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Diodes Incorporated 1N5819M-13
- Part No.:
- 1N5819M-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N5819M-13.pdf
- Description:
- DIODE SCHOTTKY 40V 1A MELF
- Quantity:
- Payment:
- Shipping:
Inventory:6,904
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Product details
Overview
1N5819M-13 from Diodes Incorporated is a 40 V, 1.0 A surface-mount Schottky barrier rectifier in MELF glass package, featuring 0.600 V forward voltage at 1.0 A, 25 A non-repetitive surge capability, and guard-ring protection for transient immunity-used in DC-DC converter output stages and low-voltage AC/DC adapters.
For engineers reviewing the 1N5819M-13 datasheet, 1N5819M-13 pinout, 1N5819M-13 application, or 1N5819M-13 equivalent, key selection criteria include reverse voltage rating, forward voltage drop at rated current, thermal resistance, surge current tolerance, and MELF package compatibility with reflow and high-reliability mounting requirements.
Technical Context
This Schottky rectifier uses a platinum-silicon metal-semiconductor junction to achieve low forward voltage and fast switching with no minority-carrier storage delay. Its guard ring structure suppresses edge breakdown under transient overvoltage conditions.
The MELF glass package provides hermetic sealing, high thermal stability (−60°C to +125°C operating range), and solderable terminals compliant with MIL-STD-202 Method 208-enabling use in aerospace-grade power supplies and industrial control systems where moisture resistance and long-term parameter stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before avalanche conduction; sets upper limit for DC blocking in 24 V system outputs. |
| IF(AV) | 1.0 A @ TT = 90°C - Continuous average forward current derated above ambient; defines usable output current in compact SMT layouts. |
| VF | 0.600 V @ IF = 1.0 A - Low conduction loss improves efficiency in 3.3–5 V buck converter outputs. |
| IFSM | 25 A - Peak half-cycle surge withstand without failure; supports inrush current handling in offline SMPS inputs. |
| RJA | 130 K/W - Junction-to-ambient thermal resistance; requires minimal PCB copper area for thermal management in sealed enclosures. |
| CJ | 110 pF @ VR = 4 V - Low junction capacitance minimizes switching noise and EMI in high-frequency rectification (>100 kHz). |
Pinout & Package
Two-terminal device in MELF (Metal Electrode Leadless Face) glass package: cylindrical body with axial cathode band marking; no discrete pins-terminals formed by metallized ends of glass envelope.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in synchronous buck); polarity must align with layout to avoid reverse bias failure. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to output rail or ground return path; determines direction of unidirectional conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF Schottky junction | 0.600 V @ 1.0 A reduces conduction loss by ~40% vs. standard silicon rectifiers in 5 V output rails. |
| Guard ring protection | Suppresses edge breakdown during line transients, enabling reliable operation in unfiltered 24 V industrial inputs. |
| MELF glass construction | Hermetic seal and coefficient-of-expansion match with PCB laminate prevent moisture ingress and thermal cycling fatigue. |
| Surface-mount packaging | Compatible with standard reflow profiles (peak ≤ 260°C); eliminates through-hole assembly cost and footprint penalty. |
Applications
| DC-DC Converter Output Rectification | Industrial AC/DC Adapter |
|---|---|
Use Scenario: Secondary-side rectification in 5 V/1 A isolated flyback converters powering PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current steering diode converting transformer AC output to regulated DC; no timing function. Use Value: 0.600 V VF minimizes power loss (0.6 W vs. 1.1 W for 1N4007), improving thermal margin in confined enclosures. | Use Scenario: Input bridge replacement in 24 V/0.8 A wall-mounted adapter for factory sensors. IC Role / Device Role / Timing Role: Half-wave rectifier in capacitive-input filter stage; operates at 50/60 Hz line frequency. Use Value: 40 V VRRM safely handles 34 V peak line voltage with 20% margin; MELF package resists humidity-induced leakage drift. |
| Automotive Body Control Module | Medical Portable Device Power Supply |
Use Scenario: Reverse polarity protection and load dump clamping in 12 V BCM power input stage. IC Role / Device Role / Timing Role: Bidirectional transient suppressor via guard ring + forward conduction path; not a timing device. Use Value: 25 A IFSM withstands ISO 7637-2 Pulse 5a load dump events; −60°C to +125°C rating covers under-hood temperature extremes. | Use Scenario: Output rectification in battery-charged 3.3 V SMPS for handheld ultrasound probe. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode in synchronous buck regulator; zero recovery time prevents shoot-through. Use Value: 110 pF CJ limits high-frequency ringing during 500 kHz switching; glass package ensures long-term reliability in sterilizable enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB140-E3/54 (Vishay) | Same 40 V VRRM, but TO-277 package (SMA-like) and 0.55 V VF @ 1 A; higher RJA (150 K/W). | Requires larger PCB pad area; less suitable for ultra-compact MELF-optimized layouts. | Prefer when board space allows SMA footprint and lower VF is prioritized over thermal density. |
| SS14 (ON Semiconductor) | 40 V VRRM, 1 A rating, but DO-214AC (SMA) package and 0.5 V VF @ 1 A; no guard ring. | Lacks transient edge protection; unsuitable for unfiltered automotive or industrial inputs. | Select only in benign, filtered environments where surge immunity is not required. |
Compared with SB140-E3/54 and SS14, the 1N5819M-13 delivers superior thermal density (130 K/W) and transient robustness (guard ring) in the smallest footprint (MELF), making it optimal for space-constrained, high-reliability power conversion where both efficiency and ruggedness are mandatory.
Availability
1N5819M-13 is available at Aetrix Electronics and suitable for DC-DC converter output rectification, industrial AC/DC adapters, automotive body control modules, and medical portable device power supplies requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for 1N5819M-13 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal devices for power management, signal integrity, and connectivity applications.
The 1N5819M-13 belongs to Diodes' high-reliability Schottky rectifier product line, engineered for demanding power conversion roles in automotive, industrial, and medical systems where low VF, surge resilience, and hermetic packaging are essential.
FAQ
What is the maximum junction temperature for continuous operation of the 1N5819M-13?
The 1N5819M-13 has a maximum junction temperature of +125°C and is rated for continuous operation up to this limit when mounted on a PCB with adequate copper area. Derating begins at terminal temperatures above 90°C per the forward current derating curve (Fig. 1), requiring thermal design that maintains TJ ≤ 125°C under worst-case load and ambient conditions.
Can the 1N5819M-13 be used in place of a 1N4007 in a 24 V AC/DC adapter?
No-the 1N5819M-13 is a Schottky rectifier with 40 V VRRM and no reverse recovery charge, while the 1N4007 is a silicon PN rectifier rated for 1000 V. Substituting it in a 24 V AC/DC adapter risks catastrophic failure due to insufficient reverse voltage margin if peak line voltage exceeds 40 V; use only where VRRM ≥ 1.5× peak input voltage.
Is the MELF package of the 1N5819M-13 compatible with automated optical inspection (AOI)?
Yes-the cylindrical MELF package features consistent geometry, high-contrast cathode band, and uniform reflectivity, enabling reliable detection by standard AOI systems calibrated for glass-body components. Its lack of leads eliminates shadowing issues common with gull-wing packages, improving solder-joint defect detection accuracy.
Does the guard ring in the 1N5819M-13 provide ESD protection?
No-the guard ring is designed solely to suppress edge breakdown during high dv/dt transients (e.g., load dump, inductive kickback), not human-body-model (HBM) or charged-device-model (CDM) ESD events. For ESD-sensitive circuits, external TVS diodes or dedicated ESD protection devices must be used upstream of the 1N5819M-13.
1N5819M-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 600 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MELF
- Operating Temperature - Junction:
- -
1N5819M-13 FAQ
1.How can I place an order for 1N5819M-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5819M-13 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 1N5819M-13 reliable?
The price and inventory of 1N5819M-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5819M-13 is usually 5 days.
3.What payment methods are accepted for 1N5819M-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5819M-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5819M-13?
1N5819M-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5819M-13 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 1N5819M-13?
For technical support, including 1N5819M-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5819M-13 requirements.
6.How does Aetrix verify that 1N5819M-13 is sourced from the original manufacturer or authorized distributors?
All 1N5819M-13 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 1N5819M-13 meets industry standards.
7.What is the process for return or replacement of 1N5819M-13?
All 1N5819M-13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5819M-13, 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 1N5819M-13 part is unused and in its original packaging.
Return procedure for 1N5819M-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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