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Diodes Incorporated DDZ14Q-7
- Part No.:
- DDZ14Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ14Q-7.pdf
- Description:
- DIODE ZENER 14V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,063
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Product details
Overview
DDZ14Q-7 from Diodes Incorporated is a precision surface-mount Zener diode with nominal zener voltage of 14.0 V (13.65–14.35 V range), 10 mA test current, 16 Ω maximum zener impedance at 1 kHz, 0.05 µA maximum reverse leakage at 11.0 V, and SOD123 package. It delivers tight voltage regulation in low-power reference and protection circuits for industrial power supplies and sensor signal conditioning.
For engineers reviewing the DDZ14Q-7 datasheet, DDZ14Q-7 pinout, DDZ14Q-7 application, or DDZ14Q-7 equivalent, this page provides verified electrical parameters, thermal derating behavior, temperature coefficient data, automotive-grade qualification status (AEC-Q101), and real-world use context for stable voltage reference design.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown to maintain stable output voltage across varying load and temperature conditions. Its 14.0 V nominal zener voltage falls in the medium-voltage range where temperature coefficient crosses zero - confirmed at +0.02 %/°C per Figure 17 - enabling improved thermal stability versus lower- or higher-voltage Zeners.
The SOD123 package supports automated placement and reflow soldering, with thermal resistance of 425 °C/W (minimum pad layout) and 266 °C/W (1-in² copper pad), directly impacting power handling in compact PCB layouts. It is rated for -65 °C to +150 °C operating temperature and qualified to AEC-Q101 for automotive underhood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.65–14.35 V at IZT = 10 mA - defines usable regulation window for 14 V reference designs |
| Zener Impedance (ZZT) | 16 Ω max at f = 1 kHz - ensures minimal output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | 0.05 µA max at VR = 11.0 V - enables ultra-low quiescent current in battery-backed circuits |
| Power Dissipation (PD) | 294 mW at TA = 25°C (min pad layout) - sets absolute max continuous power before thermal shutdown |
| Temperature Coefficient | +0.02 %/°C near 14 V - indicates near-zero drift point, critical for precision analog references |
| Package | SOD123 - 2.65 mm × 1.55 mm × 1.05 mm footprint compatible with high-density PCB assembly |
| Qualification | AEC-Q101 qualified - validated for automotive applications including engine control and ADAS power rails |
Pinout & Package
SOD123 is a two-terminal surface-mount package with cathode indicated by a band on the body. Terminals are matte tin-annealed over Alloy 42 leadframe, fully RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to system ground or lowest potential node in shunt regulator configuration |
| Cathode (banded end) | Zener breakdown terminal / Regulated output node | Connected to input supply via series resistor; maintains stable 14 V at this node under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±2.5% (13.65–14.35 V) at 10 mA - reduces need for post-production trimming in voltage reference circuits |
| Low ZZT | 16 Ω max - minimizes output ripple in feedback paths of DC-DC converters and LDOs |
| AEC-Q101 qualification | Validated for automotive underhood use - supports deployment in engine management and infotainment power domains |
| Green molding compound | UL 94V-0 rated, halogen- and antimony-free - meets IPC-1752A material declaration and OEM sustainability requirements |
| Moisture sensitivity level | MSL Level 1 - allows indefinite floor life without dry-pack storage or baking prior to reflow |
Applications
| Industrial Power Supply Reference | Automotive Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 14 V reference for isolated feedback in 24 V input DC-DC converters used in PLC power modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating optocoupler LED current to maintain precise output voltage regulation. Use Value: Enables ±1% output accuracy over -40 °C to +85 °C ambient, meeting IEC 61000-6-2 immunity requirements. |
Use Scenario: Biasing and clamping front-end amplifier inputs in vehicle cabin temperature sensors. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting input swing to protect op-amp inputs during load dump transients. Use Value: Withstands 12 V system surges up to 40 V while maintaining <0.05 µA leakage below 11 V, preserving sensor offset accuracy. |
| Medical Instrumentation Calibration | IoT Edge Node Voltage Monitoring |
Use Scenario: Serving as primary voltage reference for 16-bit ADC in portable ECG monitor calibration circuitry. IC Role / Device Role / Timing Role: Precision shunt reference establishing known voltage for DAC-based self-calibration sequence. Use Value: Temperature coefficient of +0.02 %/°C minimizes drift-induced gain error across clinical operating range (15–40 °C). |
Use Scenario: Monitoring battery voltage in LPWA gas detector using resistive divider into MCU ADC. IC Role / Device Role / Timing Role: Low-leakage Zener clamping divider output to prevent ADC overvoltage during 3.6 V Li-SOCl₂ cell peak charge. Use Value: 0.05 µA max reverse leakage avoids measurable divider current error, preserving 10 mV measurement resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15LT1G | 15.0 V nominal, ±5% tolerance, 30 Ω ZZT, SOT-23 package | Higher voltage, looser tolerance, higher impedance - less suitable for precision 14 V references | Select only if board space permits SOT-23 and ±5% regulation is acceptable |
| MMSZ5241B-TP | 14.0 V nominal, ±5% tolerance, 25 Ω ZZT, SOD-123 package | Same package but wider VZ tolerance and higher impedance - reduced thermal stability margin | Acceptable for non-critical biasing where cost is prioritized over regulation accuracy |
Compared with DDZ14Q-7, BZX84-C15LT1G shifts regulation point upward and sacrifices precision, while MMSZ5241B-TP retains the same package but trades tighter voltage control for lower cost - making DDZ14Q-7 optimal for AEC-Q101-compliant, high-stability 14 V reference needs.
Availability
DDZ14Q-7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, and medical instrumentation requiring stable component supply with guaranteed long-term availability and automotive-grade traceability.
Supply support for DDZ14Q-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 targets precision voltage reference and overvoltage protection in space-constrained, high-reliability applications - designed specifically for automotive, industrial, and medical systems demanding AEC-Q101 compliance and tight parametric control.
FAQ
What is the maximum power dissipation of DDZ14Q-7 at 75°C ambient?
At TL = +75°C, DDZ14Q-7 supports 500 mW power dissipation per the datasheet's Note 6. This rating assumes direct thermal coupling to a heatsink or thermally enhanced PCB land pattern - not standard FR-4 with minimal copper. Derating curves in Figure 1 confirm linear reduction to ~300 mW at 75°C for typical board mounting.
Is DDZ14Q-7 suitable for use in a 12 V automotive system with load dump protection?
Yes - DDZ14Q-7 is AEC-Q101 qualified and rated for operation from -65°C to +150°C. Its 14.0 V zener voltage provides effective clamping above nominal 12 V bus, and its 0.05 µA leakage at 11.0 V ensures negligible loading during normal operation. It must be paired with an appropriate series current-limiting resistor to handle transient energy.
How does the temperature coefficient of DDZ14Q-7 compare to lower-voltage Zeners like DDZ5V1B?
DDZ14Q-7 exhibits +0.02 %/°C temperature coefficient near its nominal voltage, placing it near the zero-TC crossover point shown in Figure 17. In contrast, DDZ5V1B has -0.06 %/°C (Figure 16), indicating stronger negative drift. This makes DDZ14Q-7 inherently more stable over temperature than sub-10 V Zeners in precision reference roles.
Can DDZ14Q-7 be used in place of DDZ14B-7?
No - DDZ14Q-7 is the automotive-qualified variant (AEC-Q101, PPAP-capable, IATF16949 manufactured), whereas DDZ14B-7 is commercial grade. Both share identical electrical specs and SOD123 packaging, but DDZ14Q-7 includes change control, extended reliability testing, and full automotive documentation required for Tier 1 supply chains.
DDZ14Q-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):
- 14 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 16 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ14Q-7 FAQ
1.How can I place an order for DDZ14Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ14Q-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 DDZ14Q-7 reliable?
The price and inventory of DDZ14Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ14Q-7 is usually 5 days.
3.What payment methods are accepted for DDZ14Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ14Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ14Q-7?
DDZ14Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ14Q-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 DDZ14Q-7?
For technical support, including DDZ14Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ14Q-7 requirements.
6.How does Aetrix verify that DDZ14Q-7 is sourced from the original manufacturer or authorized distributors?
All DDZ14Q-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 DDZ14Q-7 meets industry standards.
7.What is the process for return or replacement of DDZ14Q-7?
All DDZ14Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ14Q-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 DDZ14Q-7 part is unused and in its original packaging.
Return procedure for DDZ14Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ14Q-7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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