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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated LLSD101C-13

Name: LLSD101C-13
Brand: Diodes Incorporated
SKU: LLSD101C-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LLSD101C-13

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-213AA

Datasheet:: LLSD101C-13.pdf

Description:: DIODE SCHOTT 40V 15MA MINI MELF

Quantity:: RFQ Add To RFQ list

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Inventory:3,264

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Product details

Overview

LLSD101C-13 from Diodes Incorporated is a surface-mount Schottky barrier diode in MiniMELF glass package, rated for 40 V DC blocking voltage, 15 mA forward current, and 0.39 V forward voltage at 1.0 mA. It delivers fast 1.0 ns reverse recovery time and low 2.2 pF junction capacitance, used in low-power signal demodulation and RF detector circuits.

For engineers reviewing the LLSD101C-13 datasheet, LLSD101C-13 pinout, LLSD101C-13 application, or LLSD101C-13 equivalent, key selection criteria include its cathode-band polarity marking, glass-body thermal stability up to +125°C junction temperature, RoHS-compliant Sn97.5Ag2.5 termination, and MiniMELF mechanical dimensions (A: 3.30–3.70 mm, B: 1.30–1.60 mm).

Technical Context

This Schottky diode leverages guard ring construction to suppress transient-induced leakage and improve ruggedness under repetitive voltage stress. Its low forward voltage drop stems from optimized metal-semiconductor interface design, enabling efficient operation in battery-powered signal paths.

The device exhibits minimal charge storage due to ultrafast trr (1.0 ns) and low CT (2.2 pF at 0 V), making it suitable for high-frequency envelope detection and low-current switching where capacitive loading and switching loss must be minimized.

Key Specifications

Parameter	Value and Actual Design Meaning
V_R (DC Blocking)	40 V - Maximum steady-state reverse bias before breakdown in signal coupling applications
V_F @ 1.0 mA	0.39 V - Enables sub-0.4 V conduction threshold for weak-signal detection
I_F Continuous	15 mA - Supports sustained current in low-power RF detector and clamp circuits
t_rr	1.0 ns - Allows operation up to ~350 MHz small-signal rectification without phase distortion
C_T @ 0 V	2.2 pF - Limits parasitic shunt capacitance in 10–100 MHz tuned circuits
T_J Range	−55°C to +125°C - Ensures stable VF and IR performance across industrial ambient conditions
Package	MiniMELF (Glass) - Provides hermetic sealing, UL 94V-0 flammability rating, and high-temperature solder compatibility

Pinout & Package

MiniMELF glass package with axial cathode band marking; two-terminal device with no internal leads - anode and cathode defined by band position. Body diameter 1.30–1.60 mm, length 3.30–3.70 mm, lead-free Sn97.5Ag2.5 termination.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to higher-potential node in forward-biased configuration; requires PCB pad layout per AP02001 for thermal reliability
Cathode (band-marked end)	Forward current exit / reverse-blocking terminal	Band identifies polarity during automated placement; critical for correct orientation in RF detector and clamping topologies

Key Features

Feature	Design Value
Guard ring construction	Suppresses edge leakage and improves transient immunity in ESD-prone RF front-ends
Low V_F (0.39 V @ 1 mA)	Enables detection of signals as low as −20 dBm in crystal radio-style receivers
1.0 ns t_rr	Minimizes stored charge loss in 10–50 MHz AM demodulator stages
2.2 pF C_T	Preserves Q-factor in parallel-resonant tank circuits operating above 30 MHz
UL 94V-0 glass body	Meets flame-retardancy requirements for Class B consumer and industrial enclosures

Applications

AM Radio Detector

RF Signal Clamp

Use Scenario: Demodulating amplitude-modulated carrier signals in portable shortwave receivers.

IC Role / Device Role / Timing Role: Passive signal rectifier converting RF envelope to audio baseband.

Use Value: 0.39 V V_F enables reliable detection of weak signals below 100 µV without external biasing.

Use Scenario: Limiting input signal swing to protect downstream LNA inputs in 2.4 GHz ISM-band transceivers.

IC Role / Device Role / Timing Role: Fast-acting RF clamp diode shunting excess RF energy to ground.

Use Value: 1.0 ns t_rr and 2.2 pF C_T prevent harmonic generation and preserve signal integrity up to 1 GHz.

Low-Power Sensor Interface

Crystal Oscillator Load Stabilizer

Use Scenario: Level-shifting and signal conditioning for piezoelectric sensor outputs in battery-operated condition monitoring nodes.

IC Role / Device Role / Timing Role: Bidirectional clamping diode protecting ADC input against overvoltage transients.

Use Value: Guard ring structure ensures stable IR (<200 nA at 30 V) across −40°C to +85°C operating range.

Use Scenario: Bias stabilization and harmonic suppression in fundamental-mode 1–30 MHz crystal oscillator tanks.

IC Role / Device Role / Timing Role: Nonlinear element providing automatic gain control via junction capacitance modulation.

Use Value: Low 2.2 pF C_T minimizes frequency pulling while maintaining sufficient nonlinearity for startup reliability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SD101CW-7	Same MiniMELF package; lower V_F (0.35 V @ 1 mA); higher I_F (30 mA); RoHS-compliant SnAgCu finish	Supports higher continuous current in active bias networks; better suited for 50 mA peak pulse clamping	Select SD101CW-7 when upgrading legacy designs requiring extended current headroom and updated Pb-free compliance
BAT54C-7-F	SOT-23 package; dual common-cathode configuration; V_F = 0.33 V @ 10 mA; C_T = 10 pF @ 0 V	Higher capacitance limits use to ≤10 MHz; surface-mount compatible but not drop-in due to footprint mismatch	Choose BAT54C-7-F only if board redesign allows SOT-23 placement and system bandwidth permits higher C_T

Compared with LLSD101C-13, SD101CW-7 offers improved current capability and modern termination, while BAT54C-7-F trades MiniMELF's low-C_T advantage for dual-diode integration at the cost of 4.5× higher junction capacitance - critical for >30 MHz signal integrity.

Availability

LLSD101C-13 is available at Aetrix Electronics and suitable for RF detector circuits, low-power sensor interfaces, and crystal oscillator stabilization requiring stable component supply and long-term obsolescence management.

Supply support for LLSD101C-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, application-optimized components for power management, signal integrity, and protection.

The LLSD101x series belongs to Diodes' legacy MiniMELF Schottky portfolio, designed specifically for high-frequency, low-current signal conditioning in space-constrained RF and portable electronics.

FAQ

Is LLSD101C-13 suitable for new designs?

No - Diodes Incorporated explicitly marks LLSD101C-13 as "NOT RECOMMENDED FOR NEW DESIGNS" and recommends SD101AW–SD101CW as direct replacements. These newer variants retain MiniMELF packaging but feature enhanced current ratings, tighter V_F tolerance, and updated RoHS-compliant terminations aligned with J-STD-020D.

What is the thermal resistance of LLSD101C-13?

The thermal resistance from junction to ambient (R_JA) is 375°C/W under standard FR-4 mounting conditions with the recommended pad layout per AP02001. This value assumes natural convection cooling and reflects the glass MiniMELF package's limited heat-spreading capability - appropriate for <400 mW dissipation in intermittent-use signal paths.

How is polarity identified on LLSD101C-13?

Polarity is marked by a single cathode band at one end of the glass MiniMELF body. The banded end is the cathode; the opposite end is the anode. No additional markings are present - consistent with industry-standard MiniMELF diode identification and verified in Diodes' DS30067 Rev. 5 mechanical drawings.

Does LLSD101C-13 meet automotive AEC-Q200 requirements?

No - LLSD101C-13 is not qualified to AEC-Q200. It is specified for industrial and commercial temperature ranges (−55°C to +125°C), but lacks the stress testing, failure analysis, and lot traceability required for automotive qualification. For AEC-Q200-compliant alternatives, consider Diodes' AP7165 series Schottky diodes in SOD-123FL packages.

LLSD101C-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-213AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 40 V

Current - Average Rectified (Io):: 15mA

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 15 mA

Speed:: Small Signal =< 200mA (Io), Any Speed

Reverse Recovery Time (trr):: 1 ns

Current - Reverse Leakage @ Vr:: 200 nA @ 30 V

Capacitance @ Vr, F:: 2.2pF @ 0V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Mini MELF

Operating Temperature - Junction:: -55°C ~ 125°C

LLSD101C-13 FAQ

1.How can I place an order for LLSD101C-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for LLSD101C-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 LLSD101C-13 reliable?

The price and inventory of LLSD101C-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LLSD101C-13 is usually 5 days.

3.What payment methods are accepted for LLSD101C-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LLSD101C-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LLSD101C-13?

LLSD101C-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LLSD101C-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 LLSD101C-13?

For technical support, including LLSD101C-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LLSD101C-13 requirements.

6.How does Aetrix verify that LLSD101C-13 is sourced from the original manufacturer or authorized distributors?

All LLSD101C-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 LLSD101C-13 meets industry standards.

7.What is the process for return or replacement of LLSD101C-13?

All LLSD101C-13 units undergo pre-shipment inspection (PSI). If there is an issue with LLSD101C-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 LLSD101C-13 part is unused and in its original packaging.

Return procedure for LLSD101C-13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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