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Vishay General Semiconductor - Diodes Division 1N3957GPHE3/73
- Part No.:
- 1N3957GPHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N3957GPHE3/73.pdf
- Description:
- DIODE GEN PURP 1KV 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,288
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Product details
Overview
1N3957GPHE3/73 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 (VF) 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 1N3957GPHE3/73 datasheet, 1N3957GPHE3/73 pinout, 1N3957GPHE3/73 application, or 1N3957GPHE3/73 equivalent, key selection criteria include its 1000 V blocking capability, low 1.0 μA reverse leakage at 25 °C, 2.0 μs typical reverse recovery time, and suitability for industrial power conversion where thermal robustness to 175 °C junction temperature is required.
Technical Context
This Superectifier®-structured diode features a cavity-free glass-passivated junction enabling stable performance under thermal cycling and humidity stress. Its 2.0 μs reverse recovery time and 8.0 pF junction capacitance support moderate-speed switching in line-frequency rectification and flyback snubber circuits.
Designed for PCB mounting with 0.375" (9.5 mm) lead length, it exhibits RθJA = 55 °C/W and RθJL = 25 °C/W thermal resistance - critical for derating in enclosed power supplies operating up to 75 °C ambient. The matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports input rectification from 700 V RMS sources without breakdown |
| IF(AV) | 1.0 A at 75 °C ambient - defines continuous DC output current capability in standard heatsink-free layout |
| VF | 1.0 V at 1.0 A - determines conduction loss of 1.0 W per diode in series rectifier configuration |
| IR | 1.0 μA at 25 °C - ensures minimal standby power loss in high-impedance hold-up circuits |
| trr | 2.0 μs - enables use in 20 kHz–50 kHz flyback freewheeling without excessive switching loss |
| TJ max. | 175 °C - allows operation in sealed industrial enclosures with limited airflow |
| RθJA | 55 °C/W - sets maximum power dissipation limit of ~1.1 W at 75 °C ambient before exceeding TJ max |
Pinout & Package
Package: DO-41 (DO-204AL), molded epoxy over glass body; UL 94 V-0 rated; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC source or transformer secondary during positive half-cycle |
| Cathode | Forward current exit point | Connected to load or filter capacitor; marked by color band on package body |
Key Features
| Feature | Design Value |
|---|---|
| Superectifier® structure | Enhanced reliability via cavity-free glass passivation, reducing moisture-induced failure in humid environments |
| Low IR (1.0 μA @ 25 °C) | Minimizes reverse-bias leakage in high-voltage hold-up or sensing circuits |
| High IFSM (30 A) | Withstands inrush surges from cold-started capacitive-input power supplies |
| Solder dip rating (275 °C, 10 s) | Enables compatibility with wave-solder and selective reflow processes without junction damage |
| Junction temperature range (−65 to +175 °C) | Supports deployment in automotive under-hood or industrial outdoor enclosures |
Applications
| AC/DC Power Supply Rectification | Inverter DC Bus Freewheeling |
|---|---|
Use Scenario: Full-wave bridge rectification in 100–240 VAC input offline SMPS. IC Role / Device Role / Timing Role: Discrete rectifier diode conducting during positive/negative half-cycles to generate unidirectional DC bus. Use Value: 1000 V VRRM prevents breakdown during 340 V peak transients; 1.0 V VF limits conduction loss to ≤1.0 W per diode at full load. | Use Scenario: Freewheeling path across inductive loads in motor drive inverters. IC Role / Device Role / Timing Role: Provides low-impedance return path for stored inductor energy during switch-off phase. Use Value: 2.0 μs trr avoids commutation failure at 20 kHz PWM; 30 A IFSM handles motor stall surge currents. |
| DC-DC Converter Output Stage | Industrial UPS Hold-Up Circuit |
Use Scenario: Secondary-side synchronous rectification replacement in isolated flyback converters. IC Role / Device Role / Timing Role: Uncontrolled rectifier converting transformer secondary AC to regulated DC output. Use Value: 1.0 μA IR ensures <1 mW standby loss in battery-backed systems; DO-41 footprint simplifies manual repair. | Use Scenario: High-voltage hold-up diode isolating backup battery from main DC bus in 48 V telecom UPS. IC Role / Device Role / Timing Role: Blocks reverse current from battery while allowing charging current flow. Use Value: 1000 V VDC rating accommodates transient overvoltage events; 175 °C TJ max enables operation near hot power modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4007GP-E3/73 | VRRM = 1000 V, IF(AV) = 1.0 A, but VF = 1.1 V and trr ≈ 30 μs - slower recovery, higher conduction loss | Not suitable for freewheeling above 1 kHz due to long trr; acceptable only in 50/60 Hz rectification | Select when cost sensitivity outweighs switching performance; verify thermal margin with higher VF |
| STTH1R06U | VRRM = 600 V, IF(AV) = 1.0 A, VF = 0.95 V, trr = 0.075 μs - faster, lower VF, but lower voltage rating | Requires redesign for ≤600 V systems; unsuitable for 1000 V applications without series stacking | Choose for high-frequency SMPS where fast recovery and low VF reduce losses, provided system voltage permits |
Compared with 1N4007GP-E3/73, the 1N3957GPHE3/73 delivers superior dynamic performance (2.0 μs vs. 30 μs trr) and lower conduction loss (1.0 V vs. 1.1 V VF), while STTH1R06U offers ultrafast recovery but sacrifices 400 V blocking headroom - making 1N3957GPHE3/73 optimal for 1000 V, moderate-speed industrial rectification.
Availability
1N3957GPHE3/73 is available at Aetrix Electronics and suitable for AC/DC power supply rectification, inverter freewheeling, and industrial UPS hold-up circuits requiring stable component supply and legacy design continuity.
Supply support for 1N3957GPHE3/73 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 supplier of discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability and ruggedized packaging.
The 1N3957GPHE3/73 belongs to Vishay's Superectifier® DO-41 rectifier family, engineered for high-voltage, high-reliability power conversion in industrial, telecom, and energy infrastructure applications.
FAQ
What is the maximum junction temperature rating for the 1N3957GPHE3/73?
The 1N3957GPHE3/73 has a maximum junction temperature (TJ max.) of +175 °C, enabling reliable operation in thermally demanding environments such as enclosed industrial power supplies or under-hood automotive auxiliary systems. This rating is validated per JEDEC conditions and supports derating curves up to 75 °C ambient with standard 0.375" lead length mounting.
Is the 1N3957GPHE3/73 RoHS-compliant?
Yes, the 1N3957GPHE3/73 is RoHS-compliant, as indicated by the "E3" suffix in its part number. It meets the material restrictions defined in Directive 2011/65/EU and satisfies JESD 201 Class 1A whisker testing requirements. The matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102 standards.
What does the "73" in 1N3957GPHE3/73 signify?
The "73" in 1N3957GPHE3/73 denotes the preferred packaging code for ammo pack delivery, containing 3000 units per pack. This differs from "54", which indicates 13" diameter paper tape and reel (5500 units). Both share identical electrical and mechanical specifications - only the packaging format varies.
How does the reverse recovery time of the 1N3957GPHE3/73 compare to standard 1N400x diodes?
The 1N3957GPHE3/73 has a typical reverse recovery time (trr) of 2.0 μs, significantly faster than standard 1N400x diodes (e.g., 1N4007: ~30 μs). This enables use in higher-frequency applications like 20–50 kHz flyback freewheeling, where slower diodes would incur excessive switching loss and overheating.
Why is the 1N3957GPHE3/73 marked "Not for New Designs"?
Vishay marks the 1N3957GPHE3/73 "Not for New Designs" because newer ultrafast or Schottky alternatives offer better efficiency in modern high-frequency power supplies. However, it remains fully supported for legacy product maintenance, repair, and industrial systems where long-term availability, proven reliability, and DO-41 through-hole compatibility are prioritized over marginal efficiency gains.
1N3957GPHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- Superectifier®
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- 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:
- 8pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -65°C ~ 175°C
1N3957GPHE3/73 FAQ
1.How can I place an order for 1N3957GPHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3957GPHE3/73 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 1N3957GPHE3/73 reliable?
The price and inventory of 1N3957GPHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3957GPHE3/73 is usually 5 days.
3.What payment methods are accepted for 1N3957GPHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3957GPHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3957GPHE3/73?
1N3957GPHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3957GPHE3/73 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 1N3957GPHE3/73?
For technical support, including 1N3957GPHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3957GPHE3/73 requirements.
6.How does Aetrix verify that 1N3957GPHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1N3957GPHE3/73 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 1N3957GPHE3/73 meets industry standards.
7.What is the process for return or replacement of 1N3957GPHE3/73?
All 1N3957GPHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N3957GPHE3/73, 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 1N3957GPHE3/73 part is unused and in its original packaging.
Return procedure for 1N3957GPHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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