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Diodes Incorporated 1N5399S-T
- Part No.:
- 1N5399S-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N5399S-T.pdf
- Description:
- DIODE GEN PURP 1KV 1.5A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:8,775
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Product details
Overview
1N5399S-T from Diodes Incorporated is a 1.5A, 1000V peak repetitive reverse voltage general-purpose silicon rectifier diode in DO-41 package, featuring 1.1V forward voltage drop at 1.5A, 50A non-repetitive surge rating, and 5.0μA reverse leakage at 25°C - used in AC/DC power supply input stages, DC motor freewheeling, and industrial power conversion.
For engineers reviewing the 1N5399S-T datasheet, 1N5399S-T pinout, 1N5399S-T application, or 1N5399S-T equivalent, key selection factors include VRRM=1000V, IO=1.5A @70°C, VF=1.1V @1.5A, IFSM=50A, and DO-41 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
This axial-lead rectifier operates in single-phase, half-wave configurations with resistive or inductive loads at 60Hz; capacitive loads require 20% current derating. Its junction-to-lead thermal resistance of 25°C/W enables efficient heat transfer to PCB copper or heatsinked leads.
The device exhibits 20pF typical junction capacitance at 1MHz/4V reverse bias and maintains stable reverse leakage (≤50μA at 100°C), supporting reliable operation in high-temperature industrial environments up to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Maximum peak reverse voltage the diode blocks without breakdown in repetitive operation. |
| IO @ TA=70°C | 1.5 A - Continuous average forward current capability when ambient temperature is 70°C with leads at ambient. |
| VF @ IF=1.5A | 1.1 V - Forward voltage drop determining conduction loss and thermal dissipation in power circuits. |
| IFSM | 50 A - Peak non-repetitive surge current tolerance for 8.3ms half-sine wave, critical for inrush protection. |
| IRM @ 25°C | 5.0 μA - Reverse leakage current at rated blocking voltage, affecting standby power and high-impedance circuit integrity. |
| RθJL | 25 °C/W - Thermal resistance from junction to lead, defining heat path efficiency to PCB copper or external heatsinking. |
| CT @ 1MHz | 20 pF - Junction capacitance influencing high-frequency switching noise and EMI in rectifier output filtering. |
Pinout & Package
DO-41 molded plastic package with axial leads; cathode identified by band marking. Lead finish is matte tin, solderable per MIL-STD-202 Method 208. Moisture sensitivity level 1 per J-STD-020C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC source or inductive load return; must withstand full surge current and thermal stress. |
| Cathode | Forward current exit / reverse voltage reference | Marked with band; ties to positive rail or filter capacitor; reverse-biased during off-state blocking. |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching recovery | Enables high-efficiency operation in 50/60Hz and low-frequency SMPS front-end rectification with minimal switching loss. |
| 50A surge rating | Withstands motor startup surges, transformer inrush, and lightning-induced transients without failure. |
| Low VF = 1.1V @ 1.5A | Reduces conduction loss to ~1.65W at full load, easing thermal design in compact power supplies. |
| DO-41 mechanical standard | Ensures drop-in replacement for legacy designs using industry-standard axial-lead footprint and lead spacing. |
| RoHS-compliant tin finish | Supports lead-free assembly processes while maintaining solder joint reliability and wetting performance. |
Applications
| AC/DC Power Supply Input Stage | DC Motor Freewheeling Protection |
|---|---|
Use Scenario: Full-wave or half-wave rectification of 115/230VAC mains in offline switch-mode power supplies. IC Role / Device Role / Timing Role: Primary rectifier converting AC input to pulsating DC before bulk capacitor filtering. Use Value: 1000V VRRM ensures margin against line surges; 1.5A IO supports >15W output power with conservative thermal design. | Use Scenario: Clamping inductive kickback from brushed DC motors in industrial actuators and HVAC blowers. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for stored coil energy during MOSFET/relay turn-off. Use Value: 50A IFSM handles motor stall currents; 1.1V VF limits clamping voltage rise and protects driving switches. |
| Industrial Control Power Rails | LED Driver Bulk Rectification |
Use Scenario: Auxiliary power generation for PLC I/O modules and sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Bridge or discrete rectifier supplying isolated 12–24V DC rails from transformer secondaries. Use Value: -65°C to +150°C operating range ensures reliability in uncontrolled cabinet environments; DO-41 allows manual rework. | Use Scenario: High-voltage AC input rectification in constant-current LED drivers for street lighting and signage. IC Role / Device Role / Timing Role: Input-stage rectifier feeding boost PFC or buck converter stage. Use Value: Low 5.0μA IRM minimizes no-load power loss; 20pF CT reduces EMI coupling into downstream analog control circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5399-B | Same electrical specs; packaged in DO-15 instead of DO-41, with larger body (5.5–7.62mm length) and higher weight (0.40g). | Requires wider PCB pad spacing and greater board area; less suitable for space-constrained layouts. | Select when DO-15 footprint is standardized across product family or when higher mechanical robustness is prioritized over size. |
| 1N5408 | Higher IO=3.0A but same VRRM=1000V; VF=1.0V @3.0A; larger DO-204AL package; RθJA=40°C/W vs 55°C/W for 1N5399S-T. | Better thermal performance and current headroom, but incompatible pin spacing and mounting hole size. | Choose for new designs needing >1.5A continuous current or improved thermal margin, accepting footprint redesign. |
Compared with 1N5399-B and 1N5408, the 1N5399S-T offers optimal balance of legacy DO-41 compatibility, 1000V blocking, and 1.5A capability in compact form-ideal for cost-sensitive, space-limited replacements where existing tooling and layout must be preserved.
Availability
1N5399S-T is available at Aetrix Electronics and suitable for AC/DC power supply input stages, DC motor freewheeling protection, and industrial control power rails requiring stable component supply and long-term obsolescence mitigation.
Supply support for 1N5399S-T 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.
The 1N539x/S series belongs to Diodes' general-purpose rectifier product line, engineered for cost-effective, thermally robust AC/DC conversion in legacy and new-design power supplies where proven reliability and wide voltage/current coverage are essential.
FAQ
What is the maximum junction temperature for the 1N5399S-T?
The 1N5399S-T has an operating junction temperature range of –65°C to +150°C, verified per datasheet DS28003 Rev. 7–4. This rating applies under specified thermal conditions with leads maintained at ambient temperature at 9.5mm from the case, enabling use in high-ambient industrial enclosures without forced cooling.
Is the 1N5399S-T RoHS compliant?
Yes, the 1N5399S-T features a lead-free, RoHS-compliant matte tin finish on its axial leads and meets EU Directive 2002/95/EC requirements per Note 3 in the datasheet, including exemptions for glass and high-temperature solder as defined in Annex Notes 5 and 7.
Can the 1N5399S-T replace the 1N5408 in existing designs?
No - although both share 1000V VRRM, the 1N5399S-T is rated for 1.5A average forward current versus 3.0A for the 1N5408, and its DO-41 package differs mechanically from the 1N5408's DO-204AL. Substitution requires validation of thermal margin and PCB footprint compatibility.
What does the "S" suffix indicate in 1N5399S-T?
The "S" suffix explicitly denotes the DO-41 package variant per Diodes Incorporated's ordering nomenclature. The "T" suffix indicates tape-and-reel packaging (5K/reel, 13-inch). Non-S variants (e.g., 1N5399-T) use the larger DO-15 package.
1N5399S-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N5399S-T FAQ
1.How can I place an order for 1N5399S-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5399S-T 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 1N5399S-T reliable?
The price and inventory of 1N5399S-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5399S-T is usually 5 days.
3.What payment methods are accepted for 1N5399S-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5399S-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5399S-T?
1N5399S-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5399S-T 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 1N5399S-T?
For technical support, including 1N5399S-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5399S-T requirements.
6.How does Aetrix verify that 1N5399S-T is sourced from the original manufacturer or authorized distributors?
All 1N5399S-T 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 1N5399S-T meets industry standards.
7.What is the process for return or replacement of 1N5399S-T?
All 1N5399S-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N5399S-T, 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 1N5399S-T part is unused and in its original packaging.
Return procedure for 1N5399S-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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