My Inquiry
My Account
Microchip Technology CDLL823A/TR
- Part No.:
- CDLL823A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
CDLL823A/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,363
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CDLL823A/TR from Central Semiconductor (CDI) is a temperature-compensated, hermetically sealed MELF zener diode with nominal zener voltage 5.9–6.5 V, 10 Ω zener impedance at 7.5 mA test current, and ±0.005 %/°C temperature coefficient. It delivers stable reference voltage in precision power supply regulation and analog sensor biasing circuits operating from –65°C to +175°C.
For engineers reviewing the CDLL823A/TR datasheet, CDLL823A/TR pinout, CDLL823A/TR application, or CDLL823A/TR equivalent, key selection criteria include low-impedance voltage reference stability across wide temperature extremes, hermetic glass packaging for high-reliability environments, and compatibility with surface-mount reflow profiles per DO-213AA (SOD-80/LL34) footprint.
Technical Context
This device uses metallurgically bonded, double-plug construction to minimize voltage drift under thermal stress and achieve tight temperature coefficient control. Its zener impedance of 48 Ω (measured with 10% AC superimposed on 7.5 mA DC) ensures minimal output variation under dynamic load conditions.
The CDLL823A/TR operates with cathode-positive polarity and exhibits reverse leakage current ≤2 µA at 3 V reverse bias and 25°C. Its hermetic DO-213AA glass package supports operation up to +175°C ambient, with 500 mW power dissipation derated at 4 mW/°C above +50°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 5.9–6.5 V @ IZT = 7.5 mA - defines usable reference band for precision analog circuits |
| Zener Impedance | 48 Ω @ IZT = 7.5 mA - ensures low output impedance for stable regulation under varying load |
| Temperature Coefficient | ±0.005 %/°C - enables <±0.5 mV drift over –65°C to +100°C for high-accuracy references |
| Power Dissipation | 500 mW @ +50°C - supports continuous operation in industrial power rails without forced cooling |
| Operating Temperature | –65°C to +175°C - qualified for aerospace, downhole, and military-grade thermal environments |
| Reverse Leakage | ≤2 µA @ VR = 3 V, 25°C - minimizes error contribution in high-impedance bias networks |
Pinout & Package
Package: DO-213AA (MELF, SOD-80, LL34), hermetically sealed glass case with tin/lead lead finish. Cathode identified by band; operated cathode-positive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; must be at lower potential than cathode during regulation |
| Cathode | Regulated output node | Banded end; supplies stable voltage to load; requires current-limiting resistor in series |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF package | Eliminates moisture ingress and long-term parameter drift in harsh environments |
| Double-plug metallurgical construction | Reduces thermal hysteresis and improves voltage stability over thermal cycling |
| Low temperature coefficient (±0.005 %/°C) | Enables sub-millivolt reference accuracy across extended industrial temperature range |
| Surface-mount compatible (DO-213AA) | Supports automated assembly and high-density PCB layouts without leads or solder wicking issues |
Applications
| High-Temperature Power Supply Reference | Precision Sensor Biasing |
|---|---|
Use Scenario: Regulating feedback voltage in DC-DC converters deployed in engine control units or downhole telemetry systems. IC Role / Device Role / Timing Role: Zener diode providing stable 6.2 V reference for error amplifier input. Use Value: Maintains ±0.5 mV reference stability from –40°C to +150°C, preventing output voltage drift beyond ±1.5%. | Use Scenario: Biasing bridge sensors in industrial pressure transducers exposed to thermal cycling. IC Role / Device Role / Timing Role: Precision voltage reference for Wheatstone bridge excitation. Use Value: Delivers <2 µA leakage and <50 Ω impedance to minimize offset error and improve ratiometric accuracy. |
| Aerospace Voltage Monitor | Military-Grade Analog Front-End |
Use Scenario: Monitoring bus voltage in satellite power distribution units requiring radiation-tolerant components. IC Role / Device Role / Timing Role: Primary reference element in overvoltage protection comparator circuit. Use Value: Hermetic DO-213AA package ensures no parametric shift after 100 krad(Si) total ionizing dose exposure. | Use Scenario: Calibrating ADC reference inputs in ruggedized field-deployable test equipment. IC Role / Device Role / Timing Role: Low-drift voltage source for 16-bit SAR ADC reference divider network. Use Value: ±0.005 %/°C TC enables <0.01% full-scale error contribution over –55°C to +125°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N823UR-1 | Same electrical specs; MIL-PRF-19500/159 qualified (JAN/JANTXV); hermetic metal-glass package | Required for space-grade or defense procurement where MIL-spec compliance is mandatory | Select when formal qualification documentation and traceability per MIL-STD-883 are required |
| CDLL825A | Lower zener impedance (19 Ω vs. 48 Ω); same VZ range and TC (±0.002 %/°C) | Better dynamic regulation for fast-transient loads; tighter TC for ultra-stable references | Choose when higher accuracy and lower noise are prioritized over cost and availability |
Compared with 1N823UR-1, CDLL823A/TR offers commercial-grade cost and lead time advantages without sacrificing core performance; compared with CDLL825A, it trades 29 Ω higher impedance for broader production availability and optimized thermal stability margin in non-critical analog paths.
Availability
CDLL823A/TR is available at Aetrix Electronics and suitable for high-reliability power supply reference, precision sensor biasing, and aerospace voltage monitoring applications requiring stable component supply across extended temperature ranges.
Supply support for CDLL823A/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
Central Semiconductor Corp. (CDI) designs and manufactures discrete semiconductors focused on high-reliability, high-temperature, and precision analog applications.
The CDLL82x series targets demanding reference and regulation roles in aerospace, defense, and industrial systems where hermetic sealing, low TC, and wide operating temperature are critical design requirements.
FAQ
What is the maximum operating temperature for CDLL823A/TR?
The CDLL823A/TR is rated for continuous operation from –65°C to +175°C. Its hermetic DO-213AA glass package and metallurgical construction enable reliable performance at the upper limit, making CDLL823A/TR suitable for downhole tools, engine compartments, and avionics enclosures where ambient temperatures exceed 150°C.
Is CDLL823A/TR compatible with standard SMT reflow profiles?
Yes, CDLL823A/TR is designed for surface-mount assembly using standard leaded reflow profiles. Its DO-213AA (SOD-80) MELF package withstands peak temperatures up to 260°C for 10 seconds, and its tin/lead termination ensures robust wetting and joint integrity without cracking or delamination during thermal cycling.
How does the temperature coefficient of CDLL823A/TR compare to standard zeners?
CDLL823A/TR has a temperature coefficient of ±0.005 %/°C - over 10× tighter than typical 5.6 V zeners (±0.05 %/°C). This is achieved via double-plug compensation and precise doping control, allowing CDLL823A/TR to maintain reference stability within ±0.5 mV over –65°C to +100°C, unlike general-purpose zeners that drift >5 mV in the same range.
What is the zener impedance of CDLL823A/TR and why does it matter?
The zener impedance of CDLL823A/TR is 48 Ω at 7.5 mA test current. This low value ensures minimal output voltage variation under changing load currents - critical for maintaining regulation accuracy in feedback loops and reference dividers. Higher impedance zeners (e.g., >200 Ω) introduce significant error under dynamic conditions, whereas CDLL823A/TR's 48 Ω supports stable performance in precision analog circuits.
Can CDLL823A/TR replace CDLL823 in an existing design?
Yes, CDLL823A/TR is a direct replacement for CDLL823 with improved specifications: lower zener impedance (48 Ω vs. 15 Ω) and tighter temperature coefficient (±0.005 %/°C vs. ±0.01 %/°C). Both share identical DO-213AA packaging, polarity, and voltage range (5.9–6.5 V), so CDLL823A/TR can be substituted without layout or schematic changes while enhancing reference stability and regulation accuracy.
CDLL823A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±4.83%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
CDLL823A/TR FAQ
1.How can I place an order for CDLL823A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for CDLL823A/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 CDLL823A/TR reliable?
The price and inventory of CDLL823A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CDLL823A/TR is usually 5 days.
3.What payment methods are accepted for CDLL823A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CDLL823A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CDLL823A/TR?
CDLL823A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CDLL823A/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 CDLL823A/TR?
For technical support, including CDLL823A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CDLL823A/TR requirements.
6.How does Aetrix verify that CDLL823A/TR is sourced from the original manufacturer or authorized distributors?
All CDLL823A/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 CDLL823A/TR meets industry standards.
7.What is the process for return or replacement of CDLL823A/TR?
All CDLL823A/TR units undergo pre-shipment inspection (PSI). If there is an issue with CDLL823A/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 CDLL823A/TR part is unused and in its original packaging.
Return procedure for CDLL823A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CDLL823A/TR Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
