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Diodes Incorporated DDZX15-7
- Part No.:
- DDZX15-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX15-7.pdf
- Description:
- DIODE ZENER 15V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,185
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Product details
Overview
DDZX15-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 14.80–15.57 V at 10 mA test current, 18 Ω maximum zener impedance at 10 mA, and 0.05 μA maximum reverse leakage at 12.0 V. It delivers 300 mW power dissipation on FR-4 PCB in SOT23 package and is qualified to AEC-Q101 for automotive-grade reliability.
For engineers reviewing the DDZX15-7 datasheet, DDZX15-7 pinout, DDZX15-7 application, or DDZX15-7 equivalent, this part serves as a stable voltage reference in low-power analog circuits, overvoltage protection clamps, and precision biasing networks where tight VZ tolerance (±2.5%), low dynamic impedance, and low leakage are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with sharp knee characteristics and exhibits temperature coefficient behavior typical of mid-voltage Zeners (~0.07 %/°C near 15 V), as confirmed in Figure 17 of DS30408 Rev. 13–2. Its 18 Ω zener impedance at IZT = 10 mA ensures minimal regulation error under load variation.
The device uses alloy 42 leadframe with matte tin annealed terminals, rated for moisture sensitivity level 1 per J-STD-020, and achieves thermal resistance of 417 °C/W junction-to-ambient when mounted on FR-4 with recommended pad layout - enabling stable operation from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.80–15.57 V at IZT = 10 mA - defines precise regulation point for reference or clamp circuits |
| Zener Impedance (ZZT) | 18 Ω max at IZT = 10 mA - ensures low output impedance and minimal voltage shift under current change |
| Reverse Leakage (IR) | 0.05 μA max at VR = 12.0 V - enables ultra-low standby power in battery-sensitive designs |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - sets maximum continuous power handling without derating below 25 °C ambient |
| Thermal Resistance (RθJA) | 417 °C/W - determines junction temperature rise per mW dissipated in standard layout |
| Operating Temperature | –65 °C to +150 °C - supports extended industrial and automotive under-hood environments |
| AEC-Q101 Qualified | Yes - validates reliability for automotive electronics per stress-test requirements |
Pinout & Package
Package: SOT23 - surface-mount plastic case with 3-terminal configuration, 0.008 g weight, UL 94V-0 flammability rating, and matte tin–annealed alloy 42 leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to circuit ground or lower potential node in reverse-biased Zener operation |
| Cathode (Pin 2) | Zener breakdown terminal / voltage reference output | Provides regulated voltage node; polarity marking visible on top surface per datasheet diagram |
| No Connection (Pin 3) | Internal die attach / mechanical support only | Not electrically connected; serves structural role in SOT23 leadframe assembly |
Key Features
| Feature | Design Value |
|---|---|
| Very tight VZ tolerance | ±2.5% (14.80–15.57 V range at 10 mA) - reduces calibration overhead in precision references |
| Low zener impedance | 18 Ω max at 10 mA - maintains regulation accuracy across ±2 mA load current variation |
| Ultra-low leakage current | 0.05 μA max at 12 V - avoids parasitic discharge in high-impedance sensor bias networks |
| AEC-Q101 qualification | Validated for automotive applications - eliminates need for additional reliability screening |
| Lead-free & halogen-free | RoHS-compliant, <900 ppm Br/Cl, <1000 ppm Sb - meets global environmental compliance mandates |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Reference |
|---|---|
|
Use Scenario: Providing stable bias voltage for op-amp input stages in 4–20 mA transmitter circuits operating at 85 °C ambient. IC Role / Device Role / Timing Role: Precision voltage reference for ADC driver and current-loop scaling circuitry. Use Value: Tight 2.5% VZ tolerance and low 18 Ω impedance minimize gain drift and maintain 12-bit effective resolution. |
Use Scenario: Clamping ECU supply rail transients during load-dump events in 12 V vehicle systems. IC Role / Device Role / Timing Role: Overvoltage protection element shunting surge energy to ground before downstream ICs. Use Value: Sharp breakdown onset and 300 mW FR-4-rated dissipation enable reliable clamping without thermal runaway. |
| Medical Portable Device Power Monitoring | Smart Meter Voltage Reference |
|
Use Scenario: Generating reference for battery voltage monitoring in Class II medical devices with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Low-leakage (<0.05 μA) Zener establishing threshold for low-battery detection comparator. Use Value: Near-zero reverse current prevents measurable battery drain over multi-year storage periods. |
Use Scenario: Stabilizing internal reference for metrology-grade ADC in ANSI C12.20-certified electricity meters. IC Role / Device Role / Timing Role: Primary voltage reference source for 24-bit sigma-delta converter front-end. Use Value: AEC-Q101 qualification and –65 °C to +150 °C operation ensure long-term stability across outdoor deployment conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15-7 (ON Semiconductor) | VZ = 14.7–15.3 V (±2.7%), ZZT = 30 Ω max at 5 mA, no AEC-Q101 qualification | Limited to commercial-grade industrial use; lacks automotive reliability validation | Select when cost sensitivity outweighs automotive qualification needs and higher ZZT is acceptable |
| MMSZ5245B-7-F (Diodes Inc.) | VZ = 14.7–15.3 V (±5%), ZZT = 25 Ω max at 20 mA, same SOT23 package but wider tolerance | Suitable for non-critical biasing where ±5% regulation is sufficient | Choose for legacy design continuity or where tighter VZ spec is not required |
Compared with BZX84-C15-7 and MMSZ5245B-7-F, DDZX15-7 provides superior voltage accuracy (±2.5% vs. ±2.7%/±5%), lower dynamic impedance (18 Ω vs. 30 Ω/25 Ω), and certified AEC-Q101 reliability - making it the preferred choice for automotive and high-precision industrial references.
Availability
DDZX15-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control module reference, and smart meter voltage reference requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DDZX15-7 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 integrated circuits, specializing in high-reliability components for automotive, industrial, and consumer markets.
DDZX15-7 belongs to the DDZX series of precision Zener diodes, engineered specifically for applications demanding tight voltage tolerance, low leakage, and AEC-Q101–qualified robustness in compact SOT23 packaging.
FAQ
What is the maximum power dissipation of DDZX15-7 on a standard FR-4 PCB?
DDZX15-7 is rated for 300 mW power dissipation when mounted on FR-4 PCB using the recommended pad layout specified in Diodes Incorporated's package outline documentation. Derating begins above +25 °C ambient, following the curve in Figure 1 of DS30408 Rev. 13–2, reaching zero dissipation at +150 °C.
Does DDZX15-7 have automotive qualification?
Yes - DDZX15-7 is qualified to AEC-Q101 standards for high-reliability automotive applications. This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, confirming suitability for under-hood and body electronics without additional screening.
What is the zener voltage tolerance at 10 mA test current?
The zener voltage tolerance is ±2.5%, corresponding to a guaranteed range of 14.80 V to 15.57 V at IZT = 10 mA and TA = +25 °C. This specification is explicitly listed in the Electrical Characteristics table of DS30408 Rev. 13–2 for type number DDZX15.
How is polarity identified on the SOT23 package?
Polarity is marked on the top surface of the SOT23 package via a cathode band adjacent to Pin 2. The device schematic in DS30408 Rev. 13–2 shows Pin 2 as cathode and Pin 1 as anode; Pin 3 is internally unconnected. Orientation matches standard SOT23 pinout with Pin 1 at bottom-left when notch faces up.
DDZX15-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 18 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDZX15-7 FAQ
1.How can I place an order for DDZX15-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX15-7 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 DDZX15-7 reliable?
The price and inventory of DDZX15-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX15-7 is usually 5 days.
3.What payment methods are accepted for DDZX15-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX15-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX15-7?
DDZX15-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX15-7 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 DDZX15-7?
For technical support, including DDZX15-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX15-7 requirements.
6.How does Aetrix verify that DDZX15-7 is sourced from the original manufacturer or authorized distributors?
All DDZX15-7 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 DDZX15-7 meets industry standards.
7.What is the process for return or replacement of DDZX15-7?
All DDZX15-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX15-7, 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 DDZX15-7 part is unused and in its original packaging.
Return procedure for DDZX15-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX15-7 Tags
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