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Diodes Incorporated DZ23C43-7-F
- Part No.:
- DZ23C43-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DZ23C43-7-F.pdf
- Description:
- DIODE ZENER ARRAY 43V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
DZ23C43-7-F from Diodes Incorporated is a dual common-cathode 43V Zener diode pair in SOT23 package, rated for 300mW total power dissipation, with ±5% matching between zener voltages and 100Ω typical zener impedance at 5mA. It provides precision voltage reference and overvoltage clamping in space-constrained dual-rail protection circuits.
For engineers reviewing the DZ23C43-7-F datasheet, DZ23C43-7-F pinout, DZ23C43-7-F application, or DZ23C43-7-F equivalent, this device supports matched dual-voltage regulation, low-temperature-coefficient clamping (±0.11%/°C), and JEDEC-qualified reliability in commercial-grade SOT23 assembly.
Technical Context
This dual Zener operates in common-cathode configuration: pins 1 and 3 are anodes, pin 2 is shared cathode. Each diode exhibits nominal 43V breakdown (40–46V range) with 32V minimum reverse voltage and 700Ω maximum knee impedance at 1mA.
Thermal resistance is 417°C/W junction-to-ambient on FR4 PCB; derating begins above 40°C ambient. The device meets JEDEC high-reliability standards and is fully RoHS-compliant with halogen- and antimony-free "Green" molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 40–46 V range per diode; enables robust 43V rail clamping with margin against tolerance drift |
| Power Dissipation | 300 mW total; supports dual-diode operation without external heatsinking in compact layouts |
| Zener Impedance | 100 Ω typical at 5mA; ensures stable regulation under moderate load transients |
| Temperature Coefficient | +0.11 %/°C; low-drift behavior critical for temperature-stable reference applications |
| Matching Tolerance | ≤5% ΔVZ between diodes; allows precise dual-rail symmetry in differential sensing or bias networks |
| Package | SOT23; surface-mount footprint compatible with automated pick-and-place and reflow processes |
Pinout & Package
Package: SOT23 - 3-pin plastic surface-mount case with matte tin-plated alloy 42 lead frame, UL 94V-0 flammability rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Diode 1 | Independent input node for first Zener; enables discrete clamping path |
| Pin 2 | Common Cathode | Shared output node; simplifies PCB routing for dual-rail reference or bidirectional clamp |
| Pin 3 | Anode of Diode 2 | Independent input node for second Zener; supports matched dual-channel design |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode topology | Reduces component count and layout area vs. two discrete SOT23 Zeners |
| ≤5% inter-diode VZ matching | Enables accurate differential voltage references and balanced clamping in analog front-ends |
| 300mW total power rating | Supports simultaneous operation of both diodes at up to 150mW each under thermal derating |
| JEDEC-qualified reliability | Validated for high-reliability commercial applications without automotive qualification overhead |
| Halogen- and antimony-free "Green" compound | Meets global environmental compliance (RoHS 3, IEC 61249-2-21) without performance trade-offs |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Protecting 24-bit ADC inputs from ESD-induced overvoltage in factory automation sensors. IC Role / Device Role / Timing Role: Dual-rail clamping element limiting differential input swing to ±43V while preserving common-mode integrity. Use Value: Matched VZ ensures symmetrical clipping, minimizing DC offset error and harmonic distortion in precision measurement paths. |
Use Scenario: Safeguarding CC1/CC2 communication lines against transient surges during hot-plug events in USB-C PD controllers. IC Role / Device Role / Timing Role: Bidirectional voltage clamp referenced to ground, absorbing ±20kV HBM ESD pulses without latch-up. Use Value: Common-cathode architecture allows single-point grounding and eliminates need for two separate Zener footprints near high-speed data lanes. |
| Programmable Logic Controller I/O Protection | DC-DC Converter Feedback Divider Stabilization |
Use Scenario: Shielding 24V digital input modules from field-wiring induced transients in PLC backplanes. IC Role / Device Role / Timing Role: Front-end overvoltage suppressor placed before optocoupler input, limiting voltage to safe isolation barrier levels. Use Value: 300mW rating sustains repeated 100ns/1A surge events without degradation; SOT23 fits dense I/O header layouts. |
Use Scenario: Stabilizing feedback node voltage in isolated flyback converters using TL431-based regulation. IC Role / Device Role / Timing Role: Precision shunt reference supplementing TL431, improving loop stability under light-load conditions. Use Value: +0.11%/°C TC and matched dual Zeners enable tighter output voltage tolerance across –40°C to +85°C operating range. |
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-C43,113 | Single 43V Zener in DO-35 glass package; no dual configuration or VZ matching spec | Requires two devices and board area for dual-rail use; lacks common-cathode convenience | Select when legacy through-hole assembly or higher pulse power (500mW) is required |
| DZ23C47-7-F | 47V nominal (44–50V range); +0.11%/°C TC; otherwise identical SOT23 dual-common-cathode construction | Higher clamping threshold; suitable where 43V is marginal for system overvoltage margin | Choose for designs needing 47V standoff with same footprint, thermal, and layout compatibility |
Compared with BZX79-C43,113 and DZ23C47-7-F, DZ23C43-7-F uniquely delivers matched 43V dual-zener performance in a single SOT23 footprint-enabling compact, thermally efficient, and symmetric voltage limiting unattainable with discrete or non-matched alternatives.
Availability
DZ23C43-7-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C power delivery protection, and PLC I/O modules requiring stable component supply with JEDEC-qualified reliability and RoHS compliance.
Supply support for DZ23C43-7-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and quality systems aligned with JEDEC and AEC standards.
The DZ23 series targets high-density, cost-sensitive voltage reference and protection applications-designed specifically for dual-rail clamping, matched bias generation, and space-constrained commercial electronics where SOT23 integration adds value over discrete alternatives.
FAQ
What is the maximum continuous power dissipation for DZ23C43-7-F?
The device is rated for 300mW total power dissipation across both Zener diodes. Derating begins linearly above 40°C ambient temperature, reaching zero power at 150°C junction temperature. This rating assumes mounting on FR4 PCB with Diodes' recommended pad layout (2.0mm × 0.8mm solder pads).
How is the common-cathode configuration used in circuit design?
Pin 2 serves as the shared cathode node, typically tied to system ground or a stable reference potential. Pins 1 and 3 connect independently to protected nodes-enabling simultaneous clamping of two signals (e.g., differential pairs or complementary rails) to the same reference level without cross-coupling.
Does DZ23C43-7-F meet automotive qualification requirements?
No-DZ23C43-7-F is a commercial-grade part qualified to JEDEC high-reliability standards but not AEC-Q101. For automotive applications, Diodes offers the Q-suffix variant DZ23C43Q-7-F, which undergoes PPAP, is manufactured in IATF 16949 facilities, and meets AEC-Q101 stress testing requirements.
What is the significance of the "≤5% ΔVZ" specification?
This indicates the maximum absolute difference in nominal Zener voltage between the two integrated diodes under identical test conditions (IZT = 5mA, TA = 25°C). It enables predictable, symmetrical clamping behavior in differential circuits-critical for minimizing common-mode error in precision analog signal chains.
DZ23C43-7-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 Cathode
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±6.98%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 35 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DZ23C43-7-F FAQ
1.How can I place an order for DZ23C43-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for DZ23C43-7-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 DZ23C43-7-F reliable?
The price and inventory of DZ23C43-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZ23C43-7-F is usually 5 days.
3.What payment methods are accepted for DZ23C43-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZ23C43-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DZ23C43-7-F?
DZ23C43-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DZ23C43-7-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 DZ23C43-7-F?
For technical support, including DZ23C43-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZ23C43-7-F requirements.
6.How does Aetrix verify that DZ23C43-7-F is sourced from the original manufacturer or authorized distributors?
All DZ23C43-7-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 DZ23C43-7-F meets industry standards.
7.What is the process for return or replacement of DZ23C43-7-F?
All DZ23C43-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DZ23C43-7-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 DZ23C43-7-F part is unused and in its original packaging.
Return procedure for DZ23C43-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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