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Microchip Technology CDLL4110
- Part No.:
- CDLL4110
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF
- Datasheet:
-
CDLL4110.pdf
- Description:
- DIODE ZENER 16V 500MW DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,434
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Product details
Overview
CDLL4110 from Microsemi is a hermetically sealed, surface-mount silicon Zener diode in DO-213AA (MELF/LL34) package, rated for 16 V nominal Zener voltage at 250 µA test current, 100 Ω maximum Zener impedance, 12.15 V minimum Zener voltage at 24 mA, and reverse leakage ≤0.05 µA at 12.15 V - used for precision voltage reference and overvoltage protection in aerospace power conditioning circuits.
For engineers reviewing the CDLL4110 datasheet, CDLL4110 pinout, CDLL4110 application, or CDLL4110 equivalent, key selection criteria include its ±5% Zener tolerance, 100 °C/W junction-to-ambient thermal resistance, -65°C to +175°C operating temperature range, low-current regulation capability at 250 µA, and hermetic glass MELF construction for high-reliability environments.
Technical Context
The CDLL4110 operates as a two-terminal voltage reference device with cathode-banded polarity, requiring reverse-bias connection to maintain stable Zener conduction. Its metallurgically bonded junction ensures long-term stability under thermal cycling, and its DO-213AA glass package provides hermetic sealing compliant with MIL-PRF-19500/435 Class JANTXV.
Designed for low-current regulation, the CDLL4110 delivers specified Zener characteristics at 250 µA test current, with Zener impedance measured using 25 µA AC superimposed on DC bias - enabling predictable dynamic response in feedback loops and reference buffers where minimal current draw is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V nominal at 250 µA; ±5% tolerance ensures predictable clamping within 15.2–16.8 V across production lot. |
| Zener Impedance (ZZT) | ≤100 Ω at 250 µA; limits voltage deviation under small-signal load variations in reference circuits. |
| Reverse Leakage (IR) | ≤0.05 µA at 12.15 V; enables ultra-low standby current in battery-backed or low-power monitoring systems. |
| Power Dissipation | 500 mW at TEC = +125°C; derates linearly to zero at +175°C, supporting operation in high-temperature avionics enclosures. |
| Junction Temp Range | -65°C to +175°C; qualified for extended-range military and space-grade applications without derating penalties. |
| Package Type | DO-213AA (MELF/LL34); hermetically sealed glass body with tin/lead leads, compatible with reflow and wave soldering per MIL-STD-202. |
Pinout & Package
DO-213AA (MELF) glass package: cylindrical, leadless, axial symmetry; cathode identified by single black band; no PCB pads required - mounted directly between conductive traces or soldered axially.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; forms return path during clamping. |
| Cathode | Zener breakdown terminal | Banded end; connected to higher-potential node; regulates voltage by conducting when reverse voltage exceeds 16 V. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass Construction | DO-213AA package prevents moisture ingress and ion migration, ensuring >20-year parametric stability in vacuum or humid environments. |
| Low-Current Regulation | Specified Zener performance at 250 µA enables use in micropower references where supply current is constrained below 1 mA. |
| MIL-PRF-19500/435 Qualified | Qualified to JANTXV level with full screening including burn-in, temperature cycling, and life testing - suitable for flight-critical subsystems. |
| Thermal Expansion Match | 6 ppm/°C axial COE allows direct mounting onto aluminum or Kovar substrates without mechanical stress-induced parameter drift. |
Applications
| Aerospace Power Supervision | Satellite Bus Voltage Reference |
|---|---|
Use Scenario: Monitoring 28 V primary bus voltage in launch vehicle telemetry modules. IC Role / Device Role / Timing Role: Zener reference element in comparator-based undervoltage/overvoltage detection circuit. Use Value: Stable 16 V threshold ensures reliable trip point despite thermal gradients from -55°C to +125°C ambient. | Use Scenario: Providing regulated bias for radiation-hardened op-amps in satellite attitude control electronics. IC Role / Device Role / Timing Role: Precision shunt reference in low-noise, low-drift analog front-end. Use Value: ≤0.05 µA leakage preserves battery life over multi-year orbital missions with infrequent wake-up cycles. |
| Avionics Sensor Signal Conditioning | Tactical Radio RF Stage Protection |
Use Scenario: Scaling and offsetting thermocouple outputs in engine health monitoring units. IC Role / Device Role / Timing Role: Clamp diode in input protection network of instrumentation amplifier. Use Value: 100 Ω Zener impedance minimizes signal distortion during transient overvoltage events up to ±200 V. | Use Scenario: ESD and surge suppression at RF power amplifier output stage in manpack radios. IC Role / Device Role / Timing Role: Secondary Zener clamp in multi-stage TVS architecture. Use Value: Hermetic glass construction withstands repeated 8 kV HBM ESD strikes without parameter shift or leakage increase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4110UR-1 | Same electrical specs and DO-213AA package; differs only in JAN/JANTXV screening documentation and traceability reporting. | Approved for DoD procurement with full QPL traceability; identical performance in non-military designs. | Select CDLL4110 for commercial-space or industrial programs where full MIL-QPL documentation is not mandated. |
| CDLL4110C | ±2% Zener tolerance (vs. ±5% for CDLL4110); otherwise identical ratings, package, and screening level. | Required where tighter voltage accuracy is needed in closed-loop feedback or calibration circuits. | Choose CDLL4110C when system-level error budget demands <±0.32 V Zener uncertainty at 25°C. |
Compared with 1N4110UR-1, CDLL4110 offers identical Zener behavior but simplified sourcing for non-defense programs; versus CDLL4110C, it trades tighter tolerance for lower cost and broader availability in standard production lots.
Availability
CDLL4110 is available at Aetrix Electronics and suitable for aerospace power supervision, satellite bus voltage reference, and avionics sensor signal conditioning requiring stable component supply across extended temperature and radiation environments.
Supply support for CDLL4110 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 defense, aerospace, and industrial markets.
The CDLL4110 belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode family, engineered for precision voltage regulation in mission-critical systems where long-term stability and environmental survivability are mandatory.
FAQ
What is the Zener voltage tolerance for CDLL4110?
The CDLL4110 has a nominal Zener voltage of 16 V with a tolerance of ±5%, meaning the actual Zener voltage falls between 15.2 V and 16.8 V when measured at 250 µA and 25°C ambient. This tolerance is defined per Note 1 in the official Microsemi specification sheet and applies to all standard CDLL4110 units without suffixes.
Is CDLL4110 suitable for surface-mount assembly?
Yes, CDLL4110 is designed for surface-mount use in DO-213AA (MELF/LL34) package - a leadless, cylindrical glass case with axial symmetry. It supports standard reflow and wave soldering processes per MIL-STD-202, and its tin/lead lead finish ensures reliable wetting and joint integrity on PCBs.
What is the maximum reverse leakage current for CDLL4110?
The maximum reverse leakage current for CDLL4110 is 0.05 µA at 12.15 V (the minimum specified Zener voltage), measured at 25°C. This ultra-low leakage supports energy-efficient operation in battery-powered or always-on monitoring circuits where standby current must remain below 100 nA.
Does CDLL4110 require heatsinking in normal operation?
No, CDLL4110 does not require external heatsinking under typical operating conditions. With a maximum power dissipation of 500 mW at +125°C end-cap temperature and thermal resistance of 100 °C/W, it remains within safe junction limits up to 175°C ambient when mounted on standard FR-4 or metal-core PCBs with adequate copper area.
How does CDLL4110 differ from CDLL4110C?
CDLL4110C is a tighter-tolerance variant of CDLL4110, offering ±2% Zener voltage accuracy versus ±5% for CDLL4110. All other electrical, thermal, mechanical, and reliability specifications - including package, Zener impedance, leakage, and MIL-PRF-19500/435 qualification - are identical between CDLL4110 and CDLL4110C.
CDLL4110 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12.2 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
CDLL4110 FAQ
1.How can I place an order for CDLL4110 through Aetrix?
Please submit a Request for Quotation (RFQ) for CDLL4110 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 CDLL4110 reliable?
The price and inventory of CDLL4110 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CDLL4110 is usually 5 days.
3.What payment methods are accepted for CDLL4110?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CDLL4110 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CDLL4110?
CDLL4110 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CDLL4110 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 CDLL4110?
For technical support, including CDLL4110 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CDLL4110 requirements.
6.How does Aetrix verify that CDLL4110 is sourced from the original manufacturer or authorized distributors?
All CDLL4110 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 CDLL4110 meets industry standards.
7.What is the process for return or replacement of CDLL4110?
All CDLL4110 units undergo pre-shipment inspection (PSI). If there is an issue with CDLL4110, 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 CDLL4110 part is unused and in its original packaging.
Return procedure for CDLL4110:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CDLL4110 Tags
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