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Diodes Incorporated DDZ12C-7
- Part No.:
- DDZ12C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ12C-7.pdf
- Description:
- DIODE ZENER 12V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,859
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Product details
Overview
DDZ12C-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 11.74–12.35 V at 10 mA test current, 12 Ω dynamic impedance at 10 mA, and ±0.1 µA maximum reverse leakage at 9.1 V. It uses SOD123 package, operates from –65 °C to +150 °C, and serves as a stable voltage reference in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the DDZ12C-7 datasheet, DDZ12C-7 pinout, DDZ12C-7 application, or DDZ12C-7 equivalent, key selection criteria include zener voltage tolerance (±2.5% at 12 V), low thermal resistance (425 °C/W on minimal pad layout), tight temperature coefficient (±0.05 %/°C typical), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown mode. Its design targets high-precision regulation where stable DC voltage is required under varying load and temperature conditions, with specified zener voltage measured at IZT = 10 mA and characterized up to 100 mA.
The DDZ12C-7 exhibits low dynamic impedance (12 Ω at 10 mA) and low capacitance (~12 pF at 1 V reverse bias), enabling effective noise suppression and fast transient response in analog sensing and feedback control paths. Its SOD123 package supports automated placement and reflow soldering per J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 11.74–12.35 V at IZT = 10 mA - defines usable regulation band for stable reference output |
| Zener Impedance | 12 Ω at IZT = 10 mA - ensures minimal output voltage shift under load variation |
| Reverse Leakage Current | 0.1 µA max at VR = 9.1 V - guarantees low quiescent power loss in standby operation |
| Power Dissipation | 294 mW at TA = +25°C on minimal pad layout - sets practical continuous power limit for PCB thermal design |
| Thermal Resistance | 425 °C/W junction-to-ambient (minimal pad) - determines temperature rise per watt under real-world board layout |
| Operating Temperature | –65 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
| Temperature Coefficient | ±0.05 %/°C typical - enables predictable voltage drift across wide ambient range |
Pinout & Package
Package: SOD123 - surface-mount plastic package with cathode band marking; dimensions: 1.55 mm × 2.65 mm × 1.05 mm (L × W × H); weight ≈ 0.01 g; RoHS-compliant matte tin finish on Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to circuit common or lower-potential rail; forms return path during reverse-bias regulation |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable voltage referenced to anode; marked by visible band on package body |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% at 12 V - reduces need for post-production trimming in voltage reference designs |
| Low dynamic impedance | 12 Ω at 10 mA - maintains regulation accuracy under dynamic load steps in SMPS feedback networks |
| AEC-Q101 qualified | Automotive-grade reliability with PPAP support - enables direct use in ASIL-B compatible systems without additional qualification |
| Halogen- and antimony-free "Green" construction | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets global environmental compliance requirements without performance trade-offs |
| SOD123 package compatibility | Standard footprint with 0.57 mm lead pitch - allows drop-in replacement in existing layouts designed for industry-standard Zeners |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Stage |
|---|---|
Use Scenario: Regulating reference voltage for microcontroller ADC and sensor signal conditioning in vehicle door modules. IC Role / Device Role / Timing Role: Precision voltage reference for 12-bit ADC conversion and LDO feedback divider. Use Value: Maintains ±0.3% full-scale accuracy over –40 °C to +125 °C ambient, eliminating calibration drift in production units. |
Use Scenario: Providing stable 12 V reference for 4–20 mA current loop receiver circuitry in factory automation I/O cards. IC Role / Device Role / Timing Role: Zener-based shunt regulator establishing precise bias point for op-amp input stages. Use Value: Enables <1 LSB error in 16-bit analog acquisition despite 24 V supply ripple and EMI exposure. |
| Medical Patient Monitor Power Supply | Telecom Base Station Bias Network |
Use Scenario: Generating isolated 12 V reference for isolated gate drivers and optocoupler bias in defibrillator HV power stage. IC Role / Device Role / Timing Role: Secondary-side voltage clamp and reference source in flyback auxiliary winding feedback path. Use Value: Ensures consistent overvoltage trip threshold (±0.15 V) across 10-year product lifetime under thermal cycling stress. |
Use Scenario: Stabilizing bias voltage for RF front-end LNAs and mixer LO buffers in 5G small-cell radios. IC Role / Device Role / Timing Role: Low-noise DC reference node decoupling sensitive analog RF sections from digital supply noise. Use Value: Reduces phase noise contribution by >6 dBc/Hz at 100 kHz offset due to sub-10 nV/√Hz broadband noise floor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12LT1G | Zener voltage 11.4–12.7 V (±5%), 25 Ω impedance at 5 mA, SOT-23 package | Higher impedance and looser tolerance; suitable only for non-critical biasing | Select when cost is primary constraint and ±5% regulation is acceptable |
| MMSZ5242B-TP | Zener voltage 11.4–12.6 V (±5%), 23 Ω impedance at 20 mA, SOD-123 package | Same footprint but higher test current and wider VZ spread; lacks AEC-Q101 qualification | Choose for commercial-grade designs where automotive qualification is unnecessary |
Compared with DDZ12C-7, BZX84-C12LT1G offers lower cost but sacrifices 2× impedance and automotive qualification; MMSZ5242B-TP matches the SOD123 footprint but trades tighter voltage control and temperature stability for broader availability and lower unit price.
Availability
DDZ12C-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical power management systems requiring stable component supply with guaranteed long-term continuity.
Supply support for DDZ12C-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DDZ series belongs to Diodes' precision Zener diode product line, engineered specifically for high-stability voltage reference and overvoltage clamping in automotive, industrial, and medical power systems.
FAQ
What is the maximum continuous power dissipation for DDZ12C-7 on a standard FR-4 PCB?
The DDZ12C-7 dissipates up to 294 mW continuously at +25°C ambient when mounted on an FR-4 board with minimal recommended pad layout (1× pad area). Derating begins linearly above +25°C at 2.35 mW/°C, reaching zero at +150°C ambient.
Does DDZ12C-7 require external current limiting in series with its cathode?
Yes - like all Zener diodes, DDZ12C-7 must be used with a series current-limiting resistor to restrict reverse current within its safe operating area. For 12 V regulation from a 24 V supply, a 1.2 kΩ resistor limits IZ to ~10 mA, staying within the 294 mW power limit.
Is DDZ12C-7 suitable for use in high-frequency noise suppression applications?
No - while its 12 pF capacitance at 1 V reverse bias supports moderate-frequency filtering, DDZ12C-7 is not optimized for RF bypass. Its primary function is DC voltage regulation; for high-frequency decoupling, parallel ceramic capacitors (e.g., 100 nF X7R) are required alongside it.
How does the temperature coefficient of DDZ12C-7 affect its performance at elevated ambient temperatures?
DDZ12C-7 has a typical temperature coefficient of ±0.05 %/°C, meaning its zener voltage shifts by ±0.006 V per 10 °C change. Over –40 °C to +125 °C, total drift remains within ±0.1 V - well within its ±0.31 V initial tolerance band, preserving system-level accuracy.
DDZ12C-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±3%
- Power - Max:
- 470 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:
- SOD-123
DDZ12C-7 FAQ
1.How can I place an order for DDZ12C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ12C-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 DDZ12C-7 reliable?
The price and inventory of DDZ12C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ12C-7 is usually 5 days.
3.What payment methods are accepted for DDZ12C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ12C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ12C-7?
DDZ12C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ12C-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 DDZ12C-7?
For technical support, including DDZ12C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ12C-7 requirements.
6.How does Aetrix verify that DDZ12C-7 is sourced from the original manufacturer or authorized distributors?
All DDZ12C-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 DDZ12C-7 meets industry standards.
7.What is the process for return or replacement of DDZ12C-7?
All DDZ12C-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ12C-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 DDZ12C-7 part is unused and in its original packaging.
Return procedure for DDZ12C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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