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

Diodes Incorporated AZ23C20-7-F

Name: AZ23C20-7-F
Brand: Diodes Incorporated
SKU: AZ23C20-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AZ23C20-7-F

Manufacturer:: Diodes Incorporated

Category:: Zener Diode Arrays

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

Datasheet:: AZ23C20-7-F.pdf

Description:: DIODE ZENER ARRAY 20V SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:8,804

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Product details

Overview

AZ23C20-7-F from Diodes Incorporated is a dual common-anode Zener diode in SOT23 package, rated for 300 mW total power dissipation, with nominal Zener voltage 20 V (18.8–21.2 V range at 5 mA), ±5% matching between diodes, and temperature coefficient +0.090 %/°C. It provides precision voltage reference and overvoltage clamping in space-constrained power management circuits.

For engineers reviewing the AZ23C20-7-F datasheet, AZ23C20-7-F pinout, AZ23C20-7-F application, or AZ23C20-7-F equivalent, key selection criteria include matched dual-Zener tolerance, low 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 tied internally and separate cathodes, enabling independent voltage regulation or bidirectional clamping from a single package. Its matched V_Z deviation ≤5% supports differential reference or redundant protection schemes.

Thermal derating follows a linear curve to zero power at 150 °C ambient, and junction-to-ambient thermal resistance is specified at 417 °C/W on FR-4 PCB with recommended pad layout. Reverse leakage remains ≤0.1 µA up to 15 V, ensuring low standby current in sensing paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	18.8–21.2 V at I_ZT = 5 mA - defines stable regulation window for 20 V nominal systems
Power Dissipation (P_D)	300 mW - limits continuous clamp energy in transient suppression applications
Zener Impedance (Z_ZT)	50 Ω at 5 mA - determines output voltage stability under load variation
Temperature Coefficient	+0.090 %/°C - quantifies V_Z drift over industrial temperature range (−65 to +150 °C)
Max Matching Tolerance	≤5% ΔV_Z between diodes - enables matched reference pairs without external trimming
Reverse Leakage (I_R)	≤0.1 µA at 15 V - ensures minimal quiescent current in battery-backed monitoring circuits

Pinout & Package

Package: SOT23 - surface-mount plastic package with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rating, and 0.008 g typical weight.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode 1	Common anode connection for first Zener element; tied internally to Pin 3
Pin 2	Cathode 1	Independent cathode for first Zener; used for 20 V regulation or clamping path
Pin 3	Anode 2 / Common Anode	Shared anode node for both Zeners; electrically identical to Pin 1
Pin 4	Cathode 2	Independent cathode for second Zener; enables dual-channel reference or redundancy

Key Features

Feature	Design Value
Dual common-anode configuration	Enables compact dual-voltage reference or symmetrical overvoltage clamp without external wiring
≤5% inter-diode V_Z matching	Eliminates need for post-assembly calibration in matched reference designs
JEDEC-qualified high-reliability construction	Validated per AEC-Q101 (HBM 8 kV, MM 400 V) and IEC 61000-4-2 (air 15 kV, contact 8 kV)
SOT23 footprint compatibility	Supports automated pick-and-place and reflow soldering with standard industry land patterns
Halogen- and antimony-free "Green" compound	Meets RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm

Applications

Industrial Power Monitoring

Automotive ECU Reference

Use Scenario: Real-time rail voltage supervision in programmable logic controllers with dual ADC inputs.

IC Role / Device Role / Timing Role: Dual Zener provides matched 20 V reference for differential ADC offset calibration and overvoltage lockout trigger.

Use Value: ≤5% V_Z matching eliminates channel-to-channel gain error; 300 mW rating sustains 100 ms transients without thermal runaway.

Use Scenario: Stable reference for microcontroller analog peripherals in engine control units exposed to −40 to +125 °C ambient.

IC Role / Device Role / Timing Role: Supplies regulated bias to sensor signal conditioning circuitry and ADC reference buffer.

Use Value: +0.090 %/°C TC ensures <±1.2% total V_Z drift across full automotive temperature range.

Medical Sensor Interface

IoT Edge Node Protection

Use Scenario: Precision voltage reference for low-power biosignal amplifiers in portable diagnostic devices.

IC Role / Device Role / Timing Role: Dual Zener delivers noise-immune 20 V supply for op-amp biasing and ADC reference generation.

Use Value: 50 Ω Z_ZT minimizes reference noise coupling; 0.1 µA I_R preserves battery life in sleep mode.

Use Scenario: Overvoltage clamping on RS-485 data lines and MCU I/O pins in smart metering endpoints.

IC Role / Device Role / Timing Role: Provides bidirectional transient suppression using both Zener elements in back-to-back configuration.

Use Value: Common-anode topology allows single-device bidirectional clamping without polarity constraints.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C20LT1G	Single Zener, same 20 V rating and SOT23 package, but no dual-element or matching spec	Lacks matched dual-channel capability; suitable only for single-reference use cases	Select when only one regulated voltage is needed and board area permits discrete placement
DZ23C20-7-F	Common-cathode dual Zener variant; identical V_Z range and power rating but inverted terminal polarity	Requires PCB layout revision to accommodate cathode-common topology instead of anode-common	Choose when existing design uses common-cathode routing or requires inverted clamping polarity

Compared with BZX84-C20LT1G and DZ23C20-7-F, AZ23C20-7-F uniquely delivers matched dual-anode Zeners in one SOT23 device-enabling compact differential references or redundant clamping without layout compromise or performance trade-offs.

Availability

AZ23C20-7-F is available at Aetrix Electronics and suitable for industrial power monitoring, automotive ECU reference, and medical sensor interface applications requiring stable component supply, JEDEC-qualified reliability, and SOT23-compatible automated assembly.

Supply support for AZ23C20-7-F 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 North America.

AZ23C20-7-F belongs to the AZ23 series of dual Zener diodes engineered for high-precision voltage reference and transient suppression in space-constrained, high-reliability applications across industrial, automotive, and medical end markets.

FAQ

What is the maximum continuous Zener current for AZ23C20-7-F at 25°C?

The maximum continuous Zener current is derived from P_D = 300 mW and V_Z ≈ 20 V, yielding I_Z(max) ≈ 15 mA at 25°C ambient. Derating applies above 25°C per the linear power curve in Figure 1, reaching zero at 150°C.

Can AZ23C20-7-F be used for bidirectional ESD protection?

No-AZ23C20-7-F is a dual common-anode Zener, not a bidirectional TVS. While it can clamp positive transients on each cathode relative to the common anode, it lacks symmetric breakdown in both polarities. For true bidirectional ESD protection, a dedicated TVS array like D3V3F1U2UP is required.

Is AZ23C20-7-F qualified for automotive applications?

The commercial-grade AZ23C20-7-F is not AEC-Q200 qualified. Diodes offers automotive-grade variants with Q-suffix (e.g., AZ23C20Q-7-F), which undergo PPAP, are manufactured in IATF 16949 facilities, and meet AEC-Q101 stress testing requirements.

How does the 5% matching specification apply to actual production units?

The ≤5% ΔV_Z is measured between the two Zener elements within the same device at I_ZT = 5 mA and T_A = 25°C. It is guaranteed by Diodes' binning process and verified during final test-not a statistical yield figure-ensuring every shipped unit meets this matching limit.

AZ23C20-7-F 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:: Active

Configuration:: 1 Pair Common Anode

Voltage - Zener (Nom) (Vz):: 20 V

Tolerance:: ±5%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 50 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

AZ23C20-7-F FAQ

1.How can I place an order for AZ23C20-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for AZ23C20-7-F 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 AZ23C20-7-F reliable?

The price and inventory of AZ23C20-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C20-7-F is usually 5 days.

3.What payment methods are accepted for AZ23C20-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C20-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AZ23C20-7-F?

AZ23C20-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AZ23C20-7-F 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 AZ23C20-7-F?

For technical support, including AZ23C20-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C20-7-F requirements.

6.How does Aetrix verify that AZ23C20-7-F is sourced from the original manufacturer or authorized distributors?

All AZ23C20-7-F 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 AZ23C20-7-F meets industry standards.

7.What is the process for return or replacement of AZ23C20-7-F?

All AZ23C20-7-F units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C20-7-F, 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 AZ23C20-7-F part is unused and in its original packaging.

Return procedure for AZ23C20-7-F:

1.Submit a request within 90 days.

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

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