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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Zener Diode Arrays

Diodes Incorporated AZ23C11-7

Name: AZ23C11-7
Brand: Diodes Incorporated
SKU: AZ23C11-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AZ23C11-7

Manufacturer:: Diodes Incorporated

Category:: Zener Diode Arrays

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: AZ23C11-7.pdf

Description:: DIODE ZENER ARRAY 11V SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:4,339

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Product details

Overview

AZ23C11-7 from Diodes Incorporated is a dual common-anode 300mW surface-mount Zener diode with nominal zener voltage 11V (10.4–11.6V range), ±5% matching between diodes, and 20Ω typical zener impedance at 5mA. It operates from −65°C to +150°C and is used for precision voltage reference and overvoltage protection in power supply feedback loops.

For engineers reviewing the AZ23C11-7 datasheet, AZ23C11-7 pinout, AZ23C11-7 application, or AZ23C11-7 equivalent, key selection criteria include matched dual-zener tolerance, thermal resistance (417°C/W), JEDEC-qualified reliability, SOT23 footprint compatibility, and automotive-grade availability (Q-suffix variants).

Technical Context

This dual-Zener device integrates two identical zener elements sharing a common anode terminal, enabling bidirectional clamping or dual-reference generation in compact space-constrained designs. Its matched V_Z deviation ≤5% supports differential sensing and rail-to-rail voltage monitoring.

The device uses a molded green plastic SOT23 package with matte tin-plated Alloy 42 leadframe, rated for 8kV HBM ESD, and complies with AEC-Q101 for automotive use when ordered as AZ23C11Q-7-F. Thermal derating begins above 25°C per the published curve.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage Range	10.4–11.6 V at I_ZT = 5 mA - defines stable regulation window for feedback or clamp circuits
Max Power Dissipation	300 mW - limits continuous current to ~27 mA at 11 V without heatsinking
Zener Impedance	20 Ω typical at 5 mA - determines output voltage stability under load transients
Temperature Coefficient	+0.070 %/°C - indicates positive drift; requires compensation in high-precision references
Min Reverse Voltage	8.5 V at I_R = 0.1 µA - ensures reliable turn-on before breakdown threshold
Operating Temp Range	−65°C to +150°C - supports industrial and under-hood automotive environments
ESD Rating (HBM)	8 kV - enables handling without special ESD controls in assembly

Pinout & Package

Package: SOT23 - 3-pin surface-mount plastic package, 2.9 mm × 1.3 mm × 1.0 mm, moisture sensitivity level 1, UL 94V-0 rated.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode)	Common Anode	Shared cathode return path for both zener elements; connects to ground or low-side reference
Pin 2 (Cathode 1)	Zener 1 Cathode	First zener element's cathode; reverse-biased to regulate/clamp at 11 V
Pin 3 (Cathode 2)	Zener 2 Cathode	Second zener element's cathode; identical to Pin 2 for matched dual operation

Key Features

Feature	Design Value
Dual Zeners, Common Anode	Enables symmetrical voltage clamping or dual-reference generation in single footprint
V_Z Matching ≤5%	Supports differential sensing and ratiometric error detection without external trimming
300 mW Power Rating	Allows direct integration into low-power SMPS feedback paths without external series resistors
AEC-Q101 Qualified (Q-suffix)	Validated for automotive applications including engine control and body electronics
Green, Halogen-Free Construction	Meets RoHS 3 (2015/863/EU) and automotive sustainability requirements

Applications

Power Supply Feedback

Overvoltage Protection

Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback.

IC Role / Device Role / Timing Role: Dual zener provides precise 11 V reference for TL431-like shunt regulator circuitry.

Use Value: Matched V_Z ensures consistent loop gain across production units; SOT23 saves PCB area vs. discrete dual-diode solutions.

Use Scenario: Protecting microcontroller I/O pins from transient surges on 12 V automotive bus lines.

IC Role / Device Role / Timing Role: Clamps positive excursions above 11 V while allowing normal 0–5 V logic swing.

Use Value: Common-anode configuration simplifies layout by sharing ground return; 8 kV HBM withstands ESD events without additional TVS.

Differential Voltage Sensing

Reference Voltage Generation

Use Scenario: Monitoring battery cell imbalance in 12 V Li-ion packs using paired voltage dividers.

IC Role / Device Role / Timing Role: Two matched zeners serve as stable reference points for comparator inputs.

Use Value: ≤5% V_Z matching eliminates need for calibration; wide temperature range maintains accuracy across vehicle operating conditions.

Use Scenario: Providing stable bias voltage for analog front-end amplifiers in industrial sensor modules.

IC Role / Device Role / Timing Role: Supplies 11 V reference to op-amp bias networks and ADC reference buffers.

Use Value: Low 20 Ω zener impedance minimizes noise coupling; +0.070 %/°C TC allows predictable drift compensation in firmware.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX79-C11 (Nexperia)	Single 11 V Zener in DO-35; no dual-element or matching spec	Requires two devices and board space for matching; lacks common-anode convenience	Select only if cost or legacy DO-35 footprint is mandatory
DZ23C11-7 (Diodes Inc.)	Common-cathode dual Zener; same V_Z range but inverted polarity configuration	Suitable for high-side clamp or current-source bias where cathode must be tied to supply rail	Choose when circuit topology requires common-cathode connection instead of common-anode

Compared with BZX79-C11 and DZ23C11-7, AZ23C11-7 uniquely delivers matched dual-zener performance in a space-saving common-anode SOT23 package-enabling tighter layout control, reduced component count, and simplified thermal management in modern power and protection circuits.

Availability

AZ23C11-7 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and differential voltage sensing requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant packaging.

Supply support for AZ23C11-7 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

The AZ23 series belongs to Diodes' precision Zener diode product line, engineered for voltage regulation, reference, and protection in space-constrained industrial, computing, and automotive systems.

FAQ

What is the maximum continuous zener current for AZ23C11-7 at 25°C?

At 25°C ambient, the maximum continuous zener current is approximately 27.3 mA, calculated from P_D = 300 mW ÷ V_Z (11 V). Derating applies above 25°C per the published power derating curve-e.g., at 85°C ambient, max power drops to ~180 mW, limiting current to ~16.4 mA.

Does AZ23C11-7 support automotive qualification?

Yes-when ordered as AZ23C11Q-7-F, it is fully qualified to AEC-Q101, manufactured in IATF 16949-certified facilities, and PPAP-capable. The Q-suffix variant undergoes extended reliability testing including HTOL, TCT, and ESD per AEC standards, making it suitable for engine control, ADAS, and body electronics.

How is polarity identified on the SOT23 package?

Polarity is marked by a bar on the top surface near Pin 1 (common anode). The standard SOT23 pinout is: Pin 1 = common anode, Pin 2 = cathode of first zener, Pin 3 = cathode of second zener. The device schematic in DS18003 Rev. 18-2 confirms this orientation with the anode symbol centered between two cathodes.

Can AZ23C11-7 replace single-zener diodes in existing designs?

It can replace two discrete 11 V Zeners in common-anode configurations, reducing component count and improving matching. However, it cannot substitute a single-zener part without modifying the circuit topology-e.g., a common-cathode design would require DZ23C11-7 instead, and pinout rework is necessary due to different terminal assignments.

AZ23C11-7 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 Anode

Voltage - Zener (Nom) (Vz):: 11 V

Tolerance:: ±5%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 20 Ohms

Current - Reverse Leakage @ Vr:: -

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

AZ23C11-7 FAQ

1.How can I place an order for AZ23C11-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AZ23C11-7 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 AZ23C11-7 reliable?

The price and inventory of AZ23C11-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C11-7 is usually 5 days.

3.What payment methods are accepted for AZ23C11-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C11-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AZ23C11-7?

AZ23C11-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AZ23C11-7 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 AZ23C11-7?

For technical support, including AZ23C11-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C11-7 requirements.

6.How does Aetrix verify that AZ23C11-7 is sourced from the original manufacturer or authorized distributors?

All AZ23C11-7 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 AZ23C11-7 meets industry standards.

7.What is the process for return or replacement of AZ23C11-7?

All AZ23C11-7 units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C11-7, 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 AZ23C11-7 part is unused and in its original packaging.

Return procedure for AZ23C11-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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