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Diodes Incorporated DFLZ6V2-7
- Part No.:
- DFLZ6V2-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLZ6V2-7.pdf
- Description:
- DIODE ZENER 6.2V 1W POWERDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:118,107
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Product details
Overview
DFLZ6V2-7 from Diodes Incorporated is a 1.0W surface-mount power Zener diode in PowerDI123 package, delivering nominal 6.2V zener voltage at 100mA test current, with 1Ω typical zener impedance and ±0.01%/°C temperature coefficient. It provides precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation for industrial power converters.
For engineers reviewing the DFLZ6V2-7 datasheet, DFLZ6V2-7 pinout, DFLZ6V2-7 application, or DFLZ6V2-7 equivalent, key selection criteria include its 6.2V nominal zener voltage, 1W power dissipation on FR-4 PCB, 110°C/W thermal resistance junction-to-ambient, cathode-band polarity marking, and automotive-qualified variant availability (DFLZ6V2Q-7).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and line conditions. Its low 1Ω typical zener impedance ensures minimal voltage deviation under dynamic current changes, while the ±0.01%/°C temperature coefficient enables high-stability references over -55°C to +150°C operating range.
Designed for surface-mount assembly on standard FR-4 PCBs, it achieves 1W power dissipation using a 1"x1" 2 oz. copper pad layout. The PowerDI123 package features matte tin–annealed copper leadframe terminals, UL 94V-0 molded plastic housing, and JEDEC-qualified reliability per AEC-Q standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2V nominal at IZT = 100mA; maintains regulation within 5.8–6.6V tolerance band |
| Power Dissipation (PD) | 1.0W on FR-4 PCB with 1"x1" 2 oz. Cu pad; defines maximum continuous steady-state power handling |
| Zener Impedance (ZZT) | 1Ω typical at 100mA; ensures <10mV output variation per 10mA load change |
| Reverse Current (IR) | 5µA max at VR = 5V; guarantees low leakage in standby or high-impedance bias networks |
| Temp. Coefficient (αVZ) | ±0.01%/°C at 6.2V; enables <±0.15V drift over full -55°C to +150°C operating range |
| Thermal Resistance (RθJA) | 110°C/W; determines junction temperature rise above ambient under 1W load |
| Operating Temperature | -55°C to +150°C; supports deployment in under-hood automotive, industrial motor drives, and outdoor power systems |
Pinout & Package
Package: PowerDI123 - surface-mount, single-ended, cathode-band marked, 3-pin outline (anode/cathode/thermal tab integrated into cathode lead). Dimensions: 3.70mm × 1.78mm × 1.00mm (L×W×H), weight ≈0.01g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Breakdown terminal | Connected to regulated output node; carries full reverse current during regulation |
| Anode | Reference terminal | Connected to ground or lower-potential rail; completes reverse-bias path |
| Exposed Cathode Tab | Thermal & electrical connection | Serves as primary heat sink interface and low-inductance cathode return path |
Key Features
| Feature | Design Value |
|---|---|
| 1W power rating on standard FR-4 | Enables direct replacement of through-hole 1N4735A without board redesign or thermal derating penalties |
| JEDEC-qualified reliability | Validated to AEC-Q stress profiles for mission-critical automotive subsystems and industrial control units |
| Halogen- and antimony-free "Green" compound | Meets RoHS 3 (2015/863/EU) with Br+Cl <1500ppm and Sb <1000ppm; supports eco-compliant manufacturing |
| Cathode-band polarity marking | Unambiguous orientation identification under automated optical inspection (AOI) and manual assembly |
| Matte tin–annealed leadframe | Ensures MIL-STD-202-compliant solderability and eliminates intermetallic growth risks in reflow profiles |
Applications
| Industrial Power Supply Feedback | Automotive ECU Voltage Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converter feedback networks. IC Role / Device Role / Timing Role: Zener diode provides precise 6.2V reference to optocoupler input, closing secondary-side regulation loop. Use Value: Low 1Ω zener impedance minimizes feedback error under transient load steps, improving output voltage accuracy to ±1.5%. |
Use Scenario: Generating stable bias voltage for microcontroller reset circuitry in engine control units. IC Role / Device Role / Timing Role: Acts as temperature-stable threshold detector triggering POR (power-on reset) logic at 6.2V. Use Value: ±0.01%/°C tempco ensures reliable reset assertion across -40°C to +125°C ambient, eliminating cold-start failures. |
| Overvoltage Clamp for CAN Transceivers | Programmable Current Source Biasing |
Use Scenario: Protecting ISO 11898-2 compliant CAN bus transceivers from load-dump surges. IC Role / Device Role / Timing Role: Clamps bus voltage to 6.2V during 40V/100ms transients, diverting excess energy to ground. Use Value: 1W rating sustains clamping without thermal runaway; 5µA max leakage avoids signal distortion at idle. |
Use Scenario: Setting reference current for LED driver ICs requiring precise analog dimming control. IC Role / Device Role / Timing Role: Provides fixed 6.2V reference to current-sense resistor network in constant-current regulator. Use Value: Tight 5.8–6.6V tolerance ensures ±3% current accuracy across production lots and temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V2 (Diodes Inc.) | 0.3W SOT-23 package; 10Ω typical ZZT; ±2% VZ tolerance | Lower power handling limits use to low-current biasing only; unsuitable for >100mA regulation | Select when board space is constrained and power demand ≤300mW; verify thermal margin with RθJA = 300°C/W |
| MMSZ5234B (ON Semiconductor) | 0.5W SOD-123; 7Ω typical ZZT; ±5% VZ tolerance; no AEC-Q qualification | Lacks automotive reliability validation; higher impedance reduces regulation precision under load transients | Acceptable for commercial-grade consumer power supplies where cost is prioritized over stability and qualification |
Compared with BZX84-C6V2 and MMSZ5234B, DFLZ6V2-7 delivers superior power capability (1W vs. ≤0.5W), lower dynamic impedance (1Ω vs. ≥7Ω), tighter voltage tolerance (±6.5% vs. ±5% or ±2%), and automotive-grade reliability-making it optimal for industrial and automotive voltage reference designs demanding long-term stability.
Availability
DFLZ6V2-7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, and programmable LED drivers requiring stable component supply and long-lifecycle support.
Supply support for DFLZ6V2-7 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.
The DFLZ series targets high-power, high-stability Zener regulation in compact surface-mount packages, designed specifically for automotive-qualified and industrial-grade power management applications where thermal robustness and long-term voltage stability are critical.
FAQ
What is the maximum reverse voltage (VR) at which DFLZ6V2-7 guarantees ≤5µA leakage?
DFLZ6V2-7 guarantees ≤5µA reverse current at VR = 5V, as specified in the Electrical Characteristics table. This value is measured under DC conditions at 25°C ambient and defines the upper limit of usable reverse bias before significant leakage compromises reference accuracy or standby power.
Can DFLZ6V2-7 be used in place of a 1N4735A in existing through-hole designs?
No-DFLZ6V2-7 is a surface-mount PowerDI123 device and not a drop-in mechanical replacement for the axial-lead 1N4735A. However, its 6.2V rating, 1W rating, and 1Ω zener impedance make it a functional upgrade for new SMT designs targeting higher density and improved thermal performance on FR-4 boards.
Does DFLZ6V2-7 require a heatsink for 1W operation?
No external heatsink is required. At 1W dissipation on a 1"x1", 2 oz. copper FR-4 pad, junction temperature rise is calculated as 110°C/W × 1W = 110°C above ambient. With TJMAX = 150°C, this allows safe operation up to +40°C ambient-sufficient for most enclosed industrial environments without forced airflow.
Is there an automotive-qualified version of DFLZ6V2-7?
Yes-the DFLZ6V2Q-7 is the AEC-Q200 qualified variant, manufactured under automotive-specific process controls and tested to extended temperature and reliability requirements. It shares identical electrical specifications but carries separate part numbering and qualification documentation.
DFLZ6V2-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±6%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
DFLZ6V2-7 FAQ
1.How can I place an order for DFLZ6V2-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLZ6V2-7 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 DFLZ6V2-7 reliable?
The price and inventory of DFLZ6V2-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLZ6V2-7 is usually 5 days.
3.What payment methods are accepted for DFLZ6V2-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLZ6V2-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLZ6V2-7?
DFLZ6V2-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLZ6V2-7 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 DFLZ6V2-7?
For technical support, including DFLZ6V2-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLZ6V2-7 requirements.
6.How does Aetrix verify that DFLZ6V2-7 is sourced from the original manufacturer or authorized distributors?
All DFLZ6V2-7 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 DFLZ6V2-7 meets industry standards.
7.What is the process for return or replacement of DFLZ6V2-7?
All DFLZ6V2-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLZ6V2-7, 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 DFLZ6V2-7 part is unused and in its original packaging.
Return procedure for DFLZ6V2-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DFLZ6V2-7 Tags
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