My Inquiry
My Account
Diodes Incorporated MSB12M-13
- Part No.:
- MSB12M-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Flat Leads
- Datasheet:
-
MSB12M-13.pdf
- Description:
- BRIDGE RECT 1P 1KV 1.2A 4-MSB
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSB12M-13 from Diodes Incorporated is a glass passivated surface-mount bridge rectifier rated for 1000 V peak repetitive reverse voltage, 1.2 A average output current, and 1.1 V forward voltage at 1.2 A, used in AC–DC full-wave rectification for LED lighting, battery chargers, and SMPS input stages.
For engineers reviewing the MSB12M-13 datasheet, MSB12M-13 pinout, MSB12M-13 application, or MSB12M-13 equivalent, key selection factors include its MSB package thermal resistance (RθJC = 10 °C/W), 45 A non-repetitive surge rating, RoHS-compliant matte tin finish, and compatibility with automated SMT assembly under J-STD-020 Level 1 moisture sensitivity.
Technical Context
This discrete bridge rectifier integrates four silicon diodes in a single-phase full-wave configuration with glass-passivated junctions to ensure stable reverse blocking and low leakage. Its internal schematic confirms standard bridge topology with two AC inputs (pins 2 & 4), DC+ (pin 1), and DC− (pin 3).
Designed for high-voltage, medium-current switching power supplies, it supports operation from −55 °C to +150 °C and requires derating to 80% current under capacitive load conditions per datasheet guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse voltage up to 1 kV without breakdown, suitable for 700 V RMS line inputs. |
| IO @ TC=120°C | 1.2 A - Continuous DC output current when case temperature is held at 120 °C, defining thermal design margin. |
| VF @ IF=1.2A | 1.1 V - Forward voltage drop at rated current, directly impacting conduction loss and thermal rise in rectifier stage. |
| IR @ VR=1000V, 25°C | 5 µA - Low leakage ensures minimal standby power loss and stable DC bus hold-up in offline converters. |
| IFSM (8.3 ms) | 45 A - Surge capability handles cold-start inrush into bulk capacitors without failure. |
| RθJC | 10 °C/W - Enables direct heatsinking via PCB copper pads; critical for thermal management in compact adapters. |
Pinout & Package
Package: MSB - Surface-mount molded plastic package (UL 94V-0), 4.5 mm × 5.0 mm footprint, 1.2 mm height, with matte tin–annealed copper leadframe terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | DC+ Output | Anode of upper-right diode and cathode of upper-left diode; connects to positive rail of downstream filter capacitor. |
| Pin 2 | AC Input 1 | Common cathode node of lower-left and upper-right diodes; one leg of AC input to bridge. |
| Pin 3 | DC− Output | Cathode of lower-left diode and anode of lower-right diode; connects to ground/reference return path. |
| Pin 4 | AC Input 2 | Common anode node of upper-left and lower-right diodes; second leg of AC input to bridge. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Prevents surface contamination and moisture ingress, ensuring long-term reliability in humid environments like LED drivers. |
| Compact thin-profile MSB package | Enables high-density layout in space-constrained adapters and wall-wart designs without compromising creepage/clearance. |
| Lead-free, RoHS 3 compliant finish | Meets global environmental regulations and supports Pb-free reflow profiles (J-STD-020 Level 1). |
| Low RθJC (10 °C/W) | Allows effective heat transfer to PCB copper, reducing need for external heatsinks in <15 W applications. |
Applications
| LED Lighting Power Supply | Battery Charger Input Stage |
|---|---|
Use Scenario: AC mains input rectification in constant-current LED drivers for commercial downlights. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 120/230 VAC to pulsating DC before bulk capacitor and PFC stage. Use Value: 1000 V VRRM provides 2× safety margin over 230 VAC RMS, minimizing risk of catastrophic failure during line surges. | Use Scenario: Input rectification in universal-input (90–264 VAC) USB-C PD chargers. IC Role / Device Role / Timing Role: Primary-side AC–DC conversion feeding active clamp flyback or QR controller IC. Use Value: 45 A IFSM withstands repeated cold-start surges into large input capacitance without degradation. |
| SMPS Front-End Rectification | Office Equipment AC Adapter |
Use Scenario: Off-line SMPS in printers and multifunction peripherals requiring robust input stage. IC Role / Device Role / Timing Role: Uncontrolled rectifier delivering DC bus to PWM controller and transformer primary. Use Value: 1.2 A IO rating supports continuous 10–12 W output with margin, while low VF reduces conduction loss at light loads. | Use Scenario: Compact wall-plug adapter for VoIP phones and network routers. IC Role / Device Role / Timing Role: Surface-mount bridge replacing discrete diode solutions to reduce BOM count and assembly cost. Use Value: MSB package footprint enables automated placement and reflow, improving yield and throughput in high-volume manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ABS10B-13 | Same MSB package, 1000 V VRRM, but rated for 1.0 A IO (vs. 1.2 A); VF = 1.1 V @ 1.0 A. | Suitable for ≤8 W adapters where thermal margin is less constrained. | Select ABS10B-13 only if system IO requirement is ≤1.0 A and board layout must retain identical footprint. |
| GBU6K | Through-hole GBU package, 1000 V VRRM, 6 A IO, RθJC = 12 °C/W, VF = 1.1 V @ 6 A. | Used in higher-power industrial SMPS where manual assembly or heatsink mounting is acceptable. | Choose GBU6K only when board-level SMT is not required and >1.2 A continuous current is needed. |
Compared with ABS10B-13 and GBU6K, MSB12M-13 uniquely balances 1.2 A current capacity, ultra-thin MSB SMT packaging, and 10 °C/W thermal resistance-making it optimal for thermally constrained, medium-power adapter designs requiring automated assembly.
Availability
MSB12M-13 is available at Aetrix Electronics and suitable for LED lighting power supplies, battery chargers, and office equipment AC adapters requiring stable component supply and legacy design continuity.
Supply support for MSB12M-13 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, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The MSB series belongs to Diodes' surface-mount bridge rectifier product line, engineered specifically for high-voltage, medium-current AC–DC conversion in compact, cost-sensitive consumer and industrial power supplies.
FAQ
Is MSB12M-13 still in active production?
No-MSB12M-13 is officially marked obsolete by Diodes Incorporated (DS37025 Rev. 6-4, December 2021). Aetrix Electronics maintains limited legacy stock for design continuity and last-time buy support, but no new manufacturing commitments exist.
What is the recommended replacement for MSB12M-13?
Diodes recommends ABS10B-13 as the functional replacement: same MSB package, identical pinout, 1000 V VRRM, and RoHS-compliant construction-though rated for 1.0 A instead of 1.2 A. System-level thermal validation is required before substitution.
Can MSB12M-13 be used in automotive applications?
No-MSB12M-13 is not AEC-Q101 qualified. The datasheet explicitly states that automotive-grade parts require separate qualification (PPAP, IATF 16949 manufacturing), and this device lacks those certifications and stress-test documentation.
What is the maximum allowable PCB pad temperature during reflow?
The MSB12M-13 is rated for peak reflow temperatures up to 260 °C for 10 seconds (per J-STD-020 Level 1), with a maximum soldering iron tip temperature of 350 °C for 3 seconds. Exceeding these limits risks delamination or internal wirebond damage.
MSB12M-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1 kV
- Current - Average Rectified (Io):
- 1.2 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1.2 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:
- 4-MSB
MSB12M-13 FAQ
1.How can I place an order for MSB12M-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSB12M-13 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 MSB12M-13 reliable?
The price and inventory of MSB12M-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSB12M-13 is usually 5 days.
3.What payment methods are accepted for MSB12M-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSB12M-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSB12M-13?
MSB12M-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSB12M-13 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 MSB12M-13?
For technical support, including MSB12M-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSB12M-13 requirements.
6.How does Aetrix verify that MSB12M-13 is sourced from the original manufacturer or authorized distributors?
All MSB12M-13 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 MSB12M-13 meets industry standards.
7.What is the process for return or replacement of MSB12M-13?
All MSB12M-13 units undergo pre-shipment inspection (PSI). If there is an issue with MSB12M-13, 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 MSB12M-13 part is unused and in its original packaging.
Return procedure for MSB12M-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSB12M-13 Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
-
MB4S-TP
Micro Commercial Co
-
MB6S-TP
Micro Commercial Co
-
CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
