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Diodes Incorporated DDZX16-13
- Part No.:
- DDZX16-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX16-13.pdf
- Description:
- DIODE ZENER 16V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,072
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Product details
Overview
DDZX16-13 from Diodes Incorporated is a surface-mount precision Zener diode in SOT23 package, rated for 16 V nominal zener voltage (15.69–16.51 V), 300 mW power dissipation on FR-4 PCB, and 18 Ω maximum zener impedance at 10 mA test current. It delivers tight voltage tolerance (±2.0% typical), low leakage (≤50 nA at 12 V), and AEC-Q101 qualification for automotive-grade reliability - used for voltage regulation and reference in power supply feedback loops.
For engineers reviewing the DDZX16-13 datasheet, DDZX16-13 pinout, DDZX16-13 application, or DDZX16-13 equivalent, this page provides verified electrical specs, SOT23 terminal mapping, automotive-qualified thermal performance data, and direct alternatives with documented voltage/impedance trade-offs - all grounded in Diodes Incorporated's DS30408 Rev. 13-2 datasheet.
Technical Context
This device operates as a two-terminal voltage reference diode, exhibiting sharp reverse breakdown at precisely controlled zener voltages. Its design targets stable DC biasing and regulation in space-constrained applications where low temperature coefficient (≈+0.07%/°C near 16 V) and minimal dynamic impedance are critical.
It is optimized for automated SMT assembly on standard FR-4 boards, with matte tin–annealed terminals compliant to MIL-STD-202 solderability requirements and moisture sensitivity level 1 per J-STD-020. The SOT23 package enables high-density layout while maintaining thermal resistance of 417 °C/W junction-to-ambient under defined pad conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.69–16.51 V at IZT = 10 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - sets maximum continuous power handling without derating below 25°C |
| Zener Impedance (ZZT) | 18 Ω max at 1 kHz, 10 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤50 nA at VR = 12 V - guarantees negligible current draw in standby or high-impedance sensing paths |
| Thermal Resistance (RθJA) | 417 °C/W - determines junction temperature rise under given ambient and PCB layout conditions |
| Operating Temperature | −65 to +150 °C - supports extended-range industrial and automotive under-hood environments |
Pinout & Package
SOT23 plastic surface-mount package with three terminals: anode, cathode, and unused (floating) third lead - standardized mechanical outline per Diodes Inc. package drawing SOT23 (J–K1–L1 dimensions confirmed).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node in reverse-biased configuration; carries forward current during transient overvoltage clamping |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage node; establishes reference potential when reverse biased above VZ |
| NC / Dummy (Pin 3) | Non-connected internal leadframe extension | Provides mechanical stability and thermal path; electrically isolated - must not be tied to any net |
Key Features
| Feature | Design Value |
|---|---|
| Very tight VZ tolerance | ±2.0% (15.69–16.51 V range) - reduces need for post-production trimming in precision references |
| AEC-Q101 qualification | Qualified for automotive electronics - meets stress testing for temperature cycling, HTRB, and ESD per AEC standard |
| Low leakage current | ≤50 nA at 12 V reverse bias - preserves battery life and signal integrity in ultra-low-power monitoring circuits |
| Green RoHS compliance | Halogen- and antimony-free, <900 ppm Br/Cl, <1000 ppm Sb - satisfies EU environmental directives without performance compromise |
Applications
| Power Supply Feedback Reference | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters via optocoupler-coupled feedback loop. IC Role / Device Role: Precision voltage reference connected across secondary-side shunt regulator (e.g., TL431 input) to set exact output threshold. Use Value: Maintains ±1% output accuracy over line/load/temperature due to tight VZ tolerance and low ZZT. |
Use Scenario: Protecting microcontroller I/O pins from ESD or surge-induced voltage spikes on 12–15 V rails. IC Role / Device Role: Low-capacitance (<2 pF) clamp diode placed between signal line and ground, conducting only above 16 V. Use Value: Limits transient overshoot to ≤16.5 V with sub-50 nA leakage - avoids false triggering while preserving signal integrity. |
| Automotive Sensor Biasing | Industrial Current Loop Reference |
|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or pressure sensors in engine control units. IC Role / Device Role: Fixed-voltage bias source operating across −40 to +125 °C ambient, referenced to chassis ground. Use Value: Delivers <±3 mV drift over full temperature range due to low TC (~+0.07%/°C) and AEC-Q101 thermal robustness. |
Use Scenario: Setting reference voltage for 4–20 mA transmitter circuitry in process automation field devices. IC Role / Device Role: Two-terminal shunt reference establishing 16 V headroom for op-amp and DAC stages driving loop current. Use Value: Enables 24 V loop compliance with 8 V margin; 18 Ω ZZT prevents gain error from load-dependent VZ shift. |
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-C16-7 | Wider VZ tolerance (±5%), higher ZZT (40 Ω), same SOT23 package | Acceptable for non-critical biasing but unsuitable for closed-loop regulation requiring <±2% accuracy | Select when cost is primary concern and thermal stability is secondary |
| MMSZ5245B-7 | Same 16 V nominal rating, ±5% tolerance, 350 mW PD, but no AEC-Q101 qualification | Lacks automotive qualification and has higher leakage (≤100 nA at 12 V) | Prefer for commercial-grade consumer power supplies where qualification is not mandated |
Compared with BZX84-C16-7 and MMSZ5245B-7, DDZX16-13 offers superior voltage accuracy, lower dynamic impedance, and automotive-grade reliability - making it the only choice for safety-critical or high-precision feedback applications demanding long-term stability and AEC compliance.
Availability
DDZX16-13 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor conditioning, and precision analog reference designs requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for DDZX16-13 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 over 50 years of power management expertise.
DDZX16-13 belongs to the DDZX series of precision Zener diodes, engineered specifically for high-stability voltage reference and regulation in automotive and industrial systems where AEC-Q101 qualification and tight parametric control are mandatory.
FAQ
What is the maximum continuous reverse current (IZ) this device can handle without degradation?
DDZX16-13 is rated for 10 mA zener test current (IZT) and supports up to 20 mA continuous reverse current under derated thermal conditions. At 25°C ambient on FR-4 with recommended pad layout, sustained operation above 15 mA requires verification against the power derating curve (Fig. 1), as junction temperature must remain below 150°C to avoid parametric shift or failure.
Does DDZX16-13 have polarity marking, and how is it identified on the SOT23 package?
Yes - DDZX16-13 uses standard SOT23 polarity: the cathode is marked by a band adjacent to Pin 2, and the top-view marking code "YY" (per Electrical Characteristics Table) appears beside the band. Pin 1 (anode) is the leftmost terminal when the band is oriented left; Pin 3 is the rightmost and unconnected.
Can DDZX16-13 replace a 1N4744A in existing designs?
No - 1N4744A is a through-hole 14 V, 1 W Zener in DO-41 package, while DDZX16-13 is a surface-mount 16 V, 300 mW device in SOT23. Differences in voltage rating, power handling, package, and thermal behavior preclude direct substitution without circuit revalidation, especially for thermal and transient response.
Is there a qualified automotive variant of DDZX16-13, and what is its part number?
Yes - the AEC-Q101 qualified automotive variant is DDZX16BQ, documented in a separate datasheet (DS30408Q). It shares identical electrical specifications and SOT23 packaging but undergoes additional qualification testing including HTOL, temperature cycling, and ESD per AEC-Q101 Rev. E, and is marked with "Q" suffix in date-code format.
DDZX16-13 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):
- 16 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
DDZX16-13 FAQ
1.How can I place an order for DDZX16-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX16-13 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 DDZX16-13 reliable?
The price and inventory of DDZX16-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX16-13 is usually 5 days.
3.What payment methods are accepted for DDZX16-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX16-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX16-13?
DDZX16-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX16-13 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 DDZX16-13?
For technical support, including DDZX16-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX16-13 requirements.
6.How does Aetrix verify that DDZX16-13 is sourced from the original manufacturer or authorized distributors?
All DDZX16-13 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 DDZX16-13 meets industry standards.
7.What is the process for return or replacement of DDZX16-13?
All DDZX16-13 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX16-13, 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 DDZX16-13 part is unused and in its original packaging.
Return procedure for DDZX16-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX16-13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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