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Diodes Incorporated DDZ10B-7
- Part No.:
- DDZ10B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ10B-7.pdf
- Description:
- DIODE ZENER 9.66V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
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Product details
Overview
DDZ10B-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 9.41–9.90 V at 20 mA, ±5% tolerance, 8 Ω dynamic impedance at 20 mA, and 0.1 µA reverse leakage at 8.0 V. It operates in SOD123 package, rated for 470 mW power dissipation at +25°C ambient, and serves as a stable voltage reference in low-power analog monitoring circuits.
For engineers reviewing the DDZ10B-7 datasheet, DDZ10B-7 pinout, DDZ10B-7 application, or DDZ10B-7 equivalent, key selection criteria include zener voltage tightness (±2.5% typical), low temperature coefficient (≈+0.05%/°C near 10 V), SOD123 footprint compatibility, and automotive-grade availability via DDZ10BQ-7 variant.
Technical Context
This device functions as a two-terminal shunt voltage regulator, maintaining a stable reference by operating in reverse breakdown. Its zener voltage is specified at IZT = 20 mA, with low dynamic impedance (8 Ω) ensuring minimal output variation under load current shifts.
Thermal performance is defined for two mounting conditions: 266°C/W junction-to-ambient (FR-4, 1 in² copper pad) and 425°C/W (minimum recommended pad). The cathode band identifies polarity, and the device exhibits negligible forward conduction below 0.9 V at 10 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.41–9.90 V @ IZT = 20 mA - defines stable regulation point with ±2.5% typical spread |
| Zener Impedance (ZZT) | 8 Ω @ 1 kHz, 20 mA - ensures <16 mV output shift per 2 mA load change |
| Reverse Leakage (IR) | 0.1 µA @ VR = 8.0 V - enables ultra-low standby current in battery-backed references |
| Power Dissipation (PD) | 470 mW @ TA = +25°C - supports continuous operation up to ~10 mA average zener current |
| Thermal Resistance (RθJA) | 266 °C/W - requires ≥1 in² copper pour for safe full-power operation at 75°C ambient |
| Temperature Coefficient | +0.05 %/°C (typical near 10 V) - contributes <±1.25 mV/°C drift over –40 to +85°C range |
| Package | SOD123 - industry-standard 2-pin surface-mount outline, compatible with automated pick-and-place |
Pinout & Package
DDZ10B-7 uses the SOD123 plastic molded package (1.55 mm × 2.65 mm × 1.05 mm), with matte tin–annealed terminals on Alloy 42 leadframe. Cathode is marked by a visible band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system GND; forms return path for zener current and defines 0 V reference plane |
| Cathode | Regulated output node | Supplies stable voltage to load; polarity marked by cathode band; must be biased positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% typical (9.41–9.90 V range) - reduces need for post-assembly trimming in voltage monitor designs |
| Low dynamic impedance | 8 Ω at 20 mA - maintains regulation stability across varying load currents in feedback networks |
| Ultra-low reverse leakage | 0.1 µA @ 8.0 V - minimizes error current in high-impedance reference dividers and sensor biasing |
| Automated assembly compatibility | SOD123 footprint with J-STD-020 Level 1 moisture sensitivity - supports high-yield reflow without baking |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) - meets automotive and industrial environmental mandates |
Applications
| Power Supply Monitoring | ADC Reference Stabilization |
|---|---|
|
Use Scenario: Detecting brown-out conditions in 12 V automotive subsystems using resistor-divider + comparator. IC Role / Device Role / Timing Role: Provides precise 10 V reference threshold against which divided rail voltage is compared. Use Value: Tight VZ tolerance ensures detection accuracy within ±0.25 V, eliminating false triggers during transient dips. |
Use Scenario: Biasing the reference input of a 12-bit SAR ADC in portable instrumentation. IC Role / Device Role / Timing Role: Delivers low-drift, low-noise voltage reference independent of supply ripple. Use Value: 8 Ω ZZT and +0.05%/°C TC limit reference error to <0.5 LSB over temperature and load variation. |
| Current Source Regulation | Overvoltage Clamp Protection |
|
Use Scenario: Setting constant current for LED driver IC bias or photodiode transimpedance amplifier. IC Role / Device Role / Timing Role: Establishes fixed voltage drop across series sense resistor to define current magnitude. Use Value: Low ZZT ensures current stability better than ±0.5% across 5–15 mA operating range. |
Use Scenario: Protecting microcontroller I/O pins from 12 V transients in industrial control panels. IC Role / Device Role / Timing Role: Clamps induced surges above 10 V by shunting excess energy to ground. Use Value: 470 mW rating allows brief 100 ms clamping at 47 mA without thermal failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10LT1G | Zener voltage 9.4–10.6 V (±5%), ZZT = 20 Ω @ 5 mA, SOT-23 package | Higher impedance and wider tolerance; smaller footprint but lower power handling (300 mW) | Preferred where board space is constrained and 5 mA operation suffices |
| MMSZ5240B-TP | Zener voltage 9.5–10.5 V (±5%), ZZT = 17 Ω @ 20 mA, SOD-123 package, same power rating | Nearly identical electrical specs but higher typical ZZT; no automotive qualification option | Valid drop-in for non-automotive designs requiring cost-optimized sourcing |
Compared with DDZ10B-7, BZX84-C10LT1G trades precision and power for size, while MMSZ5240B-TP matches package and rating but lacks AEC-Q101 qualification-making DDZ10B-7 the only choice for automotive-critical voltage references.
Availability
DDZ10B-7 is available at Aetrix Electronics and suitable for power supply monitoring, ADC reference stabilization, current source regulation, and overvoltage clamp protection requiring stable component supply and consistent parametric performance.
Supply support for DDZ10B-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 needs in automotive, industrial, and consumer systems, emphasizing tight VZ tolerance, low ZZT, and robust qualification for harsh environments.
FAQ
What is the maximum continuous zener current for DDZ10B-7 at +75°C ambient?
At TL = +75°C, the maximum power dissipation is 500 mW (per Note 6). With VZ ≈ 9.65 V, the corresponding max continuous zener current is approximately 52 mA. This assumes proper PCB thermal relief (RθJL = 132°C/W) and does not exceed the 20 mA test condition used for specification - sustained operation above 20 mA requires derating analysis.
Is DDZ10B-7 suitable for use as a voltage reference in a 16-bit DAC buffer circuit?
Yes - its 8 Ω dynamic impedance and ±2.5% VZ tolerance support 16-bit accuracy when combined with external trimming or calibration. However, long-term drift (±1.5% over 1000 hrs) and temperature coefficient (+0.05%/°C) mean it's best suited for moderate-accuracy applications; for metrology-grade DACs, a buried-zener reference IC is preferred.
Does DDZ10B-7 have automotive qualification, and what does that entail?
Yes - the automotive variant DDZ10BQ-7 is AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities. This includes stress testing for temperature cycling, humidity, mechanical shock, and ESD, plus process controls ensuring lot-to-lot consistency required for safety-critical vehicle subsystems.
How does the SOD123 package affect thermal performance compared to larger packages like DO-35?
The SOD123 package has higher thermal resistance (266°C/W vs. ~200°C/W for DO-35 on equivalent PCBs), limiting its usable power at elevated ambient temperatures. Its compact size also reduces heat-sinking area - designs requiring >300 mW continuous dissipation should verify board layout meets Diodes' recommended 1 in² copper pad to avoid junction overheating.
DDZ10B-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):
- 9.66 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
DDZ10B-7 FAQ
1.How can I place an order for DDZ10B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ10B-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 DDZ10B-7 reliable?
The price and inventory of DDZ10B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ10B-7 is usually 5 days.
3.What payment methods are accepted for DDZ10B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ10B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ10B-7?
DDZ10B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ10B-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 DDZ10B-7?
For technical support, including DDZ10B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ10B-7 requirements.
6.How does Aetrix verify that DDZ10B-7 is sourced from the original manufacturer or authorized distributors?
All DDZ10B-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 DDZ10B-7 meets industry standards.
7.What is the process for return or replacement of DDZ10B-7?
All DDZ10B-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ10B-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 DDZ10B-7 part is unused and in its original packaging.
Return procedure for DDZ10B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ10B-7 Tags
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