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Diodes Incorporated DFLZ8V2Q-7
- Part No.:
- DFLZ8V2Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLZ8V2Q-7.pdf
- Description:
- DIODE ZENER 8.2V 1W POWERDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:2,730
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Product details
Overview
DFLZ8V2Q-7 from Diodes Incorporated is a 1.0W surface-mount power Zener diode in PowerDI123 package, rated for 8.2V nominal zener voltage at 100mA test current, with 2Ω maximum zener impedance and ±0.03%/°C to +0.08%/°C temperature coefficient. It delivers stable voltage regulation in automotive-grade power supply rails and overvoltage protection circuits.
For engineers reviewing the DFLZ8V2Q-7 datasheet, DFLZ8V2Q-7 pinout, DFLZ8V2Q-7 application, or DFLZ8V2Q-7 equivalent, key selection criteria include its AEC-Q qualified reliability, 110°C/W thermal resistance (junction-to-ambient), 9°C/W junction-to-solder-point thermal resistance, and cathode-band polarity marking for unambiguous PCB layout.
Technical Context
This Zener diode operates in reverse breakdown mode to clamp voltage at 8.2V with tight tolerance (7.7–8.7V) and low dynamic impedance (1–2Ω typical at 100mA), enabling precise reference and protection functions in DC-DC feedback paths and I/O line conditioning. Its PowerDI123 package provides 1W dissipation on FR-4 PCB with JEDEC-compliant thermal performance.
Qualified per AEC-Q standards for high-reliability automotive applications, it features halogen- and antimony-free "Green" molding compound (UL 94V-0), matte tin annealed terminals, and moisture sensitivity level 1 - supporting lead-free reflow without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal at 100 mA; ensures accurate clamping in 8–9V rail monitoring and regulation |
| Zener Impedance (ZZT) | ≤2 Ω max at 100 mA; minimizes output voltage variation under load transients |
| Power Dissipation (PD) | 1.0 W on FR-4 PCB; supports sustained operation in compact power management layouts |
| Thermal Resistance (RθJA) | 110 °C/W; defines safe ambient temperature limit for continuous 1W operation |
| Temperature Coefficient (TC) | +0.03 to +0.08 %/°C; enables predictable drift compensation in temperature-stable references |
| Reverse Leakage (IR) | ≤5 µA at 6.56 V; guarantees low quiescent current in standby-mode protection circuits |
| Forward Voltage (VF) | 1.2 V at 200 mA; allows use as bidirectional clamp when combined with series resistor |
Pinout & Package
Package: PowerDI123 - surface-mount, single-cathode-band marking, 3-pin outline (anode/cathode/tab), 0.01 g weight, UL 94V-0 molded plastic housing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Cathode | Marked terminal; connects to regulated/high-side node in shunt regulation |
| Opposite End | Anode | Connects to ground or return path; completes reverse-bias conduction path |
| Center Tab (Exposed Pad) | Cathode (internally tied) | Provides primary thermal path to PCB; must be soldered to copper pour for RθJS = 9°C/W |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q Qualified Reliability | Validated for automotive-grade operation across -55°C to +150°C junction range |
| 1W Power Handling on Standard PCB | No heatsink required for 1W dissipation using 1"x1" 2 oz. Cu pad on FR-4 |
| Low Zener Impedance | 1–2Ω typical at 100mA enables <±10mV regulation shift under 100mA load steps |
| Halogen- & Antimony-Free "Green" Construction | <900ppm Br/Cl, <1000ppm Sb; meets EU RoHS 3 and automotive environmental compliance |
| Cathode Band Polarity Marking | Unambiguous visual identification prevents reverse-mounting during automated assembly |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Clamping 12V battery-supplied microcontroller I/O lines against load-dump transients up to 35V. IC Role / Device Role / Timing Role: Shunt overvoltage protector placed between signal line and ground. Use Value: Limits transient voltage to ≤8.7V with <5µA leakage at 6.56V, preserving ADC input integrity. |
Use Scenario: Protecting 4–20mA current-loop receiver inputs from ESD and surge events. IC Role / Device Role / Timing Role: Bidirectional transient suppressor (with series resistor) on analog front-end. Use Value: 1W rating sustains 100ms surges while maintaining <2Ω dynamic impedance for fast response. |
| DC-DC Converter Feedback Reference | USB-C Power Delivery (PD) VBUS Monitoring |
|
Use Scenario: Providing stable 8.2V reference for optocoupler-based isolated feedback in 24V→5V flyback converters. IC Role / Device Role / Timing Role: Precision voltage reference in secondary-side regulation loop. Use Value: ±0.05% TC stability over -40°C to +125°C ensures <±0.5% output voltage drift. |
Use Scenario: Monitoring VBUS voltage in USB-C PD sink designs to trigger overvoltage shutdown at 8.7V. IC Role / Device Role / Timing Role: Fast-response voltage threshold detector with defined trip window. Use Value: 7.7–8.7V tolerance band enables reliable detection of >8.5V faults without false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2LT1G | 0.3W rating, SOT-23 package, 15Ω ZZT, wider VZ tolerance (7.79–8.61V) | Limited to low-power signal-level clamping; unsuitable for >300mW continuous dissipation | Select for space-constrained logic-level protection where thermal budget is <300mW |
| MMSZ5236BS-7-F | 0.5W rating, SOD-123 package, 7Ω ZZT, tighter VZ tolerance (7.99–8.41V) | Lower power handling and higher impedance reduce effectiveness in power rail clamping | Prefer for precision reference in low-current bias networks requiring <1% VZ spread |
Compared with BZX84-C8V2LT1G and MMSZ5236BS-7-F, DFLZ8V2Q-7 uniquely supports 1W continuous dissipation with sub-2Ω impedance and AEC-Q qualification - making it the only choice for automotive power rail protection and industrial 1W-class regulation.
Availability
DFLZ8V2Q-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC analog input stages, and DC-DC converter feedback networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for DFLZ8V2Q-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.
DFLZ8V2Q-7 belongs to the PowerDI123 Zener diode product line, engineered specifically for AEC-Q-compliant voltage regulation and transient suppression in harsh-environment power systems.
FAQ
What is the maximum steady-state power dissipation for DFLZ8V2Q-7 on a standard PCB?
DFLZ8V2Q-7 delivers 1.0W continuous power dissipation when mounted on a 1.5" × 1.5" FR-4 PCB with 2 oz. copper and a 1" × 1" thermal pad per Diodes' DS30464 test conditions. Derating begins above +25°C ambient per Figure 1, reaching zero dissipation at +150°C.
How is polarity identified on the PowerDI123 package?
Polarity is marked by a visible cathode band at one end of the PowerDI123 package. The banded end is the cathode; the opposite end is the anode; the center exposed tab is internally connected to the cathode and serves as the primary thermal path to the PCB.
Is DFLZ8V2Q-7 suitable for use in non-automotive industrial applications?
Yes - while AEC-Q qualified, DFLZ8V2Q-7 meets JEDEC reliability standards and operates across -55°C to +150°C. Its 1W rating, low ZZT, and Green material set make it equally appropriate for industrial motor drives, power supplies, and instrumentation where robustness and regulatory compliance are required.
What is the recommended PCB pad layout for optimal thermal performance?
Diodes specifies a 1" × 1" copper pad connected to the center tab for RθJS = 9°C/W. Full layout dimensions (X=1.05mm, X1=2.40mm, X2=4.10mm, Y=Y1=1.50mm, G=0.65mm) are published in DS30464 Section 4 and on diodes.com/package-outlines.html.
DFLZ8V2Q-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±2.5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 1 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 27 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
DFLZ8V2Q-7 FAQ
1.How can I place an order for DFLZ8V2Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLZ8V2Q-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 DFLZ8V2Q-7 reliable?
The price and inventory of DFLZ8V2Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLZ8V2Q-7 is usually 5 days.
3.What payment methods are accepted for DFLZ8V2Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLZ8V2Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLZ8V2Q-7?
DFLZ8V2Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLZ8V2Q-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 DFLZ8V2Q-7?
For technical support, including DFLZ8V2Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLZ8V2Q-7 requirements.
6.How does Aetrix verify that DFLZ8V2Q-7 is sourced from the original manufacturer or authorized distributors?
All DFLZ8V2Q-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 DFLZ8V2Q-7 meets industry standards.
7.What is the process for return or replacement of DFLZ8V2Q-7?
All DFLZ8V2Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLZ8V2Q-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 DFLZ8V2Q-7 part is unused and in its original packaging.
Return procedure for DFLZ8V2Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DFLZ8V2Q-7 Tags
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