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Diodes Incorporated DDZ15-7
- Part No.:
- DDZ15-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ15-7.pdf
- Description:
- DIODE ZENER 15V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:16,572
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Product details
Overview
DDZ15-7 from Diodes Incorporated is a surface-mount precision Zener diode designed for voltage regulation and reference applications in power supply feedback loops, analog signal conditioning, and overvoltage protection circuits. It delivers a nominal Zener voltage of 14.80–15.57 V at 10 mA test current, with 18 Ω maximum Zener impedance at 1 kHz, 0.05 µA maximum reverse leakage at 12.0 V, and operates across –65 °C to +150 °C.
For engineers reviewing the DDZ15-7 datasheet, DDZ15-7 pinout, DDZ15-7 application, or DDZ15-7 equivalent, this device is selected for stable low-power voltage reference needs where tight VZ tolerance (±2.5%), low thermal drift, and SOD123 package compatibility with automated assembly are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified knee current (IZK) of 0.5 mA and maintains regulation across 10 mA nominal test current. Its temperature coefficient ranges from +0.04 %/°C to +0.08 %/°C (typical), enabling predictable drift behavior in ambient-temperature-varying environments.
The device uses an alloy-42 leadframe with matte tin annealed terminals, rated for 470 mW power dissipation at 25 °C on standard FR-4 PCB, and exhibits 425 °C/W junction-to-ambient thermal resistance under minimum pad layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.80–15.57 V at IZT = 10 mA - defines precise regulation point for feedback or clamping |
| Zener Impedance (ZZT) | 18 Ω max at f = 1 kHz - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.05 µA max at VR = 12.0 V - guarantees negligible current draw in standby/reference mode |
| Power Dissipation (PD) | 470 mW at TA = +25°C - supports continuous operation in compact, non-heatsinked layouts |
| Operating Temperature | –65 °C to +150 °C - enables use in automotive under-hood, industrial control, and outdoor electronics |
| Package | SOD123 - 2-pin surface-mount outline compatible with high-speed pick-and-place and reflow soldering |
| RoHS Compliance | Fully lead-free, halogen- and antimony-free "Green" device per EU directives - meets global environmental compliance requirements |
Pinout & Package
DDZ15-7 is housed in the SOD123 plastic surface-mount package with cathode identification via a molded band. The device has two terminals: anode and cathode, with polarity critical for correct Zener operation in reverse-biased configurations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-bias input terminal | Connected to higher potential side in regulation/clamp circuits; determines breakdown conduction direction |
| Anode | Reference/ground return terminal | Typically tied to system ground or feedback node; completes Zener current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% over full operating temperature range - reduces need for post-production calibration |
| Low dynamic impedance | 18 Ω max at 1 kHz - minimizes AC ripple coupling into reference nodes |
| Automated assembly compatibility | SOD123 footprint with J-STD-020 Level 1 moisture sensitivity - eliminates baking requirements pre-reflow |
| High-temperature reliability | Rated to +150 °C junction temperature - supports under-hood and motor-control applications |
| Environmental compliance | Halogen- and antimony-free, RoHS 3 compliant - satisfies automotive OEM and industrial regulatory mandates |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback or buck converter secondary-side regulation. IC Role / Device Role: Precision voltage reference for TL431-type shunt regulators or optocoupler bias networks. Use Value: Tight 14.8–15.57 V tolerance ensures ±1% output accuracy without trimming resistors. |
Use Scenario: Clamping transient surges on 12 V automotive sensor lines or industrial I/O ports. IC Role / Device Role: Standby-mode overvoltage clamp protecting downstream ADC inputs or microcontroller pins. Use Value: Sub-µA leakage at 12 V prevents loading of high-impedance signal paths during normal operation. |
| Analog Signal Conditioning | Temperature-Stable Reference Source |
Use Scenario: Providing fixed bias voltage for op-amp level-shifting or comparator hysteresis networks. IC Role / Device Role: Low-noise DC reference in battery-powered instrumentation front-ends. Use Value: 18 Ω ZZT limits voltage shift to <18 mV per 1 mA load change - preserves measurement linearity. |
Use Scenario: Generating stable reference for RTD or thermistor linearization circuits in HVAC controllers. IC Role / Device Role: Primary voltage reference in analog front-end ICs requiring <100 ppm/°C drift. Use Value: Predictable +0.04–+0.08 %/°C TC enables first-order compensation without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15 | ±5% VZ tolerance, 30 Ω ZZT, SOT-23 package | Higher tolerance and impedance reduce regulation accuracy; smaller footprint increases thermal stress | Select when cost is primary and ±5% output tolerance is acceptable |
| MMSZ5245B | ±5% VZ, 19 Ω ZZT, SOD-123 package, 500 mW PD | Same package but looser tolerance and slightly higher leakage (0.1 µA @ 12 V) | Prefer for legacy designs already using MMSZ series; verify thermal margin at 500 mW rating |
Compared with DDZ15-7, BZX84-C15 trades precision and thermal robustness for lower cost and smaller size, while MMSZ5245B matches the SOD123 form factor but sacrifices voltage accuracy and leakage performance-making DDZ15-7 optimal for high-stability reference roles.
Availability
DDZ15-7 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and analog signal conditioning requiring stable component supply, consistent parametric performance, and automotive-grade traceability.
Supply support for DDZ15-7 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, application-optimized components for automotive, industrial, and consumer markets.
The DDZ series targets precision voltage reference applications demanding tight Zener tolerance, low impedance, and extended temperature operation-designed specifically for next-generation power management and sensing systems.
FAQ
What is the maximum power dissipation for DDZ15-7 at 75°C ambient?
At TL = +75°C, DDZ15-7 supports 500 mW power dissipation per the datasheet's note 6. This derating reflects improved thermal conduction when mounted on a heatsinked leadframe or thermally enhanced PCB layout, exceeding its 470 mW rating at 25°C ambient.
Does DDZ15-7 have automotive qualification?
No-DDZ15-7 is the commercial-grade variant. Automotive-qualified equivalents are designated with a 'Q' suffix (e.g., DDZ15Q-7), which are AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities per Diodes' product definitions.
How is cathode polarity identified on the SOD123 package?
The cathode is marked by a visible molded band near one end of the SOD123 body. In top-view orientation, the banded end corresponds to the cathode terminal; the opposite end is the anode. This marking aligns with JEDEC-standard SOD123 polarity conventions.
What is the typical temperature coefficient of DDZ15-7?
Based on Figure 17 in DS30407 Rev. 21-2, DDZ15-7 exhibits a typical temperature coefficient of +0.06 %/°C, falling within the +0.04 %/°C to +0.08 %/°C range shown for 10–20 V Zener devices-enabling predictable, monotonic voltage drift with temperature rise.
DDZ15-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 18 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12 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
DDZ15-7 FAQ
1.How can I place an order for DDZ15-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ15-7 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 DDZ15-7 reliable?
The price and inventory of DDZ15-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ15-7 is usually 5 days.
3.What payment methods are accepted for DDZ15-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ15-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ15-7?
DDZ15-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ15-7 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 DDZ15-7?
For technical support, including DDZ15-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ15-7 requirements.
6.How does Aetrix verify that DDZ15-7 is sourced from the original manufacturer or authorized distributors?
All DDZ15-7 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 DDZ15-7 meets industry standards.
7.What is the process for return or replacement of DDZ15-7?
All DDZ15-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ15-7, 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 DDZ15-7 part is unused and in its original packaging.
Return procedure for DDZ15-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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