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Diodes Incorporated LLSD101A-13
- Part No.:
- LLSD101A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
LLSD101A-13.pdf
- Description:
- DIODE SCHOTT 60V 15MA MINI MELF
- Quantity:
- Payment:
- Shipping:
Inventory:3,392
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Product details
Overview
LLSD101A-13 from Diodes Incorporated is a surface-mount Schottky barrier diode in MiniMELF glass package, rated for 60 V peak repetitive reverse voltage, 15 mA forward continuous current, and 0.41 V typical forward voltage at 1.0 mA. It delivers fast 1.0 ns reverse recovery time and low 2.0 pF junction capacitance, enabling use in high-frequency signal demodulation and low-power detector circuits.
For engineers reviewing the LLSD101A-13 datasheet, LLSD101A-13 pinout, LLSD101A-13 application, or LLSD101A-13 equivalent, key selection criteria include its cathode-band polarity marking, Sn97.5Ag2.5 terminal finish, UL 94V-0 flammability rating, moisture sensitivity level 1, and compatibility with MIL-STD-202 soldering methods.
Technical Context
This Schottky diode employs guard ring construction to enhance transient voltage immunity and suppress leakage-induced noise in sensitive RF front-end stages. Its low forward voltage drop and nanosecond-scale reverse recovery support efficient signal rectification in battery-powered instrumentation and low-voltage logic-level clamping.
The device operates across –55 °C to +125 °C junction temperature range and exhibits stable reverse current ≤200 nA at VR = 50 V, making it suitable for precision analog sensing nodes where dark-current drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum non-repetitive reverse voltage before breakdown; sets upper limit for signal swing in clamp/detector applications |
| VF @ 1.0 mA | 0.41 V - Low conduction loss enables operation from sub-1V supplies without significant voltage sag |
| trr | 1.0 ns - Enables reliable detection of >300 MHz RF signals without phase distortion or pulse rounding |
| CT @ 0 V | 2.0 pF - Minimal capacitive loading preserves Q-factor in tuned LC tank circuits |
| IR @ 50 V | 200 nA - Ultra-low leakage maintains accuracy in high-impedance bias networks and sample-hold circuits |
| Pd | 400 mW - Sufficient power handling for intermittent 15 mA pulses without thermal derating on FR-4 |
| RJA | 375 °C/W - Thermal resistance consistent with glass MiniMELF geometry; requires no heatsinking below 100 mW dissipation |
Pinout & Package
MiniMELF glass package (3.3–3.7 mm length × 1.3–1.6 mm diameter) with axial cathode band marking; two-terminal device with no internal leads or substrate connections.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node in rectifier/clamp; unmarked end of glass body |
| Cathode | Forward current exit / reverse blocking terminal | Identified by visible black cathode band; tied to higher-potential or ground-referenced node |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Improves ESD robustness and suppresses edge leakage in high-impedance detector paths |
| Sn97.5Ag2.5 terminal finish | Enables reliable reflow soldering per MIL-STD-202 Method 208 without intermetallic degradation |
| UL 94V-0 flammability rating | Meets safety requirements for enclosed consumer and industrial enclosures without flame propagation risk |
| Moisture Sensitivity Level 1 | Eliminates bake-out requirement prior to assembly; supports standard SMT line flow |
Applications
| RF Signal Detector | Low-Voltage Logic Clamp |
|---|---|
Use Scenario: Demodulating AM/FM broadcast signals in portable radios and IoT sensor transceivers. IC Role / Device Role / Timing Role: Passive envelope detector converting RF carrier amplitude into baseband DC/low-frequency output. Use Value: 1.0 ns trr and 2.0 pF CT preserve signal fidelity up to 400 MHz; 0.41 V VF ensures usable output even with 0.8 V supply rails. | Use Scenario: Protecting GPIO pins of ultra-low-power microcontrollers against overvoltage transients. IC Role / Device Role / Timing Role: Bidirectional clamping diode limiting input voltage to VDD + 0.4 V and VSS − 0.4 V. Use Value: Sub-0.5 V VF prevents false triggering during 1.2 V logic transitions; glass package withstands >8 kV HBM ESD events. |
| Precision Current Sense Shunt | High-Frequency Oscillator Tuning |
Use Scenario: Biasing photodiode amplifiers in optical smoke detectors and ambient light sensors. IC Role / Device Role / Timing Role: Reverse-biased leakage reference element establishing stable virtual ground in transimpedance amplifier feedback path. Use Value: 200 nA IR at 50 V ensures <0.1% gain error in 10 MΩ feedback networks; –55 °C to +125 °C operation covers full industrial range. | Use Scenario: Variable capacitance tuning in VCOs for ISM-band wireless modules (e.g., 2.4 GHz Bluetooth LE). IC Role / Device Role / Timing Role: Voltage-variable capacitor (varicap) exploiting junction capacitance variation with reverse bias. Use Value: 2.0–2.2 pF CT range with <10% voltage coefficient enables ±5% frequency trim; MiniMELF mechanical stability minimizes microphonics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SD101AW-7 | Same MiniMELF package; VF = 0.42 V @ 1 mA; VRRM = 60 V; RoHS-compliant SnAgCu finish | Optimized for automated placement with enhanced tape-edge registration; identical electrical specs | Select SD101AW-7 for new designs requiring long-term supply continuity and updated process control |
| BAT54C-7-F | SOT-23 package; dual common-cathode configuration; VF = 0.33 V @ 10 mA; VRRM = 30 V | Higher current capability but lower voltage rating; unsuitable for >40 V signal environments | Choose BAT54C-7-F only when board space permits SOT-23 and system voltage remains ≤25 V |
Compared with LLSD101A-13, SD101AW-7 offers identical performance with improved manufacturability and lifecycle support, while BAT54C-7-F trades voltage headroom for higher current and dual-diode integration-neither is pin-compatible due to differing packages and terminal counts.
Availability
LLSD101A-13 is available at Aetrix Electronics and suitable for RF detector circuits, low-voltage logic protection, precision current-sense biasing, and VCO tuning networks requiring stable component supply and traceable sourcing.
Supply support for LLSD101A-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-efficiency power management, signal integrity, and protection solutions for industrial, computing, and communications markets.
The LLSD101A series belongs to Diodes' legacy MiniMELF Schottky portfolio, designed specifically for high-frequency, low-leakage signal conditioning in space-constrained analog front-ends where glass-package reliability and thermal stability are critical.
FAQ
Is LLSD101A-13 suitable for reflow soldering?
Yes. The Sn97.5Ag2.5 terminal finish meets MIL-STD-202 Method 208 solderability requirements and is qualified for lead-free reflow profiles up to 260 °C peak temperature. No pre-bake is needed due to Moisture Sensitivity Level 1 rating.
What is the maximum reverse voltage this diode can sustain continuously?
The LLSD101A-13 has a peak repetitive reverse voltage (VRRM) rating of 60 V. Continuous DC blocking voltage (VR) is also 60 V per datasheet Table 1, verified under standard test conditions at TA = 25 °C with recommended FR-4 pad layout.
Does the cathode band indicate polarity for both forward and reverse bias operation?
Yes. The black cathode band marks the cathode terminal, defining forward conduction direction (anode → cathode) and reverse blocking orientation (cathode held at higher potential). This marking is consistent across all MiniMELF diodes in the LLSD101x family.
Why is LLSD101A-13 marked "Not Recommended for New Designs"?
Diodes Incorporated issued this notice because the SD101AW–SD101CW series replaces LLSD101A–LLSD101C with identical electrical specs, improved process control, and extended long-term availability-though LLSD101A-13 remains fully functional and supported for existing production.
LLSD101A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-213AC, MINI-MELF, SOD-80
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 15mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 1 ns
- Current - Reverse Leakage @ Vr:
- 200 nA @ 50 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Mini MELF
- Operating Temperature - Junction:
- -55°C ~ 125°C
LLSD101A-13 FAQ
1.How can I place an order for LLSD101A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for LLSD101A-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 LLSD101A-13 reliable?
The price and inventory of LLSD101A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LLSD101A-13 is usually 5 days.
3.What payment methods are accepted for LLSD101A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LLSD101A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LLSD101A-13?
LLSD101A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LLSD101A-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 LLSD101A-13?
For technical support, including LLSD101A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LLSD101A-13 requirements.
6.How does Aetrix verify that LLSD101A-13 is sourced from the original manufacturer or authorized distributors?
All LLSD101A-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 LLSD101A-13 meets industry standards.
7.What is the process for return or replacement of LLSD101A-13?
All LLSD101A-13 units undergo pre-shipment inspection (PSI). If there is an issue with LLSD101A-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 LLSD101A-13 part is unused and in its original packaging.
Return procedure for LLSD101A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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