~ [pin 6] - NC [pin 5] - NC [pin 3] ### PS1 — [HLK-20M05](https://www.flux.ai/adrian95/hlk-20m05.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: HLK-20M05 - Part Type: Power Source - Datasheet URL: https://www.snapeda.com/parts/HLK-20M05/Hi-link/datasheet/ - Manufacturer Name: HI-LINK **Pins:** - -VO [pin 3] - +VO [pin 4] - AC(L) [pin 1] - AC(N) [pin 2] ### PSU2 — [HLK-PM03](https://www.flux.ai/lcsc/hlk-pm03.md) - JLCPCB Part Class: Extended Part - Part Type: Power Modules - Package or Case Code: PWRM-TH_HLK-PM03 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2310091637_HI-LINK-HLK-PM03_C209904.pdf - Role Details: Isolated 3.3V AC/DC module - Role: Power Conversion - Product Info Url: https://lcsc.com/product-detail/New-Arrivals_HI-LINK-HLK-PM03_C209904.html - Manufacturer Name: HI-LINK(海凌科) - Manufacturer Part Number: HLK-PM03 - LCSC Part Number: C209904 **Pins:** - -VO [pin 3] - +VO [pin 4] - AC [pin 2] - AC [pin 1] ### Q1 — [TIC206S-S](https://www.flux.ai/vasyl/tic206s-s.md) - Datasheet URL: https://www.bourns.com/data/global/pdfs/tic206_obsolete.pdf - Manufacturer Name: Bourns Inc. - Manufacturer Part Number: TIC206S-S - Part Type: Thyristors **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q2 — [TIC206S-S](https://www.flux.ai/vasyl/tic206s-s.md) - Datasheet URL: https://www.bourns.com/data/global/pdfs/tic206_obsolete.pdf - Manufacturer Name: Bourns Inc. - Part Type: Thyristors - Manufacturer Part Number: TIC206S-S **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q3 — [TIC206S-S](https://www.flux.ai/vasyl/tic206s-s.md) - Part Type: Thyristors - Manufacturer Part Number: TIC206S-S - Manufacturer Name: Bourns Inc. - Datasheet URL: https://www.bourns.com/data/global/pdfs/tic206_obsolete.pdf **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q4 — [TIC206S-S](https://www.flux.ai/vasyl/tic206s-s.md) - Manufacturer Name: Bourns Inc. - Datasheet URL: https://www.bourns.com/data/global/pdfs/tic206_obsolete.pdf - Manufacturer Part Number: TIC206S-S - Part Type: Thyristors **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q5 — [TIC206S-S](https://www.flux.ai/vasyl/tic206s-s.md) - Manufacturer Part Number: TIC206S-S - Part Type: Thyristors - Datasheet URL: https://www.bourns.com/data/global/pdfs/tic206_obsolete.pdf - Manufacturer Name: Bourns Inc. **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### Q6 — [TIC206S-S](https://www.flux.ai/vasyl/tic206s-s.md) - Part Type: Thyristors - Manufacturer Part Number: TIC206S-S - Manufacturer Name: Bourns Inc. - Datasheet URL: https://www.bourns.com/data/global/pdfs/tic206_obsolete.pdf **Pins:** - A1 [pin 1] - A2 [pin 2] - G [pin 3] ### RV1 — [MOV-14D271K](https://www.flux.ai/jecstronic/mov-14d271k.md) - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/MOV14D.pdf - Part Type: Varistor - Manufacturer Part Number: MOV-14D271K - Role Details: Surge suppression varistor between L and N, 275 VAC rated - Manufacturer Name: Bourns Inc. - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### RV2 — [MOV-14D271K](https://www.flux.ai/jecstronic/mov-14d271k.md) - Role Details: Surge suppression varistor between L and N, 275 VAC rated - Manufacturer Name: Bourns Inc. - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/MOV14D.pdf - Part Type: Varistor - Manufacturer Part Number: MOV-14D271K **Pins:** - 1 [pin 1] - 2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jellyally/sps](https://www.flux.ai/jellyally/sps).* --- *Generated from [https://www.flux.ai/jellyally/sps](https://www.flux.ai/jellyally/sps)*