My Inquiry
My Account
Diodes Incorporated AZ23C43-7-F
- Part No.:
- AZ23C43-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ23C43-7-F.pdf
- Description:
- DIODE ZENER ARRAY 43V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AZ23C43-7-F from Diodes Incorporated is a dual Zener diode in common-anode configuration, rated for 300 mW total power dissipation, with a nominal Zener voltage of 43 V (40–46 V range at 5 mA), ±5% matching between the two Zeners, and temperature coefficient of +0.110 %/°C. It serves as a precision dual-voltage reference or overvoltage clamp in DC power rail monitoring circuits.
For engineers reviewing the AZ23C43-7-F datasheet, AZ23C43-7-F pinout, AZ23C43-7-F application, or AZ23C43-7-F equivalent, key selection criteria include matched Zener voltage tolerance, thermal resistance (417 °C/W), SOT23 package compatibility, and JEDEC-qualified reliability for industrial power management designs.
Technical Context
This dual Zener operates in reverse breakdown mode with two independent anodes tied to a shared cathode terminal. Each Zener exhibits low dynamic impedance (100 Ω at 5 mA) and stable regulation across –65 °C to +150 °C ambient temperatures.
The device uses a common-anode topology to enable bidirectional clamping or dual-rail referencing from a single SOT23 footprint. Its ±5% inter-Zener voltage matching supports differential sensing and balanced voltage reference applications without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 40–46 V at 5 mA - defines clamping threshold for 43 V nominal rail protection |
| Power Dissipation | 300 mW - sets maximum continuous DC power handling on FR-4 PCB with standard pad layout |
| Zener Impedance | 100 Ω at 5 mA - determines regulation stiffness under load transients |
| Temp. Coefficient | +0.110 %/°C - indicates positive drift; requires thermal compensation in precision references |
| Reverse Leakage | 0.1 µA at 32 V - ensures minimal quiescent current in high-impedance bias networks |
| Thermal Resistance | 417 °C/W - defines junction-to-ambient rise per watt; constrains derating above 70 °C ambient |
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 |
|---|---|---|
| Anode 1 (Pin 1) | First Zener anode | Connects to first regulated node; reverse-biased to cathode for Zener action |
| Cathode (Pin 2) | Common cathode | Shared cathode node for both Zeners; ties to higher-potential rail or ground reference |
| Anode 2 (Pin 3) | Second Zener anode | Connects to second regulated node; enables dual-rail or differential clamping |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener, common-anode | Enables compact dual-voltage referencing or bidirectional transient suppression in one SOT23 footprint |
| ≤5% inter-Zener VZ match | Supports matched clamping thresholds without calibration in differential sensor interfaces |
| JEDEC-qualified reliability | Validated to AEC-Q101 HBM 8 kV / MM 400 V ESD and IEC 61000-4-2 (air 15 kV, contact 8 kV) |
| Lead-free & halogen-free | Fully RoHS 3 compliant with <900 ppm Br/Cl and <1000 ppm Sb; green molding compound |
Applications
| Industrial Power Supply Monitoring | Automotive Battery Voltage Clamp |
|---|---|
Use Scenario: Monitoring 48 V DC bus in programmable logic controller (PLC) backplane to detect overvoltage faults before damage occurs. IC Role / Device Role / Timing Role: Dual Zener provides redundant 43 V clamping path - one Zener guards main rail, the other backs up auxiliary bias supply. Use Value: Matched 40–46 V breakdown ensures consistent trip point across temperature; 300 mW rating sustains 100 ms surge events without degradation. | Use Scenario: Protecting CAN transceiver power input against load-dump transients in 12 V automotive subsystems upgraded to 48 V architecture. IC Role / Device Role / Timing Role: Acts as front-end clamp between alternator output and LDO input, shunting excess energy during ISO 7637-2 Pulse 5a events. Use Value: Common-anode topology allows single-device bidirectional clamping; +0.110 %/°C TC minimizes drift over engine bay temperature range. |
| Test Equipment Reference Source | Industrial Sensor Signal Conditioning |
Use Scenario: Generating stable dual reference voltages for 16-bit ADC calibration in portable multimeters. IC Role / Device Role / Timing Role: One Zener supplies 43 V reference to DAC buffer; second Zener biases op-amp input stage at matched potential. Use Value: ≤5% inter-Zener matching eliminates need for laser trimming; SOT23 footprint eases layout symmetry for low-drift analog design. | Use Scenario: Biasing bridge-based pressure sensors in HVAC control modules where supply rails vary between 36–52 V. IC Role / Device Role / Timing Role: Provides rail-referenced Zener clamp to limit amplifier input swing during sensor fault conditions. Use Value: 100 Ω dynamic impedance ensures fast recovery after overvoltage; 417 °C/W RθJA allows operation up to 105 °C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C43-7-F | Single Zener, same 43 V rating and SOT23 package, but no dual-element or inter-Zener matching | Lacks common-anode dual-clamp capability; suitable only for single-rail reference or clamp | Select when only one regulated voltage is needed and board space permits separate devices |
| DZ23C43-7-F | Same dual Zener, common-cathode configuration (pinout inverted: cathodes shared, anodes separate) | Requires reversed PCB layout; used where cathode-referenced clamping is preferred (e.g., ground-referenced rails) | Choose for ground-sensing topologies or when migrating from legacy DZ23-series designs |
Compared with BZX84-C43-7-F and DZ23C43-7-F, AZ23C43-7-F uniquely delivers matched dual Zeners in common-anode form - enabling compact bidirectional clamping and differential referencing unattainable with single or common-cathode alternatives.
Availability
AZ23C43-7-F is available at Aetrix Electronics and suitable for industrial power supply monitoring, automotive battery voltage clamp, test equipment reference source, and industrial sensor signal conditioning requiring stable component supply and JEDEC-qualified reliability.
Supply support for AZ23C43-7-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 ICs, specializing in high-reliability components for industrial, automotive, and computing markets.
AZ23C43-7-F belongs to the AZ23 series of dual Zener diodes designed specifically for space-constrained, high-stability voltage reference and overvoltage protection applications in harsh-environment systems.
FAQ
What is the maximum continuous Zener current for AZ23C43-7-F at 25°C?
The device is rated for 300 mW total power dissipation. At 43 V nominal Zener voltage, this corresponds to a maximum average Zener current of approximately 7 mA (300 mW ÷ 43 V). Derating applies above 70°C ambient per the power derating curve in Figure 1 of DS18003 Rev. 18-2.
Is AZ23C43-7-F qualified for automotive use?
No - AZ23C43-7-F is the commercial-grade part. For automotive applications, Diodes offers the Q-suffix variant AZ23C43Q-7-F, which is AEC-Q101 qualified, PPAP-capable, and manufactured in IATF 16949 certified facilities. The Q-suffix version shares identical electrical specs but adds automotive change control and traceability.
How does the common-anode configuration affect circuit implementation?
In common-anode configuration, both Zener anodes are electrically isolated while sharing one cathode terminal. This allows either Zener to clamp its respective anode node toward the cathode potential - ideal for clamping two independent signals to the same reference rail or implementing symmetrical overvoltage protection on complementary outputs.
What is the meaning of the "-7-F" suffix in AZ23C43-7-F?
The "-7-F" denotes tape-and-reel packaging: 3,000 units per reel, 8 mm tape width, with embossed carrier tape and cover tape. The "-7" indicates standard SOT23 tape-and-reel format; "F" signifies lead-free, RoHS-compliant finish per Diodes' internal plating specification.
AZ23C43-7-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):
- 43 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
AZ23C43-7-F FAQ
1.How can I place an order for AZ23C43-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ23C43-7-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 AZ23C43-7-F reliable?
The price and inventory of AZ23C43-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ23C43-7-F is usually 5 days.
3.What payment methods are accepted for AZ23C43-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ23C43-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ23C43-7-F?
AZ23C43-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ23C43-7-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 AZ23C43-7-F?
For technical support, including AZ23C43-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ23C43-7-F requirements.
6.How does Aetrix verify that AZ23C43-7-F is sourced from the original manufacturer or authorized distributors?
All AZ23C43-7-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 AZ23C43-7-F meets industry standards.
7.What is the process for return or replacement of AZ23C43-7-F?
All AZ23C43-7-F units undergo pre-shipment inspection (PSI). If there is an issue with AZ23C43-7-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 AZ23C43-7-F part is unused and in its original packaging.
Return procedure for AZ23C43-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AZ23C43-7-F Tags
-
MMBZ18VALT1G
onsemi
-
AZ23C18-7-F
Diodes Incorporated
-
MMBZ6V2ALT1G
onsemi
-
MMBZ5V6ALT1G
onsemi
-
MMBZ6V8ALT1G
onsemi
-
MMBZ5V6ALT3G
onsemi
-
MMBZ33VALT1G
onsemi
-
MMBZ9V1ALT1G
onsemi
-
MMBZ20VALT1G
onsemi
-
SZMMBZ27VALT1G
onsemi
-
MMBZ15VALT1G
onsemi
-
MMBZ12VALT1G
onsemi
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
