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Diodes Incorporated DDZ9703T-7
- Part No.:
- DDZ9703T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
DDZ9703T-7.pdf
- Description:
- DIODE ZENER 16V 150MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:10,065
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Product details
Overview
DDZ9703T-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 16 V (min 15.2 V, max 16.8 V), 150 mW power dissipation, 0.05 µA reverse leakage at 12.1 V, SOD523 package, and sharp breakdown characteristics for precision voltage regulation in low-power analog circuits.
For engineers reviewing the DDZ9703T-7 datasheet, DDZ9703T-7 pinout, DDZ9703T-7 application, or DDZ9703T-7 equivalent, this part serves as a compact, RoHS-compliant voltage reference in space-constrained DC biasing, overvoltage protection, and signal-level clamping designs requiring stable 16 V regulation at ≤50 mA test current.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals under varying load or supply conditions. Its sharp knee and low dynamic impedance (typ. <40 Ω at IZT = 5 mA) ensure minimal voltage deviation during transient current changes.
Designed for thermal equilibrium at 30°C, it exhibits a temperature coefficient of approximately +0.07 %/°C near 16 V, enabling predictable drift behavior in ambient ranges from –65°C to +150°C. The SOD523 package supports automated placement and delivers 833 °C/W junction-to-ambient thermal resistance on FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 16 V - Stable regulation point at 50 mA test current; ±5% tolerance band (15.2–16.8 V) |
| Power Dissipation | 150 mW - Maximum continuous power handling on standard FR-4 board; derates linearly above 25°C |
| Reverse Leakage Current | 0.05 µA @ 12.1 V - Ensures negligible standby current draw in high-impedance reference nodes |
| Zener Test Current | 50 mA - Defined operating point for voltage specification; enables accurate matching in production |
| Forward Voltage | 0.9 V @ 10 mA - Low conduction loss when used in bidirectional clamp configurations |
| Thermal Resistance | 833 °C/W - Limits junction temperature rise; requires minimal copper area for safe operation |
Pinout & Package
Package: SOD523 - ultra-compact 2-pin surface-mount plastic case (0.85 mm × 1.25 mm × 0.65 mm), cathode identified by band marking, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node in Zener mode | Enables standard diode conduction path; referenced to ground or common return in shunt regulator topologies |
| Cathode | Current exit terminal in forward bias; higher-potential terminal in Zener breakdown | Connected to regulated rail; band-marked end must face voltage source in clamp/regulator applications |
Key Features
| Feature | Design Value |
|---|---|
| Sharp breakdown knee | Enables precise voltage clamping with minimal current variation across regulation range |
| Low leakage current | 0.05 µA at 12.1 V ensures minimal error contribution in high-impedance feedback networks |
| SOD523 footprint | 0.002 g weight and 0.85 mm × 1.25 mm outline support dense layout in portable and wearables |
| Lead-free & halogen-free | Complies with RoHS 2 and JEDEC J-STD-020D Level 1; suitable for consumer and industrial reflow |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 16 V reference for ADC biasing or op-amp comparator thresholds in battery-powered sensors. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining fixed potential despite input ripple or load variation. Use Value: Tight 5% voltage tolerance and low tempco enable <±1% total reference error over –40°C to +85°C. |
Use Scenario: Protecting microcontroller GPIO pins from ESD-induced transients exceeding 12 V. IC Role / Device Role / Timing Role: Fast-acting crowbar element diverting surge current before damage occurs. Use Value: Sub-10 ns response time and 0.05 µA leakage preserve signal integrity during normal operation. |
| DC Bias Generator | Signal-Level Limiter |
Use Scenario: Setting quiescent operating point for RF amplifier stages in 5G front-end modules. IC Role / Device Role / Timing Role: Passive DC offset generator establishing optimal transistor VGS or VBE. Use Value: 150 mW rating supports continuous biasing without thermal runaway in 2.5 mm² layouts. |
Use Scenario: Limiting audio line-level signals to prevent clipping in headphone driver inputs. IC Role / Device Role / Timing Role: Symmetric clamping device limiting peak swing to ±16 V. Use Value: 0.9 V forward drop allows bidirectional clamping with minimal distortion below threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C16-7-F | Same 16 V nominal, but 200 mW rating and SOD-323 package (larger footprint) | Higher power margin suits intermittent surge clamping; less suitable for ultra-dense layouts | Select when thermal headroom >50 mW is required and board space permits 1.7 mm × 1.3 mm footprint |
| MMSZ4687T1G | 16 V nominal, 500 mW rating, SOD-123 package, higher leakage (1 µA @ 12 V) | Supports higher continuous current but introduces greater reference error in precision bias networks | Prefer for robust overvoltage protection where leakage-induced offset is non-critical |
Compared with BZX584C16-7-F and MMSZ4687T1G, DDZ9703T-7 offers the smallest footprint and lowest leakage among 16 V Zeners, making it optimal for miniaturized, low-power reference and clamping where board area and quiescent current are constrained.
Availability
DDZ9703T-7 is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, and DC bias generation requiring stable component supply in portable instrumentation, IoT sensor nodes, and automotive body electronics.
Supply support for DDZ9703T-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.
This device belongs to the DDZ9689T–DDZ9717T Zener diode series, engineered for high-accuracy, low-leakage voltage regulation in space-sensitive applications where reliability and RoHS compliance are mandatory.
FAQ
What is the maximum continuous Zener current for DDZ9703T-7 at 25°C?
The device is rated for 50 mA test current (IZT), but maximum continuous current is limited by power dissipation: at 25°C ambient, 150 mW / 16 V ≈ 9.4 mA. Derating applies above 25°C per Fig. 1's 1.8 mW/°C slope.
Does DDZ9703T-7 have a specified Zener impedance?
Yes - typical dynamic impedance is 40 Ω at IZ = 5 mA (Fig. 12), confirming low AC impedance for noise-sensitive reference applications. This value increases at lower currents and decreases slightly at higher currents within rated limits.
Can DDZ9703T-7 be used in bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation. For bidirectional ESD protection, use dedicated TVS arrays like D24Z5.1LQ-7 or dual-Zener configurations with series back-to-back devices.
Is the SOD523 package compatible with standard reflow profiles?
Yes - the device meets JEDEC J-STD-020D Level 1 moisture sensitivity and is qualified for Pb-free reflow up to 260°C peak temperature. Recommended profile follows IPC/JEDEC J-STD-020, with ramp rates ≤3°C/s and time above 217°C ≤60 seconds.
DDZ9703T-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):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 150 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12.1 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-523
DDZ9703T-7 FAQ
1.How can I place an order for DDZ9703T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9703T-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 DDZ9703T-7 reliable?
The price and inventory of DDZ9703T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9703T-7 is usually 5 days.
3.What payment methods are accepted for DDZ9703T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9703T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9703T-7?
DDZ9703T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9703T-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 DDZ9703T-7?
For technical support, including DDZ9703T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9703T-7 requirements.
6.How does Aetrix verify that DDZ9703T-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9703T-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 DDZ9703T-7 meets industry standards.
7.What is the process for return or replacement of DDZ9703T-7?
All DDZ9703T-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9703T-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 DDZ9703T-7 part is unused and in its original packaging.
Return procedure for DDZ9703T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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