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Diodes Incorporated DDZ9693-7
- Part No.:
- DDZ9693-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9693-7.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,003
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Product details
Overview
DDZ9693-7 from Diodes Incorporated is a surface-mount low-current Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C on FR-4 PCB, with nominal zener voltage of 7.5 V (min 7.13 V, max 7.88 V) at 50 µA test current, and reverse leakage current ≤0.1 µA at VR = 5.7 V. It is optimized for low-bias, battery-powered sensing and reference circuits.
For engineers reviewing the DDZ9693-7 datasheet, DDZ9693-7 pinout, DDZ9693-7 application, or DDZ9693-7 equivalent, this device serves as a precision voltage reference in portable instrumentation, power supply feedback paths, and overvoltage protection clamping where low test current and tight voltage tolerance are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation under low-current conditions (IZT = 50 µA), with thermal resistance junction-to-lead of 150 °C/W enabling reliable operation on standard PCB layouts. Its specified leakage current (≤0.1 µA at 5.7 V) ensures minimal quiescent power draw in always-on monitoring circuits.
The device exhibits a temperature coefficient of approximately +0.04 %/°C near 7.5 V (per Fig. 17), supporting predictable drift behavior in ambient-temperature-varying applications. Its SOD123 package complies with J-STD-020 Level 1 moisture sensitivity and features matte tin annealed terminals for robust solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 7.5 V - Stable regulation point at 50 µA, ±4.5% tolerance (7.13–7.88 V) |
| Power Dissipation | 500 mW - Maximum continuous power on FR-4 with 1-inch² pad at TL = +75°C |
| Reverse Leakage Current | ≤0.1 µA at VR = 5.7 V - Enables ultra-low standby current in battery-critical designs |
| Test Current | 50 µA - Low bias requirement ideal for energy-constrained sensor nodes and wearables |
| Thermal Resistance (J-to-L) | 150 °C/W - Supports thermal management without heatsinking on standard PCB traces |
| Forward Voltage | 0.9 V at IF = 10 mA - Confirmed conduction threshold for polarity verification and ESD protection roles |
Pinout & Package
Package: SOD123 - Surface-mount plastic case (UL 94V-0), 0.01 g weight, cathode band marking, matte tin annealed terminals over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse breakdown reference node | Connected to lower-potential side in Zener clamp or reference configuration |
| Cathode | Forward current exit / Zener voltage output node | Marked by band; delivers regulated 7.5 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | 50 µA IZT enables use in microamp-level bias networks without loading error |
| Tight voltage tolerance | ±4.5% (7.13–7.88 V) supports accurate analog signal conditioning and ADC reference scaling |
| Automated assembly compatibility | SOD123 footprint and leadframe design ensure high-yield pick-and-place and reflow reliability |
| Green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), RoHS 3 compliant |
Applications
| Portable Gas Sensor Calibration | Battery Voltage Monitor Reference |
|---|---|
Use Scenario: Calibrating electrochemical gas sensors requiring stable sub-10 V reference in handheld analyzers. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 7.5 V bias for sensor excitation and ADC reference divider. Use Value: 50 µA test current minimizes battery drain; ±4.5% tolerance ensures calibration repeatability across operating temperature. |
Use Scenario: Monitoring Li-ion cell voltage in wearable health devices with 2.8–4.2 V range. IC Role / Device Role / Timing Role: Clamping reference in resistive divider network feeding comparator input for low-battery alert. Use Value: ≤0.1 µA leakage at 5.7 V prevents false triggers during deep sleep; SOD123 footprint saves board space. |
| USB-C Power Delivery Feedback | Industrial PLC Input Protection |
Use Scenario: Providing precise 7.5 V reference for VBUS feedback in USB-C PD sink controllers. IC Role / Device Role / Timing Role: Secondary voltage reference stabilizing optocoupler feedback loop in isolated buck-boost converters. Use Value: 500 mW rating handles transient surges; thermal resistance of 150 °C/W maintains stability under load-step conditions. |
Use Scenario: Overvoltage clamping on 24 V DC digital input channels in factory automation modules. IC Role / Device Role / Timing Role: Shunt protection element limiting input voltage to downstream logic interface ICs. Use Value: Cathode-band polarity marking ensures correct orientation in high-volume automated assembly; RoHS 3 compliance meets industrial environmental mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 (Diodes Inc.) | Same 7.5 V nominal, but rated at 300 mW and tested at 5 mA; higher leakage (≤1 µA @ 5.7 V) | Higher power handling unsuitable for ultra-low-current systems; less stable at microamp bias | Select DDZ9693-7 when circuit bias current is <100 µA or thermal budget is constrained |
| MMSZ5235B (ON Semiconductor) | 7.5 V nominal, 500 mW rating, but tested at 20 mA; leakage ≤1 µA @ 5.7 V; SOD-123 package | Requires higher bias current, increasing quiescent power; less suitable for battery longevity-critical designs | Choose DDZ9693-7 for applications demanding 50 µA test current and ≤0.1 µA leakage at VR |
Compared with BZX84-C7V5 and MMSZ5235B, DDZ9693-7 uniquely delivers 7.5 V regulation at 50 µA with ≤0.1 µA leakage-enabling precision reference functionality in energy-harvesting and multi-year battery-powered systems where other Zeners fail to meet low-IQ requirements.
Availability
DDZ9693-7 is available at Aetrix Electronics and suitable for portable instrumentation, battery voltage monitoring, USB-C power delivery feedback, and industrial input protection requiring stable component supply with guaranteed long-term continuity.
Supply support for DDZ9693-7 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 integrated circuits, specializing in high-performance, high-reliability components for power management, signal integrity, and protection applications.
DDZ9693-7 belongs to the DDZ9678–DDZ9717 family of low-current Zener diodes designed specifically for battery-powered, portable, and automated-assembly applications requiring precision voltage references at microamp bias levels.
FAQ
What is the maximum allowable power dissipation for DDZ9693-7 on a standard FR-4 PCB?
DDZ9693-7 is rated for 500 mW power dissipation when mounted on FR-4 PCB with minimum recommended pad layout at lead temperature TL = +75°C. Derating is required above this temperature per Figure 1; at TA = +85°C, maximum power drops to approximately 425 mW based on RθJA = 340 °C/W.
Does DDZ9693-7 have automotive qualification?
No - DDZ9693-7 is the standard industrial-grade variant. The automotive-qualified version is DDZ9693Q-7, which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. DDZ9693-7 lacks automotive change control and qualification documentation.
How is the cathode identified on the DDZ9693-7 SOD123 package?
The cathode is marked by a visible band on the body of the SOD123 package, located adjacent to the cathode terminal. This band aligns with the cathode symbol in the top-view diagram in DS30410 Rev. 17–2, page 2, and corresponds to the terminal designated "Cathode" in the Pinout & Package table.
What is the typical zener impedance of DDZ9693-7 at 50 µA?
Per Figure 12 in DS30410 Rev. 17–2, the typical dynamic impedance (ZZT) of DDZ9693-7 is approximately 450 Ω at IZT = 50 µA and TJ = +25°C. This value increases significantly at lower currents and decreases slightly at higher currents within the specified operating range.
DDZ9693-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ9693-7 FAQ
1.How can I place an order for DDZ9693-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9693-7 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 DDZ9693-7 reliable?
The price and inventory of DDZ9693-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9693-7 is usually 5 days.
3.What payment methods are accepted for DDZ9693-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9693-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9693-7?
DDZ9693-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9693-7 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 DDZ9693-7?
For technical support, including DDZ9693-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9693-7 requirements.
6.How does Aetrix verify that DDZ9693-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9693-7 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 DDZ9693-7 meets industry standards.
7.What is the process for return or replacement of DDZ9693-7?
All DDZ9693-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9693-7, 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 DDZ9693-7 part is unused and in its original packaging.
Return procedure for DDZ9693-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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