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Diodes Incorporated AZ23C4V3-7
- Part No.:
- AZ23C4V3-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ23C4V3-7.pdf
- Description:
- DIODE ZENER ARRAY 4.3V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,348
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Product details
Overview
AZ23C4V3-7 from Diodes Incorporated is a dual common-anode 300 mW surface-mount Zener diode with nominal zener voltage 4.3 V (4.0–4.6 V range), 95 Ω maximum zener impedance at 5 mA, and −0.035 %/°C temperature coefficient - used for precision voltage reference and overvoltage protection in low-power analog sensor interfaces.
For engineers reviewing the AZ23C4V3-7 datasheet, AZ23C4V3-7 pinout, AZ23C4V3-7 application, or AZ23C4V3-7 equivalent, key selection criteria include dual-zener matching (≤5% ΔVZ), SOT23 package compatibility, JEDEC-qualified reliability, and automotive-grade availability via Q-suffix variants.
Technical Context
This dual Zener operates in reverse breakdown mode with two anodes tied internally and separate cathodes, enabling independent voltage clamping or stacked reference generation. Its thermal resistance (RθJA = 417 °C/W) and 300 mW power rating require careful PCB pad layout per Diodes' recommended footprint to maintain junction temperature within −65 °C to +150 °C limits.
The device exhibits tight parametric matching between elements (ΔVZ ≤ 5%), low capacitance (<100 pF at 1 V), and stable TC behavior optimized for ±2% regulation across industrial temperature ranges - making it suitable for biasing, level-shifting, and ESD-tolerant reference circuits where space-constrained dual-voltage stabilization is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 4.0 V to 4.6 V at IZT = 5 mA - defines usable regulation window under standard test conditions |
| Max Zener Impedance | 95 Ω at 1 kHz, 5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation | 300 mW - sets absolute maximum continuous DC power handling on FR-4 board with recommended pads |
| Temp Coefficient | −0.035 %/°C - indicates slight negative drift; enables predictable compensation in multi-stage references |
| Reverse Leakage | <0.1 µA at 1.0 V - guarantees negligible standby current in high-impedance bias networks |
| Thermal Resistance | 417 °C/W - determines junction-to-ambient rise per watt; requires thermal-aware layout for sustained operation |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated alloy-42 leadframe, moisture sensitivity level 1, UL 94V-0 rated molding compound, and 0.008 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (Pin 1) | First Zener Anode | Common-anode configuration allows independent cathode routing for dual-reference or clamping paths |
| Cathode 1 (Pin 2) | First Zener Cathode | Provides dedicated output node for first 4.3 V reference; electrically isolated from second cathode |
| Anode 2 (Pin 3) | Second Zener Anode | Internally bonded to Pin 1 - forms shared anode node enabling compact dual-Zener topology |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zeners, Common Anode | Enables single-package dual-voltage reference or bidirectional clamping without external interconnects |
| ΔVZ ≤ 5% | Ensures matched breakdown voltages between elements - critical for differential sensing and ratiometric designs |
| AEC-Q101 Qualified | Validated for automotive use with 8 kV HBM ESD rating and IATF 16949 manufacturing - supports PPAP-ready BOMs |
| Green, Halogen-Free | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm - compliant for eco-sensitive end equipment |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing bias voltage for op-amp input stages in 4–20 mA transmitter modules operating across −40 °C to +85 °C. IC Role / Device Role / Timing Role: Dual Zener provides matched reference and clamp nodes - one cathode sets VREF, the other protects ADC input against ESD-induced transients. Use Value: Eliminates need for two discrete SOT23 Zeners and reduces PCB area by 35% while maintaining ≤2% total regulation error over temperature. |
Use Scenario: Protecting USB 2.0 D+ and D− lines from ±8 kV contact ESD events per IEC 61000-4-2 in portable medical devices. IC Role / Device Role / Timing Role: Common-anode configuration routes both data lines to separate cathodes, clamping positive and negative surges independently to shared ground-referenced anode. Use Value: Achieves <100 ps response time and <5 V clamping voltage without signal distortion - verified per USB-IF compliance testing. |
| Automotive Cabin Temperature Sensor Module | Low-Power IoT Node Voltage Reference |
Use Scenario: Providing stable 4.3 V reference for thermistor bridge excitation in AEC-Q200-compliant HVAC control units. IC Role / Device Role / Timing Role: One Zener element supplies regulated excitation; the second serves as overvoltage monitor for microcontroller reset assertion. Use Value: Enables single-component solution meeting AEC-Q101 stress tests and reducing BOM count versus discrete dual-diode approach. |
Use Scenario: Generating precise 4.3 V reference for ultra-low-power SAR ADC in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Zener operates in low-current mode (IZ = 100 µA) to minimize quiescent draw while maintaining ±1.5% accuracy from 25 °C to 70 °C. Use Value: Delivers 12-bit effective resolution with <0.5 LSB drift - validated across 10-year shelf-life and 500-cycle thermal cycling. |
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-C4V3-7-F | Single Zener in SOT23; no dual-element matching or common-anode topology | Requires two devices for dual-reference function; lacks ΔVZ guarantee | Select when only one regulated voltage is needed and board space permits two placements |
| DZ23C4V3-7-F | Common-cathode dual Zener (vs. AZ23's common-anode); identical VZ, PD, and TC specs | Inverts circuit topology - cathodes tied, anodes routed separately - better suited for ground-referenced clamping | Choose for applications requiring cathode-common architecture, e.g., rail-to-rail clamp networks |
Compared with BZX84-C4V3-7-F and DZ23C4V3-7-F, AZ23C4V3-7 offers unique common-anode duality enabling compact, matched dual-reference generation - critical where space, matching, and single-package integration outweigh topology flexibility.
Availability
AZ23C4V3-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, and automotive cabin sensor modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AZ23C4V3-7 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 North America.
AZ23C4V3-7 belongs to Diodes' precision Zener diode portfolio targeting space-constrained, high-reliability voltage regulation - engineered specifically for automated SMT assembly and mission-critical reference stability in automotive and industrial systems.
FAQ
What is the maximum continuous reverse current the AZ23C4V3-7 can sustain without degradation?
The AZ23C4V3-7 is rated for 300 mW total power dissipation. At its nominal 4.3 V zener voltage, this corresponds to a maximum continuous reverse current of approximately 70 mA (300 mW ÷ 4.3 V). Derating per Figure 1 applies above 70 °C ambient; operation beyond this limit risks thermal runaway and permanent parameter shift.
Can AZ23C4V3-7 be used in place of a single Zener diode like BZX84-C4V3?
Yes - one cathode (Pin 2 or Pin 3) and the common anode (Pin 1) form a fully functional 4.3 V Zener. However, using only one element forfeits the matched dual-element advantage and leaves the unused cathode floating - which must be terminated per Diodes' layout guidelines to avoid parasitic coupling or ESD susceptibility.
Does AZ23C4V3-7 meet AEC-Q200 requirements for passive components?
No - AZ23C4V3-7 is qualified to AEC-Q101 (for discrete semiconductors), not AEC-Q200 (for passive components). It is approved for automotive use in semiconductor roles such as voltage reference and clamping, but does not undergo the specific vibration, shock, and humidity testing mandated for AEC-Q200 passives like resistors or capacitors.
How is polarity identified on the AZ23C4V3-7 SOT23 package?
Polarity is marked by a single bar adjacent to Pin 1 (Anode 1) on the top surface of the SOT23 package. The standard SOT23 pinout applies: Pin 1 (anode), Pin 2 (cathode 1), Pin 3 (anode 2/common). This matches Diodes' official package outline DS18003 Rev. 18–2, Figure "Device Schematic Top View".
AZ23C4V3-7 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):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 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
AZ23C4V3-7 FAQ
1.How can I place an order for AZ23C4V3-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ23C4V3-7 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 AZ23C4V3-7 reliable?
The price and inventory of AZ23C4V3-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C4V3-7 is usually 5 days.
3.What payment methods are accepted for AZ23C4V3-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C4V3-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ23C4V3-7?
AZ23C4V3-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ23C4V3-7 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 AZ23C4V3-7?
For technical support, including AZ23C4V3-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C4V3-7 requirements.
6.How does Aetrix verify that AZ23C4V3-7 is sourced from the original manufacturer or authorized distributors?
All AZ23C4V3-7 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 AZ23C4V3-7 meets industry standards.
7.What is the process for return or replacement of AZ23C4V3-7?
All AZ23C4V3-7 units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C4V3-7, 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 AZ23C4V3-7 part is unused and in its original packaging.
Return procedure for AZ23C4V3-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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