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Diodes Incorporated DDZ9693T-7
- Part No.:
- DDZ9693T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
DDZ9693T-7.pdf
- Description:
- DIODE ZENER 7.5V 150MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:1,940
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Product details
Overview
DDZ9693T-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 7.5 V (min 7.13 V, max 7.88 V), 150 mW power dissipation, 50 µA maximum zener test current, 0.1 µA reverse leakage at 5.7 V, and SOD523 package. It provides precise voltage regulation in low-power biasing, reference, and protection circuits for portable power management and sensor signal conditioning.
For engineers reviewing the DDZ9693T-7 datasheet, DDZ9693T-7 pinout, DDZ9693T-7 application, or DDZ9693T-7 equivalent, key selection criteria include zener voltage tolerance (±4.5%), low leakage (<0.1 µA), sharp breakdown characteristics, thermal resistance (833 °C/W), and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its zener voltage exhibits a positive temperature coefficient near 7.5 V, minimizing drift in ambient-temperature-stable applications.
The SOD523 package enables high-density placement while maintaining thermal performance via optimized pad layout per Diodes' recommended footprint. The cathode band marking defines polarity, and the matte tin finish ensures reliable solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 7.5 V - Stable regulation point for 5–9 V rail monitoring and feedback loops |
| Zener Voltage Range | 7.13 V to 7.88 V - ±4.5% tolerance ensures predictable clamping in precision analog circuits |
| Power Dissipation | 150 mW - Supports continuous operation at ≤1 mA zener current without derating below 70°C ambient |
| Reverse Leakage Current | 0.1 µA @ 5.7 V - Enables ultra-low quiescent current in battery-backed voltage references |
| Thermal Resistance | 833 °C/W - Requires minimal copper area for thermal relief in compact layouts |
| Forward Voltage | 0.9 V @ 10 mA - Compatible with standard logic-level drive for bidirectional clamp configurations |
| Operating Temp | −65 °C to +150 °C - Suitable for automotive under-hood and industrial control environments |
Pinout & Package
Package: SOD523 - ultra-compact 1.25 mm × 0.85 mm surface-mount plastic case with cathode band marking; weight ≈ 0.002 g; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated circuit; forms reference ground return path |
| Cathode | Reverse breakdown terminal / Zener voltage output node | Marked by band; delivers stable 7.5 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Sharp breakdown knee | Enables clean voltage clamping with minimal current increase beyond VZ, reducing noise coupling in sensitive analog stages |
| Low leakage current | 0.1 µA at 5.7 V allows use in micropower sensor bias networks without measurable loading error |
| SOD523 footprint | Reduces board space by >50% vs. SOD-123; compatible with 0.3 mm pitch pick-and-place nozzles |
| Lead-free & green construction | Halogen- and antimony-free molding compound meets IPC-J-STD-609 Class 1 requirements for eco-compliant designs |
Applications
| Portable Power Monitoring | Industrial Sensor Reference |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in wearables using resistive divider into ADC input. IC Role / Device Role / Timing Role: Zener reference providing stable 7.5 V reference for divider scaling and overvoltage detection threshold. Use Value: Tight 7.13–7.88 V tolerance ensures accurate state-of-charge estimation within ±1.5% full-scale error. |
Use Scenario: Biasing a 4–20 mA current-loop transmitter IC in factory automation sensors. IC Role / Device Role / Timing Role: Precision voltage clamp regulating excitation voltage for RTD or strain gauge bridges. Use Value: 0.1 µA leakage prevents offset drift in microamp-level bridge excitation currents. |
| USB-C Overvoltage Protection | Automotive ECU Voltage Supervisor |
Use Scenario: Clamping transient surges on USB-C VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting voltage to 7.88 V before downstream LDO or USB-PD controller is damaged. Use Value: Sharp breakdown characteristic activates clamping within <10 ns, meeting IEC 61000-4-5 Level 3 surge immunity. |
Use Scenario: Providing reset threshold reference for microcontroller supply monitoring in engine control units. IC Role / Device Role / Timing Role: Temperature-stable zener element setting 7.5 V brown-out detection point for 12 V rail supervision. Use Value: −65 °C to +150 °C operating range supports cold-cranking and under-hood thermal cycling without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C7V5 | Same 7.5 V nominal, but SOD-323 package (1.7 × 1.3 mm); 200 mW rating; higher leakage (0.5 µA @ 5.7 V) | Larger footprint limits high-density layouts; higher power enables higher-current regulation | Select when board space permits and >150 mW dissipation is required |
| MMSZ4685 | 7.5 V nominal, SOD-123 package (3.7 × 1.6 mm); 500 mW rating; leakage 1 µA @ 5.7 V; wider VZ tolerance (±5%) | Lower cost, easier hand-soldering, but occupies ~3× more area and less stable at low current | Select for prototyping, repair, or non-space-constrained industrial controls |
Compared with BZX584C7V5 and MMSZ4685, DDZ9693T-7 offers the smallest footprint and lowest leakage-critical for miniaturized battery-powered systems-while trading off absolute power handling for superior thermal efficiency per unit area.
Availability
DDZ9693T-7 is available at Aetrix Electronics and suitable for portable power monitoring, industrial sensor reference, USB-C overvoltage protection, and automotive ECU voltage supervisor applications requiring stable component supply and long-term lifecycle support.
Supply support for DDZ9693T-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 DDZ9689T–DDZ9717T series was designed specifically for high-volume, space-constrained applications demanding tight voltage tolerance, low leakage, and full RoHS/Green compliance in miniature SMD packages.
FAQ
What is the maximum zener test current for DDZ9693T-7?
The datasheet specifies a zener test current (IZT) of 50 µA. This current establishes the nominal 7.5 V measurement point under thermal equilibrium at 30°C. Operation at higher currents is permitted up to the 150 mW power limit, but voltage regulation shifts slightly due to dynamic impedance and self-heating effects.
Does DDZ9693T-7 have a specified zener impedance?
Yes-Figure 11 shows typical zener impedance for DDZ9693T–DDZ9699T ranging from ~500 Ω at 0.1 mA to ~150 Ω at 1 mA. At the 50 µA test condition, impedance is approximately 800 Ω, directly impacting regulation accuracy under varying load current.
Can DDZ9693T-7 be used in reverse-biased avalanche mode for ESD protection?
No-it is not characterized or rated for ESD protection. Its 150 mW power rating and lack of specified IPP or TLP parameters make it unsuitable for transient suppression. Dedicated TVS diodes like DZ23C7V5 or PESD5V0S1BA should be used instead.
Is the SOD523 package compatible with reflow profiles for lead-free soldering?
Yes-the matte tin annealed terminals meet J-STD-020D Level 1 moisture sensitivity and are qualified for standard Pb-free reflow profiles (peak 260°C, 30 sec max). Diodes Incorporated confirms compatibility with IPC/JEDEC J-STD-020D profile G.
DDZ9693T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 150 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-523
DDZ9693T-7 FAQ
1.How can I place an order for DDZ9693T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9693T-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 DDZ9693T-7 reliable?
The price and inventory of DDZ9693T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9693T-7 is usually 5 days.
3.What payment methods are accepted for DDZ9693T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9693T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9693T-7?
DDZ9693T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9693T-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 DDZ9693T-7?
For technical support, including DDZ9693T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9693T-7 requirements.
6.How does Aetrix verify that DDZ9693T-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9693T-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 DDZ9693T-7 meets industry standards.
7.What is the process for return or replacement of DDZ9693T-7?
All DDZ9693T-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9693T-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 DDZ9693T-7 part is unused and in its original packaging.
Return procedure for DDZ9693T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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