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Diodes Incorporated DDZ7V5C-7
- Part No.:
- DDZ7V5C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ7V5C-7.pdf
- Description:
- DIODE ZENER 7.5V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,880
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Product details
Overview
DDZ7V5C-7 from Diodes Incorporated is a surface-mount precision Zener diode optimized for voltage regulation and reference applications in space-constrained PCBs. It delivers a tightly controlled zener voltage range of 7.29 V to 7.67 V at 20 mA test current, with maximum zener impedance of 6 Ω at 20 mA and 120 Ω at 0.5 mA, and reverse leakage current ≤0.5 µA at 6.0 V - used in analog sensor biasing, ADC reference stabilization, and power supply feedback loops.
For engineers reviewing the DDZ7V5C-7 datasheet, DDZ7V5C-7 pinout, DDZ7V5C-7 application, or DDZ7V5C-7 equivalent, key selection criteria include its ±2.5% VZ tolerance, SOD123 package thermal resistance (425 °C/W on minimal pad), low temperature coefficient (~0.05%/°C near 7.5 V), and automotive-grade availability via Q-suffix variants.
Technical Context
This device operates as a two-terminal, reverse-biased silicon Zener diode with sharp breakdown knee and low dynamic impedance across its rated current range. Its design targets stable DC voltage reference generation rather than transient suppression or signal clamping.
The SOD123 package enables automated placement while maintaining thermal performance suitable for low-power (<500 mW) linear regulation tasks. Its cathode-band polarity marking and matte tin–annealed Alloy 42 leadframe ensure reliable solderability and RoHS/Green compliance without halogen or antimony additives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage Range | 7.29 V to 7.67 V at IZT = 20 mA - defines usable regulation window under nominal bias |
| Zener Impedance | 6 Ω at IZT = 20 mA; 120 Ω at IZK = 0.5 mA - determines output voltage stability under load variation |
| Reverse Leakage Current | ≤0.5 µA at VR = 6.0 V - ensures minimal error current in high-impedance reference nodes |
| Power Dissipation | 294 mW at TA = +25°C on minimal pad layout - sets max continuous bias current limit (~39 mA at 7.5 V) |
| Thermal Resistance | 425 °C/W junction-to-ambient (minimal pad) - requires careful thermal pad design for sustained operation |
| Temperature Coefficient | ~0.05 %/°C near 7.5 V (from Fig. 16) - enables predictable drift compensation in precision references |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking; dimensions: 1.55 mm width × 2.65 mm length × 1.05 mm height; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input voltage source and load; maintains stable voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±2.5% over 7.29–7.67 V range at 20 mA - reduces calibration burden in precision analog circuits |
| Low dynamic impedance | 6 Ω at 20 mA - minimizes output voltage deviation under changing load currents |
| Automated assembly compatibility | SOD123 footprint with JEDEC-standard pad layout - supports high-yield pick-and-place and reflow |
| Green and RoHS-compliant construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) - meets automotive and industrial environmental mandates |
Applications
| Industrial Sensor Signal Conditioning | ADC Reference Voltage Stabilization |
|---|---|
|
Use Scenario: Biasing bridge-based pressure or temperature sensors in factory automation modules. IC Role / Device Role / Timing Role: Provides stable excitation voltage and ratiometric reference for instrumentation amplifiers and sigma-delta ADCs. Use Value: Enables <±0.1% full-scale measurement accuracy by minimizing VREF drift across –40°C to +85°C ambient. |
Use Scenario: Supplying reference voltage to 16-bit SAR ADCs in programmable logic controllers. IC Role / Device Role / Timing Role: Shunt-connected Zener acting as low-noise, low-drift voltage reference for ADC internal conversion circuitry. Use Value: Maintains effective resolution >15.5 bits by limiting reference voltage variation to <300 µV over operating temperature. |
| DC-DC Converter Feedback Network | Microcontroller Reset Circuitry |
|
Use Scenario: Setting output voltage in isolated flyback converters for industrial IoT gateways. IC Role / Device Role / Timing Role: Precision shunt element in optocoupler-coupled feedback loop controlling primary-side PWM duty cycle. Use Value: Achieves ±1.5% output regulation across line/load/temperature by stabilizing TL431 reference node against supply ripple. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M4 microcontrollers in motor drives. IC Role / Device Role / Timing Role: Zener-clamped voltage divider feeding RC delay network to MCU reset pin. Use Value: Guarantees deterministic reset assertion at 7.5 V ±2% during brown-out events, preventing firmware corruption. |
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-C7V5 (ON Semiconductor) | VZ = 7.2–7.8 V (±4%), ZZT = 15 Ω @ 5 mA, SOT-23 package | Higher impedance and looser tolerance; smaller footprint but higher RθJA (~600 °C/W) | Prefer when board area is critical and ±4% regulation is acceptable |
| MMSZ5235B (Vishay) | VZ = 7.15–7.45 V (±5%), ZZT = 10 Ω @ 20 mA, SOD-123 package | Narrower VZ range but wider tolerance; identical package and thermal profile | Choose when cost sensitivity outweighs need for tight 7.5 V centering |
Compared with BZX84-C7V5 and MMSZ5235B, DDZ7V5C-7 offers superior VZ centering (7.48 V nominal), lowest impedance at rated current, and tighter tolerance - making it optimal for applications demanding minimal post-calibration adjustment and low-output-impedance references.
Availability
DDZ7V5C-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, ADC reference stabilization, and DC-DC converter feedback networks requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for DDZ7V5C-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 DDZ series belongs to Diodes' precision Zener diode product line, engineered specifically for high-stability voltage reference and regulation in industrial, automotive, and communications equipment where tight VZ tolerance and low temperature coefficient are critical.
FAQ
What is the maximum continuous power dissipation for DDZ7V5C-7 at 75°C ambient?
At TL = +75°C, the maximum power dissipation is 500 mW per the datasheet's Note 6. This rating assumes proper heat sinking via a 1 in² copper pad on FR-4 board. Derating begins above 75°C at 3.79 mW/°C based on RθJL = 132 °C/W.
Is DDZ7V5C-7 suitable for automotive applications?
Yes - the automotive-qualified variant is DDZ7V5CQ-7, which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities. The standard DDZ7V5C-7 is commercial grade and not certified for automotive use.
How does the SOD123 package affect thermal performance compared to SOD-323?
The SOD123 package has larger copper exposure and lower thermal resistance (RθJA = 425 °C/W on minimal pad vs. ~600 °C/W for SOD-323), enabling ~40% higher power handling at the same ambient temperature - critical for stable Zener operation in unventilated enclosures.
What is the typical temperature coefficient of DDZ7V5C-7 near its nominal zener voltage?
Based on Figure 16 in DS30407 Rev. 21-2, the temperature coefficient is approximately +0.05 %/°C at 7.5 V, indicating a positive, low-drift characteristic ideal for compensated reference designs where VZ must track other temperature-sensitive components.
DDZ7V5C-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6 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:
- SOD-123
DDZ7V5C-7 FAQ
1.How can I place an order for DDZ7V5C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ7V5C-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 DDZ7V5C-7 reliable?
The price and inventory of DDZ7V5C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ7V5C-7 is usually 5 days.
3.What payment methods are accepted for DDZ7V5C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ7V5C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ7V5C-7?
DDZ7V5C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ7V5C-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 DDZ7V5C-7?
For technical support, including DDZ7V5C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ7V5C-7 requirements.
6.How does Aetrix verify that DDZ7V5C-7 is sourced from the original manufacturer or authorized distributors?
All DDZ7V5C-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 DDZ7V5C-7 meets industry standards.
7.What is the process for return or replacement of DDZ7V5C-7?
All DDZ7V5C-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ7V5C-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 DDZ7V5C-7 part is unused and in its original packaging.
Return procedure for DDZ7V5C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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