SKD82/16 - 80A 1600V Bridge Rectifier | Semikron SEMIPONT 3
부품 번호: SKD82/16 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $38.5 | $38.50 |
| 10 | $34.2 | $342.00 |
| 100 | $29.8 | $2,980.00 |
| 500 | $26.5 | $13,250.00 |
| 1,000 | $24.1 | $24,100.00 |
SKD82/16 개요
A power bridge rectifier is a discrete-semiconductor module that converts three-phase AC input into a single-polarity DC output by steering current through six rectifier legs. In the wider taxonomy, it sits within silicon power diodes, which are categorized as discrete semiconductors and serve as foundational building blocks of industrial power electronics - feeding variable frequency drives, battery chargers, DC motor fields, and front-end rectifier stages of switch-mode power supplies.
Key electrical specifications include a maximum forward voltage of approximately 1.55 V per leg at rated current, a low thermal resistance junction-to-ambient of 1.8 K/W when mounted on a 250x250x1 mm painted metal heatsheet, and an isolated metal baseplate that simplifies chassis grounding and paralleling with neighboring modules. The module accepts standard M5 power terminals and M6 mounting bolts, simplifying mechanical integration into existing SEMIPONT 3 design footprints.
The SKD82/16 uses a standard six-pulse three-phase uncontrolled bridge topology, which is the most rugged and cost-effective AC-to-DC conversion method for industrial loads. Its silicon rectifier dice are pressure-contacted to the copper baseplate rather than soldered, which improves thermal cycling endurance and enables higher surge-current tolerance than equivalent PCB-mount bridge assemblies.
Typical applications include AC-to-DC front-end rectifiers for variable frequency drives (VFDs), input rectifier stages for industrial switch-mode power supplies, battery-charger power stages, and DC motor field-supply rectifiers. Its 1600 V rating comfortably covers 480 V AC and 600 V AC three-phase industrial bus inputs when derated per IEC 60146.
When designing with the SKD82/16, ensure adequate heatsinking: at full 80 A load with a 1.55 V drop, the module dissipates approximately 124 W of conduction loss, and at 1.8 K/W the junction will sit well above ambient without a substantial heatsink. AC-line fuses sized to I^2t of the diode, plus an RC snubber across each leg, are recommended to limit dv/dt-induced reverse-recovery stress on the bridge.
This page synthesizes distributor pricing, drop-in alternatives and practical design notes for the SKD82/16 not found in the manufacturer datasheet alone, including cross-brand SEMIPONT 3 family equivalents and paralleled-module thermal guidance.
드롭인 대체품: SKD82/16 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
SKD 82/12
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
SKD 80/16
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
SKB 80/16
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
SKD 82/14
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
VUO82-16NO7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
SKD82/16 최대 정격 & 전기적 특성
| Manufacturer | Semikron (Semikron Danfoss) |
| Product Family | SEMIPONT 3 |
| 토폴로지 | Three-phase uncontrolled bridge rectifier |
| Maximum Average Output Current (Id) | 80 A |
| Repetitive Peak Reverse Voltage (VRRM) | 1600 V |
| Non-Repetitive Peak Forward Surge Current (IFSM) | 750 A |
| 동작 접합 온도 범위 | -40 C to +150 C |
| Storage Temperature Range | -40 C to +150 C |
| Thermal Resistance Junction to Ambient (Rth(s-a)) | 1.8 K/W (mounted on 250x250x1 mm painted metal sheet) |
| 장착 스타일 | Chassis screw mount (M6 bolts) |
| Power Terminals | M5 screw terminals |
| Package Type | SEMIPONT 3 module (5-pin chassis) |
| Mounting Torque (M6) | 5 Nm (typical for SEMIPONT 3) |
| RoHS 상태 | RoHS compliant per datasheets.com listing |
| SVHC Compliance | Not SVHC compliant per datasheets.com listing |
| Radiation Hardened | No |
SKD82/16 핀 구성
| 핀 1 | L1 (Phase A Input) — Three-phase AC line input terminal 1 (M5 screw) |
| 핀 2 | L2 (Phase B Input) — Three-phase AC line input terminal 2 (M5 screw) |
| 핀 3 | L3 (Phase C Input) — Three-phase AC line input terminal 3 (M5 screw) |
| 핀 4 | DC+ (Positive Output) — Positive DC output terminal (M5 screw) |
| 핀 5 | DC- (Negative Output) — Negative DC output terminal / heatsink tab (M5 screw) |
Forward Surge Current vs. Pulse Duration (IFSM)
일반적인 애플리케이션
SKD82/16 적합 용도: 7 애플리케이션s: Variable Frequency Drive (VFD) Input Rectifier, Industrial Switch-Mode Power Supply (SMPS) Front End, Battery Charger Rectifier (Forklift, EV Depot, Marine), DC Motor Field Supply Rectifier, Electrolysis and Electroplating Power Supply, Welding Power Source Front End, UPS Three-Phase Rectifier Stage.
Variable Frequency Drive (VFD) Input Rectifier
The SKD82/16 is a natural fit for the AC-to-DC front-end of industrial VFDs feeding 480 V AC or 600 V AC three-phase mains. Its 1600 V VRRM provides a 2.5x safety margin over the peak line-to-line voltage of a 600 V AC bus, and the 80 A average current rating covers drives up to approximately 37 kW at 400 V DC link. The 750 A IFSM absorbs the inrush current of the DC-link capacitor bank at soft-start, while the SEMIPONT 3 chassis bolts directly to the drive's extruded aluminum heatsink. Compared with discrete six-diode bridges, the SKD82/16's pressure-contacted dice deliver superior thermal-cycling endurance in the harsh under-the-panel environment of a factory-floor drive cabinet.
추천
Industrial Switch-Mode Power Supply (SMPS) Front End
The SKD82/16 forms the input rectifier bridge for 5-30 kW industrial SMPS used in factory automation, telecom central-office rectifiers, and process-control cabinets. At 80 A DC output, it can feed a 400 V DC bus that delivers approximately 30 kW to the downstream PFC + LLC converter stages. The bridge's low conduction loss (about 124 W at full load) reduces cooling burden on the heatsink shared with the PFC MOSFETs. Semikron's SEMIPONT 3 mechanical outline is widely second-sourced, simplifying UL 60950 / IEC 62368-1 safety certification when reusing a pre-approved chassis layout in a new design.
추천
Battery Charger Rectifier (Forklift, EV Depot, Marine)
Forklift, depot EV and marine battery chargers require a rugged, surge-tolerant three-phase bridge to feed the charger DC bus directly off 480 V AC industrial mains. The SKD82/16's 750 A IFSM tolerates the repetitive inrush of connecting to deeply discharged battery banks at the charger output terminals. The 1600 V VRRM also handles the reflected line transients common in forklift charging stations with shared branch circuits. The chassis-mount SEMIPONT 3 package stands up to the vibration and thermal cycling of mobile and marine battery-charger installations far better than PCB-mount bridge assemblies.
추천
DC Motor Field Supply Rectifier
Large industrial DC motors used in steel mills, paper machines, and mining drives require a stable, high-current field supply derived from three-phase AC. The SKD82/16's 80 A continuous rating covers DC motor fields up to roughly 80 A excitation current, and its low forward voltage drop minimizes the dissipation that would otherwise waste power in the field-winding controller. The module's isolated baseplate simplifies the safety-grounding arrangement required by NEC 430 motor-circuit standards, and the SEMIPONT 3 footprint matches legacy retrofit installations in steel-mill DC drives.
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Electrolysis and Electroplating Power Supply
Industrial electroplating, anodizing, and electrolysis rectifiers use the SKD82/16 to deliver high-current low-voltage DC from three-phase AC mains. At 80 A output the module can supply plating baths in the 12-48 V A range at up to 4 kW per rectifier module, with multiple SKD82/16 units paralleled for higher-current plating lines. The 1600 V VRRM easily handles the 480 V AC input, and the module's proven 750 A surge rating tolerates the intermittent arc events that occur when plating electrodes make and break the bath surface.
추천
Welding Power Source Front End
Three-phase welding power sources use the SKD82/16 as the first-stage rectifier feeding the welding inverter or chopper. The module's 80 A rating supports inverter-type welders up to about 20-25 kW output, while its 1600 V VRRM handles the line transients of shop-floor 600 V AC feeders. The 750 A surge rating is critical for welders, which routinely experience output short-circuits when the electrode strikes an arc - the SKD82/16's pressure-contacted dice recover reliably from these repetitive surge events.
추천
UPS Three-Phase Rectifier Stage
Three-phase uninterruptible power supplies (UPS) at the 20-40 kVA range use the SKD82/16 as the rectifier front-end between the AC mains and the DC bus that feeds the inverter and battery bank. The 1600 V VRRM comfortably covers 480 V AC inputs, and the 80 A continuous rating supports UPS systems up to approximately 30 kW. The module's proven reliability and the SEMIPONT 3 footprint align with the design patterns used in major three-phase UPS product lines, simplifying both new designs and field retrofits in data-center and industrial UPS installations.
추천
추천 제품 요약
엔지니어링 참조 데이터: SKD82/16 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | SKD 82/12 | SKD 80/16 | SKB 80/16 | SKD 82/14 | VUO82-16NO7 |
|---|---|---|---|---|---|---|
| Brand | Semikron | Semikron | Semikron | Semikron | Semikron | IXYS |
| Package | SEMIPONT 3 (5-pin chassis) | SEMIPONT 3 (5-pin chassis) - same | SEMIPONT 3 (5-pin chassis) - same | SEMIPONT 1 (chassis) - different mechanical outline | SEMIPONT 3 (5-pin chassis) - same | FO-T bridge module (chassis-mount) - similar footprint |
| Maximum Average Output Current | 80 A | 80 A | 80 A | 80 A | 80 A | 82 A |
| Repetitive Peak Reverse Voltage (VRRM) | 1600 V | 1200 V | 1600 V | 1600 V | 1400 V | 1600 V |
| Topology | Three-phase uncontrolled bridge | Three-phase uncontrolled bridge | Three-phase uncontrolled bridge | Three-phase uncontrolled bridge | Three-phase uncontrolled bridge | Three-phase uncontrolled bridge |
| Mounting Style | Chassis screw mount (M6 bolts) | Chassis screw mount (M6 bolts) - same | Chassis screw mount (M6 bolts) - same | Chassis screw mount - different footprint | Chassis screw mount (M6 bolts) - same | Chassis screw mount - verify drawing |
| Lifecycle Status | Active | Active | Active | Active (mature) | Active | Active |
주요 차별점
- True SEMIPONT 3 mechanical footprint with M5 power terminals (vs SKB 80/16)
- 1600 V VRRM covers 600 V AC industrial bus with 2.5x safety margin (vs SKD 82/12)
- Higher IFSM (750 A) absorbs capacitor-bank inrush at soft-start (vs VUO82-16NO7 (IXYS))
설계 노트
Estimated - at 80 A DC output the SKD82/16 dissipates approximately 80 A * 1.55 V = 124 W of conduction loss. Per the datasheet, Rth(s-a) = 1.8 K/W when mounted on a 250x250x1 mm painted metal sheet, which yields a junction-to-ambient temperature rise of 124 * 1.8 = 223 C above ambient - far above the 150 C junction limit. In practice the module MUST be bolted to a real extruded or cast heatsink with thermal resistance below approximately (150 C - 40 C) / 124 W = 0.9 K/W to keep Tj below 130 C at 40 C ambient. Apply a thin layer of thermal compound (e.g. Dow Corning TC-5026 or similar) between module baseplate and heatsink, and torque the M6 mounting bolts to 5 Nm in a star pattern.
The SKD82/16 is rated for 80 A DC output, but this rating assumes the module is heatsunk and operating below 100 C case temperature. At room-temperature bench testing without a heatsink, the module will thermally limit within seconds and may be destroyed. Always attach the module to its heatsink before applying AC mains, and verify case temperature with a thermocouple during initial prototype bring-up. Also note that the SKD82/16's M5 power terminals accept ring or fork lugs - do NOT use bare wire under the terminal screw, as contact resistance will cause localized overheating and terminal screw loosening over thermal cycles.
Mount the SKD82/16 with its fins oriented vertically in still air to promote natural convection on the heatsink, and keep at least 50 mm clearance above and below the module to avoid airflow obstruction. AC input cables should be routed away from the DC output cables to minimize line-frequency magnetic coupling into downstream control circuits; twisted or bundled AC and DC cabling reduces EMI. For VFD applications, place a 0.1-1 uF X2 class capacitor across each AC input terminal to chassis ground to suppress common-mode EMI generated by the diode reverse-recommutation edges.
Per Semikron application notes for SEMIPONT 3 bridges, install fast-acting semiconductor fuses (e.g. Ferraz Shawmut A50QS or Bussmann FWH) on each AC input phase, sized at approximately 1.5x the bridge's average current rating. The fuses clear downstream short circuits before the silicon junction exceeds its I^2t rating. For VFD and SMPS front ends, also add an RC snubber (e.g. 0.1 uF + 100 ohm per phase) across each diode pair to limit dv/dt-induced reverse-recovery stress and reduce conducted EMI on the AC line.
규정 준수 정보
RoHS compliant per Semikron datasheet. SVHC (REACH Article 33) not compliant per datasheets.com listing - may require REACH notification for EU customers. Not AEC-Q100 qualified (not a semiconductor for automotive use).
