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Diodes Incorporated SMAZ7V5-13
- Part No.:
- SMAZ7V5-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAZ7V5-13.pdf
- Description:
- DIODE ZENER 7.5V 1W SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,333
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Product details
Overview
SMAZ7V5-13 from Diodes Incorporated is a 1.0W surface-mount Zener diode with a nominal zener voltage of 7.5V (±5% tolerance), 2.0mA test current, 450Ω maximum zener impedance at IZT, and 5.0µA maximum reverse leakage at 5.0V. It operates across –65°C to +150°C and is used for voltage regulation and overvoltage protection in DC power rails of industrial control modules.
For engineers reviewing the SMAZ7V5-13 datasheet, SMAZ7V5-13 pinout, SMAZ7V5-13 application, or SMAZ7V5-13 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 100°C/W), power derating above +50°C, cathode polarity marking, and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This Zener diode functions as a precision shunt voltage reference in low-to-medium power linear regulation circuits. Its 7.5V nominal breakdown is specified at 2.0mA test current, with 450Ω dynamic impedance ensuring stable regulation under varying load conditions.
The device uses an SMA package with molded plastic body (UL 94V-0), lead-free matte tin plating, and cathode identification via band or notch. Thermal performance is defined for standard FR-4 mounting (1" × 0.85", 0.062" thick), enabling predictable power dissipation up to 1.0W at +25°C and linear derating at 10mW/°C above +50°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5V nominal, 7.13–7.88V range at 2.0mA - defines regulated output voltage under standard bias |
| Power Dissipation (PD) | 1.0W at TA = +25°C - sets maximum continuous power handling on standard FR-4 layout |
| Zener Impedance (ZZT) | ≤450Ω at IZT = 2.0mA - determines regulation stiffness and output voltage variation under load transients |
| Reverse Leakage (IR) | ≤5.0µA at VR = 5.0V - ensures minimal quiescent current in standby or undervoltage detection circuits |
| Thermal Resistance (RθJA) | 100°C/W - enables thermal design margin calculation for ambient temperatures up to +150°C |
| Operating Temperature | –65°C to +150°C - supports deployment in extended-temperature industrial and automotive under-hood environments |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with standard 0.5mm pitch reflow profiles and AOI inspection |
Pinout & Package
The SMA package is a 2-terminal surface-mount device with cathode identified by a band or notch on the case body. No internal pin numbering applies; terminals are unidirectional anode/cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias | Connected to lower-potential node in regulation path; must be routed with adequate copper area for thermal relief |
| Cathode | Current exit terminal during reverse breakdown | Marked with band/notch; connects to regulated voltage rail; requires stable reference ground return path |
Key Features
| Feature | Design Value |
|---|---|
| 1.0W Power Rating | Enables use in higher-current shunt regulation without external heat sinking on standard PCB layouts |
| ±5% VZ Tolerance | Provides predictable voltage clamping for cost-sensitive industrial power monitoring circuits |
| Lead-Free & Halogen-Free | Meets RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity requirements for high-reliability manufacturing |
| Cathode Band Polarity Marking | Supports automated optical inspection (AOI) and eliminates orientation errors in high-speed pick-and-place assembly |
Applications
| Industrial Sensor Signal Conditioning | DC Power Rail Overvoltage Clamp |
|---|---|
Use Scenario: Protecting analog front-end inputs of 4–20mA loop-powered temperature sensors against ESD and supply surges. IC Role / Device Role / Timing Role: Shunt clamping element placed between signal line and ground, conducting only when voltage exceeds 7.5V. Use Value: Limits transient-induced damage using its 1.0W surge capability and 450Ω dynamic impedance to hold clamp voltage within safe IC input range. | Use Scenario: Safeguarding 5V/7.5V auxiliary rails in programmable logic controller (PLC) backplanes during hot-swap events. IC Role / Device Role / Timing Role: Standby voltage regulator that activates only during overvoltage faults, diverting excess current to ground. Use Value: Maintains rail integrity below 8.0V during 100ms transients due to tight 7.13–7.88V VZ window and low IR leakage. |
| Microcontroller Reset Circuit Reference | Automotive Body Control Module Voltage Monitor |
Use Scenario: Providing stable threshold voltage for RC-based manual reset generation in embedded microcontrollers. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input to trigger reset when main supply drops below 7.5V. Use Value: Delivers repeatable trip point across –40°C to +125°C thanks to specified RθJA and wide operating temperature range. | Use Scenario: Monitoring 12V battery-derived 7.5V supply in door module ECUs for brown-out detection. IC Role / Device Role / Timing Role: Passive voltage sense node referenced to ground, interfacing with ADC input of automotive-grade MCU. Use Value: Ensures measurement accuracy with ≤5.0µA leakage at 5.0V, minimizing loading error on high-impedance divider networks. |
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 (Diodes Inc.) | 0.3W rating, SOT-23 package, same 7.5V ±5% VZ but higher ZZT (600Ω) | Lower power handling limits use to <100mA clamp currents; smaller footprint reduces thermal mass | Select when board space is constrained and peak power remains <300mW |
| SMBZ5230B (ON Semiconductor) | 1.0W SMA package, 7.5V ±5%, but higher IR (10µA @ 5V) and wider VZ spread (7.1–7.9V) | Less precise clamping in low-leakage monitoring circuits; acceptable for general-purpose rail protection | Choose when legacy BOM alignment with ON Semi standards is required |
Compared with BZX84-C7V5 and SMBZ5230B, SMAZ7V5-13 offers superior thermal robustness (1.0W vs. 0.3W), tighter leakage (5µA vs. 10µA), and lower dynamic impedance (450Ω vs. 600Ω), making it preferred for industrial power supervision where reliability under sustained fault conditions matters.
Availability
SMAZ7V5-13 is available at Aetrix Electronics and suitable for industrial sensor interfaces, PLC power supervision, microcontroller reset circuits, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMAZ7V5-13 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 industrial, computing, and automotive markets.
The SMAZ series belongs to Diodes' surface-mount Zener diode product line, engineered for stable voltage regulation and transient suppression in space-constrained, thermally demanding applications.
FAQ
What is the maximum continuous power dissipation for SMAZ7V5-13 at +70°C ambient?
At +70°C ambient, SMAZ7V5-13 is rated for 0.8W continuous power dissipation. This derives from its 1.0W rating at +25°C and linear derating of 10mW/°C above +50°C, resulting in 1.0W − (20°C × 10mW/°C) = 0.8W. Derating assumes standard FR-4 mounting per Diodes' package outline.
How is cathode polarity identified on the SMAZ7V5-13 package?
The cathode is marked with a visible band or notch on the body of the SMA package. This marking aligns with industry-standard DO-214AC orientation and is verified in Diodes' mechanical drawings and tape-and-reel packaging documentation. No silkscreen or alphanumeric marking is used for polarity.
Does SMAZ7V5-13 meet automotive AEC-Q200 stress testing requirements?
No, SMAZ7V5-13 is not AEC-Q200 qualified. It is rated for industrial temperature range (–65°C to +150°C) and RoHS compliance, but Diodes does not list it in their AEC-Q200-certified Zener portfolio. For automotive applications, consider the AEC-Q200-qualified BZT52-B7V5 or SMAZ7V5-Q series instead.
What is the typical junction-to-terminal thermal resistance (RθJT) for SMAZ7V5-13?
The typical RθJT for SMAZ7V5-13 is 30°C/W, measured from junction to solder pad under standard FR-4 mounting conditions. This value enables accurate junction temperature estimation when combined with PCB copper area and ambient temperature, supporting thermal reliability analysis in high-power-density designs.
SMAZ7V5-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAZ7V5-13 FAQ
1.How can I place an order for SMAZ7V5-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAZ7V5-13 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 SMAZ7V5-13 reliable?
The price and inventory of SMAZ7V5-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAZ7V5-13 is usually 5 days.
3.What payment methods are accepted for SMAZ7V5-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAZ7V5-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAZ7V5-13?
SMAZ7V5-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAZ7V5-13 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 SMAZ7V5-13?
For technical support, including SMAZ7V5-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAZ7V5-13 requirements.
6.How does Aetrix verify that SMAZ7V5-13 is sourced from the original manufacturer or authorized distributors?
All SMAZ7V5-13 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 SMAZ7V5-13 meets industry standards.
7.What is the process for return or replacement of SMAZ7V5-13?
All SMAZ7V5-13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAZ7V5-13, 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 SMAZ7V5-13 part is unused and in its original packaging.
Return procedure for SMAZ7V5-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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