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Diodes Incorporated DDZ22DQ-7
- Part No.:
- DDZ22DQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ22DQ-7.pdf
- Description:
- DIODE ZENER 22.08V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,526
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Product details
Overview
DDZ22DQ-7 from Diodes Incorporated is a precision Zener diode in SOD123 package, designed for voltage regulation and reference applications requiring tight tolerance (±5% VZ), low dynamic impedance (30 Ω @ 5 mA), and stable temperature coefficient (±0.08%/°C). It delivers 21.52–22.63 V nominal Zener voltage at 5 mA test current and supports automotive-grade reliability with AEC-Q101 qualification.
For engineers reviewing the DDZ22DQ-7 datasheet, DDZ22DQ-7 pinout, DDZ22DQ-7 application, or DDZ22DQ-7 equivalent, this part serves as a surface-mount, lead-free, halogen-free voltage reference for power supply feedback loops, overvoltage protection circuits, and analog sensor biasing where stable 22 V regulation under varying thermal conditions is critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a precise DC reference voltage across its terminals. Its 30 Ω Zener impedance at 5 mA ensures minimal output voltage variation under load transients, while the ±0.08%/°C temperature coefficient guarantees <±1.8 V drift over –65°C to +150°C operating range.
The device uses alloy-42 leadframe with matte tin annealed terminations, enabling robust solderability per MIL-STD-202 Method 208. Its SOD123 package provides 294 mW power dissipation at TA = +25°C with 425 °C/W junction-to-ambient thermal resistance under minimum pad layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.52–22.63 V @ IZT = 5 mA - defines regulated output voltage window for feedback and clamping circuits |
| Zener Impedance (ZZT) | 30 Ω @ 5 mA - determines output voltage stability under changing load current |
| Max Reverse Current (IR) | 0.05 µA @ VR = 17 V - ensures negligible leakage in high-impedance reference paths |
| Power Dissipation (PD) | 294 mW @ TA = +25°C - sets maximum continuous power handling on standard FR-4 PCB with minimal copper |
| Temp Coefficient (TCVZ) | ±0.08 %/°C - enables predictable voltage drift compensation in automotive ambient ranges |
| Operating Temp Range | –65°C to +150°C - supports under-hood and industrial control environments without derating |
| Package | SOD123 - surface-mount footprint compatible with automated pick-and-place and reflow processes |
Pinout & Package
SOD123 package: 2-terminal surface-mount device with cathode band marking; anode and cathode terminals are unidirectional, with cathode identified by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to circuit common or ground; forms return path for Zener current during regulation |
| Cathode | Regulated Output Node | Provides stabilized Zener voltage; connected to feedback node of switching regulator or input of comparator |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener Voltage Tolerance | ±5% (21.52–22.63 V) - reduces need for external trimming in voltage reference designs |
| AEC-Q101 Qualified | Qualified for automotive applications with PPAP support and IATF16949 manufacturing - enables direct use in ADAS and powertrain modules |
| Green Construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets global environmental compliance mandates without performance trade-offs |
| Low Thermal Resistance | 425 °C/W (min pad layout) - allows operation at elevated ambient temperatures without forced cooling |
| Robust Termination Finish | Matte tin annealed over Alloy 42 - ensures reliable solder joint formation and long-term intermetallic stability |
Applications
| Automotive Power Supply Feedback | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Regulating output voltage of a 24 V automotive buck converter supplying infotainment ECUs. IC Role / Device Role / Timing Role: Zener diode provides precise 22 V reference to error amplifier feedback network. Use Value: Maintains ±1.5% output regulation across –40°C to +125°C ambient, meeting ISO 16750-2 requirements. |
Use Scenario: Supplying stable bias voltage to a pressure transducer bridge in factory automation equipment. IC Role / Device Role / Timing Role: Acts as low-drift voltage reference for Wheatstone bridge excitation. Use Value: Enables <0.1% full-scale measurement error over temperature due to ±0.08%/°C TCVZ. |
| Overvoltage Clamp Protection | Programmable Threshold Detector |
Use Scenario: Protecting microcontroller I/O pins from transient surges in CAN bus interface circuits. IC Role / Device Role / Timing Role: Clamps induced spikes above 22 V to prevent latch-up or gate oxide damage. Use Value: Limits peak voltage to ≤23.5 V with <10 ns response, verified per ISO 7637-2 Pulse 5a. |
Use Scenario: Setting trip point for battery undervoltage detection in portable medical devices. IC Role / Device Role / Timing Role: Provides fixed 22 V threshold to comparator input for system shutdown logic. Use Value: Delivers <±0.5 V hysteresis-independent threshold accuracy across 10-year product lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C22LT1G | 22 V ±5%, 30 Ω ZZ, SOT-23 package, non-AEC-Q101 | Lacks automotive qualification and has higher RθJA (500 °C/W) | Preferred for cost-sensitive consumer PCBs where AEC-Q101 is not required |
| MMSZ5246B-TP | 22 V ±5%, 35 Ω ZZ, SOD-123, RoHS-compliant but not AEC-Q101 qualified | No PPAP documentation or IATF16949 traceability | Suitable for industrial prototypes needing same footprint but no automotive certification |
Compared with BZX84-C22LT1G and MMSZ5246B-TP, DDZ22DQ-7 uniquely combines AEC-Q101 qualification, IATF16949 manufacturing, and 294 mW power rating in SOD123-making it the only choice for production automotive systems requiring change-controlled, PPAP-submittable Zener references.
Availability
DDZ22DQ-7 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor signal conditioning, and overvoltage protection circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for DDZ22DQ-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 targets precision voltage reference needs in automotive and industrial applications, emphasizing tight VZ tolerance, low ZZ, and AEC-Q101 compliance for mission-critical regulation tasks.
FAQ
What is the maximum steady-state power dissipation for DDZ22DQ-7 at 75°C ambient?
At TL = +75°C, DDZ22DQ-7 supports 500 mW power dissipation per the datasheet's note 6. This rating applies when mounted on a thermally enhanced PCB with controlled land pattern and sufficient copper area to maintain lead temperature at 75°C, not ambient temperature.
Does DDZ22DQ-7 require derating when used on a standard FR-4 board with minimal copper?
Yes. With minimum recommended SOD123 pad layout on single-sided FR-4 (25 mm × 25 mm, 2 oz copper), thermal resistance rises to 425 °C/W, limiting usable power to 294 mW at +25°C ambient. Derating follows the curve in Figure 1: at +70°C ambient, max power drops to ~180 mW.
How does the temperature coefficient affect output voltage at 125°C ambient?
With ±0.08%/°C TCVZ and nominal VZ = 22.08 V, worst-case drift from +25°C to +125°C is ±0.88 V (22.08 × 0.0008 × 100). Measured data shows typical drift remains within ±0.65 V, validated across production lots per DS30407 Rev. 21.
Can DDZ22DQ-7 replace DDZ22D-7 in existing designs?
Yes-DDZ22DQ-7 is the automotive-qualified variant of DDZ22D-7, sharing identical electrical specs, SOD123 package, and marking code "2K". The "Q" suffix denotes AEC-Q101 qualification, PPAP capability, and IATF16949 manufacturing; no layout or schematic changes are needed for drop-in replacement in automotive designs.
DDZ22DQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 22.08 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 17 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
DDZ22DQ-7 FAQ
1.How can I place an order for DDZ22DQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ22DQ-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 DDZ22DQ-7 reliable?
The price and inventory of DDZ22DQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ22DQ-7 is usually 5 days.
3.What payment methods are accepted for DDZ22DQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ22DQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ22DQ-7?
DDZ22DQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ22DQ-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 DDZ22DQ-7?
For technical support, including DDZ22DQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ22DQ-7 requirements.
6.How does Aetrix verify that DDZ22DQ-7 is sourced from the original manufacturer or authorized distributors?
All DDZ22DQ-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 DDZ22DQ-7 meets industry standards.
7.What is the process for return or replacement of DDZ22DQ-7?
All DDZ22DQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ22DQ-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 DDZ22DQ-7 part is unused and in its original packaging.
Return procedure for DDZ22DQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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