{
    "meta": {
        "title": "D-Central — ASIC Diode & Voltage Reference",
        "description": "Board-repair reference for 20 Antminer models: Bitmain AMTC factory diode-mode RESISTANCE values (ohms) for the S17/S19 families, plus chip, voltage domains, chips per board, nominal domain voltage and input/boost voltage.",
        "generated": "2026-06-19T05:05:56+00:00",
        "version": "1.0",
        "license": "https://creativecommons.org/licenses/by/4.0/",
        "license_name": "CC BY 4.0",
        "source": "https://d-central.tech/asic-diode-voltage-reference/",
        "critical_note": "The AMTC \"diode\" figures are RESISTANCE in OHMS read in a multimeter's diode mode — NOT a forward-voltage drop. Never interpret them as volts. Domain voltage is regulated per DOMAIN, not per chip.",
        "record_count": 20,
        "provenance": "D-Central Mining Bible: DIODE_VOLTAGE_REFERENCE.md (Bitmain AMTC, measured on a Fluke 15B+) + HASHBOARD_DIAGNOSTICS.md, with the Laval ASIC repair bench (since 2016).",
        "disclaimer": "A reference, not a guarantee — meter, board revision and batch shift these values. Use as a guide, not absolute pass/fail; measure your own board unpowered first. Black probe to board ground, NEVER the heatsink."
    },
    "rows": [
        {
            "id": "antminer-s17",
            "model": "Antminer S17",
            "chip": "BM1393",
            "domains": 12,
            "chips_per_board": 48,
            "domain_voltage_v": 1.5500000000000000444089209850062616169452667236328125,
            "input_voltage_v": null,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1200±20, RST 1200±20, RX/RI 420±20, TX/CO 1200±20, CLK 1200±20, LDO1.8V 400±20, LDO0.8V 20±5",
            "notes": "Powered pin voltages: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. Bitmain AMTC values, Fluke 15B+. Domain V 1.55 / total 18.5V from arch doc."
        },
        {
            "id": "antminer-s17-plus",
            "model": "Antminer S17+",
            "chip": "BM1397",
            "domains": 12,
            "chips_per_board": null,
            "domain_voltage_v": null,
            "input_voltage_v": null,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1200±20, RST 1200±20, RX/RI 420±20, TX/CO 1200±20, CLK 1200±20, LDO1.8V 400±20, LDO0.8V 20±5",
            "notes": "Powered pin voltages: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. BM1397 QFN-34, 12 domains per chip-gen table. Bitmain AMTC, Fluke 15B+."
        },
        {
            "id": "antminer-s17e",
            "model": "Antminer S17e",
            "chip": "BM1397",
            "domains": 12,
            "chips_per_board": null,
            "domain_voltage_v": null,
            "input_voltage_v": null,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1015±50, RST 970±50, RX/RI 500±50, TX/CO 1015±50, CLK 1015±50, LDO1.8V 400±50, LDO0.8V 25±5",
            "notes": "Different die rev: wider ±50 tolerances, lower impedance. Powered pins: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. BM1397."
        },
        {
            "id": "antminer-t17",
            "model": "Antminer T17",
            "chip": "BM1393",
            "domains": 12,
            "chips_per_board": null,
            "domain_voltage_v": null,
            "input_voltage_v": null,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1200±20, RST 1200±20, RX/RI 420±20, TX/CO 1200±20, CLK 1200±20, LDO1.8V 400±20, LDO0.8V 20±5",
            "notes": "Powered pin voltages: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. BM1393, 12 domains. Bitmain AMTC, Fluke 15B+."
        },
        {
            "id": "antminer-t17-plus",
            "model": "Antminer T17+",
            "chip": "BM1397",
            "domains": 12,
            "chips_per_board": null,
            "domain_voltage_v": null,
            "input_voltage_v": null,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1200±20, RST 1200±20, RX/RI 420±20, TX/CO 1200±20, CLK 1200±20, LDO1.8V 400±20, LDO0.8V 20±5",
            "notes": "Powered pin voltages: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. BM1397, 12 domains. Bitmain AMTC, Fluke 15B+."
        },
        {
            "id": "antminer-t17e",
            "model": "Antminer T17e",
            "chip": "BM1397",
            "domains": 12,
            "chips_per_board": null,
            "domain_voltage_v": null,
            "input_voltage_v": null,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1015±50, RST 970±50, RX/RI 500±50, TX/CO 1015±50, CLK 1015±50, LDO1.8V 400±50, LDO0.8V 25±5",
            "notes": "Matches S17e (same die rev). Powered pins: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. BM1397."
        },
        {
            "id": "antminer-s19",
            "model": "Antminer S19",
            "chip": "BM1398",
            "domains": 38,
            "chips_per_board": 76,
            "domain_voltage_v": 0.35999999999999998667732370449812151491641998291015625,
            "input_voltage_v": 14,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1220±20, RST 980±20, RX/RI 390±20, TX/CO 1220±20, CLK 1220±20, 1.8V 440±20, 0.8V 20±5",
            "notes": "76 chips / 38 domains (2/domain). Boost 14V in → 19V out. Powered pins: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. PIC U3, EEPROM U5."
        },
        {
            "id": "antminer-s19-pro",
            "model": "Antminer S19 Pro",
            "chip": "BM1398",
            "domains": 38,
            "chips_per_board": 114,
            "domain_voltage_v": 0.320000000000000006661338147750939242541790008544921875,
            "input_voltage_v": 12.5999999999999996447286321199499070644378662109375,
            "diode_resistance": "Diode-mode resistance (Ω): BI/BO 1220±20, RST 980±20, RX/RI 390±20, TX/CO 1220±20, CLK 1220±20, 1.8V 440±20, 0.8V 20±5",
            "notes": "114 chips / 38 domains (3/domain). Boost 12.6V in → 20V out via Q9. Powered pins: BI/BO 0V; RST/RX/TX 1.7±0.1V; CLK 0.7-0.9V. PIC U6, EEPROM U10."
        },
        {
            "id": "antminer-s19j-pro",
            "model": "Antminer S19j Pro",
            "chip": "BM1398",
            "domains": 42,
            "chips_per_board": 126,
            "domain_voltage_v": 0.299999999999999988897769753748434595763683319091796875,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "126 chips / 42 domains (3/domain). Boost output 19V. PIC + EEPROM present, 4 temp sensors, Y1 25MHz. No AMTC diode-resistance table given for this model."
        },
        {
            "id": "antminer-s19-xp",
            "model": "Antminer S19 XP",
            "chip": "BM1366",
            "domains": null,
            "chips_per_board": 110,
            "domain_voltage_v": 0.40000000000000002220446049250313080847263336181640625,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "110 chips; domains/chips-per-domain listed as 'Varies'. Domain voltage ~0.4V (Bible uses ~). Boost output 19V. BM1366. No AMTC diode-resistance table for this model."
        },
        {
            "id": "antminer-s21-t21",
            "model": "Antminer S21 / T21",
            "chip": "BM1368",
            "domains": 12,
            "chips_per_board": 108,
            "domain_voltage_v": 1.1999999999999999555910790149937383830547332763671875,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "108 chips / 12 domains (9/domain). Domain V ~1.2V (Bible uses ~). Boost ~25V via U206. No PIC. EEPROM U6, Y1 25MHz. No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-s21-pro",
            "model": "Antminer S21 Pro",
            "chip": "BM1370",
            "domains": null,
            "chips_per_board": null,
            "domain_voltage_v": 1,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "Domain V ~1.0V (Bible uses ~). Boost output ~21V. Chips/domains listed 'Varies'. No PIC. BM1370, Y1 25MHz. No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-s21-xp",
            "model": "Antminer S21 XP",
            "chip": "BM1370",
            "domains": 13,
            "chips_per_board": 91,
            "domain_voltage_v": 1.04000000000000003552713678800500929355621337890625,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "91 chips / 13 domains (7/domain). Domain V ~1.04V (Bible uses ~). Boost output ~21V. 12 level shifters U1-U12. No PIC. No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-s21-plus-hydro",
            "model": "Antminer S21+ Hydro",
            "chip": "BM1370",
            "domains": null,
            "chips_per_board": null,
            "domain_voltage_v": 1,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "Domain V ~1.0V (Bible uses ~). Boost output ~21V. Chips/domains 'Varies'. No PIC. BM1370, Y1 25MHz. No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-s9",
            "model": "Antminer S9",
            "chip": "BM1387",
            "domains": 21,
            "chips_per_board": 63,
            "domain_voltage_v": 0.40000000000000002220446049250313080847263336181640625,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "63 chips / 21 domains (3/domain), total 8.4V. Signal levels: CLK 0.8-0.9V, CI/CO 0-0.4V, RI/RO 0-0.4V, RST 0-0.4V. No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-s9k-s9se",
            "model": "Antminer S9k / S9SE",
            "chip": "BM1387",
            "domains": 6,
            "chips_per_board": 60,
            "domain_voltage_v": 1.600000000000000088817841970012523233890533447265625,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "60 chips / 6 domains (10/domain), total 9.6V. BM1387. No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-l3-plus",
            "model": "Antminer L3+",
            "chip": "BM1485",
            "domains": 12,
            "chips_per_board": 72,
            "domain_voltage_v": 0.8000000000000000444089209850062616169452667236328125,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "72 chips / 12 domains (6/domain), total 9.6V. BM1485 (Scrypt). No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-s15",
            "model": "Antminer S15",
            "chip": "BM1391",
            "domains": 12,
            "chips_per_board": 72,
            "domain_voltage_v": 1.5300000000000000266453525910037569701671600341796875,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "72 chips / 12 domains (6/domain), total 18.36V. BM1391. No AMTC diode-resistance table given."
        },
        {
            "id": "antminer-t15",
            "model": "Antminer T15",
            "chip": "BM1391",
            "domains": 12,
            "chips_per_board": 72,
            "domain_voltage_v": 1.649999999999999911182158029987476766109466552734375,
            "input_voltage_v": null,
            "diode_resistance": null,
            "notes": "72 chips / 12 domains (6/domain), total 19.8V. BM1391. No AMTC diode-resistance table given."
        },
        {
            "id": "general-procedure",
            "model": "(general diode-test guidance)",
            "chip": null,
            "domains": null,
            "chips_per_board": null,
            "domain_voltage_v": null,
            "input_voltage_v": null,
            "diode_resistance": "Healthy: all domains within ±50mV of each other. >100mV below average = partial short (failed chip/blown cap). Above average = open circuit (broken trace/cracked joint).",
            "notes": "Bitmain AMTC diode values measured in diode/resistance mode with Fluke 15B+; other meters/board batches vary - use as reference not absolute pass/fail. Black probe to board ground, NEVER the heatsink (short risk). Unpowered domain-impedance check: low=short, high=open."
        }
    ]
}