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Diodes Incorporated DDZ23Q-7
- Part No.:
- DDZ23Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ23Q-7.pdf
- Description:
- DIODE ZENER 23.19V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,256
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Product details
Overview
DDZ23Q-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 22.61–23.77 V at 5 mA test current, ±5% tolerance, 35 Ω dynamic impedance at 5 mA, and 0.05 µA reverse leakage at 19.0 V. It operates in SOD123 package and serves as voltage reference or overvoltage clamp in power supply feedback loops and analog signal conditioning circuits.
For engineers reviewing the DDZ23Q-7 datasheet, DDZ23Q-7 pinout, DDZ23Q-7 application, or DDZ23Q-7 equivalent, key selection criteria include zener voltage tightness (±2.5% typical), low thermal resistance (425 °C/W on minimal pad), AEC-Q101 qualification for automotive use, and compatibility with automated SMT assembly.
Technical Context
This device functions as a two-terminal, silicon planar Zener diode optimized for stable voltage regulation under reverse bias. Its breakdown mechanism combines avalanche and Zener effects, with temperature coefficient near +0.08 %/°C in the 22–24 V range - enabling predictable drift compensation in reference designs.
The SOD123 package supports high-density PCB layouts and features matte tin-annealed terminals solderable per MIL-STD-202, Method 208. Moisture sensitivity level is Level 1 (J-STD-020), eliminating bake requirements prior to reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.61–23.77 V at IZT = 5 mA - defines precise regulation point for feedback networks |
| Zener Impedance (ZZT) | 35 Ω at IZT = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.05 µA at VR = 19.0 V - enables low-power standby operation without significant quiescent loss |
| Power Dissipation | 294 mW at TA = 25°C on minimal pad - sets practical continuous current limit (~13 mA at 23 V) |
| Thermal Resistance (RθJA) | 425 °C/W - determines junction temperature rise under ambient-limited conditions |
| Temperature Coefficient | +0.08 %/°C (typ.) - allows predictable voltage drift modeling across –65 to +150°C operating range |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking; dimensions: 2.65 mm × 1.55 mm × 1.05 mm (E × D × A); weight ≈ 0.01 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; establishes reference polarity for regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input or feedback node; maintains stable voltage relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% over production lot - reduces need for post-assembly calibration in voltage references |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS power rails |
| Lead-free & halogen-free construction | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900 ppm Br+Cl, <1000 ppm Sb) |
| SMT-compatible packaging | Tape-and-reel (3000 pcs/reel) with J-STD-020 Level 1 moisture rating - zero-bake reflow readiness |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Stabilizing 24 V rail-derived reference for ADC biasing in engine management systems. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 23 V node for op-amp bias and sensor excitation. Use Value: Tight 2.5% typical VZ tolerance and AEC-Q101 qualification ensure long-term accuracy under thermal cycling and vibration. |
Use Scenario: Clamping transient overvoltage on 4–20 mA current loop inputs exposed to field wiring surges. IC Role / Device Role / Timing Role: Two-terminal shunt protector limiting input voltage to ≤24 V during ESD or inductive kick events. Use Value: Low 35 Ω ZZT ensures rapid clamping response; SOD123 footprint enables compact placement near connector entry points. |
| Medical Infusion Pump Power Monitor | Telecom DC-DC Converter Feedback |
Use Scenario: Monitoring battery voltage in portable infusion pumps using resistive divider into microcontroller ADC. IC Role / Device Role / Timing Role: Precision reference for ratiometric measurement of Li-ion cell voltage (8.4–12.6 V range). Use Value: Stable +0.08 %/°C TC minimizes measurement drift across clinical operating temperatures (0–40°C). |
Use Scenario: Setting output voltage of isolated flyback converter in telecom base station power module. IC Role / Device Role / Timing Role: Secondary-side zener reference feeding optocoupler feedback path to primary controller. Use Value: 294 mW dissipation rating supports reliable operation at full load with minimal heatsinking on secondary PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24 | 24.0 V nominal, ±5% tolerance, 85 Ω ZZT @ 5 mA, SOT-23 package | Higher impedance limits regulation accuracy in precision feedback; smaller SOT-23 thermal mass reduces power handling | Select when board space is constrained and ±5% VZ tolerance suffices without low-Z requirement |
| MMSZ5248B | 22.0 V nominal, ±5% tolerance, 35 Ω ZZT @ 20 mA, SOD-123 package, non-automotive grade | Lacks AEC-Q101 qualification and tighter IR spec (0.1 µA vs. 0.05 µA); same footprint but no automotive change control | Acceptable for industrial/commercial designs where automotive reliability and traceability are not mandated |
Compared with BZX84-C24 and MMSZ5248B, DDZ23Q-7 delivers superior regulation stability (lower ZZT at lower test current), guaranteed automotive qualification, and tighter leakage - making it optimal for safety-critical or thermally demanding reference nodes.
Availability
DDZ23Q-7 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC protection, medical device power monitoring, and telecom DC-DC feedback requiring stable component supply and AEC-Q101 compliance.
Supply support for DDZ23Q-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 high-precision, high-reliability voltage reference applications in automotive and industrial markets, emphasizing tight VZ tolerance, low ZZT, and robust qualification for harsh environments.
FAQ
What is the maximum continuous reverse current for reliable operation of DDZ23Q-7?
At 25°C ambient and using the minimal recommended pad layout, DDZ23Q-7 supports up to 12.6 mA continuous reverse current before exceeding its 294 mW power limit (23.77 V × 12.6 mA ≈ 294 mW). Derating is required above 25°C per the 425 °C/W RθJA.
Does DDZ23Q-7 require external series resistance in standard voltage reference configurations?
Yes - a current-limiting resistor is mandatory to set IZ within 5–20 mA for optimal regulation. For example, with a 28 V supply and target IZ = 10 mA, a 470 Ω resistor provides ~10.6 mA while maintaining VZ stability and staying within power limits.
How does the AEC-Q101 qualification impact the manufacturing process for DDZ23Q-7?
DDZ23Q-7 is produced in IATF 16949-certified facilities with PPAP documentation, lot-level traceability, and extended reliability testing (including HTOL, TC, and HAST), ensuring consistent performance across automotive temperature ranges (–40 to +125°C junction) and lifetime requirements.
Can DDZ23Q-7 be used in place of a 24 V Zener like DDZ24C-7 in existing designs?
No - DDZ23Q-7's 22.61–23.77 V range is 0.23–1.39 V lower than DDZ24C-7's 23.12–24.31 V range. Substitution requires verification of system margin, especially in overvoltage clamp roles where 0.5 V headroom may affect protection threshold integrity.
DDZ23Q-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):
- 23.19 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 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
DDZ23Q-7 FAQ
1.How can I place an order for DDZ23Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ23Q-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 DDZ23Q-7 reliable?
The price and inventory of DDZ23Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ23Q-7 is usually 5 days.
3.What payment methods are accepted for DDZ23Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ23Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ23Q-7?
DDZ23Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ23Q-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 DDZ23Q-7?
For technical support, including DDZ23Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ23Q-7 requirements.
6.How does Aetrix verify that DDZ23Q-7 is sourced from the original manufacturer or authorized distributors?
All DDZ23Q-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 DDZ23Q-7 meets industry standards.
7.What is the process for return or replacement of DDZ23Q-7?
All DDZ23Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ23Q-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 DDZ23Q-7 part is unused and in its original packaging.
Return procedure for DDZ23Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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