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Diodes Incorporated DF1501M
- Part No.:
- DF1501M
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-EDIP (0.300", 7.62mm)
- Datasheet:
-
DF1501M.pdf
- Description:
- BRIDGE RECT 1PHASE 100V 1.5A DFM
- Quantity:
- Payment:
- Shipping:
Inventory:2,099
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Product details
Overview
DF1501M from Diodes Incorporated is a 1.5A glass passivated single-phase bridge rectifier with 100V peak repetitive reverse voltage (VRRM), 1.1V forward voltage at 1.5A, and 50A non-repetitive surge current rating - used in AC/DC power supplies for industrial control modules and low-power consumer adapters.
For engineers reviewing the DF1501M datasheet, DF1501M pinout, DF1501M application, or DF1501M equivalent, key selection criteria include VRRM margin for line-voltage transients, thermal resistance (40°C/W) for PCB layout cooling, IFSM capability for inrush handling, and RoHS-compliant tin-terminated leads for lead-free reflow compatibility.
Technical Context
This bridge rectifier integrates four silicon diodes in a single DF-M molded plastic package, configured as a full-wave Graetz circuit to convert 50/60Hz AC input into pulsating DC output. It operates across –65°C to +150°C with junction-to-ambient thermal resistance of 40°C/W under standard 13×13mm² copper pad conditions.
Designed for printed circuit board mounting, it supports capacitive-load derating (–20% current rating) and delivers stable performance up to 125°C junction temperature, with typical reverse leakage of 10µA at 25°C and 500µA at 125°C under rated blocking voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Withstands 100V peak reverse voltage without breakdown; suitable for 70V RMS AC inputs (e.g., 100VAC nominal systems). |
| IO @ TA=40°C | 1.5 A - Continuous average output current at 40°C ambient; requires thermal management above this temperature per Fig.1 derating curve. |
| VFM @ IF=1.5A | 1.1 V - Forward voltage drop per diode element; total bridge conduction loss ≈ 2.2V × 1.5A = 3.3W worst-case. |
| IFSM (8.3ms) | 50 A - Surge withstand capability for single half-sine waveform; supports high inrush currents in transformer-coupled supplies. |
| RθJA | 40 °C/W - Junction-to-ambient thermal resistance on standard PCB land pattern; determines required copper area for thermal design. |
| CT @ 1MHz | 25 pF - Typical total junction capacitance per element; impacts EMI filtering and high-frequency noise coupling in switching environments. |
Pinout & Package
DF1501M uses the DF-M surface-mount package: molded plastic case (UL 94V-0), 7.4–7.9mm length (A), 6.2–6.5mm width (B), 8.13–8.51mm height (H), with tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One side of AC input winding; connects to transformer secondary or line input; marked with polarity symbol on case. |
| ~AC2 | AC Input Terminal 2 | Other side of AC input winding; completes full-wave bridge input path; symmetric with ~AC1 for bidirectional AC feed. |
| +DC | Positive DC Output | Anode of output diode pair; delivers rectified positive voltage to bulk capacitor or regulator input. |
| –DC | Negative DC Output / Ground Reference | Cathode of output diode pair; serves as common return path and system ground reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enables stable long-term reliability and moisture resistance without hermetic sealing - critical for humid industrial environments. |
| UL Recognized Component (E94661) | Validated safety compliance for end-equipment certification; eliminates need for additional isolation testing in Class II AC/DC designs. |
| Lead-free, RoHS-compliant finish (Date Code 0532+) | Meets global environmental regulations; compatible with Pb-free reflow profiles (peak ≤260°C) without solder joint degradation. |
| 50A surge rating (8.3ms) | Withstands cold-start inrush surges from uncharged bulk capacitors - reduces need for external NTC thermistors or active limiting. |
Applications
| Industrial Power Supply | Consumer AC Adapter |
|---|---|
Use Scenario: 24VDC industrial control power supply fed from 24VAC transformer secondary. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 24VAC to unregulated DC prior to linear regulation or buck conversion. Use Value: 1.5A continuous rating supports PLC I/O module power budgets; 40°C/W RθJA enables compact heatsink-free layout on 2-layer PCB. | Use Scenario: Wall-mounted 5V/1A USB charger using flyback topology with primary-side rectification. IC Role / Device Role / Timing Role: Secondary-side bridge rectifier delivering DC bus to post-regulator stage. Use Value: 1.1V VFM minimizes conduction loss at full load; UL recognition simplifies CE/UKCA certification for OEM adapter designs. |
| LED Driver Input Stage | Appliance Control Board |
Use Scenario: Constant-current LED driver for commercial lighting operating from 120VAC mains via step-down transformer. IC Role / Device Role / Timing Role: Mains-frequency bridge rectifier feeding bulk capacitor and PFC or buck-boost controller. Use Value: 100V VRRM provides 2× safety margin over 70V RMS transformer output; 50A IFSM handles lamp filament preheat surges. | Use Scenario: Embedded control board in washing machine motor drive, powered by auxiliary 12VAC winding. IC Role / Device Role / Timing Role: AC-to-DC conversion for microcontroller, relay drivers, and sensor interface rails. Use Value: –65°C to +150°C operating range ensures functionality during thermal cycling in enclosed cabinet environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU1K | Same 1.5A/100V rating but GBU package (larger, through-hole); RθJA ≈ 50°C/W; no UL listing. | Requires through-hole assembly; less suitable for high-density SMT production or automated optical inspection. | Select when legacy through-hole compatibility or higher mechanical robustness is prioritized over board space. |
| MB1S | SMD SMB package; lower 1A IO rating; VRRM = 100V; RθJA = 65°C/W; no UL recognition. | Limited to <1A loads; unsuitable for sustained 1.5A operation without aggressive thermal design. | Choose only for space-constrained prototypes where current demand stays below 0.8A average. |
Compared with GBU1K and MB1S, DF1501M uniquely combines SMT DF-M footprint, UL recognition, 1.5A continuous rating with 40°C/W thermal resistance, and RoHS-compliant termination - making it optimal for certified, volume-manufactured AC/DC front-ends requiring reliability and regulatory alignment.
Availability
DF1501M is available at Aetrix Electronics and suitable for industrial power supplies, consumer AC adapters, LED driver input stages, and appliance control boards requiring stable component supply and long-lifecycle support.
Supply support for DF1501M 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 and manufacturing operations across Asia and the US.
The DF-series bridge rectifiers are engineered for cost-effective, high-reliability AC/DC conversion in mainstream power supply applications - emphasizing thermal efficiency, safety certification, and manufacturability in high-volume SMT lines.
FAQ
What is the maximum allowable PCB pad size for optimal thermal performance of DF1501M?
Optimal thermal performance requires 13×13mm² copper land areas per terminal as specified in the datasheet. Smaller pads increase RθJA beyond the rated 40°C/W, risking thermal runaway at full 1.5A load. Use internal copper planes or thermal vias if board space limits surface pad size.
Can DF1501M be used in capacitive-input filter configurations?
Yes, but with 20% current derating per the datasheet. At 1.5A rated IO, maximum continuous current drops to 1.2A in capacitive-input designs due to higher peak diode conduction stress and harmonic heating - verify junction temperature using RθJA and actual ambient conditions.
Is DF1501M compliant with JEDEC moisture sensitivity level standards?
Yes, DF1501M is rated Moisture Sensitivity Level 1 per J-STD-020C, meaning it may be stored indefinitely at ≤30°C/60% RH without baking prior to reflow. No floor life limitation applies, simplifying inventory and assembly logistics.
Does DF1501M support operation at elevated ambient temperatures like 70°C?
Yes, but with strict derating: Fig.1 shows IO drops to ~1.0A at 70°C ambient. For 1.5A operation at 70°C, forced air cooling or enhanced copper thermal mass is required to maintain Tj ≤150°C - calculate using ΔT = IO²×RθJA×(VFM/2) + TA.
DF1501M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-EDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 100 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 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
DF1501M FAQ
1.How can I place an order for DF1501M through Aetrix?
Please submit a Request for Quotation (RFQ) for DF1501M 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 DF1501M reliable?
The price and inventory of DF1501M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF1501M is usually 5 days.
3.What payment methods are accepted for DF1501M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF1501M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF1501M?
DF1501M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF1501M 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 DF1501M?
For technical support, including DF1501M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF1501M requirements.
6.How does Aetrix verify that DF1501M is sourced from the original manufacturer or authorized distributors?
All DF1501M 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 DF1501M meets industry standards.
7.What is the process for return or replacement of DF1501M?
All DF1501M units undergo pre-shipment inspection (PSI). If there is an issue with DF1501M, 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 DF1501M part is unused and in its original packaging.
Return procedure for DF1501M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF1501M Tags
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