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Diodes Incorporated DFLS1200-7
- Part No.:
- DFLS1200-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLS1200-7.pdf
- Description:
- DIODE SCHOTTKY 200V 1A PWRDI123
- Quantity:
- Payment:
- Shipping:
Inventory:1,909
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Product details
Overview
DFLS1200-7 from Diodes Incorporated is a 1.0A, 200V Schottky barrier rectifier in PowerDI123 package, featuring low forward voltage (0.85V @ 1.0A), 40A non-repetitive surge capability, and guard ring die construction for transient protection-used in AC/DC input stages of compact power adapters and USB-C PD chargers.
For engineers reviewing the DFLS1200-7 datasheet, DFLS1200-7 pinout, DFLS1200-7 application, or DFLS1200-7 equivalent, key selection criteria include its 200V reverse voltage rating, 132°C/W junction-to-ambient thermal resistance on FR-4, RoHS-compliant matte tin finish, and suitability for high-efficiency, space-constrained 5–20W offline power supplies.
Technical Context
This Schottky rectifier employs a guard ring die structure to suppress edge breakdown and improve transient robustness under repetitive voltage spikes. Its interlocking clip design enhances mechanical bond integrity and enables 40A IFSM surge handling without bond wire failure.
Optimized for low-loss operation, it delivers 0.85V VF at 1.0A IF with only 23pF junction capacitance at 5V reverse bias-minimizing switching losses and EMI in high-frequency flyback and buck-derived topologies operating up to 100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Withstands peak reverse transients in universal-input (85–265VAC) SMPS front-ends |
| IF(AV) | 1.0 A - Supports continuous output current up to 1.0A in compact 5–12W adapters |
| VF @ 1.0A | 0.85 V - Reduces conduction loss to ≤0.85W, enabling >88% efficiency at light load |
| IFSM | 40 A - Survives cold-start inrush and line-dip recovery surges in unregulated inputs |
| RθJA | 132 °C/W - Requires ≥25 mm² 2-oz copper pad for safe operation at full current in ambient ≤50°C |
| CT @ 5V | 23 pF - Limits capacitive coupling noise and improves EMI filter attenuation above 1MHz |
Pinout & Package
Package: PowerDI123 - surface-mount, 3-pin (anode-cathode-anode) plastic molded case with exposed cathode tab for thermal conduction; UL 94V-0 rated, 0.01g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input current entry point | Connected to transformer secondary or switch node; dual anode pins share 1.0A average current path |
| Cathode (Tab) | Output current exit / thermal path | Exposed metal tab serves as both electrical cathode terminal and primary heat sink interface to PCB |
| Anode (Pin 3) | Input current entry point | Second anode pin reduces bond wire inductance and improves surge current distribution |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge avalanche, enabling stable 200V blocking without premature breakdown under dv/dt stress |
| Interlocking clip design | Increases surge current capacity to 40A by improving die-to-leadframe mechanical and thermal contact |
| Matte tin annealed finish | Ensures reliable solder wetting per MIL-STD-202 Method 208, compatible with lead-free reflow profiles |
| Halogen & antimony free | Meets <900ppm Br/Cl and <1000ppm Sb thresholds-certified "Green" per Diodes' environmental policy |
Applications
| USB-C Power Delivery Adapter | Industrial IoT Sensor Power Supply |
|---|---|
Use Scenario: 5–20W universal-input AC/DC adapter delivering 5–20V at up to 3A via USB-C PD negotiation. IC Role / Device Role / Timing Role: Output rectifier in high-frequency flyback converter, replacing slower PN diodes to reduce losses. Use Value: 0.85V VF cuts conduction loss by ~40% vs. 1N5819, enabling smaller heatsink and higher power density. | Use Scenario: Field-deployed wireless sensor node powered from 12V AC wall adapter with wide ambient temperature range (-40°C to +85°C). IC Role / Device Role / Timing Role: Input rectifier in ultra-low-quiescent linear regulator front-end, handling 50Hz/60Hz ripple rejection. Use Value: -65°C to +175°C operating range ensures reliability across outdoor industrial environments without derating. |
| LED Driver Auxiliary Supply | Medical Portable Diagnostic Charger |
Use Scenario: Auxiliary 5V/0.5A supply for microcontroller and communication ICs in constant-current LED driver modules. IC Role / Device Role / Timing Role: Secondary-side rectifier feeding low-noise LDO, where low CT minimizes switching noise coupling. Use Value: 23pF capacitance reduces high-frequency noise injection into analog sensing circuits. | Use Scenario: Compact battery charger for handheld ultrasound or glucose meter with strict leakage and safety compliance. IC Role / Device Role / Timing Role: Isolated DC output rectifier meeting IEC 60601 creepage/clearance requirements via compact PowerDI123 footprint. Use Value: Cathode-tab thermal path enables direct PCB copper pour grounding-reducing EMI and simplifying safety layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS12H | Same 200V VRRM, but VF = 0.92V @ 1A; RθJA = 150°C/W; no guard ring | Lacks transient-hardened die; less suitable for surge-prone mains-connected inputs | Prefer DFLS1200-7 where input line spikes exceed 150V or surge immunity is critical |
| SB120 | Lower 20V VRRM (120V); VF = 0.82V @ 1A; DO-214AA package; higher RθJA (160°C/W) | Not rated for universal AC input; requires larger board area and thermal relief | Select DFLS1200-7 for 200V-rated designs needing compact SMT footprint and superior thermal performance |
Compared with SS12H and SB120, the DFLS1200-7 uniquely combines 200V blocking, guard ring protection, and 132°C/W thermal resistance in a 3.7mm × 2.8mm footprint-making it optimal for space-constrained, high-surge industrial and medical AC/DC converters.
Availability
DFLS1200-7 is available at Aetrix Electronics and suitable for USB-C PD adapters, industrial IoT sensor power supplies, LED driver auxiliary rails, and portable medical device chargers requiring stable component supply and long-term manufacturability.
Supply support for DFLS1200-7 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 DFLS1200-7 belongs to Diodes' PowerDI® Schottky rectifier product line, engineered specifically for high-efficiency, high-surge, space-constrained AC/DC and DC/DC power conversion in commercial and industrial applications.
FAQ
What is the maximum junction temperature for continuous operation?
The DFLS1200-7 supports continuous operation from –65°C to +175°C junction temperature. At 1.0A average forward current and 25°C ambient, junction temperature rise is approximately 132°C (RθJA × Pd), reaching ~157°C-well within the 175°C limit when mounted on a minimum 25 mm² 2-oz copper pad.
Is the PowerDI123 package lead-free and RoHS compliant?
Yes. The DFLS1200-7 uses matte tin annealed over copper leadframe, fully compliant with EU RoHS directives 2002/95/EC, 2011/65/EU, and 2015/863/EU. It is also halogen- and antimony-free, certified "Green" per Diodes' specifications (<900ppm Br/Cl, <1000ppm Sb).
How does the guard ring die construction improve reliability?
The guard ring structure surrounds the active junction periphery to control electric field distribution, preventing premature edge breakdown during voltage transients. This allows the device to sustain 200V reverse bias under fast-rising dv/dt conditions-critical in noisy industrial AC lines and flyback transformer leakage spikes.
Can DFLS1200-7 replace standard PN rectifiers like 1N4007?
No-it is not a drop-in replacement. While both handle 1A average current, the DFLS1200-7 is a Schottky rectifier (200V VRRM, 0.85V VF) with no reverse recovery time, whereas 1N4007 is a silicon PN diode (1000V VRRM, 1.1V VF, 30µs trr). Use only where 200V rating suffices and low VF/zero Qrr is required.
DFLS1200-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 µA @ 200 V
- Capacitance @ Vr, F:
- 23pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -65°C ~ 175°C
DFLS1200-7 FAQ
1.How can I place an order for DFLS1200-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLS1200-7 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 DFLS1200-7 reliable?
The price and inventory of DFLS1200-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLS1200-7 is usually 5 days.
3.What payment methods are accepted for DFLS1200-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLS1200-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLS1200-7?
DFLS1200-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLS1200-7 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 DFLS1200-7?
For technical support, including DFLS1200-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLS1200-7 requirements.
6.How does Aetrix verify that DFLS1200-7 is sourced from the original manufacturer or authorized distributors?
All DFLS1200-7 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 DFLS1200-7 meets industry standards.
7.What is the process for return or replacement of DFLS1200-7?
All DFLS1200-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLS1200-7, 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 DFLS1200-7 part is unused and in its original packaging.
Return procedure for DFLS1200-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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