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Vishay General Semiconductor - Diodes Division 1N3957GP-E3/73
- Part No.:
- 1N3957GP-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N3957GP-E3/73.pdf
- Description:
- DIODE GEN PURP 1KV 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,744
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Product details
Overview
1N3957GP-E3/73 from Vishay General Semiconductor is a glass passivated junction plastic rectifier diode in DO-41 package, rated for 1000 V repetitive peak reverse voltage (VRRM), 1.0 A average forward current (IF(AV)), and 1.0 V forward voltage drop at 1.0 A. It serves as a high-reliability general-purpose rectifier in AC/DC power supplies and freewheeling paths.
For engineers reviewing the 1N3957GP-E3/73 datasheet, 1N3957GP-E3/73 pinout, 1N3957GP-E3/73 application, or 1N3957GP-E3/73 equivalent, key selection criteria include its 1000 V blocking capability, 2.0 μs reverse recovery time, low 1.0 μA leakage at 25 °C, 175 °C max junction temperature, and DO-41 mechanical compatibility with legacy through-hole layouts.
Technical Context
This device belongs to the SUPERECTIFIER® family of fast-recovery rectifiers, featuring cavity-free glass-passivated junction construction that ensures stable performance under thermal cycling and humidity stress. Its 2.0 μs typical reverse recovery time (trr) and 8.0 pF junction capacitance at 4.0 V support moderate-frequency switching in offline SMPS and converter front-ends.
The 1N3957GP-E3/73 operates across –65 °C to +175 °C junction temperature range and sustains 30 A non-repetitive surge current (IFSM) for 8.3 ms half-sine waves - enabling robust handling of line transients and inductive kickback in industrial power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports direct rectification of 700 V RMS AC inputs (e.g., 3-phase 400 VAC systems with margin) |
| IF(AV) | 1.0 A at 75 °C ambient with 0.375" lead length - suitable for low-to-medium power linear and flyback supplies |
| VF | 1.0 V at 1.0 A - minimizes conduction loss and self-heating in continuous forward-biased operation |
| trr | 2.0 μs - enables use up to ~100 kHz switching frequencies without excessive switching loss |
| IR | 1.0 μA at 25 °C, 1000 V - ensures low standby power loss in high-impedance hold-up or sensing circuits |
| TJ max. | +175 °C - allows operation in sealed enclosures or near heat-generating components without derating |
| RθJL | 25 °C/W - enables efficient heat transfer to PCB copper when leads are soldered to thermal pads |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy over glass body; cathode indicated by color band; RoHS-compliant matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or inductive load return path; must withstand full surge current |
| Cathode | Forward current exit point | Marked with color band; connects to DC output rail or snubber network; carries full rectified current |
Key Features
| Feature | Design Value |
|---|---|
| Superectifier® structure | Enhanced reliability via cavity-free glass passivation - eliminates moisture ingress paths and interfacial delamination risk |
| Low leakage current | IR ≤ 1.0 μA at 25 °C - preserves efficiency in high-voltage standby circuits and reduces thermal runaway risk |
| High surge capability | IFSM = 30 A (8.3 ms) - survives repeated line surges and motor-start inrush without degradation |
| Solderability | Rated for 275 °C dip soldering (10 s, JESD 22-B106) - compatible with wave and selective soldering processes |
| Flammability rating | UL 94 V-0 molding compound - meets safety requirements for enclosed power equipment |
Applications
| AC/DC Power Supply Rectification | Freewheeling Diode in Relay/Contactor Circuits |
|---|---|
Use Scenario: Full-wave bridge rectification in 100–240 VAC input offline power supplies delivering up to 12 W. IC Role / Device Role / Timing Role: Primary rectifying element converting AC mains to unregulated DC bus. Use Value: 1000 V VRRM provides 2× safety margin over 240 VAC peak (340 V), while 1.0 V VF limits conduction loss to <1.0 W at full load. | Use Scenario: Suppressing back-EMF spikes across 24 VDC relay coils in PLC I/O modules. IC Role / Device Role / Timing Role: Freewheeling path for inductive energy dissipation during coil de-energization. Use Value: 30 A IFSM handles 10× nominal coil current surges; 2.0 μs trr prevents voltage overshoot beyond MOSFET or driver breakdown limits. |
| Inverter DC Link Protection | Industrial Converter Input Stage |
Use Scenario: Reverse-polarity protection and transient clamping on 400 VDC bus lines feeding three-phase inverters. IC Role / Device Role / Timing Role: Blocking diode preventing regenerative current flow into upstream converters. Use Value: 175 °C TJ max. ensures stability during prolonged bus overvoltage events; 1.0 μA IR avoids parasitic discharge in high-impedance monitoring branches. | Use Scenario: Input rectification in 48 VDC–400 VDC boost converters used in solar microinverters. IC Role / Device Role / Timing Role: High-voltage input stage rectifier handling bidirectional current during soft-switching transitions. Use Value: 8.0 pF CJ minimizes capacitive coupling noise into gate drive signals; DO-41 footprint allows manual rework in field-serviceable units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4007GP-E3/73 | VRRM = 1000 V, but trr ≈ 30 μs (slow recovery); VF = 1.1 V at 1.0 A | Not suitable for >10 kHz switching; higher conduction loss and EMI in fast-switching converters | Select only for cost-sensitive, low-frequency (<1 kHz), non-critical rectification where recovery speed is irrelevant |
| UF4007-E3/73 | VRRM = 1000 V, trr = 50 ns (ultrafast), VF = 1.7 V at 1.0 A | Higher forward loss increases thermal stress in continuous conduction mode; better for high-frequency snubbers | Prefer when reverse recovery speed dominates design constraints (e.g., resonant LLC), accepting higher VF penalty |
Compared with 1N4007GP-E3/73 and UF4007-E3/73, the 1N3957GP-E3/73 delivers optimal balance: faster recovery than standard 1N400x series for improved efficiency in 50–100 kHz converters, yet lower VF than ultrafast UF400x devices - reducing both conduction and switching losses in mid-frequency industrial power stages.
Availability
1N3957GP-E3/73 is available at Aetrix Electronics and suitable for AC/DC power supply rectification, freewheeling diode applications, and industrial converter input stages requiring stable component supply and long-term obsolescence management.
Supply support for 1N3957GP-E3/73 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, ruggedness, and automotive/industrial qualification.
The 1N3957GP-E3/73 belongs to Vishay's SUPERECTIFIER® rectifier product line, engineered for high-voltage, medium-current general-purpose rectification where long-term stability under thermal and electrical stress is critical.
FAQ
What is the maximum junction temperature rating for the 1N3957GP-E3/73?
The 1N3957GP-E3/73 has a maximum junction temperature (TJ max.) of +175 °C, verified per JEDEC standards. This rating allows reliable operation in high-ambient environments such as enclosed industrial drives or sealed power supplies. Derating curves in the datasheet specify reduced IF(AV) above 75 °C ambient, and thermal resistance values (RθJL = 25 °C/W) support accurate board-level thermal modeling for the 1N3957GP-E3/73.
Is the 1N3957GP-E3/73 RoHS-compliant and lead-free?
Yes, the 1N3957GP-E3/73 is RoHS-compliant and lead-free, as confirmed by the "E3" suffix in its part number and Vishay's material categorization documentation. The matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and the device passes JESD 201 Class 1A whisker testing. Compliance data is published in Vishay document #99912, applicable to the 1N3957GP-E3/73.
What does the "/73" suffix indicate in 1N3957GP-E3/73?
Per Vishay's ordering information, the "/73" suffix in 1N3957GP-E3/73 denotes ammo pack packaging containing 3000 units. This differs from "/54", which indicates 5500 units on 13" paper tape and reel. Both variants share identical electrical and mechanical specifications; the 1N3957GP-E3/73 is functionally identical to 1N3957GP-E3/54 except for packaging format and quantity per unit.
How does the reverse recovery time of the 1N3957GP-E3/73 compare to standard 1N400x diodes?
The 1N3957GP-E3/73 has a typical reverse recovery time (trr) of 2.0 μs, significantly faster than standard 1N4007GP-E3/73 (≈30 μs). This enables cleaner commutation in switch-mode topologies operating above 10 kHz, reducing switching losses and EMI generation. The 1N3957GP-E3/73 achieves this without the higher forward voltage penalty seen in ultrafast alternatives like UF4007.
Why is the 1N3957GP-E3/73 marked "Not for New Designs"?
Vishay marks the 1N3957GP-E3/73 "Not for New Designs" due to strategic portfolio rationalization and migration toward newer platforms with enhanced efficiency or integrated features. However, the 1N3957GP-E3/73 remains fully supported for existing designs, with guaranteed supply continuity, full datasheet documentation, and no announced discontinuance date. Aetrix Electronics maintains active inventory and lifecycle coordination for the 1N3957GP-E3/73.
1N3957GP-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -65°C ~ 175°C
1N3957GP-E3/73 FAQ
1.How can I place an order for 1N3957GP-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3957GP-E3/73 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 1N3957GP-E3/73 reliable?
The price and inventory of 1N3957GP-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3957GP-E3/73 is usually 5 days.
3.What payment methods are accepted for 1N3957GP-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3957GP-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3957GP-E3/73?
1N3957GP-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3957GP-E3/73 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 1N3957GP-E3/73?
For technical support, including 1N3957GP-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3957GP-E3/73 requirements.
6.How does Aetrix verify that 1N3957GP-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1N3957GP-E3/73 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 1N3957GP-E3/73 meets industry standards.
7.What is the process for return or replacement of 1N3957GP-E3/73?
All 1N3957GP-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N3957GP-E3/73, 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 1N3957GP-E3/73 part is unused and in its original packaging.
Return procedure for 1N3957GP-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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