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Diodes Incorporated DDZ17Q-7
- Part No.:
- DDZ17Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ17Q-7.pdf
- Description:
- DIODE ZENER 17V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
DDZ17Q-7 from Diodes Incorporated is a precision surface-mount Zener diode with nominal zener voltage 16.82–17.70 V at 10 mA test current, ±5% tolerance, 23 Ω dynamic impedance at 10 mA, and 14.0 V maximum reverse voltage rating. It operates in SOD123 package, supports automotive AEC-Q101 qualification, and delivers stable voltage reference in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the DDZ17Q-7 datasheet, DDZ17Q-7 pinout, DDZ17Q-7 application, or DDZ17Q-7 equivalent, this part serves as a low-capacitance (≈1.5 pF), temperature-stable (TC ≈ +0.06%/°C) voltage reference for analog sensing, regulator error amplifiers, and ESD-clamped signal conditioning stages where tight VZ tolerance and RoHS-compliant green packaging are required.
Technical Context
This device functions as a two-terminal shunt voltage regulator, maintaining a stable reference voltage across its cathode-anode terminals when reverse-biased above its breakdown threshold. Its zener voltage is specified at IZT = 10 mA with guaranteed min/max bounds and low dynamic impedance (ZZT = 23 Ω), enabling accurate regulation under varying load conditions.
The SOD123 package features a single cathode band marking, matte tin-plated alloy 42 leads, and UL 94V-0 molded compound. Thermal resistance is 425 °C/W (note 8) on minimal pad layout, supporting operation from –65°C to +150°C with 294 mW derated power dissipation at TA = 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.82–17.70 V at IZT = 10 mA - defines precise regulation point for feedback networks |
| Zener Impedance (ZZT) | 23 Ω at IZT = 10 mA - ensures minimal output voltage shift under load transients |
| Power Dissipation (PD) | 294 mW at TA = 25°C (min pad layout) - sets thermal design limit for PCB trace sizing |
| Reverse Current (IR) | 0.05 µA at VR = 14.0 V - guarantees high off-state impedance for leakage-sensitive biasing |
| Temperature Coefficient | +0.06%/°C near 17 V - enables predictable drift compensation in wide-temperature industrial sensors |
| Total Capacitance | ≈1.5 pF at VR = 1 V, f = 1 MHz - preserves high-frequency signal integrity in RF bias networks |
| Package | SOD123 - standardized 2-pin surface-mount footprint compatible with automated pick-and-place |
Pinout & Package
SOD123 is a 2-terminal surface-mount plastic package with cathode identified by a visible band on the body. 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 ground or low-side return path in shunt regulator configuration |
| Cathode | Regulated output node | Provides stable VZ referenced to anode; marked with band for polarity identification |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% (16.82–17.70 V range) - eliminates need for post-production trimming in voltage reference designs |
| AEC-Q101 qualified | Automotive-grade reliability with PPAP support - enables direct use in ADAS power management without requalification |
| Green molding compound | Halogen- and antimony-free, UL 94V-0 rated - meets IPC-J-STD-020 moisture sensitivity Level 1 for zero bake requirement |
| Low dynamic impedance | 23 Ω at 10 mA - maintains <1% output deviation across 1–20 mA operating range in feedback loops |
| Stable temperature coefficient | +0.06%/°C - reduces calibration drift to <±10 mV over –40°C to +125°C ambient |
Applications
| Industrial Power Supply Feedback | Automotive Sensor Biasing |
|---|---|
Use Scenario: Regulating output of isolated flyback converter via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 17 V threshold for TL431-type error amplifier input. Use Value: Tight VZ tolerance ensures ±1.5% output regulation accuracy without external trimming resistors. |
Use Scenario: Providing stable bias voltage to MEMS pressure sensor bridge in engine control unit. IC Role / Device Role / Timing Role: Low-noise, low-capacitance reference source for Wheatstone bridge excitation. Use Value: 1.5 pF capacitance prevents high-frequency coupling into sensitive analog front-end; AEC-Q101 ensures field reliability. |
| Overvoltage Clamp Protection | Programmable Threshold Detector |
Use Scenario: Clamping 24 V CAN bus line against transient surges in vehicle infotainment head unit. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting rail voltage to 17.7 V during ISO 7637-2 pulse 1/2a events. Use Value: 294 mW power rating sustains 100 ms surge without degradation; SOD123 footprint fits compact ESD guard ring layout. |
Use Scenario: Setting trip point for comparator-based battery cell overvoltage detection in BMS module. IC Role / Device Role / Timing Role: Precision reference input to LM393 comparator, triggering shutdown at 17.2 V ±0.2 V. Use Value: 23 Ω ZZT minimizes reference error due to comparator input bias current, improving trip accuracy to ±0.15 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16LT1G | Zener voltage 15.5–16.5 V (±5%), ZZT = 40 Ω at 5 mA, SOT-23 package | Higher impedance and lower VZ limit use in low-current biasing only; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive compliance and tighter regulation is unnecessary |
| MMSZ5246B-TP | Zener voltage 16.0–17.0 V (±5%), ZZT = 30 Ω at 20 mA, SOD-123 package, commercial grade | Same footprint but lacks AEC-Q101 qualification and has higher TC (+0.08%/°C); no PPAP support | Choose for non-automotive industrial designs where full automotive traceability is not mandated |
Compared with BZX84-C16LT1G and MMSZ5246B-TP, DDZ17Q-7 offers superior thermal stability, lower dynamic impedance, and full automotive qualification-making it the preferred choice for safety-critical voltage references requiring long-term parametric consistency.
Availability
DDZ17Q-7 is available at Aetrix Electronics and suitable for automotive ECU power management, industrial sensor signal conditioning, and telecom DC-DC converter feedback loops requiring stable component supply with full AEC-Q101 documentation and traceable lot history.
Supply support for DDZ17Q-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 computing markets.
The DDZ series targets precision voltage reference applications demanding tight VZ tolerance, low noise, and automotive-grade reliability-designed specifically for feedback, clamping, and biasing roles in harsh-environment power systems.
FAQ
What is the maximum continuous reverse voltage rating for DDZ17Q-7?
The maximum reverse voltage (VR) is 14.0 V, defined as the highest DC voltage at which reverse leakage remains ≤0.05 µA. This rating ensures safe operation below breakdown in clamping configurations and establishes the upper limit for non-conductive biasing applications.
Is DDZ17Q-7 suitable for use in high-frequency signal paths?
Yes-its typical total capacitance is 1.5 pF at 1 V reverse bias and 1 MHz, making it appropriate for RF bias networks and high-speed comparator reference inputs where parasitic loading must remain below 2 pF to avoid phase margin loss.
How does the AEC-Q101 qualification impact board-level reliability?
AEC-Q101 qualification confirms performance across extended temperature cycling (–40°C to +125°C), mechanical shock, and humidity testing. For DDZ17Q-7, this translates to >1000 hours of operation without parameter shift in automotive under-hood environments.
Can DDZ17Q-7 replace DDZ17B-7 in existing designs?
Yes-DDZ17Q-7 shares identical electrical specifications and SOD123 footprint with DDZ17B-7, differing only in automotive qualification (Q suffix), PPAP capability, and IATF16949 manufacturing. No layout or schematic changes are required for drop-in replacement in new automotive designs.
DDZ17Q-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):
- 17 V
- Tolerance:
- ±2.5%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 23 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 14 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
DDZ17Q-7 FAQ
1.How can I place an order for DDZ17Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ17Q-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 DDZ17Q-7 reliable?
The price and inventory of DDZ17Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ17Q-7 is usually 5 days.
3.What payment methods are accepted for DDZ17Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ17Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ17Q-7?
DDZ17Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ17Q-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 DDZ17Q-7?
For technical support, including DDZ17Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ17Q-7 requirements.
6.How does Aetrix verify that DDZ17Q-7 is sourced from the original manufacturer or authorized distributors?
All DDZ17Q-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 DDZ17Q-7 meets industry standards.
7.What is the process for return or replacement of DDZ17Q-7?
All DDZ17Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ17Q-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 DDZ17Q-7 part is unused and in its original packaging.
Return procedure for DDZ17Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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