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Diodes Incorporated DDZ9704-7
- Part No.:
- DDZ9704-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9704-7.pdf
- Description:
- DIODE ZENER 17V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:52,720
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Product details
Overview
DDZ9704-7 from Diodes Incorporated is a surface-mount low-current Zener diode with a nominal zener voltage of 17 V (min 16.15 V, max 17.85 V), rated for 500 mW power dissipation on FR-4 PCB at TL = +75°C, specified at 50 µA test current, and housed in an SOD123 package. It serves as a precision voltage reference or overvoltage clamp in low-power portable and battery-operated circuits.
For engineers reviewing the DDZ9704-7 datasheet, DDZ9704-7 pinout, DDZ9704-7 application, or DDZ9704-7 equivalent, key selection criteria include its 17 V zener voltage tolerance, 0.05 µA reverse leakage at 12.9 V, temperature coefficient behavior near zero crossing (~0.02 %/°C per Fig. 18), and SOD123 mechanical compatibility with automated assembly.
Technical Context
This device operates as a two-terminal voltage-regulating element relying on controlled reverse-biased avalanche breakdown. Its low 50 µA test current enables stable regulation in micro-power bias networks where quiescent current must remain below 100 µA.
The SOD123 package delivers thermal resistance of 150 °C/W (junction-to-lead) and 340 °C/W (junction-to-ambient), supporting operation from –65 °C to +150 °C. Its cathode band marking and matte tin–annealed terminals ensure unambiguous polarity identification and reliable solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17 V nominal, 16.15–17.85 V range at IZT = 50 µA - defines stable clamping point for low-current reference nodes. |
| Power Dissipation (PD) | 500 mW on FR-4 at TL = +75°C - sets maximum continuous power handling in standard PCB layout. |
| Reverse Leakage (IR) | 0.05 µA max at VR = 12.9 V - ensures minimal parasitic current draw in high-impedance bias chains. |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - supports use as low-drop rectifier or ESD protection path in dual-role designs. |
| Thermal Resistance (RθJL) | 150 °C/W - enables predictable junction temperature rise when lead-mounted heat sinking is applied. |
| Operating Temperature | –65 °C to +150 °C - validated for extended industrial and automotive under-hood environments. |
Pinout & Package
Package: SOD123 - surface-mount plastic case (UL 94V-0), 0.01 g mass, cathode band marking, matte tin–annealed Alloy 42 leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse breakdown return path | Connected to lower-potential node; forms reference ground return in shunt regulator configuration. |
| Cathode | Forward current exit / Zener breakdown input | Marked with band; connected to higher-potential rail to be regulated or clamped. |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in nanoampere-level bias networks without loading error. |
| Automated assembly compatibility | SOD123 footprint with J-STD-020 Level 1 moisture sensitivity - eliminates bake requirements and supports high-throughput pick-and-place. |
| Green material compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets IPC-1752A reporting and automotive ELV directives. |
| Thermal performance on FR-4 | 340 °C/W RθJA with 1-inch² pad - allows accurate thermal modeling for derating in compact PCB layouts. |
Applications
| Battery Voltage Monitor | Low-Power Sensor Biasing |
|---|---|
|
Use Scenario: Monitoring Li-ion cell voltage during sleep mode in wearables using a high-impedance resistive divider. IC Role / Device Role / Timing Role: Zener reference node for ADC input scaling and overvoltage detection threshold. Use Value: 0.05 µA leakage prevents measurable discharge over weeks of standby, preserving battery shelf life. |
Use Scenario: Providing stable 17 V bias to MEMS pressure sensor amplifier stage in IoT environmental node. IC Role / Device Role / Timing Role: Low-current shunt reference ensuring consistent gain and offset across temperature. Use Value: ±5% VZ tolerance and <0.03 %/°C TC near 17 V minimize calibration drift across –40 °C to +85 °C. |
| USB-C Port Protection | Industrial PLC Input Conditioning |
|
Use Scenario: Clamping transient surges on USB-C CC line during hot-plug events in portable docking stations. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp limiting CC line to safe levels before controller IC damage. Use Value: 500 mW rating sustains 100 ms surge pulses without degradation; SOD123 footprint fits tight board space. |
Use Scenario: Stabilizing 24 V DC input to analog front-end of modular PLC I/O card operating in factory ambient. IC Role / Device Role / Timing Role: Primary overvoltage suppression element upstream of TVS and LDO stages. Use Value: –65 °C to +150 °C rating ensures reliability in uncontrolled cabinet environments; RoHS/Green compliance meets CE/UL mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-current Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16LT1G | 16 V nominal, ±5% tolerance, 300 mW PD, SOT-23 package | Higher power density but larger footprint; 1 µA leakage at 12.8 V vs. 0.05 µA | Select when board space permits SOT-23 and tighter thermal coupling to copper is needed. |
| MMSZ5246B-7-F | 16 V nominal, ±5% tolerance, 500 mW PD, SOD-123 package, 100 nA leakage at 12 V | Near-identical package and power rating; lower leakage but 1 V lower VZ | Choose when 16 V reference suffices and sub-µA leakage is critical for ultra-low-power wake-up circuits. |
Compared with BZX84-C16LT1G and MMSZ5246B-7-F, DDZ9704-7 uniquely delivers 17 V regulation with 0.05 µA leakage in SOD123 - optimizing for systems requiring precise mid-range voltage clamping without compromising standby current or board area.
Availability
DDZ9704-7 is available at Aetrix Electronics and suitable for battery-powered wearables, industrial sensor nodes, USB-C interface protection, and programmable logic controller input conditioning requiring stable component supply and long-lifecycle support.
Supply support for DDZ9704-7 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, specializing in high-reliability components for industrial, automotive, and consumer markets.
DDZ9704-7 belongs to the DDZ9678–DDZ9717 Zener diode family, engineered specifically for low-current, high-stability voltage reference and clamping in space-constrained, energy-sensitive applications.
FAQ
What is the maximum reverse voltage (VR) at which DDZ9704-7 guarantees ≤0.05 µA leakage?
DDZ9704-7 guarantees ≤0.05 µA reverse leakage current at VR = 12.9 V, as specified in the Electrical Characteristics table. This value is derived from the 75% rule for zeners above 12 V and is measured under standard conditions (TA = +25°C, short pulse test to avoid self-heating).
Can DDZ9704-7 be used in automotive applications?
Yes - the automotive-grade variant DDZ9704Q-7 is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. The standard DDZ9704-7 is not automotive-qualified but shares identical electrical and thermal specifications; only the Q-suffix version meets full automotive change control and traceability requirements.
How does the temperature coefficient behave near 17 V?
Per Figure 18 in DS30410 Rev. 17-2, the temperature coefficient of DDZ9704-7 is approximately +0.02 %/°C at 17 V - indicating very low drift and near-zero TC crossing between 16 V and 18 V, making it suitable for stable reference applications across –40 °C to +125 °C ambient ranges.
Is the SOD123 package compatible with reflow profiles for lead-free soldering?
Yes - DDZ9704-7's matte tin–annealed terminals meet J-STD-020 moisture sensitivity Level 1 and are qualified for standard Pb-free reflow profiles (peak 260 °C, 20–40 sec). No pre-bake is required, and the UL 94V-0 mold compound withstands repeated thermal cycling without delamination.
DDZ9704-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 17 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12.9 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
DDZ9704-7 FAQ
1.How can I place an order for DDZ9704-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9704-7 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 DDZ9704-7 reliable?
The price and inventory of DDZ9704-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9704-7 is usually 5 days.
3.What payment methods are accepted for DDZ9704-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9704-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9704-7?
DDZ9704-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9704-7 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 DDZ9704-7?
For technical support, including DDZ9704-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9704-7 requirements.
6.How does Aetrix verify that DDZ9704-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9704-7 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 DDZ9704-7 meets industry standards.
7.What is the process for return or replacement of DDZ9704-7?
All DDZ9704-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9704-7, 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 DDZ9704-7 part is unused and in its original packaging.
Return procedure for DDZ9704-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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