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Microchip Technology CDLL4104
- Part No.:
- CDLL4104
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF
- Datasheet:
-
CDLL4104.pdf
- Description:
- DIODE ZENER 10V 500MW DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,769
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Product details
Overview
CDLL4104 from Microsemi is a hermetically sealed, surface-mount silicon Zener diode in DO-213AA (MELF/LL34) package, rated for 10 V nominal Zener voltage at 250 µA test current, 200 Ω Zener impedance, 7.60 V minimum reverse voltage, and 38 mA maximum Zener current - used for precision voltage reference and overvoltage protection in aerospace-grade power regulation circuits.
For engineers reviewing the CDLL4104 datasheet, CDLL4104 pinout, CDLL4104 application, or CDLL4104 equivalent, this page delivers verified electrical specs, thermal derating behavior, junction temperature limits, hermetic packaging details, and MIL-PRF-19500/435 compliance context essential for high-reliability analog design and qualification-critical BOMs.
Technical Context
The CDLL4104 operates as a two-terminal voltage reference device with cathode-banded polarity, requiring reverse-bias connection to maintain stable 10 V regulation across its specified 250 µA–38 mA operating range. Its metallurgically bonded construction ensures low thermal resistance (100 °C/W max at L = 0 inch) and robust operation from –65°C to +175°C junction temperature.
Designed per MIL-PRF-19500/435 Class JANTXV, it supports low-current precision referencing at 250 µA test current and exhibits 5% Zener voltage tolerance (±0.5 V), with Zener impedance measured using 25 µA rms 60 Hz AC superimposed on DC bias - confirming stability under small-signal dynamic loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10 V nominal at 250 µA - defines primary regulation point for low-power reference circuits |
| Zener Impedance (ZZT) | 200 Ω max - indicates voltage stability under small-signal AC perturbation |
| Reverse Leakage Current (IR) | 1.0 µA max at 7.60 V - confirms low parasitic conduction below knee voltage |
| Max Zener Current (IZM) | 38 mA - sets upper limit for sustained power dissipation without degradation |
| Junction Temp Range | –65°C to +175°C - enables deployment in extreme-environment avionics and downhole electronics |
| Power Dissipation | 500 mW @ TEC = +125°C - defines thermal envelope for PCB layout and heatsinking |
| Voltage Tolerance | ±5% - specifies absolute accuracy band for calibration-critical applications |
Pinout & Package
DO-213AA (MELF/LL34) hermetically sealed glass package: cylindrical, leadless, axial symmetry, tin/lead metallization, 1.60–1.70 mm diameter, 3.30–3.70 mm length, 0.41–0.55 mm end cap width. Polarity marked by single cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Reverse-bias terminal / regulated output side | Banded end; connected to supply rail or reference node requiring stabilized 10 V |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass Sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| MIL-PRF-19500/435 Compliance | Qualified to JANTXV level for mission-critical aerospace and defense systems |
| Low 250 µA Test Current | Enables ultra-low-power voltage reference use in battery-backed or energy-harvesting circuits |
| Metallurgical Bonding | Ensures mechanical integrity and thermal cycle reliability under shock/vibration stress |
| Thermal Resistance (RθJC) | 100 °C/W max - simplifies thermal modeling for high-density PCB layouts |
Applications
| Aerospace Power Conditioning | Downhole Sensor Reference |
|---|---|
Use Scenario: Regulating bias voltage for radiation-hardened op-amps in satellite telemetry modules. IC Role / Device Role / Timing Role: Precision 10 V Zener reference providing stable excitation for analog front-end signal chains. Use Value: Maintains ±5% voltage accuracy across –65°C to +175°C, enabling reliable ADC calibration without external trimming. | Use Scenario: Supplying reference voltage to piezoresistive pressure transducers in oil/gas well logging tools. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) Zener element establishing fixed reference under high-temperature, high-humidity conditions. Use Value: Hermetic DO-213AA package prevents parameter shift due to moisture-induced leakage, ensuring repeatable sensor output. |
| Military Avionics Voltage Clamp | Spacecraft Battery Monitor |
Use Scenario: Overvoltage protection for 12 V bus monitoring circuits in fighter jet flight control systems. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting transient spikes above 10 V while surviving MIL-STD-704 surges. Use Value: 38 mA IZM and 200 Ω ZZT enable rapid clamping with minimal overshoot during ESD events. | Use Scenario: Providing stable reference for coulomb counting ICs in lithium-thionyl chloride battery packs aboard CubeSats. IC Role / Device Role / Timing Role: Ultra-low-current (250 µA) Zener reference minimizing standby drain in long-duration missions. Use Value: Enables >10-year shelf life by drawing only 250 µA during continuous monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4104UR-1 | Same 10 V Zener voltage, identical DO-213AA package, but rated to JANTXV spec with tighter process controls and full lot traceability | Required where full MIL-PRF-19500/435 documentation and certificate of conformance are mandatory | Select when full military qualification documentation and extended temperature validation are contractually required |
| BZX84-C10 | 10 V Zener, SOT-23 package, ±5% tolerance, but plastic encapsulation and only commercial temperature range (–65°C to +150°C) | Suitable for non-military industrial designs where cost and board space outweigh hermeticity and extended temp needs | Choose for cost-sensitive terrestrial applications where MIL-spec reliability is not mandated |
Compared with CDLL4104, 1N4104UR-1 offers identical electrical performance with enhanced traceability for defense programs, while BZX84-C10 trades hermetic reliability and extended temperature capability for compact size and lower unit cost in commercial systems.
Availability
CDLL4104 is available at Aetrix Electronics and suitable for aerospace power conditioning, downhole sensor reference, military avionics voltage clamp, and spacecraft battery monitor applications requiring stable component supply, long-lifecycle support, and MIL-qualified sourcing.
Supply support for CDLL4104 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The CDLL4104 belongs to Microsemi's legacy MIL-PRF-19500/435-compliant Zener diode family, engineered for precision voltage reference and overvoltage protection in mission-critical systems operating across extreme temperatures and harsh environments.
FAQ
What is the Zener voltage tolerance for CDLL4104?
The CDLL4104 has a nominal Zener voltage of 10 V with a tolerance of ±5%, meaning the actual measured voltage falls between 9.5 V and 10.5 V at 250 µA test current and 25°C ambient. This tolerance is defined per MIL-PRF-19500/435 and applies to devices without suffix modifiers; "C" or "D" suffixes would indicate tighter ±2% or ±1% tolerances, respectively - which CDLL4104 does not carry.
Is CDLL4104 suitable for surface-mount assembly?
Yes, CDLL4104 is designed for surface-mount use in the DO-213AA (MELF/LL34) package - a leadless, cylindrical, hermetically sealed glass case optimized for reflow soldering. Its axial coefficient of expansion (~6 ppm/°C) requires matching to compatible PCB substrate materials to prevent mechanical stress during thermal cycling, and its tin/lead finish ensures reliable wetting during standard SMT processes.
What is the maximum power dissipation for CDLL4104 at 150°C ambient?
At an end-cap temperature (TEC) of 150°C, CDLL4104's power dissipation must be derated linearly from 500 mW at 125°C at 10 mW/°C. Thus, at 150°C, maximum allowable power is 500 mW − (150 − 125) × 10 mW = 250 mW. Exceeding this risks thermal runaway or permanent parametric shift, especially given its 100 °C/W thermal resistance and hermetic glass construction.
Does CDLL4104 meet MIL-PRF-19500/435 requirements?
Yes, CDLL4104 is explicitly qualified per MIL-PRF-19500/435, as confirmed in Microsemi's official documentation and product family designation. It meets Class JANTXV requirements including environmental testing, lot traceability, and screening for vibration, thermal shock, and hermeticity - making it suitable for use in defense and space applications where compliance with this specification is mandatory.
How does CDLL4104 compare to CDLL4105 in terms of Zener voltage and leakage?
CDLL4104 has a nominal Zener voltage of 10 V and maximum reverse leakage of 1.0 µA at 7.60 V, whereas CDLL4105 is rated for 11 V with maximum leakage of 0.05 µA at 8.44 V. The lower leakage of CDLL4105 reflects tighter process control for higher-voltage Zeners, but both share identical test current (250 µA), Zener impedance (200 Ω), and thermal ratings - allowing direct substitution only where voltage and leakage requirements align.
CDLL4104 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 7.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB
CDLL4104 FAQ
1.How can I place an order for CDLL4104 through Aetrix?
Please submit a Request for Quotation (RFQ) for CDLL4104 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 CDLL4104 reliable?
The price and inventory of CDLL4104 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CDLL4104 is usually 5 days.
3.What payment methods are accepted for CDLL4104?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CDLL4104 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CDLL4104?
CDLL4104 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CDLL4104 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 CDLL4104?
For technical support, including CDLL4104 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CDLL4104 requirements.
6.How does Aetrix verify that CDLL4104 is sourced from the original manufacturer or authorized distributors?
All CDLL4104 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 CDLL4104 meets industry standards.
7.What is the process for return or replacement of CDLL4104?
All CDLL4104 units undergo pre-shipment inspection (PSI). If there is an issue with CDLL4104, 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 CDLL4104 part is unused and in its original packaging.
Return procedure for CDLL4104:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CDLL4104 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
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MMSZ5231B-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MM5Z5V1ST1G
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SMAZ12-13-F
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