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Diodes Incorporated FUS1ME
- Part No.:
- FUS1ME
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-219AA
- Datasheet:
-
FUS1ME.pdf
- Description:
- DIODE GEN PURP 1KV 1A F1A
- Quantity:
- Payment:
- Shipping:
Inventory:6,204
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Product details
Overview
FUS1ME from Diodes Incorporated is a surface-mount fast recovery rectifier diode rated for 1000 V repetitive peak reverse voltage and 1.0 A average forward current at Tc = 85°C, featuring 75 ns reverse recovery time, 1.7 V max forward voltage at 1.0 A, and <10 µA reverse leakage at 1000 V and 100°C - used in AC/DC front-end rectification and flyback snubber circuits in industrial power supplies.
For engineers reviewing the FUS1ME datasheet, FUS1ME pinout, FUS1ME application, or FUS1ME equivalent, key selection criteria include its DO-219AA package compatibility, AEC-Q101 Rev_C qualification for automotive-grade reliability, low thermal resistance (RthJC = 55°C/W), and fast switching performance in high-frequency SMPS designs.
Technical Context
This device is a single-die, glass-passivated silicon PN junction rectifier optimized for high-efficiency switching applications. Its fast recovery (TRR ≤ 75 ns) and low forward voltage (VF ≤ 1.7 V @ 1.0 A) reduce conduction and switching losses in 50–500 kHz power converters.
The DO-219AA package enables compact layout with low thermal resistance to case (55°C/W) and lead-free matte tin terminations compliant with RoHS 3 and halogen-free "Green" standards. Junction temperature range spans –55°C to +150°C, supporting operation in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse transients in 800 VAC line applications without breakdown. |
| I(AV) | 1.0 A @ Tc = 85°C - Sustains continuous output current in thermally managed PCB layouts. |
| TRR | 75 ns - Enables efficient operation up to ~500 kHz switching frequency with minimal turn-off loss. |
| VF | 1.7 V max @ 1.0 A, 25°C - Limits conduction loss to ≤1.7 W per diode under full load. |
| IR | 100 µA max @ 1000 V, 100°C - Ensures low standby power loss in high-voltage hold-up stages. |
| RthJC | 55 °C/W - Allows direct thermal path to copper pour or heatsink for reliable 1.0 A operation at elevated ambient. |
Pinout & Package
Package: JEDEC DO-219AA (SOD-123W), surface-mount, molded "Green" compound (UL 94V-0), matte tin-plated terminals, marking code "U1M".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node). |
| Cathode (K) | Forward current exit / reverse blocking terminal | Connected to output rail or capacitor positive; blocks 1000 V reverse during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Rev_C qualified | Validated for automotive power modules requiring robustness against thermal cycling and humidity. |
| Glass passivated chip | Eliminates moisture-induced degradation and improves long-term reliability vs. epoxy-passivated alternatives. |
| Low VF and low IR trade-off | Optimized doping profile delivers 1.7 V VF and only 100 µA IR at 100°C - critical for high-efficiency offline adapters. |
| Halogen- and antimony-free "Green" construction | Meets IEC 61249-2-21:2017 with Br+Cl <1500 ppm and Sb <1000 ppm - supports eco-compliance programs. |
Applications
| AC/DC Adapter Front-End | Automotive LED Driver Input Stage |
|---|---|
Use Scenario: Rectifying 230 VAC input in compact wall-wart adapters with 5–24 V output. IC Role / Device Role / Timing Role: Primary-side unidirectional current valve converting AC to pulsating DC before bulk capacitor filtering. Use Value: 75 ns TRR minimizes switching loss at 65–130 kHz operation; 1.0 A rating supports up to 12 W output with margin. | Use Scenario: Input rectification in 12 V automotive LED headlamp drivers exposed to load dump transients. IC Role / Device Role / Timing Role: High-reliability bridge or half-wave rectifier handling 1000 V surge events per ISO 7637-2. Use Value: AEC-Q101 qualification and –55°C to +150°C operation ensure functional safety in under-hood environments. |
| Industrial Flyback Snubber Diode | UPS DC Link Protection |
Use Scenario: Clamp diode in RCD snubber network across primary MOSFET in 1–3 kW telecom flyback converters. IC Role / Device Role / Timing Role: Fast-recovery path for transformer leakage energy during MOSFET turn-off. Use Value: 30 A IFSM withstands repeated 8.3 ms surges; 75 ns TRR prevents voltage overshoot due to slow recovery. | Use Scenario: Reverse polarity protection and DC link clamping in 48 V battery-backed UPS systems. IC Role / Device Role / Timing Role: Bidirectional blocking element preventing backfeed and absorbing regenerative spikes. Use Value: 1000 V VRRM handles 48 V bus transients exceeding 800 V; low IR (<10 µA @ 25°C) avoids battery drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | TO-277 package (larger footprint), TRR = 65 ns, VF = 1.7 V @ 1.0 A, same VRRM/I(AV). | Requires different PCB land pattern; higher thermal mass suits higher ambient but reduces density. | Prefer when board space allows and higher surge robustness (IFSM = 50 A) is needed. |
| ES1J | DO-214AA package, TRR = 35 ns, VF = 1.7 V @ 1.0 A, VRRM = 600 V (not 1000 V). | Insufficient for 1000 V line applications; limited to ≤277 VAC inputs. | Select only for cost-sensitive 230 VAC designs where 600 V rating suffices. |
Compared with STTH1R06 and ES1J, FUS1ME uniquely combines 1000 V rating, DO-219AA compactness, AEC-Q101 qualification, and 75 ns TRR - making it optimal for space-constrained, automotive-qualified, high-line-voltage SMPS where thermal and surge margins must coexist.
Availability
FUS1ME is available at Aetrix Electronics and suitable for industrial power supplies, automotive LED drivers, and telecom flyback converters requiring stable component supply, consistent AEC-Q101 compliance, and RoHS 3/halogen-free manufacturing traceability.
Supply support for FUS1ME 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 industrial, computing, consumer, and automotive markets with over 50 years of power device expertise.
FUS1ME belongs to Diodes' FUSxME fast recovery rectifier family, designed specifically for high-efficiency, high-reliability surface-mount AC/DC conversion in space- and thermal-constrained applications.
FAQ
What is the maximum allowable case temperature for continuous 1.0 A operation?
The FUS1ME is rated for 1.0 A average forward current at Tc = 85°C per datasheet derating curve. Operation above this requires proportional current reduction - e.g., 0.7 A at 100°C case temperature. Thermal design must maintain measured case temperature ≤85°C under worst-case ambient and airflow conditions.
Is FUS1ME suitable for use in synchronous rectification topologies?
No - FUS1ME is a standard PN junction fast recovery rectifier, not a Schottky or MOSFET-based synchronous device. It lacks the low VF of Schottkys (<0.5 V) and cannot be actively controlled. Use only in conventional diode rectification or snubber roles where passive unidirectional conduction is required.
Does the "U1M" marking correspond directly to the FUS1ME part number?
Yes - "U1M" is the standardized top-side laser marking for FUS1ME per Diodes' packaging specification. It appears on all units in tape-and-reel packaging (FUS1ME-7 and FUS1ME variants) and matches the device's electrical and thermal specifications without ambiguity.
How does the DO-219AA package compare thermally to DO-214AA (SMA)?
DO-219AA offers lower thermal resistance: RthJC = 55°C/W vs. ~75°C/W for typical DO-214AA devices. Its wider body and enhanced copper slug improve heat transfer to PCB copper, enabling higher current density in constrained layouts - verified per JESD-51 test methodology cited in the datasheet.
FUS1ME Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-219AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- F1A (DO219AA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
FUS1ME FAQ
1.How can I place an order for FUS1ME through Aetrix?
Please submit a Request for Quotation (RFQ) for FUS1ME 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 FUS1ME reliable?
The price and inventory of FUS1ME are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FUS1ME is usually 5 days.
3.What payment methods are accepted for FUS1ME?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FUS1ME transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FUS1ME?
FUS1ME orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FUS1ME 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 FUS1ME?
For technical support, including FUS1ME datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FUS1ME requirements.
6.How does Aetrix verify that FUS1ME is sourced from the original manufacturer or authorized distributors?
All FUS1ME 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 FUS1ME meets industry standards.
7.What is the process for return or replacement of FUS1ME?
All FUS1ME units undergo pre-shipment inspection (PSI). If there is an issue with FUS1ME, 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 FUS1ME part is unused and in its original packaging.
Return procedure for FUS1ME:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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