My Inquiry
My Account
Diodes Incorporated DDZ9708-7
- Part No.:
- DDZ9708-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ9708-7.pdf
- Description:
- DIODE ZENER 22V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,626
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DDZ9708-7 from Diodes Incorporated is a surface-mount low-current Zener diode with a nominal zener voltage of 22 V (min 20.9 V, max 23.1 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 analog monitoring circuits.
For engineers reviewing the DDZ9708-7 datasheet, DDZ9708-7 pinout, DDZ9708-7 application, or DDZ9708-7 equivalent, key selection considerations include its 22 V nominal zener voltage, ±5% tolerance, 0.05 µA maximum reverse leakage at 16.7 V, temperature coefficient of +0.07 %/°C, and suitability for battery-powered sensor signal conditioning and portable power rail stabilization.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage regulation under low-bias conditions. Its 50 µA test current enables accurate characterization in ultra-low-power circuits where traditional 5 mA or 20 mA Zeners would draw excessive current.
The device exhibits a positive temperature coefficient (+0.07 %/°C) near 22 V, indicating predictable voltage drift with ambient temperature changes-critical for reference stability in industrial sensor front-ends and automotive body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 22 V - Stable regulation point for 24 V system monitoring and 3.3 V LDO feedback referencing. |
| Zener Voltage Range | 20.9 V to 23.1 V - ±5% tolerance ensures predictable clamping across production lots. |
| Test Current | 50 µA - Enables use in microamp-level bias networks without loading error. |
| Max Reverse Leakage | 0.05 µA at 16.7 V - Minimal standby current drain in always-on battery circuits. |
| Power Dissipation | 500 mW on FR-4 at TL = +75°C - Supports moderate transient energy absorption in compact layouts. |
| Thermal Resistance θJA | 340 °C/W - Requires minimal copper area for thermal management in space-constrained designs. |
| Package | SOD123 - Standardized 2-pin surface-mount footprint compatible with automated pick-and-place. |
Pinout & Package
DDZ9708-7 uses the SOD123 plastic molded package with cathode band marking. The device has two terminals: anode and cathode, with polarity indicated by a visible band on the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit ground or lower-potential rail when used in shunt regulation. |
| Cathode | Reverse breakdown terminal / Zener output node | Connected to regulated voltage node; marked with band for polarity identification during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - eliminates need for high-current bias resistors in IoT sensor nodes. |
| Automated assembly compatibility | SOD123 footprint with matte tin annealed terminals - ensures reliable solder wetting and reflow yield. |
| Green compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets IPC-1752A environmental reporting requirements. |
| Thermal performance | RθJL = 150 °C/W - enables direct heat transfer to PCB copper, reducing junction temperature rise under load. |
Applications
| Industrial Sensor Signal Conditioning | Portable Medical Device Power Monitoring |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADCs measuring thermistor or strain gauge outputs in factory-floor sensors. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 22 V reference for op-amp gain-setting and ADC input scaling. Use Value: 50 µA test current avoids loading the high-impedance sensor bridge, preserving measurement accuracy. |
Use Scenario: Monitoring Li-ion battery pack voltage in handheld pulse oximeters with ultra-low standby power budget. IC Role / Device Role / Timing Role: Overvoltage clamp protecting MCU GPIO and analog front-end from transient surges during charging cycles. Use Value: 0.05 µA leakage at 16.7 V minimizes self-discharge during multi-week standby periods. |
| Automotive Body Control Module (BCM) Input Protection | Smart Home Energy Meter Reference Calibration |
|
Use Scenario: Clamping CAN transceiver supply rails against load-dump spikes in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VCC and ground to limit rail excursion during ISO 7637-2 pulses. Use Value: 500 mW rating allows brief energy absorption without thermal runaway in confined BCM enclosures. |
Use Scenario: Providing traceable voltage reference for self-calibration routines in Class 0.5 electricity meters. IC Role / Device Role / Timing Role: Precision shunt reference in resistor-divider network feeding metrology ADC reference input. Use Value: ±5% zener voltage tolerance and +0.07 %/°C TC enable stable calibration across -40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C22LT1G | Same 22 V nominal, but rated at 300 mW and specified at 5 mA test current. | Higher leakage (1 µA at 17.6 V) and higher bias current requirement limits use in sub-µA systems. | Select when higher surge power handling is needed and bias current >5 mA is available. |
| MMSZ4693T1G | 22.1 V nominal, 500 mW rating, but specified at 1 mA test current and exhibits higher impedance above 10 mA. | Less stable regulation at ultra-low currents; not optimized for 50 µA operation. | Select only if existing design already uses 1 mA bias and board layout accommodates slightly larger SOD-123 variant. |
Compared with BZX84-C22LT1G and MMSZ4693T1G, DDZ9708-7 delivers superior low-current regulation fidelity and lower leakage-making it the preferred choice for battery-critical, high-precision reference applications where bias current is constrained to ≤100 µA.
Availability
DDZ9708-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable medical device power monitoring, and automotive body control module input protection requiring stable component supply and long-term lifecycle support.
Supply support for DDZ9708-7 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.
DDZ9708-7 belongs to the DDZ9678–DDZ9717 series of low-current Zener diodes designed specifically for precision voltage referencing in space- and power-constrained applications.
FAQ
What is the maximum reverse voltage that can be continuously applied to DDZ9708-7 without breakdown?
The maximum continuous reverse voltage before breakdown is defined by the zener voltage specification: 22 V nominal, with a guaranteed range of 20.9 V to 23.1 V at 50 µA test current. Applying reverse voltage below 20.9 V ensures no significant conduction; operation above 23.1 V risks uncontrolled current increase and thermal damage unless current-limited.
Can DDZ9708-7 be used in place of a standard 22 V Zener diode rated at 5 mA test current?
No-DDZ9708-7 is characterized at 50 µA, not 5 mA. Its zener impedance and voltage regulation curve differ significantly at higher currents. Substituting it into a 5 mA bias circuit will result in elevated voltage (≈22.8 V) and poor regulation due to increased dynamic impedance. Recalculate bias resistors for 50 µA operation.
Is DDZ9708-7 qualified for automotive applications?
DDZ9708-7 is the standard-grade part. The automotive-qualified version is DDZ9708Q-7, which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. DDZ9708-7 lacks automotive change control documentation and should not be used in safety-critical vehicle systems.
What is the typical zener impedance of DDZ9708-7 at 50 µA?
Based on Figure 14 in DS30410 Rev. 17-2, the typical zener impedance for DDZ9708-7 (22 V type) at 50 µA is approximately 120 Ω. This value increases significantly at lower currents and decreases modestly at higher currents up to 1 mA, reflecting its optimized low-current regulation behavior.
DDZ9708-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.7 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
DDZ9708-7 FAQ
1.How can I place an order for DDZ9708-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ9708-7 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 DDZ9708-7 reliable?
The price and inventory of DDZ9708-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ9708-7 is usually 5 days.
3.What payment methods are accepted for DDZ9708-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ9708-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ9708-7?
DDZ9708-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ9708-7 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 DDZ9708-7?
For technical support, including DDZ9708-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ9708-7 requirements.
6.How does Aetrix verify that DDZ9708-7 is sourced from the original manufacturer or authorized distributors?
All DDZ9708-7 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 DDZ9708-7 meets industry standards.
7.What is the process for return or replacement of DDZ9708-7?
All DDZ9708-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ9708-7, 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 DDZ9708-7 part is unused and in its original packaging.
Return procedure for DDZ9708-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ9708-7 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…
