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Diodes Incorporated FUS1JE-7
- Part No.:
- FUS1JE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-219AA
- Datasheet:
-
FUS1JE-7.pdf
- Description:
- DIODE GEN PURP 600V 1A F1A
- Quantity:
- Payment:
- Shipping:
Inventory:2,415
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Product details
Overview
FUS1JE-7 from Diodes Incorporated is a surface-mount fast recovery rectifier diode rated for 600 V repetitive peak reverse voltage and 1.0 A average forward current at TC = 90°C, featuring 75 ns reverse recovery time, 1.7 V max forward voltage at 1.0 A, and low 5 µA leakage at 600 V/25°C - deployed in AC-DC front-end and DC-DC flyback secondary rectification.
For engineers reviewing the FUS1JE-7 datasheet, FUS1JE-7 pinout, FUS1JE-7 application, or FUS1JE-7 equivalent, key selection criteria include verified fast recovery (TRR ≤ 75 ns), DO-219AA package thermal performance (RthJC = 40°C/W), low VF/IR trade-off, and RoHS-compliant lead-free plating with halogen-free molding compound.
Technical Context
This device operates as a unidirectional power rectifier with PN junction construction, optimized for high-frequency switching converters where low stored charge and rapid carrier recombination minimize switching losses. Its glass-passivated chip ensures stable reverse characteristics across temperature.
The DO-219AA package enables compact PCB layout with low thermal resistance to heatsink (RthJC = 40°C/W) and supports automated SMT assembly. Junction capacitance of 18 pF at 4 V reverse bias confirms suitability for <1 MHz operation without excessive capacitive loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands peak line transients in universal-input offline SMPS without avalanche breakdown. |
| I(AV) | 1.0 A @ TC = 90°C - Supports continuous conduction mode output rectification in 10–15 W adapters. |
| TRR | 75 ns - Enables efficient operation up to ~100 kHz in flyback and forward converters. |
| VF | 1.7 V max @ IF = 1.0 A - Limits conduction loss to ≤1.7 W per diode in high-duty-cycle applications. |
| IR | 5 µA @ VR = 600 V, 25°C - Ensures minimal standby power loss in energy-efficient designs. |
| RthJC | 40°C/W - Allows direct thermal coupling to copper pour for passive cooling in space-constrained layouts. |
Pinout & Package
Package: JEDEC DO-219AA - surface-mount, flat-lead, single-diode configuration with cathode band marking (U1J). Dimensions: 3.8 × 1.9 × 1.18 mm (L×W×H), 16.5 mg weight, matte tin-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to transformer secondary or switch node; requires adequate copper area for heat dissipation. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band (U1J); ties to output capacitor negative or ground return path. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 75 ns - Reduces reverse recovery charge (Qrr) to <15 nC, lowering EMI and MOSFET stress in synchronous rectified topologies. |
| Glass passivation | Hermetic chip protection - Maintains stable IR and VF over 10-year field life under humid industrial conditions. |
| Halogen- and antimony-free | <900 ppm Br/Cl, <1000 ppm Sb - Meets IPC-1752A Class 3 material declarations for automotive and medical end equipment. |
| Low thermal resistance | RthJC = 40°C/W - Enables 1.0 A operation with ≤40°C junction rise above heatsink in 2-layer PCBs. |
Applications
| AC-DC Adapter Secondary Rectification | DC-DC Flyback Output Stage |
|---|---|
Use Scenario: 12 V/0.8 A output in universal-input (85–265 VAC) wall adapter with 65 kHz switching frequency. IC Role / Device Role / Timing Role: Uncontrolled rectifier converting transformer secondary AC to pulsating DC before bulk capacitor filtering. Use Value: 75 ns TRR minimizes voltage overshoot during MOSFET turn-on, reducing snubber losses by ≥12% vs. standard recovery diodes. | Use Scenario: Isolated 5 V/1.0 A auxiliary rail in telecom power module with tight thermal envelope. IC Role / Device Role / Timing Role: Primary-side referenced output rectifier operating in discontinuous conduction mode (DCM). Use Value: 1.7 V VF limits conduction loss to 1.7 W at full load, enabling 25°C ambient operation without forced air. |
| Industrial PLC Power Supply Input | LED Driver Bulk Rectification |
Use Scenario: 24 V/0.5 A control rail fed from 48 VDC input with transient suppression requirements. IC Role / Device Role / Timing Role: Input-stage bridge rectifier leg handling 600 V surge events per IEC 61000-4-5 Level 3. Use Value: 600 V VRRM and 30 A IFSM withstand 2 kV ring-wave surges without degradation. | Use Scenario: Off-line LED driver (120 VAC input) driving 10-series white LEDs at 350 mA. IC Role / Device Role / Timing Role: Half-wave rectifier feeding constant-current buck controller with PFC pre-regulator. Use Value: 5 µA IR at 600 V ensures <1 mW standby loss, meeting Energy Star v2.0 no-load requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ES1J-E3/5AT (Vishay) | Same DO-219AA package, TRR = 35 ns (faster), VF = 1.7 V (identical), VRRM = 600 V. | Lower Qrr improves light-load efficiency in PFC stages but increases cost by 18%. | Select when TRR < 40 ns is required for >200 kHz operation or critical EMI targets. |
| 1N4937G (ON Semiconductor) | DO-41 through-hole, TRR = 200 ns (slower), VF = 1.2 V (lower), VRRM = 600 V, I(AV) = 1.0 A. | Larger footprint and higher thermal resistance limit use to non-SMT legacy designs with ample board space. | Choose only for manual assembly or repair of existing through-hole platforms. |
Compared with ES1J-E3/5AT and 1N4937G, FUS1JE-7 delivers optimal balance of speed (75 ns), thermal performance (RthJC = 40°C/W), and SMT manufacturability - making it preferred for new 65–100 kHz consumer and industrial power supplies where cost, size, and reliability are jointly constrained.
Availability
FUS1JE-7 is available at Aetrix Electronics and suitable for AC-DC adapters, industrial PLC power supplies, LED drivers, and DC-DC flyback converters requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for FUS1JE-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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
FUS1JE-7 belongs to Diodes' FUS fast recovery rectifier product line, engineered specifically for high-efficiency, compact SMT power conversion where low TRR, controlled VF, and robust thermal packaging are essential.
FAQ
What is the maximum junction temperature rating for FUS1JE-7?
The FUS1JE-7 has an operating junction temperature range of –55°C to +150°C, with derating beginning at case temperatures above 90°C. At TC = 90°C, it sustains 1.0 A average forward current; beyond that, current must be linearly reduced per the forward current derating curve in the datasheet.
Is FUS1JE-7 suitable for use in synchronous rectification circuits?
No - FUS1JE-7 is a passive silicon PN junction rectifier, not a MOSFET-based synchronous rectifier. It lacks gate control and cannot be actively switched. It functions only as a unidirectional, self-commutated device and must be used in conventional hard-switched topologies.
Does the "U1J" marking indicate polarity or a date code?
The "U1J" marking on the FUS1JE-7 is the device's identification code, where the band denotes the cathode terminal. It is not a date code; Diodes Incorporated uses separate laser-marked date codes (YYWW format) on reels for traceability, per their packaging standards.
Can FUS1JE-7 replace a standard recovery rectifier like 1N4007 in a 60 Hz transformer-based supply?
Yes - its 600 V VRRM and 1.0 A I(AV) exceed 1N4007 ratings, and its faster recovery introduces no risk at 60 Hz. However, the DO-219AA package requires SMT reflow, not through-hole soldering, so board layout and assembly process must be updated accordingly.
FUS1JE-7 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):
- 600 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 @ 600 V
- Capacitance @ Vr, F:
- 18pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- F1A (DO219AA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
FUS1JE-7 FAQ
1.How can I place an order for FUS1JE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for FUS1JE-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 FUS1JE-7 reliable?
The price and inventory of FUS1JE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FUS1JE-7 is usually 5 days.
3.What payment methods are accepted for FUS1JE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FUS1JE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FUS1JE-7?
FUS1JE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FUS1JE-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 FUS1JE-7?
For technical support, including FUS1JE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FUS1JE-7 requirements.
6.How does Aetrix verify that FUS1JE-7 is sourced from the original manufacturer or authorized distributors?
All FUS1JE-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 FUS1JE-7 meets industry standards.
7.What is the process for return or replacement of FUS1JE-7?
All FUS1JE-7 units undergo pre-shipment inspection (PSI). If there is an issue with FUS1JE-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 FUS1JE-7 part is unused and in its original packaging.
Return procedure for FUS1JE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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