# DER-920 LED Driver Reference ## Description Unconnected DER-920 65 W offline LED ballast component schematic grouped by input/EMI, PFC boost, isolated flyback, secondary control/dimming, and connectors. Components are intentionally not wired yet. ## Project Details - **Owner:** nani1214 - **Created:** 5/17/2026 - **Last Updated:** 5/29/2026 - **Visibility:** Public ## Key Components ### BR1 — [KBU4M-E4/51](https://www.flux.ai/adrian95/kbu4m-e451~0si.md) - Role: Bridge Rectifier - Manufacturer Part Number: KBU4M-E4/51 - Datasheet URL: https://www.vishay.com/docs/88656/kbu4.pdf - Role Details: 1000V 4A class bridge placeholder for UD4KB100-BP - Manufacturer Name: Vishay General Semiconductor - Diodes Division - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode **Pins:** - - [pin 4] - + [pin 1] - P2 [pin 2] - P3 [pin 3] ### D11 — [DFLU1400-7](https://www.flux.ai/lcsc/dflu1400-7~jdi5.md) - Package or Case Code: POWERDI-123_L2.8-W1.8-LS3.7-RD - LCSC Part Number: C155379 - Part Type: Diodes - Fast Recovery Rectifiers - Role Details: Close POWERDI-123 placeholder for DFLU1200-7 - Role: Rectifier - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1806091620_Diodes-Incorporated-DFLU1400-7_C155379.pdf - Product Info Url: https://lcsc.com/product-detail/Diodes-Rectifiers-Hyperfast_DIODES_DFLU1400-7_DFLU1400-7_C155379.html - JLCPCB Part Class: Extended Part - Manufacturer Name: DIODES(美台) - Manufacturer Part Number: DFLU1400-7 **Pins:** - A [pin 2] - C [pin 1] ### D12 — [STTH3R04S](https://www.flux.ai/lcsc/stth3r04s~zn6x.md) - LCSC Part Number: C123323 - Manufacturer Name: ST(意法半导体) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-STTH3R04S_C123323.pdf - Manufacturer Part Number: STTH3R04S - Product Info Url: https://lcsc.com/product-detail/Diodes-Rectifiers-Hyperfast_STMicroelectronics_STTH3R04S_STMicroelectronics-STTH3R04S_C123323.html - Part Type: Diodes - Fast Recovery Rectifiers - JLCPCB Part Class: Extended Part - Package or Case Code: SMC_L6.9-W5.9-LS7.9-RD - Role: Output Rectifier - Role Details: Secondary output rectifier **Pins:** - A [pin 2] - C [pin 1] ### D13 — [Generic Silicon Diode](https://www.flux.ai/jharwinbarrozo/generic-silicon-diode~h9.md) - Role Details: Placeholder for BAS21HT1G FB current injection diode - Part Type: Diode - Package: SMD_0603_1608Metric - Role: Signal Steering **Pins:** - A [pin 2] - K [pin 1] ### D2 — [1N4006](https://www.flux.ai/lcsc/1n4006~0v2q.md) - Manufacturer Name: GW(唯圣) - Manufacturer Part Number: 1N4006 - Part Type: Diodes - General Purpose - LCSC Part Number: C331632 - Role Details: 1N4006 800V 1A diode from DER-920 BOM - Product Info Url: https://lcsc.com/product-detail/Diodes-General-Purpose_GW-1N4006_C331632.html - Package or Case Code: DO-41_BD2.4-L4.7-P8.70-D0.9-RD - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_GW-1N4006_C331632.pdf - Role: Startup Bypass - JLCPCB Part Class: Extended Part **Pins:** - A [pin 2] - C [pin 1] ### D3 — [S1K-13-F](https://www.flux.ai/lcsc/s1k-13-f~6vyo.md) - LCSC Part Number: C507833 - Manufacturer Name: DIODES(美台) - Role: Snubber Diode - Role Details: DER-920 RCD snubber diode - Manufacturer Part Number: S1K-13-F - Package or Case Code: SMA_L4.3-W2.6-LS5.2-RD - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-S1K-13-F_C507833.pdf - Product Info Url: https://lcsc.com/product-detail/Diodes-General-Purpose_Diodes-Incorporated-S1K-13-F_C507833.html - Part Type: Diodes - General Purpose **Pins:** - A [pin 2] - K [pin 1] ### D4 — [STTH3R04S](https://www.flux.ai/lcsc/stth3r04s~zn6x.md) - Role: Output Rectifier - Role Details: Secondary output rectifier - Manufacturer Name: ST(意法半导体) - LCSC Part Number: C123323 - Part Type: Diodes - Fast Recovery Rectifiers - Product Info Url: https://lcsc.com/product-detail/Diodes-Rectifiers-Hyperfast_STMicroelectronics_STTH3R04S_STMicroelectronics-STTH3R04S_C123323.html - Manufacturer Part Number: STTH3R04S - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_STMicroelectronics-STTH3R04S_C123323.pdf - Package or Case Code: SMC_L6.9-W5.9-LS7.9-RD - JLCPCB Part Class: Extended Part **Pins:** - A [pin 2] - C [pin 1] ### D5 — [LQA03TC600](https://www.flux.ai/lcsc/lqa03tc600~rasm.md) - Package or Case Code: TO-220-2_L10.2-W4.5-P5.08-L-1 - Manufacturer Part Number: LQA03TC600 - Role Details: Power Integrations LQA03TC600 600V 3A - Role: Boost Diode - Manufacturer Name: Power Integrations(帕沃英蒂格盛) - LCSC Part Number: C568322 - Part Type: Pre-ordered Products **Pins:** - A [pin 3] - A [pin 1] ### D7 — [DFLR1400-7](https://www.flux.ai/lcsc/dflr1400-7~oy2i.md) - Manufacturer Name: DIODES(美台) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_Diodes-Incorporated-DFLR1400-7_C211398.pdf - Manufacturer Part Number: DFLR1400-7 - Role Details: U4 primary auxiliary winding rectifier - Product Info Url: https://lcsc.com/product-detail/Diodes-General-Purpose_Diodes-Incorporated_DFLR1400-7_Diodes-Incorporated-DFLR1400-7_C211398.html - JLCPCB Part Class: Extended Part - Role: Auxiliary Rectifier - Package or Case Code: POWERDI-123_L2.8-W1.8-LS3.7-RD - Part Type: Diodes - General Purpose - LCSC Part Number: C211398 **Pins:** - 1 [pin 1] - 2 [pin 2] ### D9 — [B340A-13-F](https://www.flux.ai/adrian95/b340a-13-f~1zv.md) - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds30891.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: B340A-13-F - Manufacturer Name: Diodes Incorporated - Role Details: Schottky protection diode across current sense - Role: Sense Protection **Pins:** - A [pin 2] - K [pin 1] ### F1 — [PTU 3.15A 250V](https://www.flux.ai/lcsc/ptu-3p15a-250v~too.md) - Role Details: 3.15A 250V slow-blow fuse placeholder from DER-920 - JLCPCB Part Class: Extended Part - Role: Input Protection - Part Type: Cartridge Fuses - Package or Case Code: FUSE-TH_BD3.9-L11.0-P15.00-D0.6 - Manufacturer Name: CONQUER(功得) - Manufacturer Part Number: PTU 3.15A 250V - Product Info Url: https://lcsc.com/product-detail/Blade-Fuses_CONQUER-PTU-3-15A-250V_C388811.html - LCSC Part Number: C388811 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_CONQUER-PTU-3-15A-250V_C388811.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — [1730405](https://www.flux.ai/adrian95/1730405.md) - Manufacturer Part Number: 1730405 - Manufacturer Name: Phoenix Contact - Datasheet URL: https://www.phoenixcontact.com/en-us/products/printed-circuit-board-terminal-mkds-25-3-508-1730405?type=pdf - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Placeholder for On Shore ED120/3DS 3-position 5.08mm terminal block - Role: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### J2 — [236-102](https://www.flux.ai/cherepanyadima/236-102~pe.md) - Manufacturer Name: https://wago.priintcloud.com/datasheets/236-102/en/ - Datasheet URL: https://wago.priintcloud.com/datasheets/236-102/en/ - Manufacturer Part Number: 236-102 - Role Details: Placeholder for On Shore ED500/2DS 2-position 5mm terminal block - Part Type: Connector - Role: Connector - Symbol Style: Parametric **Pins:** - ~ [pin L1] - ~ [pin L2] ### J6 — [236-102](https://www.flux.ai/cherepanyadima/236-102~pe.md) - Manufacturer Part Number: 236-102 - Manufacturer Name: https://wago.priintcloud.com/datasheets/236-102/en/ - Datasheet URL: https://wago.priintcloud.com/datasheets/236-102/en/ - Role: Connector - Symbol Style: Parametric - Role Details: Placeholder for On Shore ED500/2DS 2-position 5mm terminal block - Part Type: Connector **Pins:** - ~ [pin L1] - ~ [pin L2] ### Q1 — [MMBTA06](https://www.flux.ai/lcsc/mmbta06~l43r.md) - Manufacturer Part Number: MMBTA06 - Role: Bias Regulator - Package or Case Code: SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR - Part Type: Bipolar Transistors - BJT - Product Info Url: https://lcsc.com/product-detail/Transistors-NPN-PNP_UMW-Youtai-Semiconductor-Co-Ltd-MMBTA06_C545555.html - Role Details: 12V series pass regulator for PFS VCC - LCSC Part Number: C545555 - Manufacturer Name: UMW(友台半导体) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2311091736_UMW-Youtai-Semiconductor-Co---Ltd--MMBTA06_C545555.pdf - JLCPCB Part Class: Extended Part **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q3 — [MMBT3906LT1G](https://www.flux.ai/adrian95/mmbt3906lt1g~xck.md) - Datasheet URL: https://www.onsemi.com/pdf/datasheet/mmbt3906lt1-d.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 3-in-1 variable resistance dimming current source - Manufacturer Name: onsemi - Manufacturer Part Number: MMBT3906LT1G - Role: Biasing **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### Q5 — [2N7002,215](https://www.flux.ai/adrian95/2n7002215~nwc.md) - Manufacturer Part Number: 2N7002,215 - Role Details: Dimming startup blanking switch - Manufacturer Name: Nexperia USA Inc. - Part Type: Transistor - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/2N7002.pdf - Role: Soft Start - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D [pin 2] - G [pin 1] - S [pin 3] ### Q6 — [MMBTA06](https://www.flux.ai/lcsc/mmbta06~l43r.md) - Role Details: DER-920 dimming/control transistor - Part Type: Bipolar Transistors - BJT - Package or Case Code: SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR - Manufacturer Part Number: MMBTA06 - Role: Switching - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2311091736_UMW-Youtai-Semiconductor-Co---Ltd--MMBTA06_C545555.pdf - JLCPCB Part Class: Extended Part - Manufacturer Name: UMW(友台半导体) - LCSC Part Number: C545555 - Product Info Url: https://lcsc.com/product-detail/Transistors-NPN-PNP_UMW-Youtai-Semiconductor-Co-Ltd-MMBTA06_C545555.html **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### RT1 — [NTC2.5D-11](https://www.flux.ai/lcsc/ntc2p5d-11~0nmg.md) - Manufacturer Name: FH(风华) - Manufacturer Part Number: NTC2.5D-11 - Part Type: NTC Thermistors - LCSC Part Number: C2847910 - Role Details: 2.5 ohm 3A NTC thermistor placeholder - Package or Case Code: RES-TH_L12.5-W5.0-P7.50-D0.8-S4.20 - Role: Inrush Limiter - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### RV1 — [B72210S0271K101](https://www.flux.ai/cherepanyadima/b72210s0271k101~3w.md) - Manufacturer Part Number: B72210S0271K101 - Part Type: Varistor - Role: Surge Protection - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: EPCOS - TDK Electronics - Datasheet URL: https://www.tdk-electronics.tdk.com/inf/70/db/var/SIOV_Leaded_StandarD.pdf - Role Details: MOV placeholder; DER-920 BOM uses 300VAC V300LA4P **Pins:** - 1 [pin 1] - 2 [pin 2] ### T2 — [Generic Inductor](https://www.flux.ai/jharwinbarrozo/generic-inductor~wlv.md) - Role: Boost Inductor - Inductance: 1050uH - Role Details: Custom EF25 1050uH PFC inductor; symbol is a 2-pin placeholder - Package: SMD_0603_1608Metric - Part Type: Inductor **Pins:** - P1 [pin 1] - P2 [pin 2] ### U2 — [PFS7624C-TL](https://www.flux.ai/lcsc/pfs7624c-tl~hdts.md) - Role: PFC Controller - Part Type: Pre-ordered Products - Package or Case Code: INSOP-24D_L10.8-W9.4-P0.75-LS13.4-BL - Manufacturer Part Number: PFS7624C-TL - Role Details: Power Integrations PFS7624C HiperPFS-4 controller - LCSC Part Number: C568277 - Manufacturer Name: Power Integrations(帕沃英蒂格盛) **Pins:** - C [pin 5] - D [pin 16] - FB [pin 6] - G [pin 12] - G [pin 2] - NC [pin 10] - NC [pin 13] - NC [pin 14] - NC [pin 11] - NC [pin 9] - NC [pin 15] - PG [pin 7] - PGT [pin 8] - REF [pin 3] - S [pin 24] - V [pin 4] - VCC [pin 1] ### U3 — [TL431BQDBZR](https://www.flux.ai/tecnico01/tl431bqdbzr~32.md) - Role Details: Placeholder for LM431BIM3/NOPB adjustable shunt regulator - Manufacturer Part Number: TL431BQDBZR - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: SOT95P237X112-3N - Role: Voltage Reference **Pins:** - ANODE [pin 3] - CATHODE [pin 2] - REF [pin 1] ### U4 — [LYT6079C-TL](https://www.flux.ai/lcsc/lyt6079c-tl~obv6.md) - Part Type: Pre-ordered Products - Role Details: PLACEHOLDER: exact LYT6078C not found; closest same-family InSOP-24D symbol used unconnected only - LCSC Part Number: C567771 - Package or Case Code: INSOP-24D_L10.8-W9.4-P0.75-LS13.4-BL - Role: Flyback Controller - Manufacturer Part Number: LYT6078C target / LYT6079C-TL placeholder - Manufacturer Name: Power Integrations(帕沃英蒂格盛) **Pins:** - BPP [pin 14] - BPS [pin 4] - D [pin 24] - FB [pin 3] - FWD [pin 7] - GND [pin 2] - IS [pin 1] - NC [pin 11] - NC [pin 10] - NC [pin 8] - NC [pin 12] - NC [pin 9] - NC [pin 15] - S [pin 16] - SR [pin 5] - V [pin 13] - VOUT [pin 6] ### U5 — [TSX712IDT](https://www.flux.ai/lcsc/tsx712idt~4er8.md) - Manufacturer Name: ST(意法半导体) - Role: Amplification - Role Details: Dimming current sense amplifier and comparator/injection loop - Manufacturer Part Number: TSX712IDT - Package or Case Code: SOIC-8_L4.9-W3.8-P1.27-LS6.0-BL - LCSC Part Number: C2058131 - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin OUT A] - 1 [pin 1] - 7 [pin OUT B] - 8 [pin V+] - IN A- [pin 2] - IN A+ [pin 3] - IN B- [pin 6] - IN B+ [pin 5] - V- [pin 4] ### VR1 — [Generic Silicon Diode](https://www.flux.ai/jharwinbarrozo/generic-silicon-diode~h9.md) - Package: SMD_0603_1608Metric - Diode Type: Zener - Part Type: Diode - Voltage: 13V - Role Details: Placeholder for MMSZ4700T1G 13V zener - Role: Voltage Clamp **Pins:** - A [pin 2] - K [pin 1] ### VR2 — [BZT52C12-13-F](https://www.flux.ai/adrian95/bzt52c12-13-f~6nn.md) - Role: Clamping - Manufacturer Name: Diodes Incorporated - Role Details: Dimming input protection zener - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds18004.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BZT52C12-13-F **Pins:** - A [pin 2] - K [pin 1] ### VR3 — [Generic Silicon Diode](https://www.flux.ai/jharwinbarrozo/generic-silicon-diode~h9.md) - Diode Type: Zener - Part Type: Diode - Role: Clamping - Package: SMD_0603_1608Metric - Voltage: 13V - Role Details: Placeholder for MMSZ4700T1G 13V zener **Pins:** - A [pin 2] - K [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/nani1214/der-920-led-driver-reference~vl](https://www.flux.ai/nani1214/der-920-led-driver-reference~vl).* --- *Generated from [https://www.flux.ai/nani1214/der-920-led-driver-reference~vl](https://www.flux.ai/nani1214/der-920-led-driver-reference~vl)*