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Diodes Incorporated DDZX5V6AQ-7
- Part No.:
- DDZX5V6AQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX5V6AQ-7.pdf
- Description:
- DIODE ZENER 5.42V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,707
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Product details
Overview
DDZX5V6AQ-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 5.45 V (min 5.28 V, max 5.55 V) at 20 mA test current, 300 mW power dissipation on FR-4 PCB, and ±1.5% voltage tolerance. It is AEC-Q101 qualified, RoHS-compliant, and used for voltage regulation and reference in automotive power supply monitoring circuits.
For engineers reviewing the DDZX5V6AQ-7 datasheet, DDZX5V6AQ-7 pinout, DDZX5V6AQ-7 application, or DDZX5V6AQ-7 equivalent, key selection criteria include zener voltage tightness (±1.5%), low dynamic impedance (80 Ω @ 20 mA), thermal resistance (417 °C/W), and automotive qualification status for under-hood sensing and ECU biasing.
Technical Context
This Zener diode operates in reverse breakdown to provide stable reference voltage with minimal temperature drift and low noise. Its 80 Ω zener impedance at 20 mA ensures low output variation under load transients, while the 460 Ω knee impedance at 1 mA supports accurate low-current regulation.
The device is characterized across -65°C to +150°C and exhibits predictable derating above 25°C ambient - power drops linearly to zero at 150°C per the 300 mW / 417 °C/W thermal profile. Polarity is unambiguous via SOT23 top-view marking and cathode band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.45 V nominal, 5.28–5.55 V range at IZT = 20 mA - enables precise 5.0 V rail supervision with <±3% margin |
| Zener Impedance (ZZT) | 80 Ω @ 20 mA - limits output voltage shift to <1.6 mV per 0.1 mA load change |
| Knee Impedance (ZZK) | 460 Ω @ 1 mA - maintains regulation integrity down to microamp-level bias currents |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - supports continuous operation at 5.5 V × 54.5 mA without heatsinking |
| Thermal Resistance (RθJA) | 417 °C/W - requires <72°C ambient rise at full power, compatible with standard automotive PCB layouts |
| Reverse Current (IR) | 2.0 μA @ VR = 5.15 V - ensures negligible leakage in high-impedance reference divider networks |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin–annealed Alloy 42 leadframe, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Anode connection | Connected to lower-potential node; polarity confirmed by cathode band on top view |
| Pin 2 (Cathode) | Cathode connection | Connected to regulated output or reference node; carries full zener current |
| Pin 3 (Anode) | Anode connection | Internally tied to Pin 1; provides mechanical stability and thermal path on FR-4 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| ±1.5% zener voltage tolerance | Reduces need for post-assembly trimming in voltage reference designs |
| 300 mW FR-4-rated dissipation | Enables direct integration into compact ECU PCBs without auxiliary thermal relief |
| Lead-free, halogen-free "Green" construction | Meets IATF 16949 manufacturing requirements and global environmental compliance mandates |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Provides stable 5.45 V reference for ADC biasing and microcontroller reset threshold detection in engine control modules. IC Role / Device Role / Timing Role: Precision voltage reference diode establishing analog ground-referenced threshold for power-on reset and brown-out detection. Use Value: Tight 5.28–5.55 V tolerance ensures consistent reset behavior across temperature and unit-to-unit variation without calibration. | Use Scenario: Supplies regulated bias voltage to bridge-based pressure sensors in factory automation transmitters. IC Role / Device Role / Timing Role: Low-drift zener reference source for ratiometric sensor excitation and signal chain offset correction. Use Value: 80 Ω dynamic impedance minimizes output perturbation during sensor current draw fluctuations, preserving measurement accuracy. |
| Telecom Power Supervision | Medical Infusion Pump Voltage Monitoring |
Use Scenario: Monitors +5 V DC/DC output in base station power management ICs to trigger fault reporting before rail collapse. IC Role / Device Role / Timing Role: Reverse-biased zener acting as overvoltage/undervoltage comparator input node in discrete supervisor circuits. Use Value: 2.0 μA reverse leakage at 5.15 V prevents false triggering in high-impedance comparator input networks. | Use Scenario: Serves as primary voltage reference for battery voltage monitoring circuitry in Class II medical infusion pumps. IC Role / Device Role / Timing Role: Safety-critical voltage reference ensuring accurate low-battery warning within IEC 60601-1 compliance margins. Use Value: AEC-Q101 qualification and -65°C to +150°C operating range support long-term reliability in sealed, thermally constrained enclosures. |
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-C5V6LT1G | Zener voltage 5.2–6.0 V (±5.4%), 300 mW rating, no AEC-Q101 qualification | Suitable for commercial-grade consumer electronics only; lacks automotive stress validation | Select when cost sensitivity outweighs automotive qualification requirement |
| MMSZ5232BT1G | Zener voltage 5.1–5.5 V (±3.8%), 500 mW rating, higher RθJA (500 °C/W), no AEC-Q101 | Higher power headroom but looser voltage tolerance and inferior thermal performance on FR-4 | Prefer only if board layout allows larger pad area or forced-air cooling |
Compared with BZX84-C5V6LT1G and MMSZ5232BT1G, DDZX5V6AQ-7 delivers tighter voltage tolerance (±1.5% vs. ±3.8–5.4%), verified automotive qualification, and lower thermal resistance - making it the sole choice for safety-critical, temperature-stable reference designs in automotive and industrial systems.
Availability
DDZX5V6AQ-7 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, telecom power supervision, and medical device voltage monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for DDZX5V6AQ-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DDZX series belongs to Diodes' precision Zener diode product line, engineered specifically for high-stability voltage reference and regulation in automotive, industrial, and medical applications demanding AEC-Q101 compliance and tight parametric control.
FAQ
What is the maximum zener test current for DDZX5V6AQ-7?
The specified zener test current is 20 mA, at which the nominal zener voltage is 5.45 V with a tolerance window of 5.28–5.55 V. This current level balances measurement repeatability and self-heating effects, and the device remains within its 300 mW power limit at this condition (5.45 V × 20 mA = 109 mW).
Is DDZX5V6AQ-7 suitable for high-temperature environments like engine compartments?
Yes - DDZX5V6AQ-7 is rated for operation from -65°C to +150°C and is AEC-Q101 qualified, meaning it has passed accelerated stress tests including temperature cycling, high-temperature operating life, and unbiased high-humidity storage. Its 417 °C/W thermal resistance is validated on standard FR-4 PCBs used in automotive ECUs.
How does the 80 Ω zener impedance affect circuit performance?
An 80 Ω dynamic impedance at 20 mA means the output voltage changes by approximately 8 mV per 0.1 mA change in load current. This low value ensures minimal regulation error in precision reference applications such as ADC biasing or reset threshold generation, especially under varying load or temperature conditions.
Does DDZX5V6AQ-7 require external heat sinking in typical applications?
No - the device is rated for 300 mW dissipation on standard FR-4 PCBs using Diodes' recommended pad layout. At its maximum operating power (109 mW at 20 mA), junction-to-ambient temperature rise is ~45°C, well within safe limits. Heat sinking is unnecessary unless ambient exceeds 105°C or power approaches 300 mW continuously.
DDZX5V6AQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.42 V
- Tolerance:
- ±2.49%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 7 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DDZX5V6AQ-7 FAQ
1.How can I place an order for DDZX5V6AQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX5V6AQ-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 DDZX5V6AQ-7 reliable?
The price and inventory of DDZX5V6AQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX5V6AQ-7 is usually 5 days.
3.What payment methods are accepted for DDZX5V6AQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX5V6AQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX5V6AQ-7?
DDZX5V6AQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX5V6AQ-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 DDZX5V6AQ-7?
For technical support, including DDZX5V6AQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX5V6AQ-7 requirements.
6.How does Aetrix verify that DDZX5V6AQ-7 is sourced from the original manufacturer or authorized distributors?
All DDZX5V6AQ-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 DDZX5V6AQ-7 meets industry standards.
7.What is the process for return or replacement of DDZX5V6AQ-7?
All DDZX5V6AQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX5V6AQ-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 DDZX5V6AQ-7 part is unused and in its original packaging.
Return procedure for DDZX5V6AQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX5V6AQ-7 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
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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