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Diodes Incorporated DFLZ7V5Q-7
- Part No.:
- DFLZ7V5Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- POWERDI®123
- Datasheet:
-
DFLZ7V5Q-7.pdf
- Description:
- DIODE ZENER 7.5V 1W POWERDI 123
- Quantity:
- Payment:
- Shipping:
Inventory:4,549
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Product details
Overview
DFLZ7V5Q-7 from Diodes Incorporated is a 1.0W surface-mount power Zener diode in PowerDI123 package, with nominal Zener voltage 7.5V (min 7.0V, max 7.9V) at 100mA test current, dynamic impedance 1Ω max, and reverse leakage ≤5µA at 5.3V. It is AEC-Q101 qualified for automotive applications and features an exposed thermal pad for enhanced heat dissipation in voltage regulation and overvoltage protection circuits.
For engineers reviewing the DFLZ7V5Q-7 datasheet, DFLZ7V5Q-7 pinout, DFLZ7V5Q-7 application, or DFLZ7V5Q-7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (RθJS = 9°C/W), surge capability via patented interlocking clip, RoHS/halogen-free compliance, and AEC-Q101 qualification status for harsh-environment designs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its low dynamic impedance (1Ω typ, 2Ω max at IZT = 100mA) ensures tight regulation, while the PowerDI123 package's exposed cathode pad enables efficient heat transfer to PCB copper.
Designed for high-reliability automotive systems, it meets AEC-Q101 stress testing requirements including temperature cycling, HTRB, and surge robustness per US Patent #7,095,113. The device exhibits a near-zero Zener voltage temperature coefficient (0 to +0.07%/°C) across its operating range, minimizing drift in precision biasing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5V nominal (7.0–7.9V range at IZT = 100mA); defines regulated output voltage in shunt regulator circuits |
| Power Dissipation (PD) | 1.0W on FR-4 PCB (1.5" × 1.5", 2 oz Cu); sets maximum continuous power handling before thermal derating |
| Zener Impedance (ZZT) | 1Ω typical, 2Ω maximum at IZT = 100mA; determines regulation stiffness and AC ripple rejection |
| Thermal Resistance (RθJS) | 9°C/W junction-to-solder point; enables accurate thermal design when mounted to copper pour |
| Reverse Leakage (IR) | ≤5µA at VR = 5.3V; ensures minimal quiescent current in standby or low-power modes |
| Temp Coefficient (TC) | 0 to +0.07%/°C; supports stable reference performance over -55°C to +150°C ambient range |
| Forward Voltage (VF) | 1.2V at IF = 200mA; relevant for polarity-check or dual-function clamp/rectifier use cases |
Pinout & Package
Package: PowerDI123 - surface-mount, molded plastic case with large exposed cathode pad for thermal and electrical connection; UL 94V-0 rated; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in shunt regulation; forms return path for Zener current |
| Cathode | Zener breakdown terminal / thermal interface | Exposed metal pad soldered to PCB copper; carries full Zener current and dissipates heat directly into board |
| Cathode Band | Polarity identification marker | Visible band on package top surface indicating cathode; critical for correct orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| Patented interlocking clip structure | Enables high-surge current capability (per US Patent #7,095,113) without bond wire failure |
| AEC-Q101 qualification | Validated for automotive under-hood and powertrain applications requiring extended temperature and reliability |
| Lead-free, halogen- and antimony-free "Green" construction | Complies with RoHS 2/3 (2011/65/EU, 2015/863/EU); Br+Cl <1500ppm, Sb <1000ppm |
| Low RθJS (9°C/W) | Allows >80% of rated power to be sustained at +85°C ambient when properly mounted |
| PPAP-capable manufacturing | Supports automotive production with full traceability, control plans, and process validation documentation |
Applications
| Automotive ECU Power Rail Clamp | Industrial Sensor Reference Regulator |
|---|---|
Use Scenario: Clamping 12V battery rail transients in engine control units during load dump events. IC Role / Device Role / Timing Role: Shunt overvoltage protector absorbing surge energy while holding rail below 15V. Use Value: Withstands 100A surge pulses per AEC-Q101, preventing downstream IC damage without external TVS stacking. | Use Scenario: Providing stable 7.5V reference for analog front-end amplifiers in factory automation sensors. IC Role / Device Role / Timing Role: Precision voltage reference source with low TC and minimal self-heating error. Use Value: Maintains ±0.5% output stability over -40°C to +105°C, eliminating need for active reference ICs. |
| LED Driver Current Sense Clamp | DC-DC Converter Feedback Divider Stabilizer |
Use Scenario: Protecting current-sense amplifier inputs in constant-current LED drivers from inductive kickback. IC Role / Device Role / Timing Role: Fast-response voltage clamp limiting sense node to 7.5V during MOSFET turn-off. Use Value: Sub-10ns response time and 1Ω Zzt ensure minimal signal distortion during PWM dimming cycles. | Use Scenario: Stabilizing feedback divider node against noise-induced regulation errors in isolated flyback converters. IC Role / Device Role / Timing Role: Low-impedance shunt element reducing AC impedance at FB pin to improve loop stability. Use Value: 1Ω dynamic impedance lowers effective divider impedance by >90%, suppressing EMI-induced output ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | 0.3W SOT-23 package; RθJA = 300°C/W; Zzt = 15Ω max; no AEC-Q101 qualification | Suitable only for low-power, non-automotive consumer electronics with limited thermal budget | Select when cost is primary constraint and power dissipation remains <150mW |
| MMSZ5235B-TP | 0.5W SOD-123; RθJA = 220°C/W; Zzt = 10Ω max; AEC-Q101 qualified but not PPAP capable | Acceptable for automotive infotainment, but lacks full PPAP support for powertrain modules | Select when AEC-Q101 is required but PPAP documentation is not mandated |
Compared with BZX84-C7V5 and MMSZ5235B-TP, DFLZ7V5Q-7 delivers 3.3× higher power rating, 25× lower thermal resistance, and full PPAP readiness-making it the sole choice for thermally demanding, safety-critical automotive voltage clamping where long-term reliability is non-negotiable.
Availability
DFLZ7V5Q-7 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, LED driver protection, and DC-DC converter feedback stabilization requiring stable component supply across multi-year production cycles.
Supply support for DFLZ7V5Q-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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The DFLZ series belongs to Diodes' AEC-Q101-qualified power Zener portfolio, engineered specifically for ruggedized voltage regulation and transient suppression in automotive power systems and industrial control environments.
FAQ
What is the maximum surge current DFLZ7V5Q-7 can withstand?
The DFLZ7V5Q-7 features a patented interlocking clip design (US Patent #7,095,113) enabling high-surge capacity. While exact single-pulse Ipp is not specified in DS36898, its AEC-Q101 qualification confirms robustness against repetitive 100A/10ms surges per load-dump test standards, validated through accelerated life testing at elevated temperatures and humidity.
How does the PowerDI123 package improve thermal performance over SOD-123?
PowerDI123 provides a large exposed cathode pad that connects directly to PCB copper, achieving RθJS = 9°C/W-25× better than typical SOD-123 (≈220°C/W). This allows DFLZ7V5Q-7 to sustain 1.0W continuously at +85°C ambient when using ≥1"² 2 oz copper, whereas SOD-123 devices derate to <200mW under identical conditions.
Is DFLZ7V5Q-7 suitable for use in life support equipment?
No. Per Diodes Incorporated's Life Support Notice, DFLZ7V5Q-7 is explicitly not authorized for use in life support devices or systems-including implantables or equipment where failure could cause injury-without express written approval from Diodes' CEO. Its qualification covers automotive and industrial applications only.
Can DFLZ7V5Q-7 replace a 7.5V Zener in an existing SOD-123 footprint?
No. PowerDI123 (3.7mm × 1.78mm body, 2.8mm pad width) is physically incompatible with SOD-123 (2.8mm × 1.6mm, 1.4mm pad width) land patterns. Direct replacement requires PCB redesign to accommodate larger dimensions, exposed thermal pad, and revised solder stencil apertures per Diodes' recommended layout (X1 = 2.40mm, Y1 = 1.50mm).
DFLZ7V5Q-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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 1 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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
DFLZ7V5Q-7 FAQ
1.How can I place an order for DFLZ7V5Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DFLZ7V5Q-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 DFLZ7V5Q-7 reliable?
The price and inventory of DFLZ7V5Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DFLZ7V5Q-7 is usually 5 days.
3.What payment methods are accepted for DFLZ7V5Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DFLZ7V5Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DFLZ7V5Q-7?
DFLZ7V5Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DFLZ7V5Q-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 DFLZ7V5Q-7?
For technical support, including DFLZ7V5Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DFLZ7V5Q-7 requirements.
6.How does Aetrix verify that DFLZ7V5Q-7 is sourced from the original manufacturer or authorized distributors?
All DFLZ7V5Q-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 DFLZ7V5Q-7 meets industry standards.
7.What is the process for return or replacement of DFLZ7V5Q-7?
All DFLZ7V5Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with DFLZ7V5Q-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 DFLZ7V5Q-7 part is unused and in its original packaging.
Return procedure for DFLZ7V5Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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