Diodes Incorporated MSB30TM
- Part No.:
- MSB30TM
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Flat Leads
- Datasheet:
-
MSB30TM.pdf
- Description:
- BRIDGE RECT 1PHASE 1KV 3A MSBL
- Quantity:
- Payment:

- Shipping:

Inventory:7,108
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Product details
Overview
MSB30TM from Diodes Incorporated is a surface-mount fast recovery bridge rectifier rated for 1000 V repetitive peak reverse voltage, 3 A average forward current, and 1.3 V maximum forward voltage at 3 A, used in AC–DC full-wave rectification for SMPS, LED lighting drivers, and battery chargers.
For engineers reviewing the MSB30TM datasheet, MSB30TM pinout, MSB30TM application, or MSB30TM equivalent, key selection criteria include its 500 ns reverse recovery time, 100 A non-repetitive surge rating, compact MSBL package with 0.216 g mass, and RoHS-compliant matte tin-plated terminals suitable for SMT reflow.
Technical Context
This monolithic silicon bridge rectifier integrates four fast recovery diodes in a single MSBL package, enabling full-wave rectification without external interconnects. Its glass-passivated die construction ensures stable leakage performance up to 125°C (500 µA max) and supports operation from –55°C to +150°C junction temperature.
The device delivers low thermal resistance: 2°C/W junction-to-case and 25°C/W junction-to-ambient (on specified aluminum plate), supporting high-power-density designs where heatsinking is constrained. Its 45 pF typical junction capacitance at 1 MHz/4 V aids EMI control in switching power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak AC line transients in universal-input SMPS and industrial adapters. |
| IF(AV) | 3 A - Supports continuous output power up to ~36 W in 12 V DC systems with proper heatsinking. |
| VF Max | 1.3 V @ 3 A - Limits conduction loss to ≤3.9 W per device, critical for thermal management in enclosed LED drivers. |
| trr | 500 ns - Reduces switching losses and EMI generation compared to standard recovery bridges in 50–100 kHz converters. |
| IR Max | 5 µA @ 1000 V, 25°C - Ensures minimal standby power loss in always-on battery charger input stages. |
| IFS M | 100 A @ 8.3 ms - Survives cold-start surges in offline AC inputs without fuse coordination issues. |
| RθJC | 2 °C/W - Enables direct mounting to small metal heatsinks for thermally constrained consumer power supplies. |
Pinout & Package
Package: MSBL - Surface-mount, compact thin-profile plastic package (7.30 mm × 6.60 mm × 1.40 mm), UL 94V-0 rated, with matte tin-plated leads and molded polarity symbol.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One of two AC input pins; connects to live/neutral leg of transformer secondary or AC line. |
| AC2 | Input AC terminal 2 | Second AC input pin; completes full-wave bridge input path with AC1. |
| + (Anode) | Positive DC output | Rectified positive rail output; ties to bulk capacitor positive in SMPS front-end. |
| – (Cathode) | Negative DC output | Rectified negative rail output; serves as system ground reference in isolated supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enables stable IR performance over temperature and humidity, eliminating need for conformal coating in humid environments. |
| Compact MSBL footprint | Reduces PCB area by >40% vs. traditional DIP-4 bridge packages, enabling ultra-thin adapter designs. |
| Lead-free & halogen-free | Meets RoHS 3 and JEDEC J-STD-020 reflow profiles without solderability compromise or voiding risk. |
| 150°C max junction temp | Supports operation in sealed LED luminaires and enclosed wall-wart adapters without derating at ambient ≤85°C. |
Applications
| LED Lighting Driver | USB-C PD Adapter |
|---|---|
Use Scenario: Input rectification stage in constant-current LED driver for commercial downlights. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 100–277 V AC mains to pulsating DC before PFC stage. Use Value: 500 ns trr minimizes high-frequency ringing during zero-crossing, reducing EMI filter component count. | Use Scenario: Primary-side rectification in 65 W GaN-based USB-C PD wall adapter. IC Role / Device Role / Timing Role: High-voltage AC input bridge feeding active clamp flyback controller. Use Value: 1000 V VRRM withstands 277 V AC line surges with 2× safety margin; 2°C/W RθJC enables direct heatsink attachment. |
| Smart Home Appliance PSU | Industrial PoE Midspan |
Use Scenario: Standby power supply in Wi-Fi-enabled HVAC controller with always-on microcontroller. IC Role / Device Role / Timing Role: Low-leakage bridge rectifier feeding auxiliary 5 V SMPS for real-time clock and communication ICs. Use Value: 5 µA IR max at 25°C limits no-load input power to <30 mW, meeting Energy Star Level VI requirements. | Use Scenario: AC input rectification in IEEE 802.3bt Type 4 PoE midspan injector (up to 90 W per port). IC Role / Device Role / Timing Role: Robust bridge handling 240 V AC input with repeated lightning-induced surges. Use Value: 100 A IFSM rating ensures survival of 6 kV/10 A surge events per IEC 61000-4-5 without degradation. |
Availability
MSB30TM is available at Aetrix Electronics and suitable for LED lighting drivers, USB-C PD adapters, and smart home appliance power supplies requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.
Supply support for MSB30TM 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, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The MSB30TM belongs to Diodes' MSBL-series fast recovery bridge rectifiers, engineered specifically for space-constrained, high-efficiency AC–DC conversion in energy-sensitive applications such as LED lighting and compact adapters.
FAQ
What is the recommended PCB pad layout for MSB30TM?
The MSBL package requires a symmetric land pattern matching its 5.10 mm × 1.30 mm body with 0.8 mm diameter Pin #1 indicator. Recommended pad dimensions are 1.20 mm × 1.20 mm for each terminal, with 0.30 mm solder mask clearance and thermal relief for the cathode and anode pads to manage heat during reflow.
Can MSB30TM replace GBU6K in existing designs?
MSB30TM is not a drop-in replacement for GBU6K due to differing package (MSBL vs. GBU-4), pinout (4-terminal bridge vs. 4-pin inline), and thermal profile (RθJC = 2°C/W vs. ~3.5°C/W). Layout redesign and thermal validation are required; however, its 1000 V/3 A rating and 500 ns trr make it functionally suitable for similar SMPS applications.
Does MSB30TM meet AEC-Q101 for automotive use?
No - MSB30TM is not qualified to AEC-Q101. Diodes offers the automotive-grade MSB30TMA variant (with PPAP documentation and IATF 16949 manufacturing) for automotive applications; standard MSB30TM is intended for industrial, consumer, and commercial power supplies only.
How does the 45 pF junction capacitance affect EMI performance?
The 45 pF typical junction capacitance (measured at 1 MHz, 4 V reverse bias) contributes to high-frequency common-mode noise coupling. In 65–100 kHz SMPS, this value helps limit resonant peaks above 10 MHz, simplifying Y-cap selection and reducing conducted EMI filter complexity versus higher-C bridges (>100 pF).
MSB30TM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SMD, Flat Leads
- Packaging:
- Bulk
- 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
MSB30TM FAQ
1.How can I place an order for MSB30TM through Aetrix?
Please submit a Request for Quotation (RFQ) for MSB30TM 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 MSB30TM reliable?
The price and inventory of MSB30TM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSB30TM is usually 5 days.
3.What payment methods are accepted for MSB30TM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSB30TM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSB30TM?
MSB30TM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSB30TM 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 MSB30TM?
For technical support, including MSB30TM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSB30TM requirements.
6.How does Aetrix verify that MSB30TM is sourced from the original manufacturer or authorized distributors?
All MSB30TM 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 MSB30TM meets industry standards.
7.What is the process for return or replacement of MSB30TM?
All MSB30TM units undergo pre-shipment inspection (PSI). If there is an issue with MSB30TM, 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 MSB30TM part is unused and in its original packaging.
Return procedure for MSB30TM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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