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Diodes Incorporated DDZX14-7
- Part No.:
- DDZX14-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX14-7.pdf
- Description:
- DIODE ZENER 14V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,757
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Product details
Overview
DDZX14-7 from Diodes Incorporated is a surface-mount precision Zener diode in SOT23 package, rated for 14.0 V nominal zener voltage (13.65–14.35 V range), 10 mA test current, 16 Ω zener impedance at IZT, and 0.05 μA reverse leakage at 11.0 V. It delivers stable voltage reference in low-power analog monitoring circuits with AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the DDZX14-7 datasheet, DDZX14-7 pinout, DDZX14-7 application, or DDZX14-7 equivalent, this part is selected for precision biasing, overvoltage clamping, and reference generation where tight VZ tolerance (±2.5%), low dynamic impedance, and thermal stability across –65°C to +150°C are required.
Technical Context
This Zener operates in reverse breakdown mode with sharp knee characteristics, enabling accurate regulation under low-current conditions (IZK = 0.5 mA). Its 300 mW power dissipation on FR-4 PCB and 417°C/W junction-to-ambient thermal resistance define its derating envelope up to +125°C ambient.
The device exhibits a positive temperature coefficient of approximately +0.08%/°C near 14 V (per Fig. 18), and total capacitance is <2.5 pF at VR = 1 V (inferred from Fig. 10 trend), supporting high-frequency noise suppression in signal conditioning paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.65–14.35 V @ IZT = 10 mA - defines precise clamping threshold for 12 V rail protection |
| Zener Impedance (ZZT) | 16 Ω @ IZT = 10 mA - ensures minimal output voltage shift under load transients |
| Reverse Leakage (IR) | 0.05 μA @ VR = 11.0 V - enables ultra-low standby current in battery-backed circuits |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - supports continuous operation without heatsinking in compact layouts |
| Operating Temperature | –65°C to +150°C - qualified for under-hood automotive and industrial control environments |
| AEC-Q101 Qualified | Yes - meets stress-test requirements for automotive electronics reliability and lifetime validation |
Pinout & Package
Package: SOT23 - 3-terminal plastic surface-mount package with matte tin annealed terminals, UL 94V-0 rating, and 0.008 g weight. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to system ground when used as shunt regulator; defines polarity for correct biasing |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Connected to input rail via series resistor; supplies stable reference voltage to downstream circuitry |
| No Connect (Pin 3) | Internal die attach pad - not electrically connected | Thermally conductive but isolated; must be left floating or tied to ground only for thermal relief (not electrical function) |
Key Features
| Feature | Design Value |
|---|---|
| Very tight VZ tolerance | ±2.5% (13.65–14.35 V) - reduces calibration overhead in factory-trimmed sensor interfaces |
| Low zener impedance | 16 Ω @ 10 mA - maintains regulation accuracy during 1–5 mA load variations in feedback networks |
| AEC-Q101 qualification | Qualified for automotive applications - eliminates need for additional reliability screening in Tier-1 BOMs |
| Halogen- and antimony-free | <900 ppm Br/Cl, <1000 ppm Sb - satisfies strict environmental compliance for EU and China RoHS markets |
| Automated assembly compatible | SOT23 footprint with J-STD-020-compliant terminations - supports high-yield pick-and-place and reflow |
Applications
| Automotive Cabin Control Module | Industrial PLC Analog Input Stage |
|---|---|
|
Use Scenario: Voltage reference for 12-bit ADC measuring 0–24 V battery-supplied sensors. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 14 V node for op-amp biasing and ADC reference divider. Use Value: ±2.5% VZ tolerance and 16 Ω ZZT ensure ≤0.3 LSB error contribution across temperature and line variation. |
Use Scenario: Overvoltage clamp protecting 24 V digital I/O inputs against load dump transients. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting surge energy before TVS activation. Use Value: Sharp breakdown onset at 13.65 V and 300 mW rating enable clamping within 100 ns without thermal runaway. |
| Medical Infusion Pump Power Monitor | Telecom Remote PHY Power Supervisor |
|
Use Scenario: Low-power battery voltage monitor in Class II medical device with 5-year shelf life. IC Role / Device Role / Timing Role: Precision bias source for comparator detecting end-of-life battery drop below 12.5 V. Use Value: 0.05 μA leakage at 11 V preserves >99.9% of standby current budget over 10-year design lifetime. |
Use Scenario: Reference generator for DC-DC controller supervising +12 V supply in remote radio head. IC Role / Device Role / Timing Role: Stable 14 V reference feeding error amplifier feedback network. Use Value: –65°C to +150°C operating range and AEC-Q101 qualification support outdoor deployment in uncontrolled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C13-7 | VZ = 12.0–14.0 V (±5%), ZZT = 30 Ω @ 5 mA, no AEC-Q101 qualification | Lower cost general-purpose replacement; lacks automotive reliability validation | Select only for non-automotive consumer or industrial prototypes where qualification is not mandated |
| MMSZ4688T1G | VZ = 13.0–14.0 V (±5%), ZZT = 25 Ω @ 1 mA, 500 mW rating on FR-4 | Higher power margin but looser tolerance and higher leakage (0.1 μA @ 11 V) | Prefer when thermal headroom is critical and ±5% VZ is acceptable in production calibration |
Compared with BZX84-C13-7 and MMSZ4688T1G, DDZX14-7 provides tighter voltage tolerance, lower dynamic impedance, and automotive-grade reliability-making it optimal for safety-critical or production-binned systems where reference stability directly impacts measurement integrity.
Availability
DDZX14-7 is available at Aetrix Electronics and suitable for automotive cabin control modules, industrial PLC analog input stages, medical infusion pump power monitors, and telecom remote PHY power supervisors requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for DDZX14-7 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 with ISO/TS 16949 and ISO 14001 certifications.
DDZX14-7 belongs to the DDZX precision Zener family, designed specifically for applications demanding tight voltage tolerance, low leakage, and AEC-Q101 qualification in space-constrained SOT23 packages.
FAQ
What is the maximum continuous power dissipation for DDZX14-7 on standard FR-4 PCB?
DDZX14-7 is rated for 300 mW continuous power dissipation when mounted on FR-4 PCB using Diodes Incorporated's recommended pad layout. Derating begins linearly above +25°C ambient, reaching zero dissipation at +125°C (per Fig. 1). Exceeding this limit risks thermal runaway and parametric shift.
Does DDZX14-7 have a specified zener impedance at low test currents like 1 mA?
No-datasheet specifies ZZT = 16 Ω only at IZT = 10 mA and ZZK = 110 Ω at IZK = 0.5 mA. Impedance rises sharply below 1 mA; typical curves (Figs. 5, 12) show >200 Ω at 100 μA, making it unsuitable for sub-mA reference applications.
Can DDZX14-7 replace DDZX13B-7 in an existing design?
DDZX14-7 has a higher nominal VZ (14.0 V vs. 13.0 V) and tighter tolerance (±2.5% vs. ±3.0%), but identical SOT23 package and thermal specs. Substitution requires verifying that 1.0 V higher clamping threshold does not violate downstream overvoltage limits or bias point stability.
Is there an automotive-qualified version of DDZX14-7 with extended temperature screening?
No-the DDZX14-7 itself is AEC-Q101 qualified per DS30408 Rev. 13–2. Diodes does not list a separate "Q" suffix variant for this voltage grade; the base part meets full automotive stress testing including HTOL, TC, and ESD per AEC-Q101 Rev. D.
DDZX14-7 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):
- 14 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 16 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11 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
DDZX14-7 FAQ
1.How can I place an order for DDZX14-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX14-7 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 DDZX14-7 reliable?
The price and inventory of DDZX14-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX14-7 is usually 5 days.
3.What payment methods are accepted for DDZX14-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX14-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX14-7?
DDZX14-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX14-7 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 DDZX14-7?
For technical support, including DDZX14-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX14-7 requirements.
6.How does Aetrix verify that DDZX14-7 is sourced from the original manufacturer or authorized distributors?
All DDZX14-7 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 DDZX14-7 meets industry standards.
7.What is the process for return or replacement of DDZX14-7?
All DDZX14-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX14-7, 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 DDZX14-7 part is unused and in its original packaging.
Return procedure for DDZX14-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX14-7 Tags
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