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VUO122-12NO7 Rectifier Module Datasheet & Specs

Q: What is the RMS current rating of the VUO122-12NO7?

It is rated at 100 A RMS per terminal.

Q: What is the forward voltage drop of the VUO122-12NO7?

The typical forward voltage is around 1.13 V at 125 A, Tj = 25 °C.

Q: What package is used for the VUO122-12NO7?

It comes in the ECO-PAC2 industry-standard outline with DCB ceramic base.

Q: What is the maximum surge current of the VUO122-12NO7?

The module can handle up to 1000 A for 10 ms at Tj = 45 °C.

Q: What isolation voltage does the VUO122-12NO7 provide?

The module is specified for 3000 V isolation for 1 minute.

September 23, 2025

VUO122-12NO7

VUO122-12NO7 Overview

The VUO122-12NO7 is a three-phase rectifier bridge module manufactured in the ECO-PAC2 package. Designed with planar passivated chips and mounted on a DCB ceramic baseplate, the VUO122-12NO7 provides robust thermal performance, low forward voltage drop, and very low leakage current. With a repetitive reverse blocking voltage of 1200 V and an RMS current rating of 100 A, the VUO122-12NO7 is a reliable solution for DC power supplies, motor field supplies, and PWM inverter input stages.

Engineers value the VUO122-12NO7 for its improved temperature cycling capability, reduced weight, and industry-standard outline that simplifies system integration.

VUO122-12NO7 Key Features

Forward current vs. voltage drop characteristics of VUO122-12NO7 rectifier diode.

Repetitive Reverse Blocking Voltage (V_RRM): 1200 V
RMS Current (I_RMS): 100 A
Average Forward Current (I_FAV): 125 A per terminal at T_C = 85 °C
Surge Forward Current (I_FSM): up to 1000 A at 10 ms (50 Hz sine)
Forward Voltage Drop (V_F): typically 1.13 V at I_F = 125 A, T_j = 25 °C
Very low leakage current at rated blocking voltage
Planar passivated chips for improved reliability
Isolation Voltage: 3000 V (50/60 Hz, RMS for 1 second)
Baseplate: DCB ceramic for superior heat dissipation
Mounting Torque: 1.4 Nm with M4 screws
Operating Junction Temperature Range: –40 °C to +150 °C

Applications of VUO122-12NO7

The VUO122-12NO7 is suitable for a wide range of industrial applications:

Three-phase diode rectification
Input rectifier for PWM inverters
Power supplies for DC equipment
Battery DC power supply systems
Field supply units for DC motors

Technical Specifications of VUO122-12NO7

Parameter	Value
V_RRM (Repetitive Reverse Blocking Voltage)	1200 V
I_RMS (RMS Current per terminal)	100 A
I_FAV (Average Forward Current)	125 A
I_FSM (Surge Forward Current, 10 ms, 50 Hz)	1000 A
V_F (Forward Voltage Drop)	1.13–1.49 V
Leakage Current (I_R)	< 2 mA at V_RRM, T_j = 25 °C
R_thJC (Thermal Resistance, Junction–Case)	0.6 K/W
R_thCH (Thermal Resistance, Case–Heatsink)	0.3 K/W
Isolation Voltage	3000 V~ (1 min)
Weight	~24 g
Package	ECO-PAC2

Package and Dimensions of VUO122-12NO7

The VUO122-12NO7 comes in a low-profile ECO-PAC2 module outline. It has a height of 9 mm, is RoHS compliant, and includes soldering pins for PCB mounting. Dimensions:

Length ~51 mm
Width ~34.3 mm
Height ~20.3 mm
Terminal hole diameter Ø4.3 mm (for M4 screws)

Advantages and Disadvantages of VUO122-12NO7

Maximum forward current vs. case temperature curve of VUO122-12NO7 rectifier module.

Advantages	Disadvantages / Considerations
High current capability (125 A average) with compact ECO-PAC2 package	Requires efficient heatsinking for reliable continuous operation
Very low forward voltage drop reduces conduction losses	Surge current up to 1000 A is limited to short-time conditions
Low leakage current at rated blocking voltage	Forward voltage increases as junction temperature rises
Excellent thermal cycling performance due to DCB ceramic baseplate	Mechanical stress possible if mounting torque is not applied correctly
Isolation voltage of 3000 V ensures safe system integration	Operates best within junction temperature ≤ 150 °C, exceeding reduces lifespan

Issues and Solutions for VUO122-12NO7

Surge overload current vs. time curve of VUO122-12NO7 rectifier module.

Heat buildup under continuous load: Apply thermal grease and ensure correct mounting torque (1.4 Nm).
Overcurrent during startup: Limit inrush current with appropriate circuit design.
PCB mounting stress: Ensure correct soldering and screw torque to avoid mechanical stress on terminals.
Leakage at high temperature: Operate within recommended T_j ≤ 150 °C for reliable performance.

Equivalent Circuit of VUO122-12NO7

Equivalent circuit diagram of VUO122-12NO7 rectifier module showing six diodes in a three-phase bridge configuration.

The VUO122-12NO7 rectifier module integrates six diodes (D1–D6) connected in a standard three-phase bridge configuration. Terminals PS18, A1, L9, and K10 serve as AC inputs, while EG1 provides the DC output. This arrangement allows efficient three-phase AC to DC conversion, ensuring stable performance for power supplies, inverters, and motor drives. The circuit design minimizes forward losses and ensures robust operation under industrial load conditions.

Equivalent and Cross-Reference Models of VUO122-12NO7

The VUO122-12NO7 belongs to the ECO-PAC2 rectifier module family. Within this series, related models such as VUO160-12NO7 and VUO190-12NO7 share the same blocking voltage rating of 1200 V but differ in current handling capabilities. This makes them possible alternatives depending on the system’s current requirement.

Comparison Table

Parameter	VUO122-12NO7	VUO160-12NO7	VUO190-12NO7
V_RRM	1200 V	1200 V	1200 V
I_DAV（Rectified Avg.）	125 A	175 A	240 A
I_FSM（10 ms, 50 Hz）	1000 A	1800 A	2800 A
r_F（mΩ）	4.6	3.4	2.4
R_thJC（K/W）	0.6	0.5	0.4
R_thCH（K/W）	0.3	0.2	0.15

Conclusion

The VUO122-12NO7 is a robust three-phase rectifier bridge module with 1200 V blocking voltage and 125 A current capability. Its ECO-PAC2 package with a DCB ceramic base offers strong thermal performance, making it ideal for DC power supplies, inverters, and motor field supplies. With low conduction losses, high isolation voltage, and long-term reliability, the VUO122-12NO7 is a preferred choice for industrial rectification needs.