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Diodes Incorporated DDZ9691-7
- Part No.:
- DDZ9691-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9691-7.pdf
- Description:
- DIODE ZENER 6.2V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:69,071
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Product details
Overview
DDZ9691-7 from Diodes Incorporated is a surface-mount low-current Zener diode with nominal zener voltage 6.2 V (min 5.89 V, max 6.51 V), rated for 500 mW power dissipation on FR-4 PCB at TL = +75°C, specified at low test current of 50 µA, and housed in SOD123 package. It serves as a precision voltage reference or overvoltage clamp in portable battery-powered sensor circuits and low-power microcontroller reset supervision.
For engineers reviewing the DDZ9691-7 datasheet, DDZ9691-7 pinout, DDZ9691-7 application, or DDZ9691-7 equivalent, key selection criteria include its 6.2 V zener tolerance (±5%), 1 µA reverse leakage at VR = 5 V, 150 °C/W junction-to-lead thermal resistance, and suitability for automated SMT assembly in space-constrained consumer and industrial electronics.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation under low-bias conditions. Its 50 µA test current enables accurate characterization in ultra-low-power systems where quiescent current must remain below 10 µA.
The device exhibits a temperature coefficient of approximately +0.04 %/°C near 6.2 V, enabling predictable drift behavior across –65°C to +150°C operating range. Its SOD123 package provides defined thermal path via leadframe, supporting reliable power derating per MIL-STD-202 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 6.2 V - Stable regulation point for 5 V logic rail monitoring or MCU brown-out detection |
| Zener Voltage Range | 5.89 V to 6.51 V - ±5% tolerance ensures compatibility with 5.5–6.5 V supply margin requirements |
| Test Current (IZT) | 50 µA - Enables use in micropower circuits without loading sensitive bias networks |
| Max Reverse Leakage (IR) | 1 µA @ VR = 5 V - Minimizes standby current in battery-backed real-time clock circuits |
| Power Dissipation | 500 mW @ TL = +75°C - Supports continuous operation on standard FR-4 with 1-inch² copper pad |
| Thermal Resistance (Junction-to-Lead) | 150 °C/W - Enables thermal design predictability when mounted on PCB with defined copper pour |
| Operating Temperature | –65°C to +150°C - Validated for extended-range industrial and automotive under-hood environments |
Pinout & Package
Package: SOD123 - Surface-mount plastic case with cathode band marking; dimensions: L = 0.30 mm (typ), D = 1.55 mm (typ), E = 2.65 mm (typ); weight ≈ 0.01 g; UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during reverse-bias regulation; forms low-impedance path to ground when clamping |
| Cathode | Zener breakdown terminal | Connected to regulated voltage node; marked by visible band; carries controlled reverse current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - eliminates need for high-current bias resistors in coin-cell-powered devices |
| Automated assembly compatibility | SOD123 footprint - supports high-yield pick-and-place with standard vision alignment and reflow profiles |
| Lead-free & green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets IPC-J-STD-609 Class 3 material requirements |
| Thermal performance validation | RθJL = 150 °C/W - enables accurate junction temperature estimation using lead temperature measurements |
Applications
| Microcontroller Reset Supervision | Battery Voltage Monitoring |
|---|---|
Use Scenario: Detecting undervoltage condition on 3.3 V or 5 V MCU supply rails to trigger hardware reset before logic corruption occurs. IC Role / Device Role / Timing Role: Zener diode configured as threshold comparator input to supervisor IC or analog input of ADC. Use Value: 6.2 V nominal rating allows precise setting of 5.5 V trip point using resistor divider, with ±5% tolerance ensuring deterministic reset timing across temperature. | Use Scenario: Monitoring lithium coin cell (3 V) or alkaline stack (4.5–6 V) voltage in wireless sensor nodes to initiate low-power sleep mode before depletion. IC Role / Device Role / Timing Role: Reference element in resistive divider feeding ADC or comparator input; operates continuously at <1 µA leakage. Use Value: 50 µA test current enables accurate calibration at system-level current budgets below 10 µA, extending battery life beyond 5 years in typical deployments. |
| Low-Power Analog Reference | ESD-Sensitive Signal Clamping |
Use Scenario: Providing stable 6.2 V reference for op-amp biasing or DAC output scaling in portable medical sensors with strict power constraints. IC Role / Device Role / Timing Role: Shunt reference connected between supply and ground, delivering stable voltage despite load variations up to 1 mA. Use Value: Low dynamic impedance (~120 Ω at 50 µA, per Fig. 11) ensures minimal output deviation under varying load, critical for 12-bit ADC accuracy. | Use Scenario: Protecting I²C or UART lines in handheld IoT devices from transient overvoltage events while minimizing signal distortion. IC Role / Device Role / Timing Role: Low-capacitance (≈25 pF at 0 V, per Fig. 10) shunt clamp placed between signal line and ground. Use Value: 1 µA leakage at 5 V ensures negligible DC loading on 10 kΩ pull-up networks, preserving bus timing integrity and noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C6V2 (Nexperia) | Same 6.2 V nominal, ±5% tolerance, but rated for 300 mW only and uses SOD323 package | Limited power handling reduces thermal margin on dense PCBs; smaller SOD323 footprint may complicate rework | Select only if board space is constrained and peak power remains below 200 mW |
| MMSZ4687 (ON Semiconductor) | 6.2 V nominal, ±5%, 500 mW rating, but specified at 20 mA test current and higher leakage (5 µA @ 5 V) | Higher test current increases bias network power loss; elevated leakage degrades battery life in always-on sensing | Prefer only when legacy designs require identical 20 mA test point matching |
Compared with BZX584-C6V2 and MMSZ4687, DDZ9691-7 uniquely combines 500 mW rating, 50 µA test current, and 1 µA leakage at 5 V-making it optimal for thermally demanding, battery-critical applications where both stability and micropower operation are required.
Availability
DDZ9691-7 is available at Aetrix Electronics and suitable for microcontroller reset supervision, battery voltage monitoring, low-power analog reference, and ESD-sensitive signal clamping requiring stable component supply across production lifecycles.
Supply support for DDZ9691-7 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 DDZ series belongs to Diodes' precision low-current Zener portfolio, engineered specifically for voltage reference and regulation in battery-powered, space-constrained, and thermally sensitive applications.
FAQ
What is the maximum allowable power dissipation for DDZ9691-7 at ambient temperature?
DDZ9691-7 is rated for 500 mW power dissipation only when mounted on FR-4 PCB with minimum recommended pad layout at lead temperature TL = +75°C. At TA = +25°C with no forced airflow, derating begins above +75°C ambient per Fig. 1 curve, reaching ~300 mW at TA = +100°C. Thermal design must account for RθJA = 340 °C/W.
Does DDZ9691-7 have automotive qualification?
No-DDZ9691-7 is the standard industrial-grade variant. The automotive-qualified version is DDZ9691Q-7, which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. Only the "Q" suffix denotes automotive compliance.
How is the cathode identified on the SOD123 package?
The cathode is marked by a visible band printed on the body end of the SOD123 package. Per mechanical data, this band aligns with the cathode terminal, and the anode is the unmarked end. Polarity must be verified during placement to avoid reverse-bias failure in regulation circuits.
What is the typical zener impedance at 50 µA for DDZ9691-7?
Based on Fig. 11 (DDZ9681–DDZ9692), the typical zener impedance for 6.2 V devices like DDZ9691 is approximately 120 Ω at 50 µA test current and TJ = +25°C. This value increases at lower currents and decreases slightly at higher currents, directly affecting regulation accuracy under load variation.
DDZ9691-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 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
DDZ9691-7 FAQ
1.How can I place an order for DDZ9691-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9691-7 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 DDZ9691-7 reliable?
The price and inventory of DDZ9691-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9691-7 is usually 5 days.
3.What payment methods are accepted for DDZ9691-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9691-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9691-7?
DDZ9691-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9691-7 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 DDZ9691-7?
For technical support, including DDZ9691-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9691-7 requirements.
6.How does Aetrix verify that DDZ9691-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9691-7 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 DDZ9691-7 meets industry standards.
7.What is the process for return or replacement of DDZ9691-7?
All DDZ9691-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9691-7, 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 DDZ9691-7 part is unused and in its original packaging.
Return procedure for DDZ9691-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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