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Microchip Technology 1PMT5943BE3/TR13
- Part No.:
- 1PMT5943BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5943BE3/TR13.pdf
- Description:
- DIODE ZENER 56V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,093
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Product details
Overview
1PMT5943BE3/TR13 from Microsemi is a 56 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 86 Ω dynamic impedance at 6.7 mA test current and 1300 µA max reverse leakage at 42.6 V, used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1PMT5943BE3/TR13 datasheet, 1PMT5943BE3/TR13 pinout, 1PMT5943BE3/TR13 application, or 1PMT5943BE3/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 using 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, designed for stable regulation under DC bias conditions where precise clamping at 56 V is required. Its full metallic bottom and integral heat sink tab enable efficient thermal transfer to the PCB, supporting continuous 3.0 W dissipation when mounted on adequate copper area.
The device exhibits tight voltage control across temperature (–55°C to +150°C junction range) and low reverse leakage (≤1300 µA at VR = 42.6 V), with dynamic impedance measured at 60 Hz AC superimposed on 6.7 mA DC test current - confirming suitability for low-noise, medium-power regulation tasks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±5% at IZT = 6.7 mA, TC = 30°C - defines nominal regulation point for feedback and clamp circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling with standard PCB thermal relief |
| Dynamic Impedance (ZZT) | 86 Ω at IZT = 6.7 mA - determines output voltage variation under load transients |
| Reverse Leakage (IR) | ≤1300 µA at VR = 42.6 V - ensures minimal standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies thermal path efficiency to PCB copper for thermal management design |
| ESD Rating | >16 kV per Human Body Model - supports robust handling in automated manufacturing without special ESD controls |
| Package | Powermite® (DO-216) - surface-mount molded package with full metallic bottom and locking heat sink tab |
Pinout & Package
Powermite® package features a 2-terminal surface-mount construction with cathode identified by TAB 1. The full metallic bottom serves as both mechanical anchor and thermal interface; no separate anode/cathode pins - terminals are TAB 1 (cathode) and molded body (anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to copper pour for rated 3.0 W dissipation |
| Molded Body | Anode | Exposed metallization on side of package; forms second terminal and contributes to thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Integral Heat Sink Locking Tab | TAB 1 acts as structural and thermal anchor, enabling direct PCB copper coupling for 30°C/W thermal resistance |
| Full Metallic Bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| EIA-481 Tape & Reel Packaging | Compatible with standard SMT pick-and-place equipment; 13-inch reel holds 12,000 units |
| Low Reverse Leakage | 1300 µA max at 42.6 V enables use in high-impedance sensing and bias networks without signal degradation |
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: Zener reference providing stable 56 V threshold to drive optocoupler LED in secondary-side regulation. Use Value: Tight ±5% tolerance and low dynamic impedance ensure <±1% output voltage drift across line/load/temperature. | Use Scenario: Protecting microcontroller I/O pins or analog front-end inputs from transient overvoltage events. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage to 56 V before damage threshold of downstream ICs. Use Value: 3.0 W power rating allows absorption of short-duration surges without thermal runaway or parameter shift. |
| Industrial Sensor Biasing | Programmable Voltage Reference |
Use Scenario: Providing stable excitation voltage for resistive bridge sensors in harsh-environment transmitters. IC Role / Device Role / Timing Role: Precision Zener reference establishing fixed bias point for Wheatstone bridge operation. Use Value: Low reverse leakage (<1300 µA) prevents loading error in high-impedance sensor interfaces. | Use Scenario: Setting reference voltage for DACs, ADCs, or programmable logic controllers requiring stable mid-range references. IC Role / Device Role / Timing Role: Two-terminal passive reference source replacing more complex IC-based solutions. Use Value: 56 V output with 86 Ω dynamic impedance supports stable operation even with moderate load variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5355B | Same 56 V nominal, but DO-204AL package; higher thermal resistance (50°C/W); 5 W rating at 25°C ambient only | Requires larger PCB pad for thermal performance; not optimized for automated SMT placement | Select when higher peak power needed and manual or wave-solder assembly is used |
| BZX84-C56 | SOT-23 package; 56 V ±5%; lower power (500 mW); 15 Ω ZZT at 5 mA | Limited to low-power bias/reference roles; unsuitable for >0.5 W continuous dissipation | Select for space-constrained, low-current applications where thermal mass is not required |
Compared with 1N5355B and BZX84-C56, the 1PMT5943BE3/TR13 delivers superior thermal performance (30°C/W vs. 50°C/W or unlisted), full SMT compatibility, and guaranteed 3.0 W operation at elevated board temperatures - making it optimal for industrial power conversion and ruggedized embedded systems.
Availability
1PMT5943BE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and industrial sensor biasing requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for 1PMT5943BE3/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 U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was engineered for high-power density surface-mount voltage regulation in mission-critical power systems where thermal stability, ESD robustness, and automated assembly compatibility are essential.
FAQ
What is the zener voltage tolerance for 1PMT5943BE3/TR13?
The 1PMT5943BE3/TR13 has a standard zener voltage tolerance of ±5% at 56 V, measured at 6.7 mA test current and case temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the E3/TR13 variant specifies ±5%.
How is thermal performance specified for 1PMT5943BE3/TR13?
The 1PMT5943BE3/TR13 has a junction-to-TAB thermal resistance of 30°C/W. This value assumes TAB 1 is soldered to sufficient copper area on the PCB. At TAB 1 = 60°C, the device sustains 3.0 W DC power dissipation - critical for thermal design in compact power supplies.
Is 1PMT5943BE3/TR13 compatible with standard SMT assembly processes?
Yes, the 1PMT5943BE3/TR13 uses EIA-481 compliant tape-and-reel packaging (13-inch reel, 12,000 units) and is fully compatible with automated pick-and-place equipment. Its Powermite® package features a full metallic bottom that prevents solder flux entrapment during reflow.
What is the maximum reverse leakage current for 1PMT5943BE3/TR13?
The maximum reverse leakage current for 1PMT5943BE3/TR13 is 1300 µA at a reverse voltage of 42.6 V and ambient temperature of 30°C. This low leakage supports use in high-impedance bias networks without significant error contribution.
Does 1PMT5943BE3/TR13 have ESD protection built-in?
Yes, the 1PMT5943BE3/TR13 is rated for >16 kV per the Human Body Model (HBM), verified per JEDEC JS-001. This level of ESD robustness eliminates the need for additional handling precautions during standard SMT manufacturing.
1PMT5943BE3/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):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 86 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 42.6 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
1PMT5943BE3/TR13 FAQ
1.How can I place an order for 1PMT5943BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5943BE3/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 1PMT5943BE3/TR13 reliable?
The price and inventory of 1PMT5943BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5943BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5943BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5943BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5943BE3/TR13?
1PMT5943BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5943BE3/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 1PMT5943BE3/TR13?
For technical support, including 1PMT5943BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5943BE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5943BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5943BE3/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 1PMT5943BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5943BE3/TR13?
All 1PMT5943BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5943BE3/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 1PMT5943BE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5943BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5943BE3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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