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Diodes Incorporated MRS30M
- Part No.:
- MRS30M
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Flat Leads
- Datasheet:
-
MRS30M.pdf
- Description:
- BRIDGE RECT 1PHASE 1KV 3A MSBL
- Quantity:
- Payment:
- Shipping:
Inventory:2,725
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Product details
Overview
MRS30M from Diodes Incorporated is a 3.0A surface-mount fast recovery bridge rectifier with 1000V peak repetitive reverse voltage, 250ns reverse recovery time, and 1.3V forward voltage at 3A/25°C. It serves as a compact, EMI-optimized AC–DC full-wave rectification device in switch-mode power supplies, LED drivers, and battery chargers.
For engineers reviewing the MRS30M datasheet, MRS30M pinout, MRS30M application, or MRS30M equivalent, key selection criteria include its MSBL package thermal performance (RθJC = 2°C/W), UL recognition (E364304), RoHS- and halogen-free compliance, and suitability for high-reliability consumer and telecom power stages.
Technical Context
The MRS30M integrates four fast recovery diodes in a single-phase bridge configuration with glass-passivated junctions. Its 250ns tRR and low 45pF junction capacitance support high-frequency switching up to 100kHz in SMPS front-end rectification.
Rated for 3.0A average output current at TC = +130°C and 100A non-repetitive surge capability, it delivers robust operation under transient overloads while maintaining stable thermal resistance (RθJC = 2°C/W) when mounted on an aluminum heatsink plate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse voltage in AC line applications without breakdown |
| IO (at TC = +130°C) | 3.0 A - Sustained DC output current rating under thermally constrained PCB mounting |
| tRR | 250 ns - Enables efficient high-frequency rectification with minimal switching loss |
| VF (at IF = 3A, TA = +25°C) | 1.3 V - Low conduction loss contributing to >85% typical system efficiency in 12–24V adapters |
| IR (at VR = 1000V, TA = +25°C) | 5 μA - Minimal leakage ensures stable blocking in high-impedance standby circuits |
| RθJC | 2 °C/W - Enables direct thermal coupling to heatsink for reliable 3A continuous operation |
Pinout & Package
Package: MSBL - Molded plastic, ultra-thin surface-mount bridge rectifier package (7.30 × 6.60 × 1.40 mm), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | AC Input Terminal (Anode of D1 / Cathode of D2) | One of two AC input nodes; marked with polarity symbol on top surface |
| Pin 2 | DC Negative Output (Cathode of D1 / Cathode of D4) | Common cathode node delivering negative DC rail; connects to ground reference |
| Pin 3 | AC Input Terminal (Cathode of D3 / Anode of D4) | Second AC input node; symmetrical with Pin 1 for balanced bridge operation |
| Pin 4 | DC Positive Output (Anode of D2 / Anode of D3) | Common anode node delivering positive DC rail; feeds bulk capacitor input stage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enhances long-term reliability and humidity resistance in unsealed consumer enclosures |
| EMI-optimized filter rectifier design | Reduces high-frequency noise generation during commutation, easing EMC filter sizing |
| Compact MSBL thin-profile package | Enables <1.5mm board height in space-constrained adapters and LED drivers |
| UL Recognized Component (E364304) | Validates safety compliance for end-equipment certification without additional testing |
| Halogen- and antimony-free "Green" construction | Meets IEC 61249-2-21 and JEDEC J-STD-609A Class 1 requirements for eco-design |
Applications
| SMPS Front-End Rectification | LED Driver Input Stage |
|---|---|
Use Scenario: Full-wave rectification of 85–265V AC mains in offline flyback converters. IC Role / Device Role / Timing Role: Bridge rectifier providing unidirectional DC bus for PWM controller IC input. Use Value: 1000V VRRM and 100A IFSM ensure robustness against line surges and cold-start inrush. | Use Scenario: AC input conditioning for constant-current LED drivers in commercial lighting fixtures. IC Role / Device Role / Timing Role: Primary-side rectification element feeding bulk capacitor and PFC stage. Use Value: Low 250ns tRR minimizes switching noise coupled into sensitive current-sense paths. |
| Battery Charger Input Section | Office Equipment Power Supply |
Use Scenario: Universal-input rectification in 12–19V wall adapters for portable electronics. IC Role / Device Role / Timing Role: High-efficiency bridge converting AC to DC before secondary-side regulation. Use Value: 1.3V VF at 3A reduces conduction loss, enabling compact thermal design without heatsink. | Use Scenario: Line-powered internal PSU in printers, scanners, and multifunction devices. IC Role / Device Role / Timing Role: Main AC–DC conversion block powering logic, motor, and interface rails. Use Value: UL E364304 recognition simplifies end-product safety certification process. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K (ON Semiconductor) | Same 1000V VRRM, 4A IO, but larger GBU package (10.5 × 14.2 mm); tRR = 500ns | Higher current rating but slower recovery; less suitable for >50kHz designs | Select when higher surge margin is prioritized over board area and switching speed |
| MB10F (Vishay) | 1000V VRRM, 1.0A IO, smaller MB-10 package (12.7 × 12.7 mm); tRR = 250ns | Lower current rating limits use to sub-15W adapters; same recovery performance | Select only for low-power, cost-sensitive applications where 3A headroom is unnecessary |
Compared with GBU4K and MB10F, the MRS30M uniquely balances 3A current handling, 250ns recovery, and ultra-compact MSBL footprint-making it optimal for space-constrained, high-frequency, mid-power (<65W) AC–DC conversion where thermal resistance and EMI behavior are critical.
Availability
MRS30M is available at Aetrix Electronics and suitable for switch-mode power supplies, LED lighting drivers, and battery charger designs requiring stable component supply, consistent lead-free plating, and UL-recognized safety compliance.
Supply support for MRS30M 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, high-reliability components for power management, signal integrity, and protection.
The MRS30M belongs to Diodes' surface-mount bridge rectifier product line, engineered specifically for compact, high-efficiency AC–DC conversion in consumer, industrial, and telecom power systems.
FAQ
What is the maximum operating temperature for the MRS30M?
The MRS30M supports junction temperatures from –55°C to +150°C. Its 3.0A current rating is specified at TC = +130°C, meaning the case temperature must be maintained at or below this value under continuous load using appropriate PCB copper area or heatsinking per the datasheet's thermal resistance values (RθJC = 2°C/W).
Is the MRS30M suitable for automotive applications?
The MRS30M is not AEC-Q200 qualified and is not intended for automotive use unless explicitly validated by the customer. Diodes offers separate AEC-Q200-compliant bridge rectifiers (e.g., ABS20Q, GBU6J-Q) with PPAP documentation and IATF 16949 manufacturing control for automotive-grade deployment.
How does the MSBL package compare thermally to standard bridge packages like GBU or KBU?
The MSBL package delivers RθJC = 2°C/W - significantly lower than typical GBU (≈4–5°C/W) or KBU (≈6–8°C/W) packages - due to its optimized leadframe-to-case thermal path and direct metal pad contact. This allows higher current density in thinner form factors without external heatsinks when properly mounted on ≥120 mm² copper area.
Does the MRS30M require derating for capacitive loads?
Yes. Per the datasheet, the average output current must be derated by 20% when used with capacitive-input filters (common in SMPS). For example, the 3.0A rating becomes 2.4A under full-capacitor-input conditions to prevent excessive peak diode currents and ensure reliability over lifetime.
MRS30M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1 kV
- Current - Average Rectified (Io):
- 3 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MSBL
MRS30M FAQ
1.How can I place an order for MRS30M through Aetrix?
Please submit a Request for Quotation (RFQ) for MRS30M 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 MRS30M reliable?
The price and inventory of MRS30M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MRS30M is usually 5 days.
3.What payment methods are accepted for MRS30M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MRS30M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MRS30M?
MRS30M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MRS30M 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 MRS30M?
For technical support, including MRS30M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MRS30M requirements.
6.How does Aetrix verify that MRS30M is sourced from the original manufacturer or authorized distributors?
All MRS30M 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 MRS30M meets industry standards.
7.What is the process for return or replacement of MRS30M?
All MRS30M units undergo pre-shipment inspection (PSI). If there is an issue with MRS30M, 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 MRS30M part is unused and in its original packaging.
Return procedure for MRS30M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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