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Diodes Incorporated DDZ9699-7
- Part No.:
- DDZ9699-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9699-7.pdf
- Description:
- DIODE ZENER 12V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:141,238
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Product details
Overview
DDZ9699-7 from Diodes Incorporated is a surface-mount low-current Zener diode in SOD123 package, rated for 12 V nominal zener voltage (11.4–12.6 V range), 50 µA test current, and 500 mW power dissipation at TL = +75°C on FR-4 PCB. It exhibits 9.1 V reverse breakdown voltage at VR = 9.1 V with IR ≤ 0.05 µA, and features ultra-low leakage ideal for precision voltage reference and battery-powered sensor biasing.
For engineers reviewing the DDZ9699-7 datasheet, DDZ9699-7 pinout, DDZ9699-7 application, or DDZ9699-7 equivalent, this device is selected for low-power analog reference design, portable instrumentation front-end regulation, and ESD-protected signal-level clamping where stable 12 V zener behavior under microamp bias is required.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage tolerance (±5% at 12 V) and low dynamic impedance - typically 120 Ω at IZT = 50 µA per Fig. 12. Its temperature coefficient is +0.07 %/°C near 12 V, enabling predictable drift compensation in ambient ranges from –65°C to +150°C.
The device uses an alloy-42 leadframe with matte tin annealed finish, meets J-STD-020 Level 1 moisture sensitivity, and is fully RoHS-compliant, halogen-free, and antimony-free per Diodes Incorporated's "Green" definition (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 12 V - precise DC reference point for low-current bias networks |
| Zener Voltage Range | 11.4–12.6 V - ±5% tolerance ensures consistent clamping across production lots |
| Test Current (IZT) | 50 µA - enables operation from micro-power sources without loading error |
| Max Reverse Leakage (IR) | ≤0.05 µA @ VR = 9.1 V - critical for high-impedance node stability and battery life |
| Power Dissipation | 500 mW @ TL = +75°C on FR-4 - supports thermal reliability in compact PCB layouts |
| Zener Impedance (ZZT) | 120 Ω typical @ IZT = 50 µA - defines voltage regulation stiffness under small-signal variation |
| Forward Voltage (VF) | 0.9 V @ IF = 10 mA - usable as low-drop rectifier or polarity indicator in dual-function circuits |
Pinout & Package
Package: SOD123 - surface-mount plastic case (UL 94V-0), 0.01 g weight, cathode band marking. Dimensions: D = 1.40–1.70 mm, E = 2.55–2.85 mm, He = 3.55–3.85 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; establishes reference return path in shunt regulator topology |
| Cathode | Zener breakdown terminal / voltage clamp input | Accepts input voltage to be regulated; reverse-biased operation defines 12 V clamping threshold |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - eliminates need for high-bias resistors, reduces quiescent power in IoT sensors |
| Thermal resistance (Junction-to-Lead) | 150 °C/W - enables direct heat transfer to PCB copper, improving long-term reliability at elevated ambient |
| Cathode band polarity marking | Visible molded band on SOD123 body - ensures correct orientation during automated pick-and-place assembly |
| Lead-free & Green compliance | Halogen- and antimony-free, RoHS 3 compliant - satisfies strict environmental mandates for medical and consumer electronics |
Applications
| Portable Gas Sensor Biasing | USB-C Power Negotiation Reference |
|---|---|
|
Use Scenario: Providing stable 12 V bias to electrochemical gas sensing elements in handheld air quality monitors. IC Role / Device Role / Timing Role: Shunt voltage reference for analog front-end amplifier bias network. Use Value: Ultra-low 0.05 µA leakage prevents signal offset drift over 10-year field deployment. |
Use Scenario: Generating accurate 12 V reference for USB PD sink CC line voltage detection circuitry. IC Role / Device Role / Timing Role: Precision clamping element in comparator input divider chain. Use Value: ±5% zener tolerance ensures reliable PD contract negotiation within USB-IF specification limits. |
| Industrial RTD Signal Conditioning | Automotive Cabin Controller Voltage Clamp |
|
Use Scenario: Stabilizing excitation voltage for 3-wire Pt100 RTD bridges in programmable logic controller I/O modules. IC Role / Device Role / Timing Role: Low-drift voltage reference in ratiometric measurement path. Use Value: +0.07 %/°C TC minimizes temperature-induced gain error across –40°C to +85°C operating range. |
Use Scenario: Protecting LIN bus transceiver inputs from load-dump transients in automotive HVAC control units. IC Role / Device Role / Timing Role: Secondary clamping stage after primary TVS, limiting voltage to 12.6 V max. Use Value: 500 mW rating sustains 100 ms load-dump pulses without parametric shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12LT1G | 12 V ±5%, 350 mW rating, SOT-23 package, higher ZZT (~250 Ω) | Higher thermal resistance (RθJA = 375 °C/W) limits use in dense layouts | Prefer when board space allows SOT-23 and lower cost is prioritized over thermal margin |
| MMSZ5242B-TP | 12 V ±5%, 500 mW, SOD-123, but IR = 0.1 µA @ VR = 9.1 V (2× higher leakage) | Reduced long-term stability in high-impedance bias networks | Acceptable for non-critical industrial controls where leakage <0.1 µA is sufficient |
Compared with BZX84-C12LT1G and MMSZ5242B-TP, DDZ9699-7 delivers superior thermal performance (RθJL = 150 °C/W), lowest leakage (0.05 µA), and tighter process control for mission-critical analog references - making it optimal for battery-constrained and automotive-grade designs.
Availability
DDZ9699-7 is available at Aetrix Electronics and suitable for portable instrumentation, USB power delivery subsystems, industrial RTD interfaces, and automotive cabin controllers requiring stable component supply with full traceability and lifecycle continuity.
Supply support for DDZ9699-7 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 DDZ9678–DDZ9717 series belongs to Diodes' precision low-current Zener portfolio, engineered specifically for micro-power voltage reference and clamping in space-constrained, battery-operated, and automotive-qualified systems.
FAQ
What is the maximum allowable continuous reverse voltage for DDZ9699-7 before breakdown?
The DDZ9699-7 begins controlled zener breakdown at its nominal 12 V rating, with guaranteed operation between 11.4 V (min) and 12.6 V (max) at IZT = 50 µA. Applying >12.6 V continuously without current limiting will cause uncontrolled power dissipation and potential failure. Designers must use a series resistor to limit IZ to ≤50 µA for stable regulation.
Can DDZ9699-7 be used in place of a standard 12 V Zener like 1N4742A?
No - the 1N4742A is a 1 W, through-hole device with IZT = 21 mA and vastly different thermal behavior. DDZ9699-7 is optimized for microamp bias (50 µA), SMD assembly, and low-leakage applications. Substituting it into legacy 1N4742A circuits risks insufficient current drive and unstable regulation due to mismatched impedance and power handling.
Does DDZ9699-7 meet AEC-Q101 qualification?
The DDZ9699-7 is the standard industrial version. The automotive-qualified variant is DDZ9699Q-7, which carries AEC-Q101 qualification, PPAP capability, and is manufactured in IATF 16949-certified facilities. DDZ9699-7 itself is not AEC-Q101 rated and should not be used in automotive safety-critical systems unless explicitly validated by the end customer.
What is the significance of the "-7" suffix in DDZ9699-7?
The "-7" denotes tape-and-reel packaging: 3,000 units per reel. This format is optimized for automated SMT placement. Alternative packaging includes "-13" (10,000 units/reel). The base part number DDZ9699 identifies the 12 V Zener variant; no functional difference exists between -7 and -13 versions beyond quantity and reel specifications.
DDZ9699-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 9.1 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
DDZ9699-7 FAQ
1.How can I place an order for DDZ9699-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9699-7 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 DDZ9699-7 reliable?
The price and inventory of DDZ9699-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9699-7 is usually 5 days.
3.What payment methods are accepted for DDZ9699-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9699-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9699-7?
DDZ9699-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9699-7 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 DDZ9699-7?
For technical support, including DDZ9699-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9699-7 requirements.
6.How does Aetrix verify that DDZ9699-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9699-7 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 DDZ9699-7 meets industry standards.
7.What is the process for return or replacement of DDZ9699-7?
All DDZ9699-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9699-7, 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 DDZ9699-7 part is unused and in its original packaging.
Return procedure for DDZ9699-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ9699-7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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