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Diodes Incorporated AZ23C15-7-F
- Part No.:
- AZ23C15-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ23C15-7-F.pdf
- Description:
- DIODE ZENER ARRAY 15V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,465
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Product details
Overview
AZ23C15-7-F from Diodes Incorporated is a dual common-anode 300 mW surface-mount Zener diode pair with nominal Zener voltage 15 V (13.8–15.6 V range), ±5% matching between diodes, and temperature coefficient +0.080 %/°C - used for precision voltage reference and overvoltage clamping in power supply feedback loops.
For engineers reviewing the AZ23C15-7-F datasheet, AZ23C15-7-F pinout, AZ23C15-7-F application, or AZ23C15-7-F equivalent, key selection criteria include matched Zener voltage tolerance, low thermal resistance (417 °C/W), SOT23 package compatibility with automated assembly, and AEC-Q101 qualification readiness via Q-suffix variants.
Technical Context
This dual Zener operates in reverse breakdown mode with two anodes tied internally and separate cathodes - enabling independent regulation or symmetrical clamping in single-supply systems. Each diode is characterized at IZT = 5.0 mA with ZZT = 30 Ω and IZK = 1.0 mA defining knee current.
Thermal derating begins above 25 °C ambient per Fig. 1, with full 300 mW dissipation only at TA ≤ 50 °C on FR-4 PCB using recommended pad layout. Reverse leakage remains ≤ 0.1 µA at VR = 11.0 V, supporting low-power standby regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 13.8 V to 15.6 V at IZT = 5.0 mA - defines usable regulation window under standard test conditions |
| Power Dissipation | 300 mW maximum - sets absolute DC/average power limit before thermal shutdown or degradation |
| Zener Impedance | 30 Ω at IZT = 5.0 mA - determines output voltage stability under load current variation |
| Temperature Coefficient | +0.080 %/°C - quantifies voltage drift magnitude per degree Celsius change in junction temperature |
| Max Matching Tolerance | ≤ 5% ΔVZ between diodes - ensures balanced clamping or reference tracking in dual-path circuits |
| Reverse Leakage | ≤ 0.1 µA at VR = 11.0 V - guarantees minimal quiescent current in high-impedance bias networks |
Pinout & Package
Package: SOT23 - 3-pin 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 of Diode 1 | Common anode node shared with Pin 3 - connects to ground or negative rail in shunt regulator configuration |
| Pin 2 | Cathode of Diode 1 | Regulated output node for first Zener - ties to feedback point in switching converter error amplifier |
| Pin 3 | Anode of Diode 2 | Internally bonded to Pin 1 - enables dual-anode topology without external wiring |
| Pin 4 | Cathode of Diode 2 | Independent regulated output for second Zener - supports dual-rail sensing or redundancy |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zeners, Common Anode | Enables compact dual-voltage reference or bidirectional clamping without discrete interconnects |
| 300 mW Power Rating | Supports sustained regulation up to ~20 mA at 15 V without heatsinking on standard FR-4 PCB |
| ≤ 5% Inter-Diode VZ Match | Permits accurate differential sensing or matched overvoltage thresholds in safety-critical monitoring |
| AEC-Q101 Qualified Variant Available | Q-suffix versions meet automotive stress testing requirements including HBM ESD ≥ 8 kV |
| Halogen & Antimony Free | Complies with "Green" definition: Br+Cl < 1500 ppm, Sb < 1000 ppm - meets global environmental directives |
Applications
| Switching Power Supply Feedback | Overvoltage Protection Circuit |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or forward converters via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Shunt reference providing stable 15 V threshold to TL431-like controller input. Use Value: Tight VZ matching ensures consistent trip point across dual-rail supplies; low ZZT minimizes loop gain variation. |
Use Scenario: Clamping transient surges on 12 V automotive bus lines during load dump or ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Dual-Zener clamp absorbing positive transients while maintaining system reset logic integrity. Use Value: Common-anode structure allows simultaneous clamping of two nodes to same rail; 300 mW rating handles short-duration spikes. |
| Industrial Sensor Signal Conditioning | Redundant Reference Source |
|
Use Scenario: Biasing and limiting analog front-end inputs in 4–20 mA transmitter circuits operating at 24 V supply. IC Role / Device Role / Timing Role: Dual Zener provides rail-to-rail input protection and stable mid-scale reference for ADC driver stage. Use Value: Matched VZ ensures symmetric clipping of differential signals; SOT23 footprint saves board space in compact modules. |
Use Scenario: Providing backup voltage reference in medical infusion pump controllers where single-point failure must be avoided. IC Role / Device Role / Timing Role: Two independent 15 V references derived from one device - monitored by watchdog circuit for cross-validation. Use Value: ≤5% matching enables fault detection via voltage delta monitoring; common-anode layout simplifies PCB routing and reduces trace inductance. |
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-C15LT1G | Single Zener (not dual), SOT23, 14.3–15.7 V range, ZZT = 30 Ω, no inter-device matching spec | Lacks dual-diode functionality - requires two devices for equivalent circuit, increasing BOM count and layout area | Select when only one reference is needed or when board space permits discrete placement of two units |
| DZ23C15-7-F | Dual Zener in common-cathode configuration (vs. AZ23's common-anode); identical VZ range and power rating | Requires inverted PCB layout - cathodes joined instead of anodes; may simplify grounding in certain topologies | Choose for designs requiring common-cathode architecture or legacy compatibility with DZ23-series footprints |
Compared with BZX84-C15LT1G and DZ23C15-7-F, AZ23C15-7-F uniquely delivers matched dual-anode Zeners in one SOT23 - reducing component count and improving thermal coupling for tightly correlated voltage references.
Availability
AZ23C15-7-F is available at Aetrix Electronics and suitable for switching power supply feedback, overvoltage protection circuits, and industrial sensor signal conditioning requiring stable component supply and JEDEC-qualified reliability.
Supply support for AZ23C15-7-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.
AZ23C15-7-F belongs to the AZ23 series of dual Zener diodes designed specifically for space-constrained, high-precision voltage reference and clamping applications in automated SMT assembly environments.
FAQ
What is the maximum continuous Zener current for AZ23C15-7-F at 25°C ambient?
At TA = 25°C, the maximum continuous Zener current is calculated from PD = 300 mW and VZ ≈ 15 V, yielding IZ(max) ≈ 20 mA. Derating applies above 50°C ambient per Fig. 1 - e.g., at 85°C, max power drops to ~180 mW, limiting current to ~12 mA.
Does AZ23C15-7-F have automotive-grade qualification?
AZ23C15-7-F itself is commercial-grade, but Diodes offers automotive-qualified equivalents with Q-suffix (e.g., AZ23C15Q-7-F) that meet AEC-Q101 requirements including HBM ESD ≥ 8 kV, PPAP capability, and IATF 16949 manufacturing certification.
How is polarity identified on the SOT23 package of AZ23C15-7-F?
Polarity is marked by a bar on the top surface near Pin 1. Per the datasheet top-view schematic, Pin 1 (Anode 1) and Pin 3 (Anode 2) are internally connected; Pin 2 is Cathode 1, Pin 4 is Cathode 2 - confirmed by mechanical outline and marking code DJ for 15 V variant.
Can AZ23C15-7-F replace single-Zener diodes like BZX84-C15 in existing designs?
It can replace two BZX84-C15 devices in common-anode configurations, but not one - due to its dual-diode structure and shared anode. Layout must accommodate four terminals (two anodes tied, two cathodes independent), and thermal design must account for combined 300 mW dissipation.
AZ23C15-7-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):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 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
AZ23C15-7-F FAQ
1.How can I place an order for AZ23C15-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ23C15-7-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 AZ23C15-7-F reliable?
The price and inventory of AZ23C15-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C15-7-F is usually 5 days.
3.What payment methods are accepted for AZ23C15-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C15-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ23C15-7-F?
AZ23C15-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ23C15-7-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 AZ23C15-7-F?
For technical support, including AZ23C15-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C15-7-F requirements.
6.How does Aetrix verify that AZ23C15-7-F is sourced from the original manufacturer or authorized distributors?
All AZ23C15-7-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 AZ23C15-7-F meets industry standards.
7.What is the process for return or replacement of AZ23C15-7-F?
All AZ23C15-7-F units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C15-7-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 AZ23C15-7-F part is unused and in its original packaging.
Return procedure for AZ23C15-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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