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Vishay General Semiconductor - Diodes Division MBR1045HE3/45
- Part No.:
- MBR1045HE3/45
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
MBR1045HE3/45.pdf
- Description:
- DIODE SCHOTTKY 45V 10A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,105
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Product details
Overview
MBR1045HE3/45 from Vishay General Semiconductor is a 45 V, 10 A Schottky barrier rectifier in TO-220AC package, featuring 0.57 V forward voltage at 10 A and 125 °C junction temperature, 150 A peak surge capability, and operation up to 150 °C junction temperature-designed for low-voltage, high-frequency rectification in DC/DC converters.
For engineers reviewing the MBR1045HE3/45 datasheet, MBR1045HE3/45 pinout, MBR1045HE3/45 application, or MBR1045HE3/45 equivalent, key selection criteria include forward voltage drop at rated current and temperature, thermal resistance (2.0 °C/W), surge rating, RoHS-compliant matte tin plating, and compatibility with 245 °C reflow profiles per J-STD-020.
Technical Context
This device operates as a single-diode, unidirectional power rectifier optimized for switching-mode power supplies. Its low VF minimizes conduction loss, while high dV/dt rating (10,000 V/μs) supports fast-switching topologies. The TO-220AC package enables direct heatsink mounting with ≤10 in-lbs torque.
It delivers stable performance across -65 °C to +150 °C operating junction range and exhibits 0.10 mA reverse leakage at 25 °C and rated VR. Thermal resistance of 2.0 °C/W from junction-to-case ensures effective heat dissipation under continuous 10 A average load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - maximum repetitive reverse blocking voltage; defines safe DC/peak AC voltage limit before breakdown |
| IF(AV) | 10 A - average forward current at TC = 25 °C; derates linearly above 25 °C case temperature |
| VF @ 10 A, 125 °C | 0.57 V - low conduction loss enabling >90% efficiency in 5–12 V output DC/DC stages |
| IFSM | 150 A - non-repetitive surge rating for 8.3 ms half-sine; withstands startup/inrush transients |
| RθJC | 2.0 °C/W - thermal resistance from junction to case; enables ~20 W power dissipation with 40 °C ΔT to heatsink |
| TJ max. | +150 °C - maximum junction temperature; supports operation in sealed or high-ambient industrial environments |
| IR @ VR, 25 °C | 0.10 mA - low reverse leakage preserves efficiency in battery-backed or standby circuits |
Pinout & Package
Package: TO-220AC - through-hole, single-ended heatsink-mountable case with isolated tab (pin 2), matte tin-plated leads, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Input terminal for forward current flow; connects to switching node or transformer secondary |
| Pin 2 | Cathode / Heatsink Tab | Output terminal and electrically isolated metal tab; must be mounted to heatsink with insulating washer if referenced to ground |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.57 V at 10 A and 125 °C reduces conduction loss by ≥30% vs. standard PN rectifiers |
| High surge capability | 150 A IFSM withstands repeated 8.3 ms inrush events without degradation |
| RoHS-compliant & halogen-free | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and halogen-free material classification |
| MSL Level 1 rating | Rated for unlimited floor life and 245 °C peak reflow per J-STD-020-no bake required before assembly |
| High-frequency operation | Fast recovery with negligible reverse recovery charge enables use in >100 kHz SMPS designs |
Applications
| Switching Mode Power Supply Output Rectification | DC/DC Converter Freewheeling Diode |
|---|---|
Use Scenario: Secondary-side rectification in 5–12 V, 10 A output buck or flyback converters. IC Role / Device Role / Timing Role: Unidirectional power path clamp; conducts during switch off-time to maintain inductor current continuity. Use Value: 0.57 V VF at full load and elevated temperature maintains >92% conversion efficiency and limits thermal rise on PCB. | Use Scenario: Freewheeling path in synchronous or non-synchronous buck regulators powering FPGA or ASIC cores. IC Role / Device Role / Timing Role: Provides low-loss return path for inductor current when high-side MOSFET is off. Use Value: 150 A IFSM handles transient overloads without failure; 2.0 °C/W RθJC allows direct heatsinking to chassis. |
| Polarity Protection Circuit | Automotive Body Control Module Input Stage |
Use Scenario: Reverse-voltage protection at main DC input of industrial PLC power module. IC Role / Device Role / Timing Role: Series-connected anode-in configuration blocks reverse polarity while passing forward current. Use Value: 45 V VRRM provides 2× margin over 24 V nominal rail; 0.10 mA IR at 25 °C avoids standby drain. | Use Scenario: Input rectification and protection in 12 V automotive BCMs exposed to load-dump transients. IC Role / Device Role / Timing Role: Primary front-end rectifier handling alternator output and battery backup paths. Use Value: 150 °C TJ max and robust 150 A surge rating meet AEC-Q101 stress requirements when paired with external clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1045CG | Same 45 V / 10 A rating; VF = 0.55 V @ 10 A, 125 °C; TO-220AC package; no MSL Level 1 claim | Lower VF improves efficiency marginally but lacks documented J-STD-020 reflow qualification | Select when absolute minimum conduction loss is prioritized and reflow profile control is assured |
| ON Semi MBR1045CT | 45 V / 10 A dual common-cathode configuration; VF = 0.62 V @ 10 A, 125 °C; TO-220AB package with shared cathode | Not single-diode; requires layout change for single-path use; intended for dual-output or center-tapped designs | Choose only if dual-diode topology matches system architecture; not a drop-in replacement |
Compared with STPS1045CG and MBR1045CT, the MBR1045HE3/45 offers verified MSL Level 1 reflow compatibility and consistent 0.57 V VF at high temperature-critical for production reliability in high-volume industrial power supplies where process control and thermal stability are non-negotiable.
Availability
MBR1045HE3/45 is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and polarity protection circuits requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.
Supply support for MBR1045HE3/45 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on power efficiency and reliability.
The MBR10xx series targets high-efficiency, high-current rectification in compact power systems-designed specifically for cost-sensitive yet thermally demanding applications such as telecom bricks, server VRMs, and automotive body electronics.
FAQ
What is the maximum junction temperature rating for MBR1045HE3/45?
The MBR1045HE3/45 has a maximum junction temperature (TJ max.) of +150 °C, validated per Vishay's thermal characterization and supported by its 2.0 °C/W junction-to-case thermal resistance. This rating allows sustained operation in enclosed industrial enclosures or under high ambient conditions when properly heatsinked. Derating curves in the official datasheet confirm usable current capacity down to 0 A at 150 °C case temperature.
Is MBR1045HE3/45 RoHS-compliant and halogen-free?
Yes, the "E3" suffix in MBR1045HE3/45 explicitly denotes RoHS-compliant construction per EU Directive 2011/65/EU, and the device is also halogen-free per Vishay's material categorization standard. Lead finishes are matte tin plated and qualified to J-STD-002 and JESD 22-B102 solderability standards, with whisker resistance meeting JESD 201 Class 1A.
Does MBR1045HE3/45 support lead-free reflow assembly?
Yes, MBR1045HE3/45 meets MSL Level 1 per J-STD-020 and is rated for peak reflow temperatures up to 245 °C, making it compatible with standard lead-free soldering processes without preconditioning or baking. Its TO-220AC package is qualified for both wave and reflow, with maximum solder bath temperature of 275 °C for 10 seconds per JESD 22-B106.
What is the forward voltage drop of MBR1045HE3/45 at full rated current and elevated temperature?
The MBR1045HE3/45 specifies a maximum instantaneous forward voltage (VF) of 0.57 V at IF = 10 A and TJ = 125 °C. This value is measured under pulsed conditions and reflects real-world conduction loss in thermally stressed DC/DC converter outputs. At 25 °C, VF is 0.80 V under the same test condition.
Can MBR1045HE3/45 be used in automotive applications?
The base MBR1045HE3/45 is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the functionally identical MBR1045HM3/45 variant (D2PAK) and MBRB1045HM3/I (D2PAK tape-and-reel) with full AEC-Q101 qualification. For under-hood or BCM use, those HM3-suffix variants must be selected-MBR1045HE3/45 itself is intended for industrial and computing power supplies.
MBR1045HE3/45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 150°C
MBR1045HE3/45 FAQ
1.How can I place an order for MBR1045HE3/45 through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR1045HE3/45 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MBR1045HE3/45 reliable?
The price and inventory of MBR1045HE3/45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1045HE3/45 is usually 5 days.
3.What payment methods are accepted for MBR1045HE3/45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1045HE3/45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR1045HE3/45?
MBR1045HE3/45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR1045HE3/45 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MBR1045HE3/45?
For technical support, including MBR1045HE3/45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1045HE3/45 requirements.
6.How does Aetrix verify that MBR1045HE3/45 is sourced from the original manufacturer or authorized distributors?
All MBR1045HE3/45 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MBR1045HE3/45 meets industry standards.
7.What is the process for return or replacement of MBR1045HE3/45?
All MBR1045HE3/45 units undergo pre-shipment inspection (PSI). If there is an issue with MBR1045HE3/45, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MBR1045HE3/45 part is unused and in its original packaging.
Return procedure for MBR1045HE3/45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR1045HE3/45 Tags
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