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Diodes Incorporated AZ23C4V7-7-F
- Part No.:
- AZ23C4V7-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ23C4V7-7-F.pdf
- Description:
- DIODE ZENER ARRAY 4.7V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:40,413
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Product details
Overview
AZ23C4V7-7-F from Diodes Incorporated is a dual common-anode 300 mW surface-mount Zener diode with nominal zener voltage 4.7 V (4.4–5.0 V range), 78 Ω zener impedance at 5 mA, and temperature coefficient of –0.015 %/°C - used for precision voltage reference and overvoltage clamping in power supply feedback loops and I/O protection circuits.
For engineers reviewing the AZ23C4V7-7-F datasheet, AZ23C4V7-7-F pinout, AZ23C4V7-7-F application, or AZ23C4V7-7-F equivalent, key selection criteria include dual-zener matching (≤5% ΔVZ), SOT23 package compatibility, JEDEC-qualified reliability, and low-temperature-coefficient voltage regulation under 5 mA test current.
Technical Context
This dual Zener operates in common-anode configuration: both cathodes are electrically isolated, enabling independent voltage clamping or stacked reference generation. It supports reverse-biased operation only, with specified breakdown characteristics verified at TA = +25°C and pulse-tested to minimize self-heating.
Thermal resistance is 417 °C/W (junction-to-ambient, FR-4 board), and derating begins above 70°C ambient per Figure 1. The device meets AEC-Q101 (HBM 8 kV, MM 400 V) and IEC 61000-4-2 (air ±15 kV, contact ±8 kV) ESD requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 4.4–5.0 V @ IZT = 5 mA - defines usable regulation window for stable 4.7 V reference under typical bias conditions |
| Zener Impedance | 78 Ω @ IZT = 5 mA - indicates moderate dynamic resistance affecting load regulation accuracy |
| Power Dissipation | 300 mW - maximum continuous DC power handling on standard FR-4 PCB with recommended pad layout |
| Temperature Coefficient | –0.015 %/°C - enables low-drift voltage reference across –65°C to +150°C operating range |
| Reverse Leakage | <0.1 µA @ VR = 1.0 V - ensures negligible standby current in high-impedance sensing nodes |
| Package | SOT23 - industry-standard 3-pin surface-mount footprint compatible with automated placement and reflow |
Pinout & Package
Package: SOT23 - molded plastic, green compound (UL 94V-0), matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (common) | Shared anode connection for both Zener elements; must be biased negative relative to either cathode |
| Pin 2 | Cathode 1 | Zener element 1 cathode - forms first 4.7 V breakdown path when reverse-biased against Pin 1 |
| Pin 3 | Cathode 2 | Zener element 2 cathode - forms second independent 4.7 V breakdown path; ΔVZ ≤ 5% vs. Cathode 1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener matching | ΔVZ ≤ 5% between elements - enables matched reference pairs without external trimming |
| Automated insertion compatibility | SOT23 footprint with standardized land pattern (X=0.8 mm, Y=0.9 mm) - supports high-yield pick-and-place assembly |
| JEDEC-qualified reliability | AEC-Q101 qualified, HBM 8 kV / MM 400 V ESD rating - suitable for automotive and industrial environments |
| Green compliance | Lead-free, halogen-free (<900 ppm Br+Cl), antimony-free - meets RoHS 2015/863/EU and IATF 16949 manufacturing standards |
Applications
| Power Supply Feedback | I/O Level Translation |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision 4.7 V reference source for TL431-like comparator input or shunt regulator node. Use Value: Tight VZ tolerance and low TC ensure ±1% output regulation stability across temperature and line variations. |
Use Scenario: Clamping 5 V logic signals to 3.3 V microcontroller I/O pins in mixed-voltage systems. IC Role / Device Role / Timing Role: Bidirectional ESD protection and overvoltage clamp using dual cathodes referenced to separate rail domains. Use Value: Dual-element structure allows independent clamping of TX/RX lines without shared leakage paths or cross-talk. |
| Industrial Sensor Biasing | Automotive CAN Node Protection |
Use Scenario: Providing stable excitation voltage for resistive bridge sensors (e.g., pressure, strain gauges) in PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift voltage reference replacing larger discrete Zener + op-amp solutions. Use Value: –0.015 %/°C TC and 0.1 µA leakage enable sub-0.5% full-scale error over –40°C to +85°C operating range. |
Use Scenario: Protecting CAN transceiver VIO pins from load-dump transients and ESD events in body control modules. IC Role / Device Role / Timing Role: Fast-response clamping diode placed between VIO and ground, leveraging dual-Zener redundancy for fault tolerance. Use Value: 8 kV HBM rating and 300 mW surge capability meet ISO 16750-2 Pulse 5a requirements without external TVS stacking. |
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 |
|---|---|---|---|
| BZX84-C4V7,115 (Nexperia) | Single Zener, same VZ range and SOT23 package; no dual-element matching | Lacks common-anode dual configuration - requires two devices for matched pair use | Select when only one 4.7 V reference is needed and board space permits discrete placement |
| DZ23C4V7-7-F (Diodes Inc.) | Common-cathode dual Zener variant - complementary topology to AZ23 series | Requires reversed PCB layout (cathode common instead of anode common); different polarity routing | Choose when existing design uses cathode-common architecture or needs inverted biasing scheme |
Compared with BZX84-C4V7 and DZ23C4V7, AZ23C4V7-7-F uniquely delivers matched dual-anode-referenced Zeners in one SOT23, reducing component count and inter-device mismatch in feedback and clamping topologies requiring paired references.
Availability
AZ23C4V7-7-F is available at Aetrix Electronics and suitable for power supply feedback networks, industrial sensor biasing, and automotive I/O protection requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant packaging.
Supply support for AZ23C4V7-7-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 the Americas.
AZ23C4V7-7-F belongs to the AZ23 dual-Zener family, engineered specifically for high-reliability voltage reference and clamping in space-constrained, thermally demanding applications such as automotive ECUs and industrial power supplies.
FAQ
What is the maximum continuous reverse current this device can handle?
The AZ23C4V7-7-F is rated for 300 mW total power dissipation. At its nominal 4.7 V zener voltage, this corresponds to a maximum average reverse current of approximately 63.8 mA (300 mW ÷ 4.7 V). Derating applies above 70°C ambient per the published power derating curve.
Can this dual-Zener be used for bidirectional ESD protection?
No - the AZ23C4V7-7-F has a common-anode configuration and is designed for unidirectional reverse-bias operation only. For bidirectional ESD protection, a dedicated TVS array or back-to-back Zener pair (e.g., DZ23 series) is required.
Is there a recommended PCB pad layout for thermal performance?
Yes - Diodes specifies a recommended SOT23 pad layout: 0.8 mm × 0.9 mm solder pads with 1.35 mm center-to-center spacing. Thermal relief and copper pour under the package improve heat dissipation, especially critical for sustained 300 mW operation.
Does this part meet AEC-Q200 stress testing requirements?
No - AZ23C4V7-7-F is qualified to AEC-Q101 (for discrete semiconductors), not AEC-Q200 (for passive components). For AEC-Q200-compliant Zener solutions, refer to Diodes' automotive-grade Q-suffix variants like AZ23C4V7Q-7-F.
AZ23C4V7-7-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):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 78 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
AZ23C4V7-7-F FAQ
1.How can I place an order for AZ23C4V7-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ23C4V7-7-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 AZ23C4V7-7-F reliable?
The price and inventory of AZ23C4V7-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C4V7-7-F is usually 5 days.
3.What payment methods are accepted for AZ23C4V7-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C4V7-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ23C4V7-7-F?
AZ23C4V7-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ23C4V7-7-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 AZ23C4V7-7-F?
For technical support, including AZ23C4V7-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C4V7-7-F requirements.
6.How does Aetrix verify that AZ23C4V7-7-F is sourced from the original manufacturer or authorized distributors?
All AZ23C4V7-7-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 AZ23C4V7-7-F meets industry standards.
7.What is the process for return or replacement of AZ23C4V7-7-F?
All AZ23C4V7-7-F units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C4V7-7-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 AZ23C4V7-7-F part is unused and in its original packaging.
Return procedure for AZ23C4V7-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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