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Diodes Incorporated DDZ9693S-7
- Part No.:
- DDZ9693S-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
DDZ9693S-7.pdf
- Description:
- DIODE ZENER 7.5V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,569
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Product details
Overview
DDZ9693S-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 7.5 V, ±3.5% tolerance (7.13–7.88 V), 50 µA test current, and 0.1 µA maximum reverse leakage at 5.7 V. It delivers sharp breakdown characteristics in SOD-323 package for voltage reference and regulation in low-power analog circuits.
For engineers reviewing the DDZ9693S-7 datasheet, DDZ9693S-7 pinout, DDZ9693S-7 application, or DDZ9693S-7 equivalent, key selection criteria include zener voltage accuracy, low leakage at sub-breakdown bias, thermal stability across -65°C to +150°C, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This device operates as a two-terminal voltage reference where reverse-biased junction behavior defines stable output voltage under controlled current. Its sharp knee and tight VZ tolerance stem from optimized doping and process control, enabling use in feedback networks and trimming circuits without external compensation.
Thermal resistance of 625°C/W (on standard FR-4 pad layout) and temperature coefficient near 0.03%/°C (per Fig. 17) support stable operation up to +150°C ambient. The SOD-323 package's low 0.004 g mass and moisture sensitivity level 1 ensure robust reflow performance and long-term reliability in compact designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V nominal, 7.13–7.88 V range at IZT = 50 µA - ensures precise DC biasing in analog signal chains |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 5.7 V - minimizes error current in high-impedance reference nodes |
| Power Dissipation (PD) | 200 mW at TA = 25°C - supports continuous operation in space-constrained PCB layouts |
| Thermal Resistance (RθJA) | 625°C/W on FR-4 with recommended pads - enables thermal-aware layout without heatsinking |
| Operating Temperature | -65°C to +150°C - suitable for industrial and automotive under-hood environments |
| Package | SOD-323 - 2.3–2.7 mm length, 1.2–1.4 mm width, 0.25–0.35 mm thickness - compatible with 0402-class pick-and-place |
Pinout & Package
Two-terminal device in SOD-323 package: cathode marked by band; anode and cathode terminals defined by polarity marking per JEDEC standard. No internal leads - terminals are formed from Alloy 42 leadframe with matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common when used in shunt regulation; establishes reference potential |
| Cathode | Zener breakdown terminal / Output voltage node | Provides stable 7.5 V relative to anode when reverse biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp breakdown knee | Enables accurate voltage clamping at low test currents (50 µA), reducing power overhead in battery-powered references |
| Tight VZ tolerance (±3.5%) | Reduces need for post-assembly trimming in production test, improving yield for precision analog modules |
| Low leakage (0.1 µA @ 5.7 V) | Maintains reference integrity in high-impedance divider networks, e.g., ADC input scaling or op-amp feedback |
| RoHS-compliant & "Green" molding compound | Meets IPC-J-STD-609 Class 1 halogen-free requirements and UL 94V-0 flammability rating for safety-critical PCBs |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Shunt voltage reference providing 7.5 V bias to Wheatstone bridge, rejecting supply ripple via dynamic impedance <100 Ω. Use Value: Maintains <0.1% full-scale error over -40°C to +85°C due to low TC and tight initial tolerance. | Use Scenario: Generating stable reference for LIN transceiver voltage monitor in door module ECUs. IC Role / Device Role / Timing Role: Precision clamp regulating local 7.5 V rail feeding comparator input for battery undervoltage detection. Use Value: Ensures reliable trip point across 12 V system transients (load dump, cold crank) with <0.5% drift. |
| Portable Medical Pulse Oximeter Bias | IoT Node Battery Voltage Monitor |
Use Scenario: Supplying regulated bias to red/IR LED drivers in wearable SpO₂ sensors. IC Role / Device Role / Timing Role: Low-leakage Zener establishing fixed forward drop for current-source control, minimizing quiescent current. Use Value: Enables >100-hour battery life by limiting reference current to ≤50 µA while maintaining LED intensity accuracy. | Use Scenario: Monitoring Li-ion cell voltage in Bluetooth LE asset trackers during deep-sleep cycles. IC Role / Device Role / Timing Role: Passive voltage divider element with 7.5 V Zener clamping ADC input to prevent overvoltage during wake-up bursts. Use Value: Survives 100,000+ sleep/wake cycles without parameter shift due to SOD-323 mechanical stability and moisture resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V nominal, but ±5% tolerance (7.13–7.88 V vs. 7.13–7.88 V identical range), higher 1 µA leakage at 5.7 V | Less suitable for ultra-low-power sensor bias where leakage dominates error budget | Select DDZ9693S-7 when leakage <0.1 µA is required; BZX84-C7V5 acceptable for cost-sensitive consumer applications |
| MMSZ5235B | 7.5 V nominal, ±5% tolerance, 100 nA leakage at 5.7 V - lower leakage but wider VZ spread | Better for low-leakage needs but requires tighter board-level calibration due to looser tolerance | Choose MMSZ5235B only if leakage is primary constraint and calibration infrastructure exists |
Compared with BZX84-C7V5 and MMSZ5235B, DDZ9693S-7 uniquely balances tight 3.5% VZ tolerance and sub-0.1 µA leakage - critical for uncalibrated industrial sensor front-ends where both accuracy and quiescent current matter.
Availability
DDZ9693S-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control modules, portable medical devices, and IoT node battery monitoring requiring stable component supply and RoHS-compliant sourcing.
Supply support for DDZ9693S-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 and manufacturing operations across Asia and the Americas.
The DDZ9689S–DDZ9717S series was developed for high-precision, low-power voltage reference applications in space-constrained, thermally demanding environments - emphasizing manufacturability, consistency, and long-term parametric stability.
FAQ
What is the maximum power dissipation for DDZ9693S-7 at 85°C ambient?
At 85°C ambient, derated power dissipation is 120 mW, calculated using the linear derating curve (200 mW at 25°C, zero at 150°C). This assumes mounting on FR-4 with Diodes Incorporated's recommended pad layout per AP02001.
Does DDZ9693S-7 have AEC-Q101 qualification?
No - DDZ9693S-7 is not AEC-Q101 qualified. Only DDZ9705S (marked with Note 5 in the datasheet) carries AEC-Q101 qualification. DDZ9693S-7 meets industrial-grade reliability standards but lacks automotive-specific stress testing.
Can DDZ9693S-7 be used in place of a 7.5 V TL431 shunt regulator?
No - DDZ9693S-7 is a passive two-terminal Zener diode, lacking the active feedback, adjustable threshold, and 2.5 V reference of TL431. It cannot replace TL431 in programmable regulator or error amplifier configurations.
What is the typical zener impedance at 50 µA for DDZ9693S-7?
Per Figure 12, typical zener impedance is ~120 Ω at 50 µA and 25°C. Impedance decreases with increasing current and rises slightly at lower temperatures - critical for ripple rejection in low-noise reference designs.
DDZ9693S-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 200 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-323
DDZ9693S-7 FAQ
1.How can I place an order for DDZ9693S-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9693S-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 DDZ9693S-7 reliable?
The price and inventory of DDZ9693S-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9693S-7 is usually 5 days.
3.What payment methods are accepted for DDZ9693S-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9693S-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9693S-7?
DDZ9693S-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9693S-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 DDZ9693S-7?
For technical support, including DDZ9693S-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9693S-7 requirements.
6.How does Aetrix verify that DDZ9693S-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9693S-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 DDZ9693S-7 meets industry standards.
7.What is the process for return or replacement of DDZ9693S-7?
All DDZ9693S-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9693S-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 DDZ9693S-7 part is unused and in its original packaging.
Return procedure for DDZ9693S-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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