# 5V 4A eFuse TVS Board ## Description Reusable 5 V, 4 A eFuse protection and distribution board with configurable TVS, bulk capacitance, and indicator options. ## Project Details - **Owner:** cdepriest - **Created:** 8/3/2026 - **Last Updated:** 8/4/2026 - **Visibility:** Public ## Key Components ### D1 — [1.5KExxA](https://www.flux.ai/kicad-part-library/1p5kexxa~n4.md) - Functional Group: Output Protection - Manufacturer Part Number: 1.5KExxA - Part Type: Diode THT - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: D_DO-201AE_P15.24mm_Horizontal - Datasheet URL: https://www.vishay.com/docs/88301/15ke.pdf **Pins:** - A1 [pin 1] - A2 [pin 2] ### H1 — [M3 Mounting Hole](https://www.flux.ai/vasyl/m3-mounting-hole~kc3.md) - Functional Group: Mechanical - Product Info Url: https://www.mcmaster.com/screws/drive-style~torx/rounded-head-style~pan/material~steel/specifications-met~iso-7045/thread-size~m3/finish~zinc-plated/ **Pins:** - terminal ### H2 — [M3 Mounting Hole](https://www.flux.ai/vasyl/m3-mounting-hole~kc3.md) - Functional Group: Mechanical - Product Info Url: https://www.mcmaster.com/screws/drive-style~torx/rounded-head-style~pan/material~steel/specifications-met~iso-7045/thread-size~m3/finish~zinc-plated/ **Pins:** - terminal ### H3 — [M3 Mounting Hole](https://www.flux.ai/vasyl/m3-mounting-hole~kc3.md) - Functional Group: Mechanical - Product Info Url: https://www.mcmaster.com/screws/drive-style~torx/rounded-head-style~pan/material~steel/specifications-met~iso-7045/thread-size~m3/finish~zinc-plated/ **Pins:** - terminal ### H4 — [M3 Mounting Hole](https://www.flux.ai/vasyl/m3-mounting-hole~kc3.md) - Functional Group: Mechanical - Product Info Url: https://www.mcmaster.com/screws/drive-style~torx/rounded-head-style~pan/material~steel/specifications-met~iso-7045/thread-size~m3/finish~zinc-plated/ **Pins:** - terminal ### J1 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Connector Pitch: 5.08mm - Connector Rows: 1 - Connector Gender: Female - Current Rating: 24A - Operating Temperature: -40℃~+105℃ - JLCPCB Part Class: Extended Part - Connector Type: Screw terminal - Part Type: Screw terminal - LCSC Part Number: C474952 - Connector Positions: 2 - Manufacturer Name: KEFA(科发) - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Functional Group: Power Terminals - Manufacturer Part Number: KF128-5.08-2P-AA **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - Manufacturer Part Number: KF128-5.08-2P-AA - Connector Gender: Female - Connector Rows: 1 - Functional Group: Power Terminals - Connector Pitch: 5.08mm - Operating Temperature: -40℃~+105℃ - Current Rating: 24A - Part Type: Screw terminal - Connector Type: Screw terminal - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Manufacturer Name: KEFA(科发) - Connector Positions: 2 - LCSC Part Number: C474952 **Pins:** - 1 [pin 1] - 2 [pin 2] ### J3 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Manufacturer Part Number: KF128-5.08-2P-AA - Functional Group: Power Terminals - Current Rating: 24A - Operating Temperature: -40℃~+105℃ - Connector Pitch: 5.08mm - Connector Rows: 1 - Connector Gender: Female - LCSC Part Number: C474952 - Connector Positions: 2 - Manufacturer Name: KEFA(科发) - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - JLCPCB Part Class: Extended Part - Connector Type: Screw terminal - Part Type: Screw terminal **Pins:** - 1 [pin 1] - 2 [pin 2] ### J4 — [KF128-5.08-2P-AA](https://www.flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md) - Part Type: Screw terminal - Connector Type: Screw terminal - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/New-Quadratic-Unclassified-Data_Cixi-Kefa-Elec-KF128-5-08-2P_C474952.html - Manufacturer Name: KEFA(科发) - LCSC Part Number: C474952 - Connector Positions: 2 - Connector Gender: Female - Connector Rows: 1 - Connector Pitch: 5.08mm - Operating Temperature: -40℃~+105℃ - Current Rating: 24A - Manufacturer Part Number: KF128-5.08-2P-AA - Functional Group: Power Terminals - Package or Case Code: CONN-TH_P5.08_KF128-5.08-2P - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2408211511_Cixi-Kefa-Elec-KF128-5-08-2P-AA_C474952.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### LED1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee~a2.md) - Functional Group: Optional Indicator - Manufacturer Name: Lite-On Inc. - Part Type: LED - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Manufacturer Part Number: LTL-307EE **Pins:** - A [pin 2] - K [pin 1] ### U1 — [TPS25940LRVCR](https://www.flux.ai/adrian95/tps25940lrvcr~ojd.md) - Symbol Style: parametric-v1 - Functional Group: eFuse Protection - Role Details: 5 V rail, 4 A continuous, 5 A absolute input; 20k ILIM gives 4.45 A typical - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - Manufacturer Part Number: TPS25940LRVCR - Role: Power Protection - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps25940.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~FLT [pin 20] - DEVSLP [pin 1] - DVDT [pin 18] - EN [pin 14] - EP [pin 21] - GND [pin 16] - ILIM [pin 17] - IMON [pin 19] - IN_1 [pin 9] - IN_2 [pin 10] - IN_3 [pin 11] - IN_4 [pin 12] - IN_5 [pin 13] - OUT_1 [pin 4] - OUT_2 [pin 5] - OUT_3 [pin 6] - OUT_4 [pin 7] - OUT_5 [pin 8] - OVP [pin 15] - PGOOD [pin 2] - PGTH [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/cdepriest/5v-4a-efuse-tvs-board~ec](https://www.flux.ai/cdepriest/5v-4a-efuse-tvs-board~ec).* --- *Generated from [https://www.flux.ai/cdepriest/5v-4a-efuse-tvs-board~ec](https://www.flux.ai/cdepriest/5v-4a-efuse-tvs-board~ec)*