Specifications
| Type | Description |
|---|---|
| Part Number | MUR3040 |
| Manufacturer | ON Semiconductor |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | TO-218, Case 340E-02, 2-lead; body dimensions include B=14.70-15.20 mm, C=4.70-4.90 mm, S=17.80-18.20 mm |
| Peak Repetitive Reverse Voltage | 400 V max, VRRM |
| Working Peak Reverse Voltage | 400 V max, VRWM |
| DC Blocking Voltage | 400 V max, VR |
| Average Rectified Forward Current | 30 A max, IF(AV), TC=70°C |
| Peak Repetitive Forward Current | 30 A max, IFRM, rated VR, square wave, 20 kHz, TC=150°C |
| Non-Repetitive Peak Surge Current | 300 A max, IFSM, surge applied at rated load conditions, halfwave, single phase, 60 Hz |
| Operating Junction Temperature Range | -65 to +175°C, TJ |
| Storage Temperature Range | -65 to +175°C, Tstg |
| Thermal Resistance Junction-to-Case | 1.0°C/W max, RθJC |
| Instantaneous Forward Voltage | 1.4 V, IF=30 A, TC=100°C |
| Instantaneous Forward Voltage | 1.5 V, IF=30 A, TC=25°C |
| Instantaneous Reverse Current | 6.0 mA, rated dc voltage, TC=100°C |
| Instantaneous Reverse Current | 35 µA, rated dc voltage, TC=25°C |
| Reverse Recovery Time | 100 ns, IF=1.0 A, dI/dt=15 A/µs |
| Pulse Test Width | 300 µs, electrical characteristics note 1 |
| Pulse Test Duty Cycle | ≤2.0%, electrical characteristics note 1 |
| Recovery Time Feature | 100 ns ultrafast recovery time |
| Voltage Capability | 400 V high voltage capability |
| Current Rating | 30 A device headline rating |
| Soldering Lead Temperature | 260°C max for 10 s, lead temperature for soldering purposes |
| Device Marking | U3040, marking diagram/device code |
| Package | TO-218, ordering information for MUR3040 |
| Shipping Quantity | 30 units/rail, ordering information for MUR3040 |
| Approximate Weight | 4.3 g, mechanical characteristics |
| Pin 1 Function | Cathode, TO-218 Case 340E-02, Style 1 |
| Pin 3 Function | Anode, TO-218 Case 340E-02, Style 1 |
| Pin 4 Function | Cathode, TO-218 Case 340E-02, Style 1 |
| Datasheet Status | request_only |
Product Overview
The MUR3040 is an ON Semiconductor ultrafast power rectifier for Power_Management designs requiring 400 V voltage capability and 30 A current rating. Its reverse-voltage ratings are specified as 400 V maximum for VRRM, VRWM, and DC blocking voltage VR.
Forward-current capability includes 30 A maximum average rectified forward current at TC=70°C and 30 A maximum peak repetitive forward current under rated VR, square-wave, 20 kHz operation at TC=150°C. Surge capability is specified at 300 A maximum for a half-wave, single-phase, 60 Hz non-repetitive surge applied at rated load conditions.
The device uses a TO-218, Case 340E-02, 2-lead package. Mechanical and assembly details include approximately 4.3 g weight, 260°C maximum lead soldering temperature for 10 seconds, and device marking U3040. Pin functions are cathode on Pin 1, anode on Pin 3, and cathode on Pin 4.
Key Features
- 400 V maximum VRRM peak repetitive reverse voltage
- 400 V maximum VRWM working peak reverse voltage
- 400 V maximum DC blocking voltage rating
- 30 A average rectified forward current at TC=70°C
- 30 A peak repetitive forward current at 20 kHz
- 300 A non-repetitive peak surge current rating
- 100 ns reverse recovery time at specified test conditions
- 1.0°C/W maximum junction-to-case thermal resistance
- -65 to +175°C junction temperature operating range
- TO-218 package with U3040 device marking
Typical Applications
- Power rectification stages
- DC blocking circuits
- High-voltage rectifier assemblies
- 30 A current paths
- Ultrafast recovery power circuits
- TO-218 mounted power designs
- High-surge rectifier positions
Procurement Notes
When requesting a quote for MUR3040, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What type of component is the MUR3040?
The MUR3040 is an ON Semiconductor ultrafast power rectifier in the Power_Management category. It has a 400 V voltage capability and a 30 A device headline current rating.
What package is used for the MUR3040?
The MUR3040 is listed in a TO-218 package, Case 340E-02. The extracted package facts specify a 2-lead body with dimensions including B=14.70-15.20 mm, C=4.70-4.90 mm, and S=17.80-18.20 mm.
What are the main voltage ratings for MUR3040?
The datasheet facts specify 400 V maximum for peak repetitive reverse voltage VRRM, 400 V maximum for working peak reverse voltage VRWM, and 400 V maximum for DC blocking voltage VR.
What reverse recovery time is specified for MUR3040?
The reverse recovery time is specified as 100 ns under the condition IF=1.0 A and dI/dt=15 A/µs. The feature list also identifies 100 ns as the ultrafast recovery time.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 26, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.