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Diodes Incorporated LLSD101A-7
- Part No.:
- LLSD101A-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
LLSD101A-7.pdf
- Description:
- DIODE SCHOTT 60V 15MA MINI MELF
- Quantity:
- Payment:
- Shipping:
Inventory:6,656
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Product details
Overview
LLSD101A-7 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 forward voltage at 1.0 mA - optimized for low-power signal demodulation and high-frequency detector circuits in portable RF receivers.
For engineers reviewing the LLSD101A-7 datasheet, LLSD101A-7 pinout, LLSD101A-7 application, or LLSD101A-7 equivalent, key selection criteria include its 1.0 ns reverse recovery time, 2.0 pF junction capacitance at 0 V, cathode-band polarity marking, RoHS-compliant Sn97.5Ag2.5 termination, and UL 94V-0 flammability rating for space-constrained analog front-end designs.
Technical Context
This Schottky diode leverages guard ring construction to suppress transient-induced breakdown and achieves fast switching via low-junction-capacitance (2.0 pF) and ultrafast reverse recovery (1.0 ns) under IF = IR = 5.0 mA test conditions. Its low VF (0.41 V @ 1 mA) minimizes conduction loss in low-current detection paths.
Designed for operation from –55 °C to +125 °C with 375 °C/W junction-to-ambient thermal resistance on FR-4 board, it supports reliable performance in battery-powered instrumentation and RF sampling applications where self-heating must be tightly controlled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - maximum non-repetitive reverse voltage before avalanche breakdown; defines safe operating limit in clamp/detector configurations |
| VF @ 1.0 mA | 0.41 V - low forward drop enables accurate small-signal rectification without significant bias shift in detector circuits |
| trr | 1.0 ns - enables use up to ~300 MHz RF envelope detection without phase distortion or recovery tail artifacts |
| CT @ 0 V | 2.0 pF - minimal junction capacitance preserves high-frequency impedance matching in 50 Ω RF paths |
| IFM | 15 mA - continuous forward current rating sets upper bound for DC-biased detector or clamping duty cycles |
| RJA | 375 °C/W - thermal resistance measured on FR-4 board; requires conservative power derating above 25 °C ambient |
Pinout & Package
MiniMELF glass package (3.3–3.7 mm length × 1.3–1.6 mm diameter), hermetically sealed, with axial cathode band marking. Two-terminal device: anode and cathode defined by band position.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node in rectifier/clamp; polarity-sensitive in series-connected detector legs |
| Cathode | Forward current exit / reverse-blocking terminal | Marked with visible band; ties to reference/ground in common-cathode detector topologies |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Enhances ESD and transient immunity without adding series resistance or degrading trr |
| Low VF at microamp-level currents | Enables sensitive AM/FM detector operation below 100 µA input signal levels |
| UL 94V-0 flammability rating | Meets safety requirements for enclosed consumer electronics without additional potting |
| Moisture Sensitivity Level 1 | Eliminates bake preconditioning prior to reflow; compatible with standard SMT assembly lines |
Applications
| AM Radio Detector | RF Sampling Probe |
|---|---|
Use Scenario: Demodulating amplitude-modulated carrier signals in portable AM radios with passive LC front-end. IC Role / Device Role / Timing Role: Signal rectifier converting RF envelope to baseband audio; operates in zero-bias or micro-bias mode. Use Value: 0.41 V VF ensures >90% detection efficiency at sub-100 µA signal currents, preserving weak-station sensitivity. | Use Scenario: High-impedance, low-capacitance sampling node in handheld RF field strength meters. IC Role / Device Role / Timing Role: Peak-hold diode in passive probe front-end; captures transient RF peaks without loading 50 Ω source. Use Value: 2.0 pF CT minimizes frequency roll-off; 1.0 ns trr prevents hold-time droop during rapid burst sampling. |
| ESD-Sensitive Sensor Interface | Low-Power Voltage Clamp |
Use Scenario: Input protection for precision analog sensors exposed to handling ESD in medical wearables. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at sensor pad; clamps ±8 kV HBM spikes. Use Value: Guard ring structure provides robust 15 kV air discharge immunity without leakage degradation over lifetime. | Use Scenario: Rail-to-rail voltage limiter in coin-cell-powered IoT sensor nodes with 1.8–3.3 V supply range. IC Role / Device Role / Timing Role: Bidirectional clamp between I/O line and VDD/GND; conducts only during overvoltage events. Use Value: 60 V VRRM allows margin against battery surge; 200 nA IR at 50 V ensures <1 nW standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky detector diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SD101AW-7 | Same MiniMELF package; VF = 0.45 V @ 1 mA, VRRM = 60 V, trr = 1.2 ns, CT = 2.5 pF | Slightly higher VF and CT; optimized for higher-volume production with tighter parametric binning | Select when requiring AEC-Q200 stress qualification and extended manufacturer warranty coverage |
| BAT54C-7-F | SOT-23 package; dual common-cathode configuration; VF = 0.32 V @ 10 mA, VRRM = 30 V, trr = 5 ns | Not pin-compatible; lower VRRM limits use to ≤3.3 V logic-clamp or USB data-line protection | Choose for PCB space savings and integrated dual-diode topology in digital interface protection |
Compared with LLSD101A-7, SD101AW-7 offers enhanced process control for automotive-grade reliability but trades 0.04 V higher VF and 0.5 pF more capacitance; BAT54C-7-F delivers lower VF at higher current but sacrifices reverse voltage headroom and single-diode simplicity.
Availability
LLSD101A-7 is available at Aetrix Electronics and suitable for AM radio detectors, RF sampling probes, ESD-sensitive sensor interfaces, and low-power voltage clamps requiring stable component supply across long-lifecycle industrial and consumer programs.
Supply support for LLSD101A-7 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The LLSD101A-7 belongs to Diodes' legacy MiniMELF Schottky diode product line, engineered specifically for high-frequency signal detection and low-leakage clamping in compact portable electronics.
FAQ
Is LLSD101A-7 suitable for reflow soldering?
Yes. LLSD101A-7 features Sn97.5Ag2.5 termination and meets MIL-STD-202 Method 208 solderability requirements. It is rated Moisture Sensitivity Level 1 per J-STD-020C, eliminating pre-bake needs and supporting standard lead-free reflow profiles up to 260 °C peak temperature.
What is the maximum reverse voltage this diode can withstand continuously?
The LLSD101A-7 has a DC blocking voltage (VR) of 60 V, meaning it sustains continuous reverse bias up to 60 V at 25 °C ambient. Derating is required above 25 °C per the thermal resistance (RJA = 375 °C/W) and maximum junction temperature (Tj = +125 °C).
Does LLSD101A-7 have polarity marking, and how is it oriented?
Yes - LLSD101A-7 uses a visible cathode band on the glass body to indicate the cathode terminal. When mounted axially, the banded end connects to the circuit's lower-potential node (e.g., ground or reference rail) in forward-biased operation.
Why is LLSD101A-7 marked "Not Recommended for New Designs"?
Diodes Incorporated issued this notice because the SD101AW–SD101CW series offers improved parametric consistency, tighter VF distribution, and full AEC-Q200 qualification. LLSD101A-7 remains fully functional and supported for existing designs but lacks newer reliability certifications and long-term supply guarantees.
LLSD101A-7 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-7 FAQ
1.How can I place an order for LLSD101A-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for LLSD101A-7 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-7 reliable?
The price and inventory of LLSD101A-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LLSD101A-7 is usually 5 days.
3.What payment methods are accepted for LLSD101A-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LLSD101A-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LLSD101A-7?
LLSD101A-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LLSD101A-7 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-7?
For technical support, including LLSD101A-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LLSD101A-7 requirements.
6.How does Aetrix verify that LLSD101A-7 is sourced from the original manufacturer or authorized distributors?
All LLSD101A-7 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-7 meets industry standards.
7.What is the process for return or replacement of LLSD101A-7?
All LLSD101A-7 units undergo pre-shipment inspection (PSI). If there is an issue with LLSD101A-7, 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-7 part is unused and in its original packaging.
Return procedure for LLSD101A-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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