My Inquiry
My Account
Diodes Incorporated DDZX16-7
- Part No.:
- DDZX16-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX16-7.pdf
- Description:
- DIODE ZENER 16V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,467
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DDZX16-7 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 ±1.5% VZ tolerance, <0.05 µA reverse leakage at 12 V, and is AEC-Q101 qualified for automotive-grade reliability in voltage reference and regulation circuits.
For engineers reviewing the DDZX16-7 datasheet, DDZX16-7 pinout, DDZX16-7 application, or DDZX16-7 equivalent, this part is selected for stable low-power voltage clamping, precision biasing in analog front-ends, and overvoltage protection in space-constrained industrial sensors and automotive ECUs where thermal stability and low leakage are critical.
Technical Context
This device operates as a two-terminal shunt regulator with sharp breakdown characteristics and low dynamic impedance across its specified zener current range (10 mA). Its temperature coefficient is +0.07 %/°C (typical) near 16 V, enabling predictable drift behavior in ambient temperature variations from –65 °C to +150 °C.
The SOT23 package supports automated assembly and provides thermal resistance of 417 °C/W (junction-to-ambient on FR-4), requiring derating above +25 °C per Figure 1. Polarity is defined by cathode marking (band), and terminal finish is matte tin annealed over Alloy 42 leadframe for reliable solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.69–16.51 V at IZT = 10 mA - defines precise clamping threshold for reference or protection |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - sets maximum continuous power handling without heatsinking |
| Zener Impedance (ZZT) | 18 Ω max at 10 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤0.05 µA at VR = 12 V - guarantees negligible error current in high-impedance bias networks |
| Thermal Resistance (RθJA) | 417 °C/W - determines junction temperature rise under given ambient and power conditions |
| Operating Temperature | –65 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
Pinout & Package
Package: SOT23 - surface-mount plastic case with 3 terminals; polarity indicated by cathode band; weight ≈ 0.008 g; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current entry point in forward bias; grounded node in shunt regulation | Connected to system ground or low-impedance return path during zener operation |
| Cathode (Pin 2) | Zener voltage reference node; connected to input supply or protected rail | Defines regulated output voltage relative to anode; marked with band on top view |
| No-Connect (Pin 3) | Internally unconnected leadframe extension | Provides mechanical stability and thermal conduction path; must not be electrically tied |
Key Features
| Feature | Design Value |
|---|---|
| Very tight VZ tolerance | ±1.5% (15.69–16.51 V) - reduces calibration overhead in precision reference designs |
| AEC-Q101 qualification | Automotive-grade reliability - enables use in engine control, body electronics, and ADAS modules |
| Low leakage current | <0.05 µA at 12 V - preserves accuracy in high-resistance divider networks and battery-powered systems |
| Sharp breakdown knee | Low ZZK (150 Ω) at IZK = 0.5 mA - improves regulation onset predictability below nominal test current |
| Lead-free & halogen-free | RoHS-compliant, <900 ppm Br/Cl, <1000 ppm Sb - meets global environmental compliance requirements |
Applications
| Industrial Sensor Signal Conditioning | Automotive ECU Voltage Reference |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure or temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 16 V bias to sensor Wheatstone bridge. Use Value: Tight VZ tolerance and low tempco minimize offset drift across –40 °C to +85 °C operating range. |
Use Scenario: Generating stable reference for ADC input scaling in engine control unit (ECU) power management subsystems. IC Role / Device Role / Timing Role: Precision zener clamp regulating internal 16 V rail used for analog monitoring circuitry. Use Value: AEC-Q101 qualification and 150 °C max TJ ensure long-term stability in under-hood thermal environments. |
| Low-Power IoT Node Protection | Programmable Logic Supply Clamp |
|
Use Scenario: Overvoltage clamping on 3.3 V or 5 V supply rails of battery-operated wireless sensor nodes. IC Role / Device Role / Timing Role: Transient suppressor limiting surge-induced rail excursion during ESD events. Use Value: 300 mW rating and fast response enable robust protection without external TVS diode in compact layouts. |
Use Scenario: Setting logic-high threshold for configurable I/O pins in FPGA or CPLD development boards. IC Role / Device Role / Timing Role: Programmable voltage reference defining VIH/VIL levels via resistor divider. Use Value: Low ZZT (18 Ω) maintains divider ratio accuracy despite varying load currents from I/O switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener diode 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 high-accuracy references | Select when cost sensitivity outweighs precision requirements and AEC-Q101 is not mandated |
| MMSZ4687-7 | 16 V nominal, ±5% tolerance, 350 mW PD, no AEC-Q101 qualification | Limited to commercial-grade industrial use; lacks automotive reliability validation | Choose for high-volume consumer electronics where extended temperature range is not required |
Compared with BZX84-C16-7 and MMSZ4687-7, DDZX16-7 offers superior voltage accuracy, lower dynamic impedance, and certified automotive reliability-making it the preferred choice for safety-critical or high-stability analog reference designs where long-term parametric consistency matters.
Availability
DDZX16-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive ECU voltage reference, and low-power IoT node protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DDZX16-7 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 DDZX series belongs to Diodes' precision Zener diode product line, engineered specifically for stable voltage reference and regulation in space-constrained, thermally demanding applications requiring AEC-Q101 compliance.
FAQ
What is the maximum continuous zener current for DDZX16-7 at 25°C?
The DDZX16-7 is rated for 10 mA zener test current (IZT) per datasheet specifications. At 25°C ambient and with proper PCB pad layout, it can sustain up to ~18.75 mA continuously before reaching its 300 mW power limit (PD/VZ ≈ 300 mW / 16 V). Derating applies above 25°C per Figure 1.
Is DDZX16-7 compatible with lead-free reflow soldering profiles?
Yes. DDZX16-7 uses matte tin annealed terminals and is qualified for standard lead-free reflow processes (J-STD-020 Level 1 moisture sensitivity). Its plastic package withstands peak temperatures up to 260°C, and the device meets IPC/JEDEC J-STD-020 requirements for MSL Level 1 handling.
How does the temperature coefficient affect regulation accuracy over –40°C to +125°C?
At 16 V, DDZX16-7 exhibits a typical temperature coefficient of +0.07 %/°C. Over a 165°C span, this yields ~11.6 mV/°C × 165°C ≈ ±1.9 V total drift. Actual variation remains within ±1.2 V due to nonlinearity and curvature effects shown in Figures 16–19, preserving usability in most industrial reference applications.
Can DDZX16-7 replace a 1N4744A in existing designs?
No. The 1N4744A is a through-hole 14 V, 1 W Zener in DO-41 package. DDZX16-7 is a 16 V, 300 mW SOT23 device with different thermal behavior, polarity marking, and footprint. Direct replacement requires PCB redesign, power derating, and verification of zener voltage match and leakage impact on the target circuit.
DDZX16-7 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):
- 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
DDZX16-7 FAQ
1.How can I place an order for DDZX16-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX16-7 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 DDZX16-7 reliable?
The price and inventory of DDZX16-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX16-7 is usually 5 days.
3.What payment methods are accepted for DDZX16-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX16-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX16-7?
DDZX16-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX16-7 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 DDZX16-7?
For technical support, including DDZX16-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX16-7 requirements.
6.How does Aetrix verify that DDZX16-7 is sourced from the original manufacturer or authorized distributors?
All DDZX16-7 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 DDZX16-7 meets industry standards.
7.What is the process for return or replacement of DDZX16-7?
All DDZX16-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX16-7, 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 DDZX16-7 part is unused and in its original packaging.
Return procedure for DDZX16-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX16-7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
