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Diodes Incorporated DL4001-13
- Part No.:
- DL4001-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
DL4001-13.pdf
- Description:
- DIODE GEN PURP 50V 1A MELF
- Quantity:
- Payment:
- Shipping:
Inventory:6,627
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Product details
Overview
DL4001-13 from Diodes Incorporated is a glass passivated surface-mount silicon rectifier diode rated for 1.0A average forward current, 50V peak repetitive reverse voltage (VRRM), and 1.1V maximum forward voltage at 1.0A. It features low leakage (5.0µA at 25°C), MELF package with UL 94V-0 flammability rating, and is used in AC/DC input stage rectification for compact power supplies and LED drivers.
For engineers reviewing the DL4001-13 datasheet, DL4001-13 pinout, DL4001-13 application, or DL4001-13 equivalent, key selection criteria include VRRM margin for line surge, thermal resistance (50K/W) for board-level derating, junction capacitance (15pF) in high-frequency filtering, and MELF mounting compatibility with automated placement systems.
Technical Context
This device operates as a single-phase, half-wave rectifier under resistive or inductive loads at 60Hz. Its glass passivation ensures stable reverse characteristics across -55°C to +150°C operating range and supports reliable operation in automotive and industrial environments where humidity and thermal cycling are present.
The MELF (Metal Electrode Leadless Face) construction provides uniform thermal dissipation and mechanical robustness without leads, while the cathode band polarity marking enables unambiguous orientation during automated assembly. Junction capacitance of 15pF at 4V reverse bias supports predictable EMI behavior in switching front-end designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse voltage before breakdown; sets minimum insulation margin for 24–36V AC input stages |
| IO @ TT=75°C | 1.0 A - Continuous DC output current capability when terminal temperature is held at 75°C; defines usable load capacity in convection-cooled PCB layouts |
| VF @ IF=1.0A | 1.1 V - Forward voltage drop determining conduction loss (1.1W at full load); impacts thermal design and efficiency in low-voltage outputs |
| IR @ VR=50V, 25°C | 5.0 µA - Reverse leakage current affecting standby power and high-impedance sensing accuracy in battery-backed circuits |
| RJA | 50 K/W - Junction-to-ambient thermal resistance; used to calculate temperature rise (ΔT = Pd × RJA) for layout thermal validation |
| Cj @ VR=4V | 15 pF - Junction capacitance influencing high-frequency noise coupling and snubber design in flyback or buck-derived topologies |
Pinout & Package
MELF (Metal Electrode Leadless Face) cylindrical surface-mount package with axial cathode band marking; no discrete pins - terminals are metallized end caps soldered directly to PCB pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (End Cap) | Forward current entry point | Soldered to AC input or transformer secondary side; requires adequate pad area for thermal relief and current handling |
| Cathode (End Cap with Band) | Forward current exit / reverse blocking node | Connected to bulk capacitor positive rail; band orientation must match silkscreen for automated optical inspection (AOI) compliance |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable IR ≤ 5.0µA up to 100°C ambient and prevents moisture-induced parameter drift in humid environments |
| UL 94V-0 plastic case | Meets flame-retardant safety requirements for Class II power supplies and medical auxiliary circuits without additional potting |
| 1.0A average forward current rating | Supports continuous operation in 5–12V output SMPS front ends with ≥20% margin over typical 0.8A nominal loads |
| 30A non-repetitive surge rating (8.3ms) | Withstands inrush currents from cold-start capacitors up to 470µF in 24V input systems without degradation |
Applications
| AC/DC Adapter Input Stage | Industrial Sensor Power Supply |
|---|---|
Use Scenario: Rectifying 24VAC transformer output in wall-mounted adapters for IoT gateways. IC Role / Device Role / Timing Role: Primary-side silicon rectifier converting AC to pulsating DC prior to bulk capacitor filtering. Use Value: 1.1V VF minimizes conduction loss at 1A, enabling >85% efficiency in compact 25mm² PCB footprints. | Use Scenario: Providing isolated 12V DC bias for 4–20mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Bridgeless half-wave rectifier in ultra-low-power auxiliary supply with minimal BOM count. Use Value: 5.0µA IR ensures <1µW standby dissipation, preserving battery life in wireless sensor nodes. |
| LED Driver Front-End | Automotive Body Control Module |
Use Scenario: Rectifying 12VAC from vehicle alternator-fed lighting circuits in aftermarket LED retrofit modules. IC Role / Device Role / Timing Role: Input-stage rectifier handling intermittent surges and wide ambient temperature swings (-40°C to +125°C). Use Value: MELF package withstands vibration and thermal shock; 150°C max junction temperature supports under-hood deployment. | Use Scenario: Converting 14VAC ripple from brushed motor feedback signals into clean DC for microcontroller ADC reference. IC Role / Device Role / Timing Role: Signal-level rectifier conditioning analog tachometer waveforms before digitization. Use Value: 15pF Cj limits high-frequency noise coupling into sensitive analog domains without external RC filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4001G-TP (Micro Commercial) | Same VRRM (50V), VF = 1.1V, but DO-41 through-hole package and higher RJA (~65K/W) | Requires wave soldering or hand assembly; unsuitable for high-density SMT lines | Select only if legacy through-hole compatibility or manual repair is required |
| ES1J (ON Semiconductor) | Higher VRRM (600V), lower VF (0.95V), SMA package, 35K/W RJA | Over-specified for 24–36V systems; better suited for universal-input offline converters | Choose when future-proofing for higher line voltages or tighter thermal constraints |
Compared with DL4001-13, 1N4001G-TP trades SMT compatibility for ease of prototyping, while ES1J offers superior thermal performance and voltage headroom at the cost of unnecessary rating overhead in low-voltage rectification.
Availability
DL4001-13 is available at Aetrix Electronics and suitable for AC/DC adapter input stages, industrial sensor power supplies, and LED driver front-ends requiring stable component supply and long-term manufacturing continuity.
Supply support for DL4001-13 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management and signal integrity solutions for industrial, automotive, and consumer markets.
The DL4001–DL4007 series targets cost-sensitive, space-constrained rectification needs in surface-mount power conversion, emphasizing thermal stability, low leakage, and MELF ruggedness over legacy leaded packages.
FAQ
What is the maximum allowable junction temperature for DL4001-13?
The absolute maximum junction temperature is +150°C, as specified in the DS16001 datasheet. Operation above this limit risks permanent degradation of the glass passivation layer and increased reverse leakage. Derating curves show usable current drops to zero at 150°C ambient when mounted on standard FR-4 with no copper pour.
Can DL4001-13 be used in full-wave bridge configurations?
No - DL4001-13 is a single diode with anode and cathode terminals only. A full-wave bridge requires four diodes arranged in a specific topology. While four DL4001-13 units can be manually assembled into a discrete bridge, dedicated bridge rectifiers (e.g., DB101) offer optimized thermal coupling and smaller footprint.
Is the MELF package compatible with standard reflow profiles?
Yes - the MELF package is qualified for lead-free reflow per J-STD-020. Peak temperature must not exceed 260°C for ≤10 seconds, and ramp rates should stay within 3°C/s. The glass passivation remains intact under these conditions, and the UL 94V-0 body resists charring.
How does forward voltage vary with temperature?
VF decreases by approximately 2mV/°C as junction temperature rises, per the typical forward characteristic curve (Fig. 2). At 100°C junction, VF drops to ~0.95V at 1.0A - improving conduction efficiency but requiring verification of minimum hold-up voltage in regulated outputs.
DL4001-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MELF
- Operating Temperature - Junction:
- -55°C ~ 150°C
DL4001-13 FAQ
1.How can I place an order for DL4001-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DL4001-13 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 DL4001-13 reliable?
The price and inventory of DL4001-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DL4001-13 is usually 5 days.
3.What payment methods are accepted for DL4001-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DL4001-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DL4001-13?
DL4001-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DL4001-13 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 DL4001-13?
For technical support, including DL4001-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DL4001-13 requirements.
6.How does Aetrix verify that DL4001-13 is sourced from the original manufacturer or authorized distributors?
All DL4001-13 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 DL4001-13 meets industry standards.
7.What is the process for return or replacement of DL4001-13?
All DL4001-13 units undergo pre-shipment inspection (PSI). If there is an issue with DL4001-13, 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 DL4001-13 part is unused and in its original packaging.
Return procedure for DL4001-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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