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Diodes Incorporated DDZ16B-7
- Part No.:
- DDZ16B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ16B-7.pdf
- Description:
- DIODE ZENER 16V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
DDZ16B-7 from Diodes Incorporated is a surface-mount precision Zener diode with a nominal zener voltage of 15.25–16.04 V at 10 mA test current, ±3% tolerance, 18 Ω dynamic impedance at 10 mA, and 0.05 µA maximum reverse leakage at 12 V. It operates across –65°C to +150°C and delivers stable voltage reference in low-power analog circuits, such as sensor biasing and ADC reference stabilization.
For engineers reviewing the DDZ16B-7 datasheet, DDZ16B-7 pinout, DDZ16B-7 application, or DDZ16B-7 equivalent, this device is selected for tight-voltage-tolerance reference needs in space-constrained PCBs where SOD123 packaging, thermal reliability up to 150°C, and automotive-grade variants (DDZ16BQ-7) are critical design factors.
Technical Context
This Zener diode functions as a two-terminal shunt voltage regulator, maintaining a stable reverse-biased breakdown voltage under controlled current conditions. Its low 18 Ω zener impedance at IZT = 10 mA ensures minimal output voltage variation with load current changes, while its 0.05 µA reverse leakage at VR = 12 V supports high-impedance sensing nodes.
The device uses an alloy-42 leadframe with matte tin annealed finish, rated for solderability per MIL-STD-202 Method 208, and features UL 94V-0 molded plastic packaging. Thermal resistance is 425 °C/W (note 8) on minimal pad layout, enabling predictable derating in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.25–16.04 V at IZT = 10 mA - defines precise regulation point for reference circuits |
| Zener Impedance (ZZT) | 18 Ω at IZT = 10 mA - ensures <±15 mV output shift per ±270 µA current change |
| Reverse Leakage (IR) | 0.05 µA at VR = 12 V - preserves accuracy in high-impedance feedback or bias networks |
| Power Dissipation | 294 mW at TA = 25°C (min. pad layout) - sets max continuous current to ~18.4 mA at 16 V |
| Operating Temperature | –65°C to +150°C - supports industrial and under-hood automotive environments |
| Package | SOD123 - 2.65 mm × 1.55 mm footprint, compatible with standard pick-and-place and reflow |
| Temperature Coefficient | +0.07 %/°C (typ. near 16 V, Fig. 17) - contributes ~±11 mV drift over –40°C to +125°C |
Pinout & Package
DDZ16B-7 is a two-terminal SOD123 package with cathode indicated by a band on the body. The anode and cathode terminals are formed by the alloy-42 leadframe, with matte tin annealed finish ensuring robust solder wetting and intermetallic formation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Breakdown voltage reference node | Connected to regulated voltage rail; reverse-biased operation requires higher potential than anode |
| Anode | Current return path / ground reference | Typically tied to system ground or lower-potential node; completes bias current loop through series resistor |
Key Features
| Feature | Design Value |
|---|---|
| Very tight VZ tolerance | ±3% (15.25–16.04 V range) enables single-supply reference without post-calibration trimming |
| Low zener impedance | 18 Ω at 10 mA ensures stable output under varying load currents in feedback paths |
| SOD123 surface-mount package | 0.01 g weight and 2.65 mm × 1.55 mm footprint support high-density PCB layouts |
| Automotive-qualified variant available | DDZ16BQ-7 meets AEC-Q101, PPAP, and IATF16949 requirements for automotive electronics |
| Halogen- and antimony-free "Green" construction | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies strict environmental compliance mandates |
Applications
| Industrial Sensor Signal Conditioning | ADC Reference Voltage Stabilization |
|---|---|
|
Use Scenario: Biasing bridge sensors (e.g., strain gauges) in PLC analog input modules operating from 24 V rails. IC Role / Device Role / Timing Role: Provides stable 16 V reference for op-amp excitation and ratiometric scaling. Use Value: ±3% VZ tolerance and 18 Ω ZZT limit sensor offset drift to <±0.5 mV over temperature and supply variation. |
Use Scenario: Generating a clean 16 V reference for 16-bit SAR ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Shunt-regulated reference source feeding ADC REF+ pin via RC filter. Use Value: 0.05 µA leakage prevents loading of high-Z RC filter, preserving effective resolution >15.5 bits. |
| Programmable Logic Controller Power Monitoring | Automotive Cabin Control Module Voltage Supervision |
|
Use Scenario: Monitoring 24 V DC bus integrity in industrial controllers using comparator-based undervoltage detection. IC Role / Device Role / Timing Role: Zener-clamped reference for comparator threshold set at 20.8 V (1.3 × 16 V). Use Value: Stable 16 V baseline enables ±0.5 V trip-point accuracy across –25°C to +70°C ambient. |
Use Scenario: Providing regulated bias for LIN transceiver VCC supervision in HVAC control units. IC Role / Device Role / Timing Role: Reference element in discrete reset circuit monitoring 12 V supply rail. Use Value: AEC-Q101-qualified DDZ16BQ-7 variant ensures functional safety compliance and 150°C junction capability. |
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 | 16 V nominal, ±5% tolerance, 40 Ω ZZT @ 5 mA, SOT-23 package | Larger 3-pin SOT-23 footprint; higher impedance reduces regulation stability in precision apps | Select when board space allows larger package and ±5% tolerance is acceptable |
| MMSZ5245B-TP | 16 V nominal, ±5% tolerance, 30 Ω ZZT @ 20 mA, SOD-123 same footprint | Higher test current (20 mA) increases power demand; looser tolerance impacts calibration accuracy | Prefer only if existing BOM uses Micro Commercial Co. parts and 16 V ±5% suffices |
Compared with DDZ16B-7, BZX84-C16LT1G trades tighter voltage tolerance for wider package availability, while MMSZ5245B-TP matches the SOD123 footprint but sacrifices 2% tolerance and adds 12 Ω impedance-reducing regulation fidelity in low-current reference designs.
Availability
DDZ16B-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, ADC reference stabilization, PLC power monitoring, and automotive cabin control requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for DDZ16B-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, serving industrial, computing, communications, and automotive markets with high-reliability components.
DDZ16B-7 belongs to the DDZ5V1B–DDZ43 precision Zener family, engineered for tight-tolerance voltage referencing in automated SMT assembly environments where thermal stability and RoHS/Green compliance are mandatory.
FAQ
What is the maximum continuous reverse current for reliable operation of DDZ16B-7?
The device is rated for 10 mA zener test current (IZT), and its 294 mW power dissipation limit at 25°C with minimal pad layout corresponds to a maximum continuous reverse current of approximately 18.4 mA at 16 V. Exceeding this requires thermal derating per Figure 1, with full derating to zero at 150°C ambient.
Does DDZ16B-7 have automotive qualification?
DDZ16B-7 itself is the commercial-grade part. Its automotive-qualified counterpart is DDZ16BQ-7, which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities. Both share identical electrical specs and SOD123 packaging, differing only in traceability and process controls.
How does the SOD123 package affect thermal performance in real PCB layouts?
Thermal resistance varies significantly with layout: RθJA is 425 °C/W with minimal recommended pads (Note 8), but improves to 266 °C/W with 1 in² copper area (Note 7). In typical 2-layer FR-4 boards with 10 mm² thermal pads, measured RθJA falls between 320–380 °C/W, limiting sustained power to ~220–260 mW at 75°C ambient.
Can DDZ16B-7 replace older Zener diodes like 1N4745A in new designs?
Yes-DDZ16B-7 offers superior specifications: tighter ±3% tolerance vs. ±5% for 1N4745A, lower 18 Ω impedance vs. 20 Ω, smaller SOD123 vs. DO-41 package, and RoHS/Green compliance. Layout redesign is required due to footprint differences, but electrical performance and thermal behavior are improved.
DDZ16B-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):
- 16 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
DDZ16B-7 FAQ
1.How can I place an order for DDZ16B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ16B-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 DDZ16B-7 reliable?
The price and inventory of DDZ16B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ16B-7 is usually 5 days.
3.What payment methods are accepted for DDZ16B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ16B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ16B-7?
DDZ16B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ16B-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 DDZ16B-7?
For technical support, including DDZ16B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ16B-7 requirements.
6.How does Aetrix verify that DDZ16B-7 is sourced from the original manufacturer or authorized distributors?
All DDZ16B-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 DDZ16B-7 meets industry standards.
7.What is the process for return or replacement of DDZ16B-7?
All DDZ16B-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ16B-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 DDZ16B-7 part is unused and in its original packaging.
Return procedure for DDZ16B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ16B-7 Tags
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