My Inquiry
My Account
Diodes Incorporated DDZ7V5B-7
- Part No.:
- DDZ7V5B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ7V5B-7.pdf
- Description:
- DIODE ZENER 7.5V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,899
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DDZ7V5B-7 from Diodes Incorporated is a surface-mount precision Zener diode designed for voltage regulation and reference applications in power supply feedback loops, analog signal conditioning, and overvoltage protection circuits. It delivers a tightly controlled zener voltage of 7.07–7.45 V at 20 mA test current, with low dynamic impedance (6 Ω at 20 mA), maximum reverse leakage of 0.5 µA at 6.0 V, and operates across –65 °C to +150 °C.
For engineers reviewing the DDZ7V5B-7 datasheet, DDZ7V5B-7 pinout, DDZ7V5B-7 application, or DDZ7V5B-7 equivalent, this device is selected for stable low-power voltage reference needs where tight tolerance (±3.2% VZ), low temperature coefficient, and SOD123 package compatibility with automated assembly are critical design requirements.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its 7.26 V nominal zener voltage (midpoint of 7.07–7.45 V range) targets mid-range analog and power management circuits where higher-voltage references avoid noise sensitivity while remaining compatible with common 8–12 V rail systems.
The device uses alloy-42 leadframe with matte tin annealed terminals, rated for 470 mW power dissipation at 25 °C ambient on standard FR-4 PCB, and exhibits a typical temperature coefficient near +0.04 %/°C - confirming its optimized stability in the 7–8 V range per Figure 16.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.07–7.45 V at IZT = 20 mA - ensures ±3.2% tolerance for precision reference use without external trimming. |
| Zener Impedance (ZZT) | 6 Ω at 20 mA - minimizes output voltage variation under dynamic load changes in feedback networks. |
| Reverse Leakage (IR) | 0.5 µA max at VR = 6.0 V - preserves accuracy in high-impedance bias/reference nodes. |
| Power Dissipation (PD) | 470 mW at TA = 25 °C - supports continuous operation in compact PCB layouts with minimal heatsinking. |
| Operating Temperature | –65 °C to +150 °C - enables deployment in automotive under-hood, industrial control, and outdoor equipment environments. |
| Package | SOD123 - industry-standard 2-pin surface-mount outline compatible with pick-and-place and reflow processes. |
| Thermal Resistance (RθJA) | 266 °C/W (Note 7 layout) - defines thermal rise per watt, critical for reliability in enclosed enclosures. |
Pinout & Package
Package: SOD123 - molded 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 reference ground node | Connected to circuit ground or lower-potential node; forms return path during reverse-bias regulation. |
| Cathode | Zener voltage output terminal / regulated reference node | Provides stable 7.26 V reference when reverse-biased; marked by visible band on package body. |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±3.2% (7.07–7.45 V) - reduces need for post-production calibration in voltage reference designs. |
| Low dynamic impedance | 6 Ω at 20 mA - maintains regulation accuracy under transient load steps in SMPS feedback paths. |
| Automated assembly compatibility | SOD123 package with matte tin annealed terminals - ensures reliable solder wetting and IPC Class 3 process compliance. |
| High-temperature operation | Rated to +150 °C junction temperature - supports under-hood automotive and industrial motor drive applications. |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) - meets global environmental compliance mandates. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides precise 7.26 V reference to TL431-like shunt regulator IC or directly biases error amplifier input. Use Value: Enables ±1% output regulation accuracy across line/load/temperature with no external trimming required. |
Use Scenario: Biasing and scaling analog outputs from pressure, temperature, or current sensors before ADC input. IC Role / Device Role / Timing Role: Supplies stable excitation voltage or reference for ratiometric sensor interfaces and instrumentation amplifiers. Use Value: Reduces measurement drift to <0.5% full-scale error over –40 °C to +125 °C operating range. |
| Overvoltage Protection Clamp | Microcontroller Reset Circuit |
|
Use Scenario: Clamping transient surges on 5–12 V DC rails in automotive ECUs and industrial PLC I/O modules. IC Role / Device Role / Timing Role: Acts as fast-acting shunt clamp to divert excess energy before downstream ICs experience damage. Use Value: Limits peak voltage to ≤7.5 V with <100 ns response, protecting 3.3 V/5 V logic without crowbar action. |
Use Scenario: Generating clean, temperature-stable reset threshold for ARM Cortex-M or PIC microcontrollers. IC Role / Device Role / Timing Role: Sets accurate brown-out detection level (e.g., 7.26 V → scaled to 2.7 V via resistor divider). Use Value: Eliminates false resets during cold cranking (8–10 V dips) while triggering reliably below 4.5 V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 (ON Semiconductor) | Same 7.5 V nominal, ±5% tolerance (7.13–7.88 V), 15 Ω ZZT, SOT-23 package. | Higher impedance and looser tolerance reduce accuracy in precision feedback; SOT-23 requires different footprint. | Select only if board space allows SOT-23 and ±5% VZ is acceptable for cost-sensitive consumer designs. |
| MMSZ5235B (Vishay) | 7.5 V nominal, ±5% tolerance (7.13–7.88 V), 10 Ω ZZT, SOD-123 same package. | Looser tolerance and higher impedance degrade regulation stability in high-precision analog references. | Acceptable for non-critical clamping or general-purpose biasing where 7.26 V mid-point accuracy is not required. |
Compared with BZX84-C7V5 and MMSZ5235B, DDZ7V5B-7 offers superior voltage accuracy (±3.2% vs. ±5%), lower dynamic impedance (6 Ω vs. 10–15 Ω), and tighter thermal coefficient - making it preferred for automotive-grade feedback and industrial sensor references demanding long-term stability.
Availability
DDZ7V5B-7 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and microcontroller reset systems requiring stable component supply with full traceability and lifecycle support.
Supply support for DDZ7V5B-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 IATF16949 certified facilities.
The DDZ series is part of Diodes' precision Zener diode product line, engineered specifically for stable voltage reference and regulation in space-constrained, thermally demanding applications where tight VZ tolerance and low ZZT are essential.
FAQ
What is the maximum continuous power dissipation for DDZ7V5B-7 at 75 °C ambient?
At 75 °C ambient temperature, DDZ7V5B-7 supports 500 mW continuous power dissipation per Note 6 in DS30407 Rev. 21–2. This rating assumes proper PCB copper area and thermal relief design per the recommended pad layout, enabling reliable operation in elevated-temperature environments such as automotive engine control units.
Does DDZ7V5B-7 have automotive qualification?
No - DDZ7V5B-7 is the commercial-grade variant. The automotive-qualified version is DDZ7V5BQ-7, which carries AEC-Q101 qualification, PPAP capability, and is manufactured in IATF16949-certified facilities. DDZ7V5B-7 is intended for industrial and consumer applications where extended temperature range and reliability are required but formal automotive certification is not mandated.
How is polarity identified on the DDZ7V5B-7 SOD123 package?
Polarity is indicated by a cathode band - a visible dark stripe near one end of the SOD123 body. The terminal adjacent to the band is the cathode (zener output/reference node); the opposite terminal is the anode (ground/reference return). This marking aligns with JEDEC standard SOD123 orientation and matches the "Cathode Band" terminal connection specification in the datasheet.
What is the typical temperature coefficient of DDZ7V5B-7 near room temperature?
Based on Figure 16 in DS30407, the typical temperature coefficient for DDZ7V5B-7 (7.26 V nominal) is approximately +0.04 %/°C. This positive coefficient indicates VZ increases slightly with rising temperature - a characteristic optimized for stability in the 7–8 V range and enables predictable compensation in reference circuits.
DDZ7V5B-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:
- ±2.5%
- 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
DDZ7V5B-7 FAQ
1.How can I place an order for DDZ7V5B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ7V5B-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 DDZ7V5B-7 reliable?
The price and inventory of DDZ7V5B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ7V5B-7 is usually 5 days.
3.What payment methods are accepted for DDZ7V5B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ7V5B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ7V5B-7?
DDZ7V5B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ7V5B-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 DDZ7V5B-7?
For technical support, including DDZ7V5B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ7V5B-7 requirements.
6.How does Aetrix verify that DDZ7V5B-7 is sourced from the original manufacturer or authorized distributors?
All DDZ7V5B-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 DDZ7V5B-7 meets industry standards.
7.What is the process for return or replacement of DDZ7V5B-7?
All DDZ7V5B-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ7V5B-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 DDZ7V5B-7 part is unused and in its original packaging.
Return procedure for DDZ7V5B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ7V5B-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…
