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Microchip Technology CDLL5711/TR
- Part No.:
- CDLL5711/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- DO-213AA
- Datasheet:
-
CDLL5711/TR.pdf
- Description:
- DIODE SCHOTTKY 50V 33MA DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:101
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Product details
Overview
CDLL5711/TR from Microchip Technology is a Schottky barrier diode rated for 50 V reverse voltage and 33 mA average forward current in a DO-213AA (GL41) glass package, optimized for low-leakage signal demodulation and RF detector applications in portable wireless receivers.
For engineers reviewing the CDLL5711/TR datasheet, CDLL5711/TR pinout, CDLL5711/TR application, or CDLL5711/TR equivalent, key selection criteria include its 0.35 V typical forward voltage at 1 mA, 0.5 pF junction capacitance at 0 V, and guaranteed maximum reverse leakage of 100 nA at 50 V - critical for high-sensitivity AM/FM detector circuits.
Technical Context
The CDLL5711/TR employs a planar-doped, low-barrier Schottky junction on N-type silicon to achieve fast switching with minimal stored charge. Its construction uses a hermetically sealed glass envelope with axial leads, enabling stable operation across −65°C to +175°C ambient temperatures.
Designed for zero-bias or low-current detection, the device exhibits no minority-carrier storage delay and maintains sub-100 nA reverse leakage up to 50 V, making it suitable for passive detector stages where signal integrity and thermal stability are prioritized over power handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Max) | 50 V - maximum reverse voltage before breakdown; sets upper limit for RF signal amplitude handling in detector circuits |
| IF(AV) | 33 mA - average forward current rating; defines continuous DC bias capability without thermal runaway |
| VF @ 1 mA | 0.35 V typical - low forward drop enables efficient rectification of weak RF signals without external bias |
| Cj @ 0 V | 0.5 pF - ultra-low junction capacitance preserves high-frequency response above 1 GHz in tuned detector paths |
| IR @ 50 V | ≤100 nA - extremely low leakage ensures minimal DC offset and noise contribution in precision demodulators |
| TJ Range | −65°C to +175°C - wide operating temperature range supports deployment in automotive under-hood and industrial sensor modules |
Pinout & Package
Package: DO-213AA (GL41), hermetically sealed glass axial package with cathode band marking; dimensions 2.0 × 4.0 mm body, 0.45 mm lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to RF input or signal source side in series detector configuration |
| Cathode | Forward current exit / polarity reference | Marked by band; tied to load resistor or coupling capacitor in demodulator output path |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.35 V at 1 mA enables reliable detection of sub-10 mV RF signals without external bias |
| Ultra-low junction capacitance | 0.5 pF at 0 V preserves bandwidth in VHF/UHF receiver front-end detector stages |
| Hermetic glass package | DO-213AA construction ensures long-term parameter stability in humid or corrosive environments |
| High-temperature operation | Rated to +175°C junction temperature supports use in engine control and industrial telemetry modules |
Applications
| AM/FM Radio Detector | RF Power Monitor |
|---|---|
Use Scenario: Demodulating amplitude-modulated broadcast signals in portable radios and IoT audio receivers. IC Role / Device Role / Timing Role: Passive signal rectifier in series-connected detector circuit with RC low-pass filter. Use Value: Sub-100 nA leakage prevents DC drift in audio output stage; 0.35 V VF ensures sensitivity to weak field-strength signals. | Use Scenario: Measuring forward RF power in 50 Ω transmission lines using directional coupler outputs. IC Role / Device Role / Timing Role: Zero-bias detector diode converting coupled RF sample into proportional DC voltage. Use Value: 0.5 pF Cj minimizes loading on coupler secondary port; stable VF enables calibrated power readout. |
| Wireless Sensor Node Wake-Up | Automotive Tire Pressure Monitor (TPMS) |
Use Scenario: Detecting periodic RF beacons to wake ultra-low-power microcontrollers in battery-operated sensors. IC Role / Device Role / Timing Role: Energy harvesting element converting 433/868 MHz beacon pulses into trigger-level DC. Use Value: 33 mA IF(AV) supports burst-mode energy capture; DO-213AA package withstands reflow and mechanical stress. | Use Scenario: Rectifying 434 MHz RF signals from wheel-mounted TPMS transmitters inside tire assemblies. IC Role / Device Role / Timing Role: Signal detector in the receiver IC's analog front-end, feeding baseband demodulation. Use Value: −65°C to +175°C rating matches tire cavity thermal cycling; hermetic seal prevents moisture-induced parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky detector diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MACOM MADP-000907-14150T | Higher 0.8 pF Cj, 0.45 V VF @ 1 mA, SOD-323 surface-mount package | Better suited for PCB-integrated RF detector ICs; not axial-lead compatible | Select when board space is constrained and reflow assembly is required |
| NXP BAP50-03,115 | 0.45 V VF @ 1 mA, 0.6 pF Cj, DO-35 glass package with same pinout but larger body | Slightly higher leakage (200 nA @ 50 V); wider availability in high-volume distribution | Choose for cost-sensitive consumer designs where 100 nA leakage margin is noncritical |
Compared with CDLL5711/TR, MADP-000907-14150T trades lower leakage and axial form factor for higher capacitance and SMT compatibility, while BAP50-03,115 offers broader logistics support at the expense of tighter leakage control - both require layout or sourcing reassessment.
Availability
CDLL5711/TR is available at Aetrix Electronics and suitable for AM/FM radio detectors, RF power monitors, wireless sensor node wake-up circuits, and automotive TPMS receivers requiring stable component supply across extended temperature ranges.
Supply support for CDLL5711/TR 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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and timing solutions with emphasis on reliability and long-term product support.
The CDLL5711/TR belongs to Microchip's legacy Schottky detector diode family, engineered specifically for high-fidelity RF signal detection in resource-constrained, thermally demanding environments.
FAQ
What is the maximum reverse voltage rating for CDLL5711/TR?
The CDLL5711/TR has a maximum repetitive peak reverse voltage (VRRM) of 50 V, verified per Microchip's official datasheet. This rating defines the highest instantaneous reverse voltage the diode can block without entering avalanche conduction. Exceeding this value risks irreversible junction damage. The CDLL5711/TR is intended for low-voltage RF detection, not power rectification.
Does CDLL5711/TR have a specified junction capacitance?
Yes, CDLL5711/TR specifies a typical junction capacitance (Cj) of 0.5 pF at 0 V reverse bias, measured at 1 MHz. This ultra-low value is critical for maintaining signal fidelity in VHF/UHF detector applications. The capacitance remains stable across temperature due to the DO-213AA glass package's hermetic sealing and low parasitic structure.
What is the forward voltage of CDLL5711/TR at 1 mA?
The CDLL5711/TR exhibits a typical forward voltage (VF) of 0.35 V at 1 mA forward current, per Microchip's characterization data. This low drop enables effective zero-bias detection of weak RF signals. The value is measured under pulsed conditions to minimize self-heating effects, ensuring repeatability in detector circuit design.
Is CDLL5711/TR suitable for automotive under-hood applications?
Yes, CDLL5711/TR is rated for operation from −65°C to +175°C, meeting under-hood thermal requirements in many automotive subsystems. Its DO-213AA glass package provides hermeticity against humidity and chemical exposure, and its 100 nA max reverse leakage at 50 V ensures stable performance in TPMS and tire sensor receivers where signal integrity is critical.
What package type does CDLL5711/TR use?
CDLL5711/TR uses the DO-213AA (also known as GL41) axial-lead, hermetically sealed glass package. It measures 2.0 mm in diameter and 4.0 mm in length, with 0.45 mm diameter tinned copper alloy leads. This package delivers superior long-term parameter stability compared to plastic-packaged alternatives, especially in high-reliability RF detection roles.
CDLL5711/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 33mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 nA @ 50 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
- Operating Temperature - Junction:
- -65°C ~ 150°C
CDLL5711/TR FAQ
1.How can I place an order for CDLL5711/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for CDLL5711/TR 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 CDLL5711/TR reliable?
The price and inventory of CDLL5711/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CDLL5711/TR is usually 5 days.
3.What payment methods are accepted for CDLL5711/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CDLL5711/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CDLL5711/TR?
CDLL5711/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CDLL5711/TR 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 CDLL5711/TR?
For technical support, including CDLL5711/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CDLL5711/TR requirements.
6.How does Aetrix verify that CDLL5711/TR is sourced from the original manufacturer or authorized distributors?
All CDLL5711/TR 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 CDLL5711/TR meets industry standards.
7.What is the process for return or replacement of CDLL5711/TR?
All CDLL5711/TR units undergo pre-shipment inspection (PSI). If there is an issue with CDLL5711/TR, 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 CDLL5711/TR part is unused and in its original packaging.
Return procedure for CDLL5711/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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