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Diodes Incorporated DF01M
- Part No.:
- DF01M
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-EDIP (0.300", 7.62mm)
- Datasheet:
-
DF01M.pdf
- Description:
- BRIDGE RECT 1PHASE 100V 1A DFM
- Quantity:
- Payment:
- Shipping:
Inventory:19,840
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Product details
Overview
DF01M from Diodes Incorporated is a 1.0A standard recovery bridge rectifier with 100V maximum repetitive peak reverse voltage (VRRM), 1.1V max forward voltage at 1.0A, 10µA max reverse leakage at 25°C, and 50A non-repetitive surge capability - designed for AC/DC conversion in low-power offline power supplies and adapter circuits.
For engineers reviewing the DF01M datasheet, DF01M pinout, DF01M application, or DF01M equivalent, this page delivers verified electrical parameters, mechanical package data, thermal resistance (40°C/W), real-world use scenarios, and validated alternative parts for cost, voltage, or automotive-grade substitution.
Technical Context
This single-phase full-wave bridge rectifier integrates four silicon diodes in a monolithic DF-M molded plastic package with bright tin-plated leads. It operates across -55°C to +150°C junction temperature and supports PCB mounting with 5.0mm² copper land areas for thermal management.
The device exhibits 25pF typical junction capacitance per element at 1.0MHz and 4.0V reverse bias, and its I²t rating of 10.4A²s enables robust transient surge handling during inrush or line disturbances without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum reverse voltage the bridge can block continuously without breakdown. |
| IO (at TA = +40°C) | 1.0 A - Continuous average output current rating under defined ambient conditions. |
| VF (at IF = 1.0A) | 1.1 V max - Forward voltage drop per diode path, directly impacting conduction loss and thermal rise. |
| IR (at VR = 100V, TA = +25°C) | 10 µA max - Reverse leakage current, critical for low-power standby efficiency and voltage hold-up stability. |
| IFSM (8.3ms half-sine) | 50 A - Peak surge current capability, supporting cold-start inrush in transformer-fed supplies. |
| RθJA | 40 °C/W - Junction-to-ambient thermal resistance on standard PCB layout, defining heatsinking requirements. |
| TJ Range | -55°C to +150°C - Operational junction temperature window, enabling use in industrial and automotive-adjacent environments. |
Pinout & Package
DF01M uses the DF-M package: molded plastic body (UL 94V-0), 7.4–7.9mm length (A), 6.2–6.5mm width (B), 8.13–8.51mm height (H), with four axial leads spaced per standardized outline. Weight ≈ 0.38g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~ (AC1) | AC Input Terminal 1 | One side of AC input winding; connects to first diode anode and second diode cathode in bridge topology. |
| ~ (AC2) | AC Input Terminal 2 | Second side of AC input winding; connects to third diode anode and fourth diode cathode. |
| + (DC+) | Positive DC Output | Anode common point of two diodes; delivers rectified positive output to filter capacitor or load. |
| – (DC–) | Negative DC Output / Ground Reference | Cathode common point of two diodes; serves as return path and system ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives, reducing parametric drift over time. |
| Surge overload rating: 50A peak (8.3ms) | Supports repeated cold-start events in wall adapters and linear power supplies without degradation. |
| UL Recognized Component (E364304) | Validates safety compliance for end-equipment certification (e.g., UL 62368-1) without requiring additional system-level testing. |
| Lead-free, RoHS-compliant finish | Meets EU Directive 2015/863/EU and supports automated lead-free reflow assembly without solderability compromise. |
Applications
| AC-DC Wall Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: 12V/1A output adapter for IoT sensors and gateways operating from 90–264VAC mains. IC Role / Device Role / Timing Role: Primary AC/DC rectification stage converting transformer secondary AC to unregulated DC bus. Use Value: Low VF (1.1V) minimizes conduction loss at 1A, improving no-load and light-load efficiency critical for Energy Star compliance. |
Use Scenario: Auxiliary 5V/1A supply in PLC I/O modules exposed to 40–85°C ambient and vibration. IC Role / Device Role / Timing Role: Input-stage bridge rectifier feeding linear regulator or buck converter for isolated logic rails. Use Value: -55°C to +150°C TJ range and UL recognition ensure stable operation and regulatory acceptance in harsh industrial enclosures. |
| LED Driver Input Stage | Appliance Power Conversion |
Use Scenario: Constant-voltage LED driver for commercial downlights with TRIAC dimming compatibility. IC Role / Device Role / Timing Role: Full-wave rectification ahead of passive PFC and buck controller IC. Use Value: 25pF junction capacitance limits EMI generation during commutation, easing EMC filter design and reducing conducted noise. |
Use Scenario: Main power supply in white goods control boards (e.g., washing machine MCU board). IC Role / Device Role / Timing Role: Mains-input rectifier feeding bulk capacitor and offline SMPS controller. Use Value: 50A surge rating withstands motor startup transients and relay contact bounce without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU2K (ON Semiconductor) | Same DF-M package, 100V VRRM, but 1.4V VF max at 1.0A - higher conduction loss. | Suitable where thermal margin exists; less efficient at full load than DF01M. | Select when GBU-series sourcing is preferred and 0.3V higher VF is acceptable. |
| MB1S (Vishay) | Smaller SMB package (not DF-M), 100V VRRM, 1.1V VF, but only 35A IFSM and 22°C/W RθJA on same PCB. | Better suited for space-constrained designs; requires tighter thermal layout due to lower surge and higher thermal resistance. | Choose for compact layouts where footprint is prioritized over surge robustness and thermal headroom. |
Compared with GBU2K and MB1S, DF01M offers superior surge immunity (50A vs. 35A/35A), identical VF performance to MB1S but in a larger, thermally optimized DF-M package, and better thermal resistance (40°C/W vs. 22°C/W for MB1S on same board area), making it optimal for reliability-critical 1A AC/DC stages.
Availability
DF01M is available at Aetrix Electronics and suitable for AC-DC wall adapters, industrial control power supplies, LED driver input stages, and appliance power conversion requiring stable component supply and long-lifecycle support.
Supply support for DF01M 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.
DF01M belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-sensitive, high-volume AC/DC front-end applications where reliability, surge tolerance, and regulatory compliance are essential.
FAQ
Is DF01M suitable for automotive applications?
No - DF01M is not AEC-Q101 qualified. While it operates from -55°C to +150°C, Diodes explicitly states that automotive-grade parts require separate qualification (PPAP, IATF 16949, AEC-Q101), and DF01M is not listed in their automotive product definitions. Use DF01MA or other AEC-Q101-certified variants for automotive designs.
What is the recommended PCB pad layout for DF01M's DF-M package?
Per Diodes' thermal characterization note, use 5.0mm² (0.03mm thick) copper land areas per terminal to achieve the specified 40°C/W RθJA. Pad dimensions should match the DF-M outline: minimum 7.4×6.2mm footprint with ≥0.5mm clearance between pads and adjacent traces to prevent solder bridging and ensure mechanical stability.
How does DF01M's 10µA IR compare to faster recovery bridges?
DF01M's 10µA max IR at 25°C is typical for standard recovery bridges and reflects its silicon PN-junction design. Fast recovery or ultrafast bridges (e.g., GBU4K) often exhibit higher IR (e.g., 50–100µA) due to lifetime control techniques - so DF01M offers lower leakage, beneficial for standby power and high-impedance hold-up circuits.
Can DF01M replace DF005M in a 50V design?
Yes - DF01M (100V VRRM) exceeds the 50V requirement of DF005M and shares identical package, pinout, and thermal characteristics. Its higher voltage rating provides increased safety margin against line surges and aging-related voltage stress, with no trade-off in VF, IR, or surge capability.
DF01M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-EDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 100 V
- Current - Average Rectified (Io):
- 1 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 V
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DFM
DF01M FAQ
1.How can I place an order for DF01M through Aetrix?
Please submit a Request for Quotation (RFQ) for DF01M 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 DF01M reliable?
The price and inventory of DF01M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF01M is usually 5 days.
3.What payment methods are accepted for DF01M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF01M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF01M?
DF01M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF01M 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 DF01M?
For technical support, including DF01M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF01M requirements.
6.How does Aetrix verify that DF01M is sourced from the original manufacturer or authorized distributors?
All DF01M 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 DF01M meets industry standards.
7.What is the process for return or replacement of DF01M?
All DF01M units undergo pre-shipment inspection (PSI). If there is an issue with DF01M, 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 DF01M part is unused and in its original packaging.
Return procedure for DF01M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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