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Diodes Incorporated 1N5397-T
- Part No.:
- 1N5397-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
1N5397-T.pdf
- Description:
- DIODE GEN PURP 600V 1.5A DO15
- Quantity:
- Payment:
- Shipping:
Inventory:3,155
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Product details
Overview
1N5397-T from Diodes Incorporated is a 1.5A general-purpose silicon rectifier diode in DO-15 package, rated for 600V peak repetitive reverse voltage (VRRM), 1.1V forward voltage drop at 1.5A, and 50A non-repetitive surge current capability-used in AC/DC power supply input stages, DC motor freewheeling, and industrial control rectification.
For engineers reviewing the 1N5397-T datasheet, 1N5397-T pinout, 1N5397-T application, or 1N5397-T equivalent, key selection criteria include VRRM derating for capacitive loads, thermal resistance (RθJA = 55°C/W), forward voltage consistency at 1.5A, and DO-15 mechanical compatibility with through-hole PCB layouts.
Technical Context
This axial-lead rectifier operates in single-phase, half-wave configurations with resistive or inductive loads at 60Hz. It exhibits low reverse leakage (5.0μA at 25°C, 50μA at 100°C) and typical junction-to-ambient thermal resistance of 55°C/W under standard mounting conditions.
Its fast switching behavior supports high-efficiency operation in offline power supplies, while the molded plastic DO-15 case meets UL 94V-0 flammability rating and RoHS-compliant tin-plated terminals ensure reliable solderability per MIL-STD-202, Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum peak reverse voltage before breakdown; defines safe operating limit in bridge or half-wave rectifier inputs. |
| IF(AV) | 1.5 A @ TA = 70°C - Average forward current rating; requires derating above ambient temperature per Fig.1. |
| VFM | 1.1 V @ IF = 1.5A - Forward voltage drop directly impacts conduction loss and thermal rise in power stage. |
| IFSM | 50 A (8.3ms half-sine) - Surge withstand capability for inrush or fault transients without failure. |
| IRM | 5.0 μA @ 25°C - Low reverse leakage preserves efficiency in high-impedance hold-up or sensing circuits. |
| RθJA | 55 °C/W - Junction-to-ambient thermal resistance determines required heatsinking or board copper area for thermal management. |
| CT | 20 pF @ 1 MHz, 4V reverse - Capacitance affects high-frequency noise coupling and EMI filter design. |
Pinout & Package
Package: DO-15 molded plastic case with cathode band marking; axial leads, RoHS-compliant tin finish, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC source or inductive load return; polarity must align with cathode band orientation. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to positive rail in rectifier output; reverse voltage applied here during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching recovery | Enables efficient operation in 50/60Hz and higher-frequency line-frequency rectifiers without excessive switching loss. |
| 50A surge rating | Withstands capacitor-charging inrush and motor startup surges without degradation in industrial power supplies. |
| Low 1.1V VF at 1.5A | Reduces conduction loss to ~1.65W at full rated current, easing thermal design in compact enclosures. |
| DO-15 mechanical standardization | Ensures compatibility with legacy through-hole tooling, wave solder fixtures, and IPC-7351B land patterns. |
Applications
| AC/DC Power Supply Input Stage | DC Motor Freewheeling Protection |
|---|---|
Use Scenario: Rectifying 120/230VAC mains into unregulated DC bus for SMPS front-end or linear regulator input. IC Role / Device Role / Timing Role: General-purpose rectifier conducting during positive half-cycles; blocks reverse voltage during negative half-cycles. Use Value: 600V VRRM provides 2× safety margin over 230VAC RMS, and 1.5A rating supports up to 18W output at 12V with margin. | Use Scenario: Suppressing inductive kickback across brushed DC motor windings during PWM turn-off. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for stored magnetic energy decay. Use Value: 50A IFSM handles motor stall currents; 1.1V VF limits clamping voltage and reduces dissipation during flyback events. |
| Industrial Control Rectification | Capacitor-Input Filter Stage |
Use Scenario: Converting transformer secondary AC to DC for PLC I/O modules, relay drivers, or sensor excitation rails. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier in ruggedized 24V or 48V auxiliary power domains. Use Value: DO-15 mechanical robustness and -65°C to +150°C operating range support wide-temperature industrial deployment. | Use Scenario: Charging bulk electrolytic capacitors after transformer secondary in linear power supplies. IC Role / Device Role / Timing Role: Rectifier subjected to high peak currents during capacitor charging pulses. Use Value: 50A surge rating accommodates repeated capacitor-charging peaks without parameter shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5397S-T | Same electrical specs; DO-41 package (smaller body, shorter leads) | Preferred for space-constrained boards or automated insertion requiring tighter lead spacing | Select when footprint or lead pitch compatibility with DO-41 tooling is required |
| 1N4007-T | 1A rating, 1000V VRRM, higher VF (~1.2V), same DO-15 package | Better suited for higher-voltage, lower-current applications where surge tolerance is less critical | Choose only if 600V rating is excessive and 1A average current suffices |
Compared with 1N5397S-T, the 1N5397-T offers identical electrical performance in a DO-15 form factor better suited for manual assembly and higher-power thermal dissipation; versus 1N4007-T, it delivers 50% higher current capacity at lower forward voltage but with reduced voltage margin.
Availability
1N5397-T is available at Aetrix Electronics and suitable for AC/DC power supply input stages, DC motor freewheeling protection, and industrial control rectification requiring stable component supply and long-term manufacturing continuity.
Supply support for 1N5397-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.
The 1N539x series belongs to Diodes' general-purpose rectifier product line, engineered for cost-effective, thermally robust AC/DC conversion in industrial, consumer, and computing power systems.
FAQ
Is 1N5397-T suitable for capacitor-input filter applications?
Yes, but with 20% average current derating per datasheet Note: its 1.5A rating applies to resistive/inductive loads; for capacitor-input filters, maximum continuous current should be limited to 1.2A to maintain reliability under peak charging stress.
What is the cathode identification method on 1N5397-T?
The cathode is marked by a distinct opaque white or black band near one lead end; this band aligns with the cathode symbol in schematic symbols and must connect toward the positive output rail in rectifier configurations.
Can 1N5397-T replace 1N4007 in existing designs?
Only if the design requires ≥1.5A average current and operates below 600V reverse voltage; substituting 1N5397-T for 1N4007 increases current capacity but reduces reverse voltage margin from 1000V to 600V-verify worst-case transient voltage compliance.
Does 1N5397-T meet lead-free and RoHS requirements?
Yes, it features a lead-free finish and complies with RoHS Directive 2002/95/EC (as revised March 2003), including exemptions for glass and high-melting-point solder per EU Annex Notes 5 and 7.
1N5397-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 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 @ 600 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N5397-T FAQ
1.How can I place an order for 1N5397-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5397-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 1N5397-T reliable?
The price and inventory of 1N5397-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5397-T is usually 5 days.
3.What payment methods are accepted for 1N5397-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5397-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5397-T?
1N5397-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5397-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 1N5397-T?
For technical support, including 1N5397-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5397-T requirements.
6.How does Aetrix verify that 1N5397-T is sourced from the original manufacturer or authorized distributors?
All 1N5397-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 1N5397-T meets industry standards.
7.What is the process for return or replacement of 1N5397-T?
All 1N5397-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N5397-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 1N5397-T part is unused and in its original packaging.
Return procedure for 1N5397-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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