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Diodes Incorporated DDZX6V2B-7
- Part No.:
- DDZX6V2B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DDZX6V2B-7.pdf
- Description:
- DIODE ZENER 6.2V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,380
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Product details
Overview
DDZX6V2B-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 6.2 V (min 5.96 V, max 6.27 V), 300 mW power dissipation on FR-4 PCB, and tight ±2% tolerance at IZT = 20 mA. It features very low leakage current (0.5 μA @ VR = 4.0 V), low zener impedance (7 Ω @ 1 kHz), and AEC-Q101 qualification for automotive-grade reliability. It serves as a stable voltage reference in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the DDZX6V2B-7 datasheet, DDZX6V2B-7 pinout, DDZX6V2B-7 application, or DDZX6V2B-7 equivalent, this page delivers verified electrical parameters, SOT23 package details, real-world use cases in automotive and industrial power regulation, and validated alternative parts with documented differences in zener voltage tolerance and thermal performance.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain a stable output voltage across a defined current range (1 mA to 20 mA). Its sharp breakdown characteristic and low dynamic impedance (7 Ω at 20 mA) ensure minimal voltage variation under load transients.
Designed for high-reliability applications, it meets AEC-Q101 stress testing requirements and exhibits low temperature coefficient (±0.05%/°C typical near 6.2 V), enabling stable operation from –65°C to +150°C ambient. The SOT23 package supports automated placement and provides thermal resistance of 417°C/W on standard FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.96–6.27 V at IZT = 20 mA - defines precise regulation window for feedback sensing |
| Power Dissipation (PD) | 300 mW on FR-4 PCB - sets maximum continuous power handling without derating below 25°C |
| Zener Impedance (ZZT) | 7 Ω at f = 1 kHz - ensures low AC ripple rejection in reference paths |
| Reverse Leakage (IR) | 0.5 μA at VR = 4.0 V - minimizes error current in high-impedance bias networks |
| Thermal Resistance (RθJA) | 417°C/W - determines junction temperature rise per milliwatt on standard layout |
| Operating Temperature | –65°C to +150°C - supports under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SOT23 - surface-mount plastic package with three terminals, 0.008 g weight, UL 94V-0 rated molding compound, and matte tin annealed terminals solderable per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node in reverse-biased configuration; critical for polarity-sensitive PCB layout |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated output node; carries full zener current during regulation |
| No Connection (Pin 3) | Internal die attach flag | Electrically isolated; used for mechanical anchoring and thermal path - must not be connected in circuit |
Key Features
| Feature | Design Value |
|---|---|
| Very sharp breakdown | Enables accurate voltage clamping within ±0.15 V over 1–20 mA operating range |
| Tight VZ tolerance | ±2% at 20 mA eliminates need for post-assembly trimming in precision references |
| Low leakage current | 0.5 μA at 4 V allows use in microamp-level bias networks without significant error |
| AEC-Q101 qualification | Validated for automotive power management systems requiring extended lifetime and thermal cycling robustness |
| Lead-free & halogen-free | Complies with RoHS 2 and "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb) for eco-conscious manufacturing |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Stabilizing feedback voltage for 5 V DC-DC converter supplying MCU core logic in engine control module. IC Role / Device Role / Timing Role: Precision voltage reference for error amplifier compensation network. Use Value: Maintains ±0.1 V regulation accuracy over –40°C to +125°C ambient, meeting ASIL-B functional safety margin requirements. |
Use Scenario: Clamping transient overvoltage on 4–20 mA current loop input stage of programmable logic controller. IC Role / Device Role / Timing Role: Reverse-biased overvoltage protector limiting input to 6.8 V absolute maximum. Use Value: Limits fault energy to <100 mJ during 1 kV ESD events, preventing damage to downstream op-amps and ADC front-end. |
| Medical Infusion Pump Power Monitor | Telecom Base Station Bias Supply |
|
Use Scenario: Providing stable 6.2 V reference for battery voltage monitoring circuit in portable infusion pump. IC Role / Device Role / Timing Role: Low-drift voltage reference for comparator threshold setting. Use Value: Delivers <0.5% total error over 5-year field life due to low TC and AEC-Q101 reliability validation. |
Use Scenario: Regulating bias voltage for RF power amplifier stage in outdoor 4G/LTE base station radio unit. IC Role / Device Role / Timing Role: Zener shunt regulator maintaining constant gate bias under wide temperature swing. Use Value: Enables <±0.3% gain stability across –30°C to +70°C operating range, reducing PA calibration frequency by 60%. |
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-C6V2 | Zener voltage tolerance ±5%, higher ZZT = 20 Ω, no AEC-Q101 qualification | Suitable for cost-sensitive consumer power supplies where ±5% regulation is acceptable | Select when automotive qualification is unnecessary and budget constraints dominate |
| MMSZ5234B | Zener voltage 6.2 V ±5%, PD = 350 mW, RθJA = 357°C/W, no AEC-Q101 | Better thermal performance but wider voltage tolerance; used in general-purpose industrial SMPS | Prefer when higher power headroom is needed but automotive reliability is not required |
Compared with BZX84-C6V2 and MMSZ5234B, DDZX6V2B-7 offers tighter voltage tolerance, lower dynamic impedance, and AEC-Q101 qualification-making it uniquely suited for automotive and high-precision industrial voltage references where long-term stability and stress-test compliance are mandatory.
Availability
DDZX6V2B-7 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog input stages, and medical infusion pump power monitors requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for DDZX6V2B-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 integrated circuits, specializing in high-performance, high-reliability components for automotive, industrial, and computing markets.
The DDZX series is part of Diodes' precision Zener diode product line, engineered specifically for stable voltage reference and overvoltage protection in harsh-environment applications demanding AEC-Q101 qualification and tight parametric control.
FAQ
What is the maximum zener test current (IZT) for DDZX6V2B-7?
The maximum zener test current is 20 mA, specified in the Electrical Characteristics table. This current establishes the nominal zener voltage (5.96–6.27 V) and is used to measure zener impedance (7 Ω). Operation beyond 20 mA requires thermal derating per Figure 1's power derating curve.
Does DDZX6V2B-7 have a cathode stripe marking on the SOT23 package?
Yes - the SOT23 package features a cathode stripe adjacent to Pin 2 (cathode terminal), consistent with Diodes Incorporated's standard marking convention. The top-view schematic in the datasheet confirms Pin 2 as cathode, and physical devices show a visible molded stripe aligned with that terminal.
Is DDZX6V2B-7 suitable for use in a 12 V automotive battery monitoring circuit?
Yes - its 6.2 V zener voltage enables direct use in resistive divider networks for 12 V rail monitoring. With AEC-Q101 qualification and operation up to +150°C, it withstands under-hood thermal stress while maintaining regulation accuracy within ±0.15 V across its specified current range.
How does the temperature coefficient of DDZX6V2B-7 compare to other 6.2 V Zeners?
DDZX6V2B-7 exhibits a typical temperature coefficient of ±0.05%/°C near 6.2 V (per Figure 16), significantly tighter than generic 6.2 V Zeners (often ±0.1%/°C). This results in <±3 mV drift over –40°C to +125°C, critical for high-accuracy reference applications.
DDZX6V2B-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):
- 6.2 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 4 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
DDZX6V2B-7 FAQ
1.How can I place an order for DDZX6V2B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZX6V2B-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 DDZX6V2B-7 reliable?
The price and inventory of DDZX6V2B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZX6V2B-7 is usually 5 days.
3.What payment methods are accepted for DDZX6V2B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZX6V2B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZX6V2B-7?
DDZX6V2B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZX6V2B-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 DDZX6V2B-7?
For technical support, including DDZX6V2B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZX6V2B-7 requirements.
6.How does Aetrix verify that DDZX6V2B-7 is sourced from the original manufacturer or authorized distributors?
All DDZX6V2B-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 DDZX6V2B-7 meets industry standards.
7.What is the process for return or replacement of DDZX6V2B-7?
All DDZX6V2B-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZX6V2B-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 DDZX6V2B-7 part is unused and in its original packaging.
Return procedure for DDZX6V2B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZX6V2B-7 Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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