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Diodes Incorporated AZ23C47-7-F
- Part No.:
- AZ23C47-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ23C47-7-F.pdf
- Description:
- DIODE ZENER ARRAY 47V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,995
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Product details
Overview
AZ23C47-7-F from Diodes Incorporated is a dual common-anode 300 mW surface-mount Zener diode with nominal Zener voltage 47 V (44–50 V range), ±5% matching between diodes, and 750 Ω maximum Zener impedance at 1 mA. 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 AZ23C47-7-F datasheet, AZ23C47-7-F pinout, AZ23C47-7-F application, or AZ23C47-7-F equivalent, this dual Zener supports matched-clamp designs in isolated DC-DC converters, rail-to-rail voltage monitoring circuits, and dual-threshold detection systems where thermal tracking and low leakage (<0.1 µA at 35 V) are critical.
Technical Context
This device integrates two Zener diodes sharing a common anode terminal in a single SOT23 package, enabling compact dual-reference or symmetrical clamping without discrete pairing. Its matched voltage tolerance (≤5% ΔVZ) and stable temperature coefficient (+0.110 %/°C) support tightly coupled regulation paths.
Designed for automated assembly and high-reliability industrial use, it meets JEDEC reliability standards, features halogen/antimony-free "Green" molding compound (UL 94V-0), and carries AEC-Q101 qualification readiness via automotive-grade variants (Q-suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 44 V to 50 V at IZT = 1 mA - defines usable clamping window under standard test conditions |
| Max Zener Impedance | 750 Ω at IZK = 1 mA - limits regulation error under light-load transient conditions |
| Power Dissipation | 300 mW - sets absolute thermal limit on PCB with recommended pad layout |
| Temp Coefficient | +0.110 %/°C - quantifies voltage drift per degree Celsius above 25 °C |
| Reverse Leakage | <0.1 µA at 35 V - ensures minimal standby current in high-impedance sensing nodes |
| Operating Temp | −65 °C to +150 °C - supports extended-range industrial and under-hood automotive environments |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, weight 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Common Anode Node | Shared cathode return path for both Zeners; connects to system ground or reference node |
| Cathode A (Pin 2) | Zener A Cathode | First Zener output; reverse-biased to clamp or regulate at 44–50 V |
| Cathode B (Pin 3) | Zener B Cathode | Second Zener output; enables matched dual-threshold or redundancy configuration |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener, Common Anode | Enables space-efficient dual-reference generation with intrinsic thermal tracking |
| ≤5% ΔVZ Matching | Guarantees tight voltage correlation between diodes for differential or redundant sensing |
| 300 mW Power Rating | Supports sustained clamping in 5–10 mA feedback paths without derating below 70 °C ambient |
| AEC-Q101 Ready | Validated HBM ESD rating (8 kV), MM (400 V), and IEC 61000-4-2 (Air 15 kV / Contact 8 kV) |
| Halogen/Antimony-Free | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500 ppm and Sb <1000 ppm - compliant for green manufacturing |
Applications
| Switch-Mode Power Supply Feedback | Isolated DC-DC Output Monitoring |
|---|---|
Use Scenario: Regulating secondary-side output voltage in flyback or forward converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Dual Zener provides matched reference and overvoltage clamp on TL431 cathode path. Use Value: Eliminates need for two separate Zeners, reducing BOM count and improving thermal tracking of reference thresholds. |
Use Scenario: Detecting overvoltage on isolated 48 V telecom rails before enabling downstream load switches. IC Role / Device Role / Timing Role: One Zener clamps at 47 V; second acts as backup threshold detector with identical tempco. Use Value: Enables fault-tolerant monitoring with <5% inter-diode VZ mismatch, minimizing false trips across temperature. |
| Rail-to-Rail Voltage Supervisor | Industrial Sensor Signal Conditioning |
Use Scenario: Monitoring dual supply rails (e.g., ±15 V analog stages) for undervoltage/overvoltage faults. IC Role / Device Role / Timing Role: Common-anode configuration allows independent cathode connections to each rail's sense node. Use Value: Single-component solution replaces two discrete Zeners while maintaining matched breakdown behavior. |
Use Scenario: Protecting ADC inputs from transients in 4–20 mA loop-powered sensor interfaces. IC Role / Device Role / Timing Role: Clamps input to 47 V during surge events; low leakage preserves signal integrity at rest. Use Value: 0.1 µA max reverse leakage at 35 V prevents loading of high-impedance sensor outputs. |
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-C47,113 | Single Zener, DO-35 through-hole, 500 mW, 44–50 V, no matching spec | Requires two devices for dual function; lacks thermal coupling and ΔVZ guarantee | Choose only when through-hole mounting or higher power (>300 mW) is mandatory |
| DZ23C47-7-F | Dual Zener, common cathode configuration, same SOT23 package, identical VZ range | Reverses polarity logic - cathodes shared instead of anodes; requires PCB layout change | Select when circuit topology favors common-cathode biasing (e.g., NPN-based shunt regulators) |
Compared with BZX79-C47,113 and DZ23C47-7-F, AZ23C47-7-F uniquely delivers matched dual-Zener performance in a common-anode SOT23 footprint - essential for compact, thermally coupled reference and clamp functions where layout symmetry matters.
Availability
AZ23C47-7-F is available at Aetrix Electronics and suitable for switch-mode power supply feedback, isolated DC-DC output monitoring, and rail-to-rail voltage supervisor applications requiring stable component supply, matched Zener characteristics, and industrial temperature operation.
Supply support for AZ23C47-7-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, specializing in high-reliability components for industrial, computing, and automotive markets.
AZ23C47-7-F belongs to the AZ23 series of dual Zener diodes, designed specifically for space-constrained, thermally demanding applications requiring matched voltage references and robust ESD performance.
FAQ
What is the maximum continuous Zener current for AZ23C47-7-F at 25°C?
The device is rated for 300 mW total power dissipation. At 47 V nominal Zener voltage, this corresponds to approximately 6.4 mA maximum continuous current (300 mW ÷ 47 V). Derating begins above 70°C ambient per the published power derating curve.
Does AZ23C47-7-F support automotive qualification?
The base part is not automotive-qualified, but Diodes offers a pin-compatible Q-suffix variant (AZ23C47-Q-7-F) qualified to AEC-Q101, manufactured in IATF 16949 facilities, and PPAP-capable - available upon request for automotive design-in.
How is polarity identified on the SOT23 package?
The SOT23 package uses standard Diodes Incorporated top-marking: "31" denotes AZ23C47. Pin 1 (anode) is located at the end with the cathode band indicator (notch or beveled edge); pins are numbered counter-clockwise with Pin 1 at bottom-left when marking faces up.
Can AZ23C47-7-F replace a single 47 V Zener in existing designs?
Yes - one cathode (Pin 2 or Pin 3) can be used independently while leaving the other cathode unconnected. The unused cathode exhibits typical Zener leakage (<0.1 µA), introducing negligible error in most reference applications.
AZ23C47-7-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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 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
AZ23C47-7-F FAQ
1.How can I place an order for AZ23C47-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ23C47-7-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 AZ23C47-7-F reliable?
The price and inventory of AZ23C47-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C47-7-F is usually 5 days.
3.What payment methods are accepted for AZ23C47-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C47-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ23C47-7-F?
AZ23C47-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ23C47-7-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 AZ23C47-7-F?
For technical support, including AZ23C47-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C47-7-F requirements.
6.How does Aetrix verify that AZ23C47-7-F is sourced from the original manufacturer or authorized distributors?
All AZ23C47-7-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 AZ23C47-7-F meets industry standards.
7.What is the process for return or replacement of AZ23C47-7-F?
All AZ23C47-7-F units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C47-7-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 AZ23C47-7-F part is unused and in its original packaging.
Return procedure for AZ23C47-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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