QM300HA-H - 600V 300A NPN Power Transistor Module | Mitsubishi
N.º de pieza: QM300HA-H ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $120 | $120,00 |
| 10 | $108 | $1.080,00 |
| 100 | $96 | $9.600,00 |
| 500 | $87 | $43.500,00 |
| 1.000 | $78 | $78.000,00 |
QM300HA-H Descripción general
A power transistor module is a discrete semiconductor assembly that packages one or more silicon switching dies on an electrically isolated baseplate, allowing high-current power conversion circuits to share a grounded heatsink. Such modules form the switching stage of industrial power electronics - a hierarchy that runs from the transistor die, through the power module, to the complete motor drive or UPS inverter. The insulated construction is essential because it lets multiple modules mount on one chassis without individual isolation hardware.
Key features of the QM300HA-H include its 300A continuous collector current rating, 600V collector-emitter blocking voltage, and high DC current gain of 750, which reduces base-drive circuit requirements. The module is UL recognized under Yellow Card No. E80276 (N) and File No. E80271, providing independent safety certification for industrial equipment builders.
The device uses silicon NPN bipolar junction technology optimized for high-power switching duty. Compared with IGBT modules of similar ratings, bipolar transistor modules require continuous base current drive but exhibit very low saturation-related losses in hard-switched applications, which is why they remain in service in legacy inverter platforms. The insulated package provides creepage and clearance margins suited to 600V-class bus systems.
Typical applications documented by the manufacturer include AC motor controllers, uninterruptible power supplies (UPS), and DC motor control equipment, where high current capability and efficient thermal dissipation are non-negotiable requirements.
When designing with this module, verify base-drive provision matches the hFE of 750 across the operating temperature range, and ensure the heatsink keeps the junction within the datasheet limit at full 300A load.
This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas directas para QM300HA-H — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
QM300HA-HB
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
QM300HA-2H
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
QM300HA-24
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
QM300HH-H
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
QM200HH-H
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
QM400HA-H
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
QM300HA-H Valores máximos y características eléctricas
| Device Type | NPN Power Transistor Module |
| Collector-Emitter Voltage (VCEX) | 600 V |
| Corriente de colector (Ic) | 300 A |
| DC Current Gain (hFE) | 750 |
| Polarity | NPN, Silicon |
| Configuration | 1-Element |
| Package Type | Insulated Type Power Module |
| Application Class | High Power Switching Use |
| Isolation | Insulated baseplate |
| Safety Recognition | UL Recognized Yellow Card No. E80276 (N), File No. E80271 |
| Manufacturer | Mitsubishi Electric Semiconductor |
| Typical Applications | AC motor controllers, UPS, DC motor control |
| Tipo de montaje | Chassis-mount (screw terminals) |
Guía de configuración de pines de QM300HA-H insulated type power module
Configuración de pines para QM300HA-H (encapsulado insulated type power module). Este dispositivo de potencia presenta terminales de puerta, drenador y fuente. Para encapsulados no polarizados, consulte la hoja de datos del fabricante para conocer la orientación exacta del pin 1 y los detalles del footprint. Las aplicaciones habituales incluyen el diseño de fuentes de alimentación, el accionamiento de motores y la conmutación de cargas.
No hay datos detallados de patillaje disponibles para QM300HA-H.
Consulte la hoja de datos para ver la configuración completa de patillas.
Área de funcionamiento seguro
Aplicaciones típicas
QM300HA-H es adecuado para 6 aplicacións: AC Motor Controllers, Uninterruptible Power Supplies (UPS), DC Motor Control, Industrial Inverter Platforms (Sustaining Engineering), High-Current DC Switching and Power Conversion, Legacy Equipment Repair and Service.
AC Motor Controllers
The QM300HA-H is explicitly listed by Mitsubishi as an AC motor controller application device. Its 600V collector-emitter rating covers 400V-class three-phase industrial buses with blocking margin, and its 300A collector current handles the inrush and overload profiles of medium-frame induction motors. The hFE of 750 allows a moderate continuous base-drive supply, and the insulated baseplate permits all three phases to share one grounded heatsink, simplifying drive enclosure construction. In inverter bridges the module operates in hard-switched PWM duty; designers should verify switching-frequency-related losses with the datasheet curves and provide snubbers where di/dt limits demand them. Because this is a legacy bipolar module, it is most often specified today for sustaining existing drive platforms rather than new motor-drive designs.
Recomendado
Uninterruptible Power Supplies (UPS)
The manufacturer designates UPS as a primary application for the QM300HA-H. In online double-conversion UPS inverter stages, the module switches the DC link (typically 400V class) into the output transformer at line or PWM frequency. The 300A rating supports high-kVA single-module legs, and the UL recognition (Yellow Card No. E80276, File No. E80271) eases safety certification of the UPS assembly. The insulated package construction lets output legs mount on a common chassis without isolation pads, reducing thermal interface resistance. Designers should confirm SOA margins under the transformer's magnetizing and fault-current profiles and ensure base drive is removed fast enough to limit fault energy. For repairs of installed UPS fleets, the -HB revision is a direct family substitute.
Recomendado
DC Motor Control
DC motor controllers are a documented target application for the QM300HA-H. In chopper and thyristor-replacement topologies, the module modulates armature current at 600V-class bus voltages, with the 300A rating covering traction-class and industrial DC motors. The high DC current gain of 750 reduces the continuous base-drive current burden during long on-periods typical of DC chopper duty, which improves drive-stage efficiency. The insulated baseplate withstands the grounded-frame construction common in industrial DC drives. Key design considerations include flyback/snubber networks for the motor's inductive load, SOA verification during stalled-rotor current-limit events, and adequate heatsinking for low-frequency PWM where switching loss is modest but conduction loss dominates. Legacy installations commonly pair this module with regenerative braking contactor schemes.
Recomendado
Industrial Inverter Platforms (Sustaining Engineering)
Beyond the datasheet's named applications, the QM300HA-H is widely used in sustaining engineering for installed industrial inverter platforms - welding equipment, rail auxiliaries, and factory machinery built around 600V-class bipolar transistor module bridges. In these programs the module must match the original footprint, terminal layout, and hFE ranking so that base-drive boards and gate-drive transformers remain unchanged. The QM300HA-HB and QM300HA-2H from the same Mitsubishi family preserve that compatibility, while the QM400HA-H offers a current-upgrade path where derating history shows thermal stress. When repairing such equipment, verify date codes and gain grouping because bipolar modules were commonly supplied in matched-hFE sets for paralleled legs, and mismatched replacements can cause current hogging in shared-bridge designs.
Recomendado
High-Current DC Switching and Power Conversion
The QM300HA-H serves general high-power DC switching duty where a single 300A, 600V switch element is needed: DC-DC converters for electroplating and welding power supplies, controlled rectifier front-ends, and battery-backed DC buses. The single-element configuration simplifies paralleling designs when even more current is required, provided hFE-matched modules and emitter-ballast resistors are used. Its bipolar technology exhibits very low conduction-related losses relative to early IGBT alternatives at hard-switched line frequencies, which historically made it attractive for high-current low-frequency converters. Designers must provide adequate base-drive current (Ib scaled from IC/hFE with margin), protect against reverse-bias breakdown with appropriate snubbers, and validate SOA against repetitive pulse profiles using the manufacturer datasheet curves rather than estimates.
Recomendado
Legacy Equipment Repair and Service
A significant ongoing demand for the QM300HA-H comes from legacy equipment repair: industrial drives, UPS systems, and motor controllers installed since the 1990s that specify this exact module. In service contexts, authenticity and gain ranking matter more than datasheet novelty - replacement modules should be verified for the same hFE grouping as the failed part, especially in paralleled or bridge configurations. Suppliers such as SLW Electronics and Veswin Electronics stock the module for this repair channel with warranty support. When exact-suffix stock is exhausted, the QM300HA-HB (same family, later revision) is the first-choice substitute, followed by the QM300HA-2H. Technicians should confirm terminal identification from the official datasheet diagram rather than photographic guesswork before soldering or bolting replacements.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para QM300HA-H — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | QM300HA-HB | QM300HA-2H | QM300HH-H | QM200HH-H | QM400HA-H |
|---|---|---|---|---|---|---|
| Package | Insulated Power Module | Insulated Power Module - same | Insulated Power Module - same | Insulated Power Module - same | Insulated Power Module - same | Insulated Power Module - same |
| Brand | Mitsubishi Electric / Renesas | Mitsubishi Electric / Renesas | Mitsubishi Electric / Renesas | Mitsubishi Electric / Renesas | Mitsubishi Electric / Renesas | Mitsubishi Electric / Renesas |
| Collector-Emitter Voltage (VCEX) | 600 V | 600 V | 600 V | 600 V | 600 V | 600 V |
| Collector Current (IC) | 300 A | 300 A | 300 A | 300 A | 200 A | 400 A |
| Device Technology | NPN bipolar silicon transistor module | NPN bipolar silicon transistor module | NPN bipolar silicon transistor module | NPN bipolar silicon transistor module | NPN bipolar silicon transistor module | NPN bipolar silicon transistor module |
| Isolation | Insulated baseplate | Insulated baseplate | Insulated baseplate | Insulated baseplate | Insulated baseplate | Insulated baseplate |
Diferenciadores clave
- Highest documented hFE in its comparison set (frente a QM300HA-2H)
- UL-recognized insulated construction (frente a QM300HH-H)
- Lower conduction stage current headroom cost vs 400A option (frente a QM400HA-H)
Notas de diseño
Base-drive sizing is the dominant design task for this bipolar module: with hFE of 750, a 300A load nominally demands about 0.4A of continuous base current, but practical designs drive harder (forced beta of 5-10x reduction in effective gain) to minimize collector-emitter saturation voltage. Provide a negative base-emitter bias during off-time to sweep stored charge and reduce turn-off tail. Do not extrapolate IGBT gate-drive practice onto this module - it requires a current-sourcing drive stage with its own supply rail.
Estimated: at full 300A load with a bipolar module saturation condition, conduction losses are large enough that a forced-air-cooled heatsink is normally mandatory. The exact thermal resistance and power dissipation limits were not captured in the retrieved web data - obtain them from the official Mitsubishi datasheet PDF. Mount the insulated baseplate with the datasheet-specified screw torque and thermal grease; over- or under-torquing the baseplate screws is a common cause of premature module failure in service repairs.
Verify suffix identity before substitution: QM300HA-H, QM300HA-HB, QM300HA-2H, and QM300HH-H are frequently mixed up by resellers and all differ in gain ranking or generation. In paralleled or bridge configurations, mismatched hFE grouping causes current hogging and cascade failures. Also confirm terminal identification from the official datasheet diagram - reverse-wiring base and emitter destroys the module instantly. Obtain RoHS declaration for your specific date code if the end product is RoHS-scoped.
Información de cumplimiento
UL Recognized Yellow Card No. E80276 (N), File No. E80271 per manufacturer data. RoHS/REACH status not stated in retrieved data - request declaration from distributor or Renesas compliance desk for your specific date code.
