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Diodes Incorporated DDZ9682-7
- Part No.:
- DDZ9682-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9682-7.pdf
- Description:
- DIODE ZENER 2.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,163
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Product details
Overview
DDZ9682-7 from Diodes Incorporated is a surface-mount low-current Zener diode with nominal zener voltage 2.7 V (min 2.565 V, max 2.835 V), rated for 500 mW power dissipation on FR-4 PCB at TL = +75°C, specified at low test current of 50 µA, and packaged in SOD123. 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 DDZ9682-7 datasheet, DDZ9682-7 pinout, DDZ9682-7 application, or DDZ9682-7 equivalent, key selection criteria include its 2.7 V nominal zener voltage tolerance (±5%), ultra-low reverse leakage (≤1 µA @ VR = 1 V), SOD123 package thermal resistance (RθJA = 340 °C/W), and suitability for automated assembly in space-constrained consumer and industrial IoT nodes.
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 micropower systems where quiescent current must remain below 100 µA.
The device exhibits a negative temperature coefficient near 2.7 V (≈ –0.05 %/°C per Fig. 17), requiring thermal-aware layout in precision references. Its SOD123 package delivers 0.01 g mass and UL 94V-0 flammability rating, supporting high-density PCB designs with IPC-compliant reflow profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 2.7 V - Stable regulation point for 2.8 V rail monitoring or 3.3 V LDO feedback |
| Zener Voltage Tolerance | ±5% (2.565–2.835 V) - Enables tight threshold setting without external trimming |
| Test Current (IZT) | 50 µA - Matches typical bias currents in CMOS reset ICs and low-power comparators |
| Max Reverse Leakage (IR) | 1 µA @ VR = 1 V - Ensures <100 nA system standby current contribution in battery-critical apps |
| Power Dissipation (PD) | 500 mW - Supports transient clamping up to 185 mA at 2.7 V without derating below +75°C board temp |
| Thermal Resistance (RθJA) | 340 °C/W - Requires ≥10 mm² copper pour for full-rated power in compact layouts |
| Package | SOD123 - Compatible with 0805 footprint; cathode band marks terminal polarity |
Pinout & Package
SOD123 surface-mount package with two terminals: anode and cathode. Cathode identified by molded band; terminals are matte tin-annealed over Alloy 42 leadframe, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system GND or low-impedance return path; defines voltage reference baseline |
| Cathode | Zener output / regulated node | Provides stable 2.7 V when reverse-biased; connects to IC reference input or comparator inverting input |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | 50 µA IZT enables use in sub-100 µA bias networks without loading error |
| Automated assembly compatibility | SOD123 footprint aligns with standard 0805 pick-and-place tooling and reflow profiles |
| Green material compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); RoHS 3 compliant |
| Thermal performance on FR-4 | 340 °C/W RθJA allows 500 mW operation with ≤75°C local board temperature |
Applications
| Portable Sensor Node Power Supervision | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Monitoring coin-cell voltage (2.0–3.0 V range) in BLE temperature sensors to trigger low-battery alert before cutoff. IC Role / Device Role / Timing Role: Zener acts as analog voltage comparator threshold element feeding into GPIO or ADC input. Use Value: ±5% VZ tolerance ensures consistent 2.7 V trip point across temperature; 1 µA IR prevents measurable battery drain during 10-year shelf life. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0+ MCU operating from 3.3 V supply with brown-out detection. IC Role / Device Role / Timing Role: Provides precise 2.7 V reference to reset IC (e.g., MAX809) or internal BOD circuit. Use Value: Low 50 µA IZT avoids disturbing reset IC's internal bias network; SOD123 size fits within 2 mm² PCB area budget. |
| Low-Power Analog Front-End Reference | USB-C Port Overvoltage Clamp |
Use Scenario: Biasing op-amp input stage in wearable ECG amplifier powered from single 3.0 V Li-ion cell. IC Role / Device Role / Timing Role: Supplies stable 2.7 V common-mode voltage to instrumentation amplifier inputs. Use Value: Negative TC (–0.05 %/°C) partially compensates for op-amp input offset drift; 340 °C/W RθJA supports continuous operation at ambient up to +60°C. |
Use Scenario: Clamping VBUS line against transient surges during USB-C hot-plug events in portable docking stations. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting VBUS to 2.835 V peak during 100 ns transients. Use Value: 500 mW PD rating handles 1 A × 2.7 V = 2.7 W surge for <200 ms; SOD123 thermal mass absorbs short pulses without 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-C2V7LT1G | Same 2.7 V nominal, but ±6% tolerance (2.54–2.86 V); higher IR (2 µA @ 1 V); SOT-23 package | SOT-23 offers better thermal dissipation (RθJA = 300 °C/W) but requires larger footprint and different pick-and-place setup | Select if board layout permits SOT-23 and tighter thermal management is needed |
| MMSZ4677T1G | 2.7 V nominal, ±5% tolerance, but rated at 350 mW PD and 5 mA IZT - higher bias requirement | Higher IZT increases standby current; less suitable for sub-100 µA systems; same SOD123 package | Select only if existing design already uses 5 mA bias and thermal margin exceeds 350 mW |
Compared with BZX84-C2V7LT1G and MMSZ4677T1G, DDZ9682-7 uniquely balances ±5% tolerance, 50 µA test current, and 500 mW rating in SOD123 - making it optimal for battery longevity and space-constrained micropower designs where both accuracy and ultra-low bias matter.
Availability
DDZ9682-7 is available at Aetrix Electronics and suitable for portable sensor nodes, microcontroller reset circuits, low-power analog front-ends, and USB-C port protection requiring stable component supply with guaranteed long-term continuity.
Supply support for DDZ9682-7 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, energy-efficient components for industrial, computing, and consumer markets.
The DDZ96xx series belongs to Diodes' low-current Zener portfolio designed specifically for micropower voltage reference and clamping in battery-operated and space-constrained electronics.
FAQ
What is the maximum allowable reverse voltage before breakdown for DDZ9682-7?
The DDZ9682-7 begins controlled zener breakdown at its nominal 2.7 V, with guaranteed regulation between 2.565 V and 2.835 V at 50 µA. It is not rated for sustained operation above 2.835 V in reverse bias - exceeding this risks unregulated conduction or thermal runaway without current limiting.
Can DDZ9682-7 be used in forward-bias mode like a standard diode?
Yes - its forward voltage is 0.9 V at 10 mA (per DS30410 Rev. 17-2, page 2), making it usable as a low-VF clamp or level shifter. However, its primary design intent and characterization are for reverse-bias zener operation; forward characteristics are secondary and not optimized for switching speed or surge handling.
Does DDZ9682-7 meet automotive qualification requirements?
No - the standard DDZ9682-7 is not AEC-Q101 qualified. Only variants suffixed with "Q" (e.g., DDZ9682Q-7) are automotive-grade, manufactured in IATF 16949 facilities and PPAP-capable. The -7 suffix alone indicates commercial-grade tape-and-reel packaging.
How does ambient temperature affect the zener voltage accuracy of DDZ9682-7?
DDZ9682-7 exhibits a negative temperature coefficient of approximately –0.05 %/°C near 2.7 V (per Fig. 17). From 25°C to 85°C, this results in ~–0.3 V drift (–11% of nominal), so system-level compensation or layout isolation is required for applications demanding better than ±2% regulation across temperature.
DDZ9682-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 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
DDZ9682-7 FAQ
1.How can I place an order for DDZ9682-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9682-7 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 DDZ9682-7 reliable?
The price and inventory of DDZ9682-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9682-7 is usually 5 days.
3.What payment methods are accepted for DDZ9682-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9682-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9682-7?
DDZ9682-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9682-7 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 DDZ9682-7?
For technical support, including DDZ9682-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9682-7 requirements.
6.How does Aetrix verify that DDZ9682-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9682-7 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 DDZ9682-7 meets industry standards.
7.What is the process for return or replacement of DDZ9682-7?
All DDZ9682-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9682-7, 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 DDZ9682-7 part is unused and in its original packaging.
Return procedure for DDZ9682-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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