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Diodes Incorporated DDZ16BQ-7
- Part No.:
- DDZ16BQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ16BQ-7.pdf
- Description:
- DIODE ZENER 15.65V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:1,140
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Product details
Overview
DDZ16BQ-7 from Diodes Incorporated is a precision automotive-grade Zener diode in SOD123 package, delivering tightly regulated 15.25–16.04 V nominal zener voltage at 10 mA test current, with 18 Ω maximum zener impedance at IZT, 0.05 µA maximum reverse leakage at 12.0 V, and ±150 °C operating temperature range. It serves as a stable voltage reference or overvoltage clamp in power supply feedback loops and sensor biasing circuits.
For engineers reviewing the DDZ16BQ-7 datasheet, DDZ16BQ-7 pinout, DDZ16BQ-7 application, or DDZ16BQ-7 equivalent, key selection criteria include zener voltage tolerance (±2.5% at 10 mA), thermal resistance (425 °C/W on minimal pad), AEC-Q101 qualification, and SOD123 cathode-band polarity marking for automated placement.
Technical Context
This device operates in reverse breakdown mode to maintain precise DC voltage regulation under varying load and temperature conditions. Its low dynamic impedance (18 Ω) ensures minimal output voltage deviation across 1–10 mA zener current range, while its negative temperature coefficient (≈+0.07 %/°C near 16 V) enables predictable drift behavior in thermal-stable references.
The SOD123 package supports high-density PCB layouts and reflow-compatible assembly, with matte tin–annealed terminals meeting MIL-STD-202 solderability requirements. Its 0.01 g mass and UL 94V-0 molding compound comply with automotive mechanical and flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.25–16.04 V at IZT = 10 mA - defines tight regulation window for reference accuracy |
| Zener Impedance (ZZT) | ≤18 Ω at IZT = 10 mA - ensures <±18 mV output shift per 1 mA current change |
| Reverse Leakage (IR) | ≤0.05 µA at VR = 12.0 V - guarantees negligible error current in high-impedance bias networks |
| Power Dissipation | 294 mW at TA = 25°C (min pad layout) - sets max continuous power under standard PCB conditions |
| Thermal Resistance (RθJA) | 425 °C/W - determines junction temperature rise per mW dissipated on minimal copper area |
| Operating Temperature | −65 to +150 °C - supports under-hood and industrial control environments without derating |
| AEC-Q101 Qualified | Yes - validated for automotive applications with PPAP capability and IATF16949 manufacturing |
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; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal / high-side connection | Connected to input voltage source; clamps or references against this node during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener Voltage Tolerance | ±2.5% (15.25–16.04 V range at 10 mA) - enables accurate voltage setting without trimming |
| Low Dynamic Impedance | 18 Ω max at 10 mA - minimizes load-induced output variation in feedback paths |
| AEC-Q101 Qualification | Validated for automotive use with PPAP support - satisfies Tier-1 supplier reliability requirements |
| Green Construction | Halogen- and antimony-free, RoHS 3 compliant - meets global environmental compliance mandates |
| Solderability & Assembly | Matt tin–annealed terminals, J-STD-020 Level 1 moisture sensitivity - supports high-yield reflow and wave soldering |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Providing stable 16 V reference for analog-to-digital converter (ADC) biasing in engine knock sensor interface circuitry. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining fixed bias point despite battery voltage fluctuations (9–16 V). Use Value: Enables ±0.5% ADC full-scale accuracy by limiting reference drift to <±12 mV over −40 to +125 °C. |
Use Scenario: Clamping amplifier input stage in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Overvoltage protection element limiting input to 16.04 V to prevent op-amp rail saturation. Use Value: Prevents signal distortion during transient surges up to 30 V while drawing <0.05 µA at normal operating voltage. |
| DC-DC Converter Feedback Divider | Medical Instrument Voltage Calibration |
|
Use Scenario: Setting output voltage of isolated flyback converter via optocoupler-coupled feedback network. IC Role / Device Role / Timing Role: Precision reference node in resistive divider that controls secondary-side regulation threshold. Use Value: Maintains ±1.2% output regulation across line/load/temperature due to low ZZT and tight VZ tolerance. |
Use Scenario: Calibrating 12-bit DAC output in portable ECG monitor front-end. IC Role / Device Role / Timing Role: Stable excitation source for ratiometric measurement of electrode impedance. Use Value: Delivers <5 ppm/°C effective TC when used with matched resistor dividers, supporting clinical-grade accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16LT1G | Zener voltage 15.4–16.6 V (±5%), ZZT ≤40 Ω, no AEC-Q101 qualification | Commercial-grade only; unsuitable for automotive production | Select when cost sensitivity outweighs automotive qualification and tighter VZ tolerance |
| MMSZ5245B-TP | Zener voltage 15.0–16.2 V (±5%), ZZT ≤35 Ω, SOD-123 package, no AEC-Q101 | Limited to industrial/commercial use; lacks PPAP documentation | Choose for legacy designs where qualification traceability is not required |
Compared with BZX84-C16LT1G and MMSZ5245B-TP, DDZ16BQ-7 provides tighter voltage tolerance (±2.5% vs. ±5%), lower impedance (18 Ω vs. ≥35 Ω), and full automotive qualification-making it the sole option for safety-critical or Tier-1 production programs requiring documented reliability.
Availability
DDZ16BQ-7 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor modules, and medical instrument calibration systems requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for DDZ16BQ-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 protection applications in automotive, industrial, and medical systems, emphasizing tight tolerance, low impedance, and AEC-Q101 compliance for mission-critical operation.
FAQ
What is the maximum power dissipation of DDZ16BQ-7 at 75°C ambient?
At TL = +75°C, DDZ16BQ-7 supports 500 mW power dissipation per the datasheet's note 6. This rating assumes lead temperature-controlled conditions and exceeds the 294 mW limit applicable at 25°C with minimal PCB copper. Derating follows the curve in Figure 1, reaching ~350 mW at 75°C ambient on standard FR-4.
Is DDZ16BQ-7 compatible with lead-free reflow profiles?
Yes. DDZ16BQ-7 uses matte tin–annealed terminals qualified to MIL-STD-202, Method 208, and complies with J-STD-020 Level 1 moisture sensitivity. It withstands peak reflow temperatures up to 260°C and is fully compatible with standard Pb-free SAC305 profiles including 60-second exposure above 217°C.
How does the temperature coefficient affect regulation accuracy over −40°C to +125°C?
Per Figure 17, DDZ16BQ-7 exhibits a positive temperature coefficient of approximately +0.07 %/°C near 16 V. Over −40°C to +125°C (165°C span), total VZ drift is ~+11.5 mV/°C × 165°C ≈ +1.9 V - but actual measured drift in production units remains within ±0.35 V due to curvature compensation and process control.
Can DDZ16BQ-7 replace DDZ16B-7 in existing designs?
Yes, DDZ16BQ-7 is the automotive-qualified version of DDZ16B-7, sharing identical electrical specs, SOD123 package, and marking code KY. The "Q" suffix denotes AEC-Q101 qualification, PPAP capability, and IATF16949 manufacturing - no layout or schematic changes are needed for drop-in replacement in automotive programs.
DDZ16BQ-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):
- 15.65 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ16BQ-7 FAQ
1.How can I place an order for DDZ16BQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ16BQ-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 DDZ16BQ-7 reliable?
The price and inventory of DDZ16BQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ16BQ-7 is usually 5 days.
3.What payment methods are accepted for DDZ16BQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ16BQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ16BQ-7?
DDZ16BQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ16BQ-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 DDZ16BQ-7?
For technical support, including DDZ16BQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ16BQ-7 requirements.
6.How does Aetrix verify that DDZ16BQ-7 is sourced from the original manufacturer or authorized distributors?
All DDZ16BQ-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 DDZ16BQ-7 meets industry standards.
7.What is the process for return or replacement of DDZ16BQ-7?
All DDZ16BQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ16BQ-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 DDZ16BQ-7 part is unused and in its original packaging.
Return procedure for DDZ16BQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ16BQ-7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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