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Diodes Incorporated SMAZ5V1-13-F
- Part No.:
- SMAZ5V1-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAZ5V1-13-F.pdf
- Description:
- DIODE ZENER 5.1V 1W SMA
- Quantity:
- Payment:
- Shipping:
Inventory:37,586
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Product details
Overview
SMAZ5V1-13-F from Diodes Incorporated is a 1.0W surface-mount Zener diode with nominal zener voltage 5.1V (±5% tolerance), 100mA test current, 5.0Ω dynamic impedance at 100mA, and maximum reverse leakage of 1.0µA at 2.5V. It serves as a precision voltage reference or overvoltage clamp in power supply regulation and ESD protection circuits for industrial DC-DC converters.
For engineers reviewing the SMAZ5V1-13-F datasheet, SMAZ5V1-13-F pinout, SMAZ5V1-13-F application, or SMAZ5V1-13-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 100°C/W), power derating above +50°C, cathode polarity marking, and RoHS-compliant matte tin plating for lead-free reflow compatibility.
Technical Context
This device operates in reverse-bias breakdown mode to maintain stable voltage across its terminals under varying load conditions. Its 5.1V nominal zener voltage is specified at 100mA test current (IZT), with dynamic impedance (ZZT) of 5.0Ω ensuring low regulation error during transient current changes.
Designed for FR-4 PCB mounting with defined pad layout per Diodes Inc. package outline, it features 30°C/W junction-to-terminal thermal resistance and 100°C/W junction-to-ambient rating - enabling reliable 1.0W dissipation only up to +50°C ambient before linear derating at 10mW/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1V nominal, 4.84–5.40V range at 100mA - defines regulated output voltage tolerance in feedback loops |
| Power Dissipation (PD) | 1.0W at TA = +25°C - sets maximum continuous steady-state power handling on standard PCB |
| Zener Impedance (ZZT) | 5.0Ω at IZT = 100mA - determines output voltage deviation under load step changes |
| Reverse Leakage (IR) | 1.0µA max at VR = 2.5V - ensures minimal quiescent current in standby voltage reference applications |
| Thermal Resistance (RθJA) | 100°C/W - quantifies temperature rise per watt on standard FR-4 layout; requires derating above +50°C |
| Package | SMA (DO-214AC) - surface-mount outline with cathode band marking and 0.064g mass for automated placement |
Pinout & Package
SMA (DO-214AC) package: molded plastic case (UL 94V-0), cathode indicated by band or notch, matte tin-plated terminals, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node in reverse-bias regulation; forms reference ground return path |
| Cathode | Zener breakdown terminal / Voltage regulation node | Connected to regulated rail; voltage at this terminal clamps to 5.1V when reverse current ≥100mA |
Key Features
| Feature | Design Value |
|---|---|
| 1.0W Power Rating | Enables use in higher-current shunt regulator designs without external heat sinking on standard PCBs |
| ±5% Zener Tolerance | Supports cost-sensitive applications where tight voltage accuracy is not required (e.g., non-critical biasing) |
| RoHS & Halogen-Free Compliance | Meets EU Directive 2011/65/EU and green manufacturing requirements for industrial and consumer end equipment |
| Cathode Band Polarity Marking | Ensures unambiguous orientation during automated pick-and-place and visual inspection on production lines |
Applications
| Industrial Power Supply Regulation | ESD Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback converter secondary-side TL431-based regulation. IC Role / Device Role / Timing Role: Zener diode provides precise 5.1V reference to comparator input, enabling ±1% output voltage control. Use Value: Low ZZT (5.0Ω) minimizes output deviation during line/load transients, improving regulation stability. | Use Scenario: Protecting USB data lines against electrostatic discharge events in embedded host controllers. IC Role / Device Role / Timing Role: Shunts ESD pulses (>8kV contact) to ground before reaching sensitive PHY inputs. Use Value: Fast response time (<1ns) and 1.0µA IR at 2.5V ensure negligible standby loading on signal lines. |
| Automotive Body Control Module | Programmable Logic Controller Input Conditioning |
Use Scenario: Providing overvoltage clamp on 5V microcontroller I/O pins exposed to CAN bus transceivers. IC Role / Device Role / Timing Role: Limits transient spikes to ≤5.4V to prevent latch-up in 5V-tolerant GPIOs. Use Value: 1.0W rating sustains repeated 100ns pulses without degradation, meeting ISO 7637-2 pulse 1/2a requirements. | Use Scenario: Level-shifting and surge suppression for 24V digital input channels in PLC backplanes. IC Role / Device Role / Timing Role: Clamps induced surges to safe levels before optocoupler input stages. Use Value: Cathode band marking enables consistent orientation in high-density DIN-rail mounted PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V1,115 | 0.3W rating, SOT-23 package, 5.1V ±5%, 60Ω ZZT at 5mA | Lower power handling limits use to <100mA continuous; smaller footprint suits space-constrained designs | Select when board area is critical and peak power remains below 300mW |
| 1N4733A | 1.0W DO-41 through-hole package, 5.1V ±5%, 7Ω ZZT at 49mA | Requires wave soldering or hand assembly; incompatible with fully SMT production lines | Select only for legacy through-hole systems or prototyping where reflow compatibility is not required |
Compared with BZX84-C5V1,115 and 1N4733A, SMAZ5V1-13-F uniquely balances 1.0W SMT power capability, low 5.0Ω impedance at high test current, and automated assembly readiness - making it optimal for production-grade industrial power rails requiring robust, repeatable clamping.
Availability
SMAZ5V1-13-F is available at Aetrix Electronics and suitable for industrial power supply regulation, ESD protection clamp, and automotive body control module applications requiring stable component supply and full traceability.
Supply support for SMAZ5V1-13-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, serving industrial, computing, communications, and consumer markets since 1960.
The SMAZ series belongs to Diodes' surface-mount Zener diode product line, engineered specifically for high-reliability voltage regulation and transient suppression in automated SMT production environments.
FAQ
What is the maximum continuous reverse current the SMAZ5V1-13-F can handle without exceeding its 1.0W rating?
At 25°C ambient, the device supports up to 196mA continuous reverse current (IZM = PD/VZ = 1.0W/5.1V ≈ 196mA). However, actual usable current must be reduced per derating curve: above +50°C, allowable power drops by 10mW/°C, limiting sustained current in elevated-temperature enclosures.
Does the SMAZ5V1-13-F have a specified capacitance value for high-frequency filtering applications?
No capacitance specification is provided in the DS18015 datasheet. Figure 2 shows typical total capacitance vs. reverse voltage for related SMAZ devices (e.g., SMAZ5V6), but no discrete value is given for SMAZ5V1. For RF bypass or noise filtering, a dedicated capacitor should be used in parallel.
How is polarity identified on the SMAZ5V1-13-F package?
Polarity is marked by a cathode band - a visible inked stripe near one end of the SMA (DO-214AC) body. The terminal adjacent to the band is the cathode; the opposite end is the anode. This matches industry-standard SMA diode orientation and is verified in the mechanical drawings on page 4 of DS18015 Rev. 19-2.
Is the SMAZ5V1-13-F suitable for use in life support equipment?
No. Per Diodes Incorporated's Important Notice (page 5 of DS18015), this device is explicitly not authorized for use in life support devices or systems without express written approval from Diodes' CEO. Its qualification does not cover safety-critical medical applications requiring ASIL or ISO 13485 compliance.
SMAZ5V1-13-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):
- 5.1 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 2.5 µA @ 1 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
SMAZ5V1-13-F FAQ
1.How can I place an order for SMAZ5V1-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAZ5V1-13-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 SMAZ5V1-13-F reliable?
The price and inventory of SMAZ5V1-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAZ5V1-13-F is usually 5 days.
3.What payment methods are accepted for SMAZ5V1-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAZ5V1-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAZ5V1-13-F?
SMAZ5V1-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAZ5V1-13-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 SMAZ5V1-13-F?
For technical support, including SMAZ5V1-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAZ5V1-13-F requirements.
6.How does Aetrix verify that SMAZ5V1-13-F is sourced from the original manufacturer or authorized distributors?
All SMAZ5V1-13-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 SMAZ5V1-13-F meets industry standards.
7.What is the process for return or replacement of SMAZ5V1-13-F?
All SMAZ5V1-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAZ5V1-13-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 SMAZ5V1-13-F part is unused and in its original packaging.
Return procedure for SMAZ5V1-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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