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Diodes Incorporated DZ23C22-7
- Part No.:
- DZ23C22-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DZ23C22-7.pdf
- Description:
- DIODE ZENER ARRAY 22V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,462
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Product details
Overview
DZ23C22-7 from Diodes Incorporated is a dual common-cathode 22 V Zener diode pair in SOT23 package, rated for 300 mW total power dissipation, with ±5% matching between zener voltages and 55 Ω typical zener impedance at 5 mA. It serves voltage reference and overvoltage protection functions in compact DC-DC feedback loops and dual-rail power monitoring circuits.
For engineers reviewing the DZ23C22-7 datasheet, DZ23C22-7 pinout, DZ23C22-7 application, or DZ23C22-7 equivalent, key selection criteria include matched dual-zener tolerance, thermal resistance (417 °C/W), JEDEC-qualified reliability, and SOT23-compatible automated assembly compatibility.
Technical Context
This dual zener operates in reverse breakdown mode with two anodes sharing one cathode terminal, enabling independent regulation of two voltage rails from a single footprint. Its matched VZ drift (±5%) and low TC (+0.090 %/°C) support precision biasing in temperature-stable analog front-ends.
The device uses alloy 42 lead frame with matte tin plating, meets J-STD-020 Level 1 moisture sensitivity, and is qualified to JEDEC high-reliability standards-making it suitable for industrial-grade power management where long-term parametric stability is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 20.8–23.3 V at IZT = 5 mA; defines regulated output voltage range under nominal test conditions |
| Power Dissipation | 300 mW total; limits combined continuous power handling across both diodes on FR4 PCB |
| Zener Impedance | 55 Ω typical at 5 mA; determines AC ripple rejection and regulation stiffness in feedback paths |
| Voltage Matching | ≤5% ΔVZ between diodes; enables accurate dual-rail referencing without trimming |
| Thermal Resistance | 417 °C/W junction-to-ambient; sets maximum allowable ambient temperature rise at full power |
| Operating Temp | −65 to +150 °C; supports extended-range industrial and automotive under-hood applications |
Pinout & Package
Package: SOT23 - surface-mount plastic case with 3 terminals, 0.008 g mass, UL 94V-0 flammability rating, and matte tin-plated alloy 42 leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (Pin 1) | First Zener Anode | Reverse-biased input for first 22 V zener; connects to regulated rail 1 |
| Cathode (Pin 2) | Common Cathode | Shared cathode node for both zeners; ties to system ground or reference potential |
| Anode 2 (Pin 3) | Second Zener Anode | Reverse-biased input for second 22 V zener; connects to regulated rail 2 |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode configuration | Enables space-efficient dual-voltage referencing without discrete cathode routing |
| ≤5% inter-diode VZ matching | Eliminates need for post-assembly calibration in matched reference designs |
| JEDEC-qualified high reliability | Validated for long-term operation in industrial environments per AEC-Q stress protocols |
| SOT23 tape-and-reel packaging | Supports high-speed pick-and-place assembly with 3000-unit reels |
Applications
| DC-DC Converter Feedback | Dual-Rail Power Monitor |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Dual zener provides precise, matched reference thresholds for primary-side controller error amplification. Use Value: Tight VZ matching ensures consistent regulation across input line and load transients without secondary-side compensation. |
Use Scenario: Monitoring undervoltage/overvoltage conditions on ±15 V analog supply rails in instrumentation amplifiers. IC Role / Device Role / Timing Role: Each zener independently clamps its rail to 22 V while sharing cathode grounding. Use Value: Single-component dual-channel protection reduces BOM count and layout area versus discrete zener pairs. |
| Temperature-Stable Bias Network | Industrial Sensor Excitation |
Use Scenario: Generating stable bias currents for precision op-amp input stages operating across −40 to +85 °C. IC Role / Device Role / Timing Role: Paired zeners deliver matched reference voltages to current-setting resistors in differential amplifier legs. Use Value: +0.090 %/°C TC and matched drift minimize offset drift over temperature in metrology-grade signal chains. |
Use Scenario: Providing excitation voltage to bridge-based pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: One zener regulates sensor bridge supply; the other references ADC input range for ratiometric conversion. Use Value: Common-cathode topology ensures identical thermal environment for both references, improving ratiometric accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX79-C22 (ON Semi) | Single 22 V zener in DO-35; no dual configuration or voltage matching spec | Requires two devices and external matching for dual-rail use; higher board area | Select when only single-rail reference is needed and cost-per-device is prioritized |
| DZ23C24-7 | 24 V nominal zener pair; 22.8–25.6 V range; same package and matching spec | Used where higher reference voltage improves noise margin in 24 V systems | Choose for 24 V rail monitoring where tighter headroom above 22 V is required |
Compared with BZX79-C22 and DZ23C24-7, DZ23C22-7 uniquely delivers matched 22 V dual-zener performance in a single SOT23 footprint-enabling compact, thermally coupled referencing unattainable with discrete or non-matched alternatives.
Availability
DZ23C22-7 is available at Aetrix Electronics and suitable for DC-DC converter feedback, dual-rail power monitoring, and temperature-stable bias networks requiring stable component supply and JEDEC-qualified reliability.
Supply support for DZ23C22-7 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 power management and signal integrity solutions for industrial and automotive markets.
DZ23C22-7 belongs to the DZ23C series of dual common-cathode Zener diodes, designed specifically for space-constrained applications needing matched voltage references with automated assembly compatibility and extended temperature operation.
FAQ
What is the maximum continuous power dissipation for DZ23C22-7?
DZ23C22-7 has a total power dissipation rating of 300 mW across both zener elements when mounted on an FR4 PCB with recommended pad layout. Derating begins above 25 °C ambient per the published power derating curve, reaching zero dissipation at approximately 150 °C ambient.
How is the "common cathode" configuration implemented physically in the SOT23 package?
In the SOT23 package, Pin 2 is the shared cathode terminal electrically connected to both internal zener junctions, while Pin 1 and Pin 3 serve as independent anodes. This allows each zener to be reverse-biased separately against the same reference node without internal series resistance or isolation.
Does DZ23C22-7 meet automotive qualification requirements?
The commercial-grade DZ23C22-7 is JEDEC-qualified but not AEC-Q200 certified. For automotive applications, Diodes offers the Q-suffix variant DZ23C22Q-7-F, which is manufactured in IATF 16949-certified facilities and qualified to AEC-Q200 standards.
Can DZ23C22-7 replace two separate 1N4742A diodes in a design?
No-DZ23C22-7 cannot directly replace two discrete 1N4742A diodes because it uses a common-cathode configuration, whereas 1N4742A is single-anode/single-cathode. Replacing requires circuit redesign to route both anodes to separate nodes while tying cathodes together, or selecting a common-anode dual zener like AZ23C22.
DZ23C22-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Configuration:
- 1 Pair Common Cathode
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DZ23C22-7 FAQ
1.How can I place an order for DZ23C22-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DZ23C22-7 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 DZ23C22-7 reliable?
The price and inventory of DZ23C22-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZ23C22-7 is usually 5 days.
3.What payment methods are accepted for DZ23C22-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZ23C22-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DZ23C22-7?
DZ23C22-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DZ23C22-7 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 DZ23C22-7?
For technical support, including DZ23C22-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZ23C22-7 requirements.
6.How does Aetrix verify that DZ23C22-7 is sourced from the original manufacturer or authorized distributors?
All DZ23C22-7 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 DZ23C22-7 meets industry standards.
7.What is the process for return or replacement of DZ23C22-7?
All DZ23C22-7 units undergo pre-shipment inspection (PSI). If there is an issue with DZ23C22-7, 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 DZ23C22-7 part is unused and in its original packaging.
Return procedure for DZ23C22-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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