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Diodes Incorporated DZ23C4V3-7
- Part No.:
- DZ23C4V3-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DZ23C4V3-7.pdf
- Description:
- DIODE ZENER ARRAY 4.3V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,503
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Product details
Overview
DZ23C4V3-7 from Diodes Incorporated is a dual common-cathode 300mW surface-mount Zener diode with nominal zener voltage 4.3V (4.0–4.6V range), maximum zener impedance 95Ω at 5mA, temperature coefficient –0.035%/°C, and SOT23 package. It provides precision voltage reference and overvoltage clamping in compact power management circuits such as USB port protection and low-voltage LDO feedback networks.
For engineers reviewing the DZ23C4V3-7 datasheet, DZ23C4V3-7 pinout, DZ23C4V3-7 application, or DZ23C4V3-7 equivalent, key selection criteria include matched dual-zener tracking (≤5% ΔVZ), JEDEC-qualified reliability, common-cathode topology for bidirectional regulation, and compatibility with automated SMT assembly on FR4 PCBs.
Technical Context
This dual Zener operates in reverse breakdown mode with two anodes sharing one cathode terminal, enabling symmetrical clamping or dual-reference generation from a single package. Its thermal resistance (RθJA = 417°C/W) and 300mW power rating are defined under standard FR4 pad layout per Diodes' recommended footprint.
The device exhibits a negative temperature coefficient (–0.035%/°C) at 4.3V, ensuring stable regulation across –65°C to +150°C operating range. Reverse leakage remains ≤0.1µA below 4.0V, supporting low-power standby circuit integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 4.0–4.6 V at IZT = 5 mA - defines usable regulation window for 3.3V/5V rail monitoring |
| Max Zener Impedance | 95 Ω at IZT = 5 mA - limits output voltage deviation under load transients |
| Temp Coefficient | –0.035 %/°C - ensures <±2% drift over –40°C to +85°C ambient |
| Power Dissipation | 300 mW - supports continuous operation at ≤5 mA without derating below 70°C |
| Thermal Resistance | 417 °C/W - requires minimum copper area per Diodes' SOT23 pad layout for safe thermal margin |
| Operating Temp | –65°C to +150°C - qualified for industrial and extended-temperature automotive modules |
Pinout & Package
Package: SOT23 - 3-terminal plastic surface-mount package with matte tin-plated alloy 42 lead frame, UL 94V-0 rated molding compound, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (Pin 1) | First Zener anode | Enables independent reverse-bias connection to first regulated node |
| Cathode (Pin 2) | Shared cathode | Common return path for both Zeners; must be connected to system ground or reference potential |
| Anode 2 (Pin 3) | Second Zener anode | Allows second reverse-bias path for dual-rail clamping or differential reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode configuration | Reduces board space by 50% vs. discrete dual-Zener solutions while maintaining matched VZ tracking (≤5% ΔVZ) |
| JEDEC-qualified reliability | Meets high-reliability standards per AEC-Q stress test references, suitable for non-automotive industrial control systems |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
| Automated insertion compatible | SOT23 footprint and terminal geometry support high-yield pick-and-place and reflow soldering per IPC-J-STD-020 |
Applications
| USB Port ESD Protection | LDO Feedback Reference |
|---|---|
|
Use Scenario: Clamps transient surges on USB D+ and D− lines during hot-plug events. IC Role / Device Role / Timing Role: Dual-Zener acts as bidirectional shunt clamp with shared cathode tied to VBUS. Use Value: Leverages matched 4.3V breakdown to protect 3.3V PHY without external biasing; ≤5% ΔVZ ensures balanced clamping symmetry. |
Use Scenario: Sets precise output voltage in adjustable low-dropout regulators. IC Role / Device Role / Timing Role: One Zener anode connects to LDO feedback divider; cathode ties to output node. Use Value: –0.035%/°C TC minimizes output drift over temperature; 95Ω ZZT maintains regulation accuracy under load variation. |
| Industrial Sensor Signal Conditioning | Microcontroller I/O Level Translation |
|
Use Scenario: Limits analog sensor output swing to prevent ADC input saturation. IC Role / Device Role / Timing Role: Anode 1 clamps positive excursions; Anode 2 clamps negative excursions relative to common cathode ground. Use Value: Dual-anode topology enables rail-to-rail clamping without series resistors, preserving signal bandwidth. |
Use Scenario: Interfaces 5V logic outputs to 3.3V microcontroller inputs. IC Role / Device Role / Timing Role: Cathode tied to 3.3V rail; Anode 1 pulls down 5V signal to ~3.3V via Zener conduction. Use Value: 4.3V nominal VZ ensures reliable clamping above 3.3V logic high threshold while avoiding false triggering. |
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-C4V3 (Nexperia) | Single Zener, DO-35 through-hole, 400mW, ±5% tolerance, no dual configuration | Requires two devices and extra board area; lacks matched ΔVZ tracking | Select only when through-hole assembly or higher power dissipation is mandatory |
| DZ23C4V3-7-F (Diodes Inc.) | Same electrical specs but with "-F" suffix indicating full RoHS compliance and green compound | No functional difference; identical pinout and thermal behavior | Prefer for new designs requiring documented halogen-free status per IEC 61249-2-21 |
Compared with BZX79-C4V3 and DZ23C4V3-7-F, the DZ23C4V3-7 offers unique dual-common-cathode integration in SOT23, enabling space-constrained bidirectional clamping unattainable with single-Zener alternatives, while the -7-F variant adds traceable green material certification without performance trade-offs.
Availability
DZ23C4V3-7 is available at Aetrix Electronics and suitable for USB interface protection, LDO feedback networks, industrial sensor conditioning, and microcontroller I/O translation requiring stable component supply and JEDEC-qualified reliability.
Supply support for DZ23C4V3-7 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 consumer markets.
The DZ23 series targets compact, dual-function voltage regulation in space-constrained SMT applications-designed specifically to replace discrete dual-Zener layouts while maintaining matched parametric performance.
FAQ
What is the maximum reverse current before breakdown for DZ23C4V3-7?
At 4.0V (minimum specified VZ), reverse leakage is guaranteed ≤0.1µA per the datasheet's "Minimum Reverse Voltage" column. This ensures minimal quiescent current draw in standby circuits and preserves signal integrity in high-impedance feedback paths.
Can DZ23C4V3-7 be used for bidirectional TVS protection?
No-it is not rated as a transient voltage suppressor. While its dual-anode structure allows basic clamping, it lacks the peak pulse power rating, clamping voltage consistency, and waveform response time required for IEC 61000-4-2 ESD or IEC 61000-4-4 EFT protection. Dedicated TVS arrays like PTVS3.3S1UR are recommended instead.
Is thermal derating required above 70°C ambient?
Yes. Per Figure 1 (Power Derating Curve), power dissipation must be linearly reduced from 300mW at 25°C to zero at 150°C. At 100°C ambient, maximum allowable power drops to ~180mW-requiring current limit adjustment or increased copper area per Diodes' SOT23 pad layout guidelines.
Does DZ23C4V3-7 support automotive qualification?
The base part (DZ23C4V3-7) is commercial-grade. Automotive-qualified equivalents exist as DZ23C4V3Q-7-F, which undergoes AEC-Q101 testing, PPAP documentation, and is manufactured in IATF 16949-certified facilities-available separately upon request for automotive design-in.
DZ23C4V3-7 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:
- Discontinued at Digi-Key
- Configuration:
- 1 Pair Common Cathode
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 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
DZ23C4V3-7 FAQ
1.How can I place an order for DZ23C4V3-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DZ23C4V3-7 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 DZ23C4V3-7 reliable?
The price and inventory of DZ23C4V3-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZ23C4V3-7 is usually 5 days.
3.What payment methods are accepted for DZ23C4V3-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZ23C4V3-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DZ23C4V3-7?
DZ23C4V3-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DZ23C4V3-7 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 DZ23C4V3-7?
For technical support, including DZ23C4V3-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZ23C4V3-7 requirements.
6.How does Aetrix verify that DZ23C4V3-7 is sourced from the original manufacturer or authorized distributors?
All DZ23C4V3-7 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 DZ23C4V3-7 meets industry standards.
7.What is the process for return or replacement of DZ23C4V3-7?
All DZ23C4V3-7 units undergo pre-shipment inspection (PSI). If there is an issue with DZ23C4V3-7, 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 DZ23C4V3-7 part is unused and in its original packaging.
Return procedure for DZ23C4V3-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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