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Diodes Incorporated SMAZ15-13-F
- Part No.:
- SMAZ15-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAZ15-13-F.pdf
- Description:
- DIODE ZENER 15V 1W SMA
- Quantity:
- Payment:
- Shipping:
Inventory:318,832
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Product details
Overview
SMAZ15-13-F from Diodes Incorporated is a 1.0W surface-mount Zener diode with a nominal zener voltage of 15.0V (±5% tolerance), 150Ω maximum zener impedance at 10mA test current, and 11.4V minimum knee voltage at 1.0mA. It features SMA package, RoHS-compliant matte tin plating, and is rated for -65°C to +150°C operation - used for precision voltage regulation and overvoltage protection in DC power rails.
For engineers reviewing the SMAZ15-13-F datasheet, SMAZ15-13-F pinout, SMAZ15-13-F application, or SMAZ15-13-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 100°C/W), power derating above +50°C, and reverse leakage at VR = 11.4V (≤1.0µA).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its 15.0V nominal regulation point is specified at IZT = 10mA, with low dynamic impedance (ZZT ≤ 150Ω) ensuring minimal output voltage variation across current changes.
The device uses a planar epitaxial construction with cathode band polarity marking and is optimized for automated SMT assembly on FR-4 PCBs. Thermal performance is defined with standard pad layout per Diodes Inc. package outline, delivering RθJT = 30°C/W and RθJA = 100°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.0V nominal, 14.25–15.75V range at 10mA - defines stable regulation point for feedback or clamp circuits |
| Power Dissipation (PD) | 1.0W at TA = +25°C, derated 10mW/°C above +50°C - sets maximum continuous power handling on standard PCB |
| Zener Impedance (ZZT) | ≤150Ω at IZT = 10mA - ensures tight voltage regulation under dynamic load transients |
| Reverse Leakage (IR) | ≤1.0µA at VR = 11.4V - guarantees low quiescent current in standby or high-impedance sensing nodes |
| Thermal Resistance (RθJA) | 100°C/W - determines junction temperature rise under given ambient and power conditions |
| Operating Temperature | -65°C to +150°C - supports industrial and automotive under-hood applications without derating |
Pinout & Package
Package: SMA (Surface Mount Axial), molded plastic case (UL 94V-0), cathode indicated by band or notch. Dimensions: 4.00–4.60mm length (B), 2.29–2.92mm width (A), 1.27–1.63mm height (C). Weight: ~0.064g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node in regulation circuit; reverse-biased during normal operation |
| Cathode | Zener breakdown terminal / voltage reference output | Provides stable 15V reference when reverse-biased; marked with band/notch for orientation |
Key Features
| Feature | Design Value |
|---|---|
| 1.0W Power Rating | Enables robust voltage clamping in 12–24V industrial power supplies without external heatsinking |
| ±5% VZ Tolerance | Reduces binning requirements and simplifies BOM management for mid-precision regulation |
| Lead-Free & Halogen-Free | Meets IPC-J-STD-020 Level 1 moisture sensitivity and global environmental compliance mandates |
| Low RθJA (100°C/W) | Allows operation up to 125°C ambient in compact layouts with standard 1" × 0.85" FR-4 copper pads |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Zener reference element in TL431-based shunt regulator loop. Use Value: Maintains ±1% output accuracy across -40°C to +85°C with <150Ω dynamic impedance limiting error drift. | Use Scenario: Overvoltage protection for microcontroller supply rail in body control modules. IC Role / Device Role / Timing Role: Clamping diode limiting VIN to 15.75V during load dump events. Use Value: Absorbs transient energy within 1.0W rating while holding rail below MCU absolute max rating. |
| Test Equipment Voltage Reference | LED Driver Current Sense Clamp |
Use Scenario: Providing stable 15V reference for DAC output buffers in bench multimeters. IC Role / Device Role / Timing Role: Precision voltage reference source for analog front-end calibration. Use Value: Delivers <0.5% initial error and <50ppm/°C TC over 0–70°C due to tight VZ tolerance and low ZZT. | Use Scenario: Setting upper limit on current-sense amplifier output in constant-current LED drivers. IC Role / Device Role / Timing Role: Output voltage clamp preventing op-amp saturation during LED open-circuit fault. Use Value: Limits sense voltage to 15.75V, preserving amplifier linearity and enabling fast fault detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15-7-F | 300mW rating, SOT-23 package, 15V ±5%, RθJA = 300°C/W | Limited to low-power signal-level clamping; unsuitable for >100mA regulation loads | Select when board space is constrained and power dissipation remains <300mW |
| 1N4744A | 1.0W DO-41 through-hole, 15V ±5%, ZZT = 16Ω at 25mA | Requires wave soldering; higher thermal resistance limits high-temp PCB use | Select for legacy through-hole designs or where manual rework accessibility is required |
Compared with BZX84-C15-7-F and 1N4744A, SMAZ15-13-F uniquely balances SMT compatibility, 1.0W capability, and 100°C/W thermal resistance - making it optimal for thermally dense industrial PCBs needing reliable 15V clamping without footprint or assembly compromise.
Availability
SMAZ15-13-F is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU protection, and test equipment reference design requiring stable component supply and full RoHS/Green compliance.
Supply support for SMAZ15-13-F 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, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The SMAZ series belongs to Diodes' high-reliability Zener diode product line, engineered specifically for stable voltage reference and transient suppression in space-constrained, high-volume SMT applications across industrial and automotive markets.
FAQ
What is the maximum reverse current at 11.4V for SMAZ15-13-F?
The maximum reverse leakage current is 1.0µA at VR = 11.4V and TA = +25°C, as specified in the Electrical Characteristics table. This value ensures minimal parasitic loading in high-impedance reference circuits and remains stable across the full operating temperature range.
Does SMAZ15-13-F have a defined zener knee voltage?
Yes - the knee voltage is specified as 11.4V at IZK = 1.0mA. This parameter defines the onset of measurable zener conduction and is critical for low-current biasing applications where regulation must begin predictably below the nominal 15V breakdown point.
Can SMAZ15-13-F be used in place of SMAZ12 or SMAZ18 in existing designs?
Only if the circuit's voltage margin and power dissipation allow. SMAZ15-13-F has a distinct 15.0V nominal VZ and 150Ω impedance at 10mA - substituting requires verifying that 15V regulation meets system tolerance, and that thermal design accommodates identical 1.0W dissipation at the new voltage point.
What is the recommended PCB pad layout for optimal thermal performance?
Diodes Incorporated specifies a 1 inch × 0.85 inch FR-4 pad layout per their package outlines page. Using this layout achieves the rated RθJA = 100°C/W; reducing copper area increases thermal resistance and may require derating power above +50°C beyond the standard 10mW/°C specification.
SMAZ15-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 11.4 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
SMAZ15-13-F FAQ
1.How can I place an order for SMAZ15-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAZ15-13-F 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 SMAZ15-13-F reliable?
The price and inventory of SMAZ15-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAZ15-13-F is usually 5 days.
3.What payment methods are accepted for SMAZ15-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAZ15-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAZ15-13-F?
SMAZ15-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAZ15-13-F 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 SMAZ15-13-F?
For technical support, including SMAZ15-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAZ15-13-F requirements.
6.How does Aetrix verify that SMAZ15-13-F is sourced from the original manufacturer or authorized distributors?
All SMAZ15-13-F 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 SMAZ15-13-F meets industry standards.
7.What is the process for return or replacement of SMAZ15-13-F?
All SMAZ15-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAZ15-13-F, 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 SMAZ15-13-F part is unused and in its original packaging.
Return procedure for SMAZ15-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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