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Diodes Incorporated DDZX12C-13
- Part No.:
- DDZX12C-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX12C-13.pdf
- Description:
- DIODE ZENER 12V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,698
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Product details
Overview
DDZX12C-13 from Diodes Incorporated is a surface-mount precision Zener diode in SOT23 package, rated for 12 V nominal zener voltage (11.74–12.35 V), 10 mA test current, 12 Ω maximum zener impedance at 1 kHz, and 300 mW power dissipation on FR-4 PCB. It delivers tight voltage tolerance and low leakage (0.1 μA @ 9.1 V) for voltage reference and regulation in automotive-grade power management circuits.
For engineers reviewing the DDZX12C-13 datasheet, DDZX12C-13 pinout, DDZX12C-13 application, or DDZX12C-13 equivalent, this part is selected for stable low-power voltage clamping, precision biasing, and overvoltage protection where AEC-Q101 reliability, sharp breakdown characteristics, and SOT23 automated assembly compatibility are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with tightly controlled VZ tolerance (±2.6% at 12 V), low dynamic impedance (12 Ω @ IZT = 10 mA), and minimal temperature coefficient (≈+0.07%/°C near 12 V). Its design targets stable DC reference generation under varying load and temperature conditions.
It features ultra-low reverse leakage (0.1 μA @ VR = 9.1 V), 300 mW power rating on standard FR-4 layout, and thermal resistance of 417 °C/W (junction-to-ambient). The device is qualified to AEC-Q101 and built with halogen/antimony-free "Green" molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.74–12.35 V @ IZT = 10 mA - defines precise clamping threshold for 12 V rail regulation |
| Zener Impedance (ZZT) | 12 Ω max @ f = 1 kHz - ensures minimal output voltage variation under dynamic load changes |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - supports continuous operation in space-constrained industrial and automotive PCBs |
| Reverse Leakage (IR) | 0.1 μA @ VR = 9.1 V - enables low-error bias networks and high-impedance sensing interfaces |
| Thermal Resistance (RθJA) | 417 °C/W - determines junction temperature rise under ambient conditions with standard pad layout |
| Operating Temperature | −65 to +150 °C - meets extended-range requirements for under-hood automotive and industrial environments |
Pinout & Package
Package: SOT23 - compact 3-pin surface-mount plastic case, 2.4 mm × 1.3 mm footprint, 1.0 mm height, matte tin-plated terminals, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground path | Connected to system ground or lower-potential node during Zener operation; enables standard reverse-bias mounting |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 12 V reference when reverse-biased; connects to supply rail or feedback network |
| No Connection (Pin 3) | Internal die attach flag / mechanical support | Not electrically connected; serves as thermal mass and mechanical anchor-must not be routed or biased |
Key Features
| Feature | Design Value |
|---|---|
| Sharp Breakdown Knee | Enables clean, repeatable voltage clamping without soft turn-on drift-critical for precision analog references |
| AEC-Q101 Qualification | Validated for automotive applications including engine control units and body electronics requiring high-reliability stress screening |
| Lead-Free & Halogen-Free | Fully RoHS-compliant with <900 ppm Br+Cl and <1000 ppm Sb-meets global environmental compliance mandates |
| Low Thermal Resistance | 417 °C/W allows sustained 300 mW operation on standard FR-4 without heatsinking or derating below +85 °C ambient |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 12 V reference for ADC biasing and microcontroller reset circuitry in under-hood ECUs. IC Role / Device Role / Timing Role: Precision voltage reference and overvoltage clamp protecting downstream analog front-end components. Use Value: Maintains ±0.3 V regulation accuracy across −40 to +125 °C, ensuring consistent ADC full-scale and reliable brown-out detection. |
Use Scenario: Biasing bridge sensors and op-amp input stages in factory-floor pressure and temperature transmitters. IC Role / Device Role / Timing Role: Low-drift DC reference source enabling sub-0.1% measurement linearity over wide temperature ranges. Use Value: 0.1 μA leakage and 12 Ω impedance minimize offset error and noise coupling into high-impedance sensor nodes. |
| Telecom Power Supervision | Medical Diagnostic Equipment Power Monitoring |
Use Scenario: Monitoring 12 V intermediate bus voltage in optical line terminal (OLT) power supplies. IC Role / Device Role / Timing Role: Overvoltage protection element triggering shutdown logic when rail exceeds safe threshold. Use Value: Sharp 12 V breakdown and fast response (<40 ms test pulse) enable rapid fault detection before downstream IC damage occurs. |
Use Scenario: Regulating auxiliary 12 V supply for analog signal chain in portable ultrasound imaging modules. IC Role / Device Role / Timing Role: Low-noise voltage reference for DAC output buffers and clock generator bias networks. Use Value: Halogen-free "Green" construction and AEC-Q101 qualification support medical regulatory submissions requiring material traceability and reliability evidence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12LT1G | 12 V nominal, ±5% tolerance, 15 Ω ZZT, 350 mW PD, SOT23 package | Higher VZ tolerance and impedance reduce reference accuracy in high-precision analog circuits | Preferred for cost-sensitive non-automotive applications where ±5% regulation is acceptable |
| MMSZ4687T1G | 12 V nominal, ±5% tolerance, 30 Ω ZZT, 500 mW PD, SOT23 package | Higher impedance and wider tolerance degrade stability in low-current bias networks | Suitable for general-purpose clamping where power handling >300 mW is required |
Compared with BZX84-C12LT1G and MMSZ4687T1G, DDZX12C-13 offers tighter VZ tolerance (±2.6% vs. ±5%), lower ZZT (12 Ω vs. ≥15 Ω), and AEC-Q101 qualification-making it uniquely suited for automotive and high-accuracy industrial references where long-term drift and thermal stability are critical.
Availability
DDZX12C-13 is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor transmitters, and telecom power supervision systems requiring stable component supply, AEC-Q101 compliance, and SOT23 automated assembly compatibility.
Supply support for DDZX12C-13 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, energy-efficient components for automotive, industrial, and consumer markets.
DDZX12C-13 belongs to the DDZX series of precision Zener diodes, designed specifically for stable voltage reference and regulation in harsh-environment applications demanding AEC-Q101 qualification and tight parametric control.
FAQ
What is the maximum reverse voltage (VR) at which DDZX12C-13 guarantees ≤0.1 μA leakage?
DDZX12C-13 guarantees reverse leakage current ≤0.1 μA at VR = 9.1 V, as specified in the Electrical Characteristics table. This value is measured under pulsed conditions to minimize self-heating effects and reflects the device's performance in low-power bias applications where leakage-induced error must be minimized.
Can DDZX12C-13 be used in place of a 12 V Zener with ±5% tolerance?
Yes, but only where tighter regulation is beneficial. DDZX12C-13 offers ±2.6% VZ tolerance (11.74–12.35 V) versus typical ±5% parts (11.4–12.6 V), delivering improved accuracy in voltage references and feedback loops. Its lower ZZT (12 Ω) also enhances load regulation compared to higher-impedance alternatives.
Is DDZX12C-13 suitable for use in high-humidity environments?
Yes. DDZX12C-13 is qualified to J-STD-020 moisture sensitivity level 1, meaning it can be stored indefinitely at ≤30 °C/60% RH without baking prior to reflow. Its molded plastic case with UL 94V-0 rating and matte tin annealed terminals provide robust protection against humidity-induced corrosion and delamination.
Does DDZX12C-13 require external heat sinking in standard FR-4 layouts?
No. With a thermal resistance of 417 °C/W and 300 mW power rating on FR-4 PCB using Diodes Incorporated's recommended pad layout, DDZX12C-13 remains within safe junction temperature limits (≤150 °C) up to +85 °C ambient without additional heatsinking. Derating begins above that ambient per the published power derating curve.
DDZX12C-13 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:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 12 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDZX12C-13 FAQ
1.How can I place an order for DDZX12C-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX12C-13 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 DDZX12C-13 reliable?
The price and inventory of DDZX12C-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX12C-13 is usually 5 days.
3.What payment methods are accepted for DDZX12C-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX12C-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX12C-13?
DDZX12C-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX12C-13 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 DDZX12C-13?
For technical support, including DDZX12C-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX12C-13 requirements.
6.How does Aetrix verify that DDZX12C-13 is sourced from the original manufacturer or authorized distributors?
All DDZX12C-13 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 DDZX12C-13 meets industry standards.
7.What is the process for return or replacement of DDZX12C-13?
All DDZX12C-13 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX12C-13, 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 DDZX12C-13 part is unused and in its original packaging.
Return procedure for DDZX12C-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX12C-13 Tags
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Diodes Incorporated
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Diodes Incorporated
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