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Diodes Incorporated DL4934-13-F
- Part No.:
- DL4934-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
DL4934-13-F.pdf
- Description:
- DIODE GEN PURP 100V 1A MELF
- Quantity:
- Payment:
- Shipping:
Inventory:5,132
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Product details
Overview
DL4934-13-F from Diodes Incorporated is a 100 V peak repetitive reverse voltage, surface-mount fast recovery rectifier in MELF package, rated for 1.0 A average forward current at 75°C terminal temperature, with 1.2 V max forward voltage at 1.0 A and 200 ns reverse recovery time-used in AC/DC input stage rectification for compact power supplies.
For engineers reviewing the DL4934-13-F datasheet, DL4934-13-F pinout, DL4934-13-F application, or DL4934-13-F equivalent, key selection criteria include reverse voltage margin, thermal derating behavior, fast recovery performance under 60 Hz line-frequency switching, and MELF package solderability per MIL-STD-202.
Technical Context
This device operates as a single-phase, half-wave rectifier for 60 Hz resistive or inductive loads; capacitive loads require 20% forward current derating. Its glass-passivated junction ensures low leakage (5.0 µA max IRM) and stable operation across –65°C to +150°C junction temperature range.
The 200 ns reverse recovery time (measured at IF = 1.0 A, VR = 30 V, di/dt = 50 A/µs) supports moderate-speed switching while minimizing commutation loss; typical total capacitance is 15 pF at 1.0 MHz and 4.0 V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse blocking capability, suitable for 70 V RMS AC inputs with safety margin |
| IO @ TT = 75°C | 1.0 A - continuous DC output current rating under defined heatsinking condition |
| VFM @ IF = 1.0 A | 1.2 V - forward conduction loss directly impacts efficiency and thermal rise in linear rectifier stages |
| trr | 200 ns - enables use in non-resonant 60 Hz rectification without excessive switching loss or EMI |
| IRM @ VR | 5.0 µA - low leakage preserves hold-up capacitor charge in standby and light-load conditions |
| CT @ 1 MHz, 4 V | 15 pF - minimal junction capacitance avoids high-frequency coupling in adjacent signal paths |
Pinout & Package
MELF (Metal Electrode Leadless Face) cylindrical surface-mount package with axial cathode band marking; no leads, soldered at both ends; UL 94V-0 rated molded plastic case; 0.25 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | AC input connection point | Accepts incoming alternating waveform; polarity determines conduction direction in half-wave topology |
| Cathode | DC output connection point | Delivers rectified unidirectional current; marked by visible cathode band on MELF body |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability and low IRM drift over temperature and time |
| Fast recovery (200 ns) | Reduces reverse recovery charge (Qrr) and associated turn-off losses in line-frequency applications |
| RoHS-compliant matte tin finish | Supports lead-free reflow soldering per JEDEC J-STD-020 without whisker risk or intermetallic degradation |
| MELF package thermal mass | Provides higher surge current handling (30 A IFSM) than comparable SMD diodes due to cylindrical geometry |
Applications
| AC/DC Adapter Input Stage | Industrial Control Power Supply |
|---|---|
Use Scenario: Rectifying 120 VAC mains input in wall-wart adapters with space-constrained PCB layout. IC Role / Device Role / Timing Role: Half-wave rectifier converting AC to pulsating DC prior to bulk capacitance and linear regulation. Use Value: 100 V VRRM provides 43% margin above 70 V RMS input; MELF footprint minimizes board area vs. DO-41. | Use Scenario: Providing auxiliary 5 V/12 V bias rails in PLC I/O modules operating in ambient up to 70°C. IC Role / Device Role / Timing Role: Primary-side rectifier in isolated flyback-derived auxiliary supply. Use Value: 150°C max Tj rating ensures reliability under sustained industrial ambient; low VFM reduces self-heating at full load. |
| LED Driver Auxiliary Supply | Appliance Motor Control Board |
Use Scenario: Generating low-power logic supply from AC line in smart LED bulb drivers. IC Role / Device Role / Timing Role: Non-isolated half-wave rectifier feeding linear regulator for MCU and driver IC bias. Use Value: 200 ns trr prevents excessive ringing during zero-crossing transitions; 15 pF CT avoids noise coupling into sensitive analog dimming circuits. | Use Scenario: Rectifying feedback winding output in universal motor speed control circuits. IC Role / Device Role / Timing Role: Secondary-side rectifier delivering gate drive or sensing bias in TRIAC/SCR-based phase-control designs. Use Value: 30 A IFSM withstands inrush surges from motor startup transients; cathode-band polarity ensures correct orientation in automated placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR110E | TO-220AC package, 100 V VRRM, 1.0 A IO, 75 ns trr, higher thermal mass but larger footprint | Preferred where heatsinking is available and board space less constrained | Select when higher surge robustness and lower trr are prioritized over size and cost |
| Vishay ES1J | SMA package, 600 V VRRM, 1.0 A IO, 35 ns trr, smaller footprint but lower voltage rating margin for 120 VAC | Better suited for high-voltage flyback snubber or PFC boost diode roles | Choose only if system requires >300 V blocking or ultra-fast recovery in same current class |
Compared with MUR110E and ES1J, DL4934-13-F uniquely balances MELF's compact size and thermal surge capacity with 100 V rating optimized for North American 120 VAC input stages-making it ideal where board area, manufacturability, and line-frequency recovery performance intersect.
Availability
DL4934-13-F is available at Aetrix Electronics and suitable for AC/DC adapter input stages, industrial control power supplies, LED driver auxiliary supplies, and appliance motor control boards requiring stable component supply and RoHS-compliant MELF packaging.
Supply support for DL4934-13-F 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 devices for industrial, computing, and consumer markets.
The DL4933–DL4937 series targets cost-sensitive, space-constrained AC/DC front-end rectification-designed for robust performance in line-frequency applications with emphasis on thermal stability and manufacturable MELF packaging.
FAQ
What is the maximum allowable junction temperature for DL4934-13-F?
The absolute maximum junction temperature is +150°C, with storage temperature matching this range. Derating begins at terminal temperature >75°C per Figure 2; sustained operation above 125°C requires verified thermal design including PCB copper area and airflow.
Can DL4934-13-F be used in full-wave bridge configurations?
No-it is a single-diode device intended for half-wave rectification. Full-wave operation requires four discrete diodes or a dedicated bridge rectifier IC; using DL4934-13-F in bridge topology would violate polarity and thermal distribution requirements.
Is the "-F" suffix mandatory for RoHS compliance?
Yes-the "-F" suffix explicitly denotes the matte tin lead-free finish compliant with EU Directive 2002/95/EC (RoHS) and exemptions per Annex Notes 5 and 7. Standard DL4934-13 uses leaded plating and is not RoHS-compliant.
How does the MELF package affect solder joint reliability?
MELF's cylindrical geometry and dual-end soldering provide superior mechanical strength and thermal cycling endurance versus gull-wing or J-lead packages. It meets MIL-STD-202 Method 208 for solderability and shows <0.5% defect rate in automated reflow processes with controlled ramp rates.
DL4934-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 200 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MELF
- Operating Temperature - Junction:
- -65°C ~ 150°C
DL4934-13-F FAQ
1.How can I place an order for DL4934-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DL4934-13-F 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 DL4934-13-F reliable?
The price and inventory of DL4934-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DL4934-13-F is usually 5 days.
3.What payment methods are accepted for DL4934-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DL4934-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DL4934-13-F?
DL4934-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DL4934-13-F 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 DL4934-13-F?
For technical support, including DL4934-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DL4934-13-F requirements.
6.How does Aetrix verify that DL4934-13-F is sourced from the original manufacturer or authorized distributors?
All DL4934-13-F 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 DL4934-13-F meets industry standards.
7.What is the process for return or replacement of DL4934-13-F?
All DL4934-13-F units undergo pre-shipment inspection (PSI). If there is an issue with DL4934-13-F, 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 DL4934-13-F part is unused and in its original packaging.
Return procedure for DL4934-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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