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Microchip Technology 1PMT5941AE3/TR13
- Part No.:
- 1PMT5941AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941AE3/TR13.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,267
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Product details
Overview
1PMT5941AE3/TR13 from Microsemi is a 47 V, ±5% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 67 Ω dynamic impedance at 8.0 mA test current and <1 µA reverse leakage at 35.8 V, used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1PMT5941AE3/TR13 datasheet, 1PMT5941AE3/TR13 pinout, 1PMT5941AE3/TR13 application, or 1PMT5941AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly per EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1, requiring no external biasing. Its full metallic bottom and integral heat sink locking tab enable reliable thermal conduction to the PCB pad while eliminating solder flux entrapment during reflow.
The device exhibits tight voltage regulation across its operating range: 47 V nominal Zener voltage at 8.0 mA test current (IZT), 35.8 V maximum reverse voltage (VR), and 51.2 mA maximum Zener current (IZM) derived from its 3.0 W power rating - all specified at TL = 30°C with 20-second stabilization after DC current application.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±5% at IZT = 8.0 mA - defines stable regulation point for feedback networks |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power handling with PCB thermal path |
| Dynamic Impedance (ZZT) | 67 Ω at IZT = 8.0 mA - determines output voltage variation under load transients |
| Reverse Leakage (IR) | <1 µA at VR = 35.8 V - ensures minimal standby current in high-impedance sensing paths |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies temperature rise per watt dissipated into PCB copper |
| ESD Rating | >16 kV HBM - supports robust handling in automated manufacturing without special ESD controls |
| Knee Impedance (ZZK) | 1000 Ω at IZK = 0.25 mA - indicates onset of regulation at low-current startup or standby modes |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; mounting position unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and voltage reference node; must be connected to ground or low-impedance return path |
| Lead 2 | Anode | Current entry point during reverse-bias operation; connects to unregulated input or overvoltage source |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and void-free solder joints |
| EIA-481 tape-and-reel packaging | Supports seamless integration with pick-and-place equipment for high-volume automated assembly |
| 16 kV HBM ESD rating | Reduces need for upstream ESD protection components in board-level designs |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision voltage reference establishing error amplifier threshold at secondary-side controller. Use Value: 47 V Zener voltage and ±5% tolerance ensure stable regulation within 1% output accuracy over line/load/temperature. | Use Scenario: Clamping transient surges on 36–48 V industrial bus lines to protect downstream ICs and sensors. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting excess energy to ground before voltage exceeds safe limits. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway under repeated 100 ns–1 µs transients. |
| Programmable Voltage Reference | DC-DC Converter Trim Circuit |
Use Scenario: Providing adjustable reference voltage for DAC-based programmable power supplies or lab-grade instruments. IC Role / Device Role / Timing Role: Stable, low-drift voltage node referenced against system ground for analog control loops. Use Value: Low 1 µA reverse leakage at 35.8 V minimizes loading error in high-impedance divider networks. | Use Scenario: Fine-tuning output voltage of fixed-output DC-DC modules using external resistor dividers. IC Role / Device Role / Timing Role: Accurate voltage setpoint generator compensating for module tolerance and load regulation drift. Use Value: 67 Ω dynamic impedance ensures minimal output deviation (<30 mV) under 10 mA trim current variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5255BS | 47 V ±5%, 200 mW SOT-23 package, 22 Ω ZZT at 20 mA - lower power, higher impedance | Suitable only for signal-level referencing; not rated for >0.2 W continuous dissipation | Select when space-constrained and power <0.2 W; avoid for power supply regulation or clamping |
| Vishay SMBZ5255B | 47 V ±5%, 3.0 W DO-214AA package, 40 Ω ZZT at 12 mA - same power, different footprint | Requires larger PCB area and manual or wave-solder process; no integrated heat sink tab | Select when DO-214AA is already standardized; requires thermal pad redesign for equivalent cooling |
Compared with MMBZ5255BS and SMBZ5255B, the 1PMT5941AE3/TR13 delivers identical Zener voltage but uniquely combines 3.0 W capability with SMT compatibility, integral heat sinking, and EIA-481 tape-and-reel - enabling high-power regulation without sacrificing automation or thermal performance.
Availability
1PMT5941AE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and programmable voltage reference designs requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for 1PMT5941AE3/TR13 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
Microsemi (now part of Microchip Technology) is a semiconductor company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode product line was designed to deliver high-power, surface-mount voltage regulation with enhanced thermal performance and manufacturability - addressing the need for robust, automated-assembly-ready alternatives to legacy through-hole Zeners.
FAQ
What is the Zener voltage tolerance for 1PMT5941AE3/TR13?
The 1PMT5941AE3/TR13 has a standard Zener voltage tolerance of ±5% at 47 V, measured at IZT = 8.0 mA with TAB 1 held at 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the E3 suffix denotes the standard ±5% version. This tolerance directly impacts regulation accuracy in feedback and reference applications.
How is thermal management handled in the 1PMT5941AE3/TR13 package?
The 1PMT5941AE3/TR13 uses a Powermite® package with an integral heat sink locking tab and full metallic bottom that conducts heat directly from the junction to the PCB copper pad. Its specified thermal resistance is 30°C/W junction-to-TAB1, meaning a 3.0 W dissipation causes a 90°C temperature rise above the TAB temperature - requiring adequate copper area and thermal vias for reliable operation.
What does the "TR13" suffix indicate in 1PMT5941AE3/TR13?
The "TR13" suffix in 1PMT5941AE3/TR13 specifies EIA-481 compliant tape-and-reel packaging on a 13-inch reel containing 12,000 units. This format is optimized for high-speed pick-and-place equipment and ensures consistent feeding and placement accuracy in automated SMT lines - distinguishing it from the 7-inch reel (TR7) variant holding 3,000 pieces.
Can 1PMT5941AE3/TR13 be used in place of through-hole Zener diodes like 1N5255B?
Yes, the 1PMT5941AE3/TR13 provides equivalent 47 V Zener functionality but in a surface-mount Powermite® package with 3.0 W rating - matching the power capability of the 1N5255B (500 mW) only when properly heatsinked via its TAB1. Unlike the 1N5255B, the 1PMT5941AE3/TR13 eliminates flux entrapment risk and supports automated assembly, though PCB layout must accommodate its unique footprint and thermal pad.
What is the maximum reverse voltage (VR) specification for 1PMT5941AE3/TR13?
The maximum reverse voltage (VR) for 1PMT5941AE3/TR13 is 35.8 V, defined as the voltage at which reverse leakage current reaches 1 µA. This parameter establishes the upper limit of non-regulating reverse bias before significant conduction begins - critical for designing clamping thresholds and ensuring safe operation below breakdown in standby conditions.
1PMT5941AE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 67 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 35.8 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:
- DO-216AA
1PMT5941AE3/TR13 FAQ
1.How can I place an order for 1PMT5941AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941AE3/TR13 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 1PMT5941AE3/TR13 reliable?
The price and inventory of 1PMT5941AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941AE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5941AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941AE3/TR13?
1PMT5941AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941AE3/TR13 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 1PMT5941AE3/TR13?
For technical support, including 1PMT5941AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5941AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941AE3/TR13 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 1PMT5941AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5941AE3/TR13?
All 1PMT5941AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941AE3/TR13, 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 1PMT5941AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5941AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941AE3/TR13 Tags
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