My Inquiry
My Account
Diodes Incorporated DDZ9712Q-7
- Part No.:
- DDZ9712Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9712Q-7.pdf
- Description:
- DIODE ZENER 28V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,043
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DDZ9712Q-7 from Diodes Incorporated is a surface-mount, low-current Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C on FR-4 PCB, with nominal zener voltage of 28 V (min 26.6 V, max 29.4 V) at IZT = 50 µA, and reverse leakage current ≤0.05 µA at VR = 21.2 V. It serves as a precision voltage reference or overvoltage clamp in battery-powered sensor nodes and automotive body control modules.
For engineers reviewing the DDZ9712Q-7 datasheet, DDZ9712Q-7 pinout, DDZ9712Q-7 application, or DDZ9712Q-7 equivalent, this part is selected for low-bias, high-stability voltage regulation where thermal drift, leakage, and AEC-Q101 qualification are critical - especially in automotive infotainment power rails and industrial IoT edge sensors requiring long-term calibration stability.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage tolerance (±3.5% at 28 V), specified at ultra-low test current (50 µA), minimizing quiescent power draw. Its temperature coefficient is +0.08 %/°C (typical), optimized for stable regulation across –65°C to +150°C operating range.
The device uses alloy 42 leadframe with matte tin annealed terminals, solderable per MIL-STD-202 Method 208, and features cathode band polarity marking. It is qualified to AEC-Q101, manufactured in IATF 16949-certified facilities, and rated for moisture sensitivity level 1 (J-STD-020).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 28 V - precise regulation point at 50 µA test current, ±3.5% tolerance ensures predictable clamping in low-power bias networks. |
| Power Dissipation | 500 mW - maximum steady-state power on FR-4 PCB with 1-inch² pad at TL = +75°C; derates linearly above 75°C ambient. |
| Reverse Leakage | ≤0.05 µA @ 21.2 V - enables microamp-level standby current in always-on circuits without compromising regulation accuracy. |
| Thermal Resistance (J–L) | 150 °C/W - low junction-to-lead resistance supports reliable operation under transient thermal loads in compact automotive PCB layouts. |
| Operating Temp Range | –65°C to +150°C - validated for under-hood and engine-control applications meeting AEC-Q101 stress requirements. |
| Package | SOD123 - industry-standard 2-pin surface-mount outline (1.55 mm × 2.65 mm × 1.05 mm), compatible with automated pick-and-place and reflow. |
Pinout & Package
DDZ9712Q-7 is housed in a 2-terminal SOD123 plastic package with cathode band marking. The case is molded UL 94V-0 plastic; terminals are matte tin annealed over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to system ground or lower-potential rail; forms reference return path during reverse-bias regulation. |
| Cathode | Zener breakdown terminal / regulated output node | Connected to voltage source or signal line being clamped; delivers stable 28 V reference when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use with PPAP capability and change control - required for body electronics and ADAS power management. |
| Low test current (50 µA) | Enables direct integration into micropower sensor biasing circuits without loading the source, ideal for coin-cell or energy-harvesting systems. |
| Halogen- and antimony-free "Green" construction | Meets <900 ppm Br, <900 ppm Cl (<1500 ppm total Br+Cl), <1000 ppm Sb - compliant with global environmental directives including RoHS 3. |
| Moisture Sensitivity Level 1 | No floor life limitation or baking requirement before assembly - simplifies manufacturing logistics and reduces handling overhead. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 28 V supply rail for LIN transceivers and door module microcontrollers in harsh under-dash environments. IC Role / Device Role / Timing Role: Precision voltage clamp and reference generator for analog front-end ICs and LDO input stabilization. Use Value: Maintains ±3.5% regulation over –40°C to +125°C ambient, reducing need for trimming resistors and improving long-term calibration stability. |
Use Scenario: Providing stable 28 V reference for 4–20 mA loop-powered pressure transmitters in oil & gas field instrumentation. IC Role / Device Role / Timing Role: Low-leakage shunt regulator enabling sub-1 µA standby current while maintaining 28 V compliance during loop fault conditions. Use Value: Reverse leakage ≤0.05 µA prevents error accumulation in high-impedance feedback paths, preserving 16-bit ADC accuracy. |
| Portable Medical Diagnostic Sensor | Smart Building Occupancy Detector |
Use Scenario: Biasing photodiode amplifier stages in handheld pulse oximeters powered by single Li-ion cells. IC Role / Device Role / Timing Role: Low-current Zener reference for op-amp offset nulling and gain-setting networks. Use Value: 50 µA test current matches typical photodiode dark current levels, eliminating additional bias current sources and saving board space. |
Use Scenario: Clamping surge-induced transients on 24 V DC power inputs of PIR-based occupancy sensors deployed in HVAC ducts. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting MCU power pins during ESD events and inductive load switching. Use Value: Fast response to overvoltage (ns-scale breakdown) combined with 500 mW peak power rating absorbs 100 ns/1 kV pulses without degradation. |
Availability
DDZ9712Q-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, portable medical diagnostics, and smart building controls requiring stable component supply with AEC-Q101 traceability and long-lifecycle support.
Supply support for DDZ9712Q-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 automotive, industrial, and consumer markets.
The DDZ9xxxQ series belongs to Diodes' AEC-Q101-qualified Zener diode product line, engineered specifically for low-power, high-stability voltage reference and clamping in automotive ECUs and safety-critical subsystems.
FAQ
What is the maximum reverse voltage (VR) at which DDZ9712Q-7 guarantees ≤0.05 µA leakage?
DDZ9712Q-7 guarantees reverse leakage current ≤0.05 µA at VR = 21.2 V, as specified in the Electrical Characteristics table. This value corresponds to 75.7% of its nominal zener voltage (28 V), ensuring robust margin against unintended conduction in bias networks operating near but below breakdown.
Is DDZ9712Q-7 compatible with lead-free reflow profiles?
Yes - DDZ9712Q-7 uses matte tin annealed terminals over Alloy 42 leadframe and is rated for standard lead-free reflow (JEDEC J-STD-020). Its moisture sensitivity level is 1, so no pre-bake is required prior to assembly, supporting high-yield, high-throughput SMT processes.
How does the temperature coefficient of DDZ9712Q-7 compare to lower-voltage Zeners in the same family?
DDZ9712Q-7 exhibits a typical temperature coefficient of +0.08 %/°C (Fig. 19), consistent with other 27–30 V parts in the DDZ97xx series. This is higher than 5–12 V Zeners (e.g., DDZ9690: +0.02 %/°C) but remains within designable limits for applications where 28 V regulation dominates thermal drift budget.
Can DDZ9712Q-7 be used as a substitute for a 27 V Zener like DDZ9711Q-7?
No - DDZ9712Q-7 has a nominal zener voltage of 28 V (26.6–29.4 V range), while DDZ9711Q-7 is 27 V (25.65–28.35 V). Their 1 V difference affects regulation accuracy and thermal drift behavior; substitution requires circuit-level validation of voltage margin, power dissipation, and leakage impact on downstream biasing.
DDZ9712Q-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):
- 28 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ9712Q-7 FAQ
1.How can I place an order for DDZ9712Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9712Q-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 DDZ9712Q-7 reliable?
The price and inventory of DDZ9712Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9712Q-7 is usually 5 days.
3.What payment methods are accepted for DDZ9712Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9712Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9712Q-7?
DDZ9712Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9712Q-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 DDZ9712Q-7?
For technical support, including DDZ9712Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9712Q-7 requirements.
6.How does Aetrix verify that DDZ9712Q-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9712Q-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 DDZ9712Q-7 meets industry standards.
7.What is the process for return or replacement of DDZ9712Q-7?
All DDZ9712Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9712Q-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 DDZ9712Q-7 part is unused and in its original packaging.
Return procedure for DDZ9712Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ9712Q-7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
