Microchip Technology 1PMT5955AE3/TR13
- Part No.:
- 1PMT5955AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5955AE3/TR13.pdf
- Description:
- DIODE ZENER 180V 3W DO216AA
- Quantity:
- Payment:

- Shipping:

Inventory:3,932
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Product details
Overview
1PMT5955AE3/TR13 from Microsemi is a 180 V, ±5% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 temperature of 60°C, with 900 Ω dynamic impedance at 2.1 mA test current and 7000 µA max reverse leakage at 144 V, used for precision voltage regulation and overvoltage protection in industrial power supplies.
For engineers reviewing the 1PMT5955AE3/TR13 datasheet, 1PMT5955AE3/TR13 pinout, 1PMT5955AE3/TR13 application, or 1PMT5955AE3/TR13 equivalent, key selection criteria include zener voltage tolerance (±5%), thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly.
Technical Context
This Zener diode operates as a voltage reference and clamping device in DC power rails and protection circuits. Its Powermite® package features a full metallic bottom for flux-free soldering and an integral locking tab acting as a heat sink, enabling reliable thermal transfer to PCB copper.
Rated for -55°C to +150°C junction/storage temperature, it delivers stable 180 V regulation under controlled test conditions (IZT = 2.1 mA, TL = 30°C) with tight knee characteristics (IZK = 0.25 mA, ZZK = 7000 Ω) and low reverse leakage (IR ≤ 1 µA at VR = 144 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 180 V ±5% - precise clamping threshold for high-voltage rail protection |
| Test Current (IZT) | 2.1 mA - defined operating point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZT) | 900 Ω - low AC impedance ensures minimal voltage deviation under small-signal ripple |
| Max Reverse Leakage (IR) | 1 µA at VR = 144 V - guarantees minimal standby current in high-impedance bias networks |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation in thermally constrained SMT layouts |
| Thermal Resistance | 30°C/W junction-to-TAB - quantifies thermal path efficiency to PCB copper pad |
| ESD Rating | >16 kV HBM - supports handling and assembly without external ESD protection |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1; mounting position unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be soldered to copper pour for thermal and electrical performance |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; connects to lower-potential node in clamping configuration |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| Integral heat-sink locking tab | Direct thermal path from junction to PCB via TAB 1 reduces thermal resistance to 30°C/W |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| ESD robustness | >16 kV Human Body Model rating allows safe handling and board-level integration without added protection circuitry |
| Tight zener tolerance option | ±5% standard; optional ±2% (suffix C) and ±1% (suffix D) available for precision reference applications |
Applications
| Industrial Power Supply Regulation | Telecom Line Card Protection |
|---|---|
Use Scenario: Stabilizing auxiliary bias rails in 48 V telecom power modules where input transients exceed 150 V. IC Role / Device Role / Timing Role: Zener diode providing primary overvoltage clamp and reference for feedback loop compensation. Use Value: 180 V clamping threshold prevents downstream IC damage during lightning-induced surges; 3.0 W rating sustains energy absorption without thermal runaway. | Use Scenario: Protecting analog front-end circuitry on DSL line cards exposed to induced AC line coupling. IC Role / Device Role / Timing Role: High-voltage shunt regulator absorbing fast-rising common-mode transients before they reach op-amps or ADCs. Use Value: Low 1 µA reverse leakage at 144 V minimizes loading on high-impedance sensor interfaces; >16 kV HBM withstands ESD events during field service. |
| Automotive Body Control Module | Programmable Logic Controller I/O Protection |
Use Scenario: Clamping 24 V battery rail spikes caused by load-dump events in BCM power domains. IC Role / Device Role / Timing Role: Primary transient voltage suppressor placed directly across supply pins of microcontroller and CAN transceivers. Use Value: -55°C to +150°C operating range meets AEC-Q101 ambient requirements; metallic bottom ensures repeatable solder joint integrity under thermal cycling. | Use Scenario: Safeguarding digital I/O channels in PLC backplanes subjected to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Precision Zener reference establishing trip threshold for discrete overvoltage detection comparators. Use Value: ±5% VZ tolerance ensures consistent trigger point across production units; 900 Ω ZZT maintains stable threshold under varying load currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5375BRLG | 180 V, 5 W DO-201AD package; higher power but larger footprint and no integrated heat-sink tab | Preferred where board space permits and higher surge energy absorption is required | Select when thermal budget allows larger package and 5 W peak dissipation is needed beyond steady-state 3 W |
| BZX85C180 | 180 V, 1.3 W DO-41 package; lower power, axial lead, no metallic thermal interface | Suitable for prototyping or low-volume through-hole designs with manual assembly | Choose only for legacy through-hole boards or cost-sensitive non-SMT applications where 3 W rating is not required |
Compared with 1PMT5955AE3/TR13, 1N5375BRLG offers higher power but lacks the flux-free metallic bottom and automated assembly optimization, while BZX85C180 sacrifices both power rating and SMT compatibility-making 1PMT5955AE3/TR13 optimal for high-reliability, volume SMT deployments requiring 3 W regulation at 180 V.
Availability
1PMT5955AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, telecom line card protection, automotive body control modules, and programmable logic controller I/O protection requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5955AE3/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 and mixed-signal components for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode product line was designed specifically for surface-mount applications demanding high power density, repeatable thermal performance, and automated manufacturing compatibility in harsh-environment systems.
FAQ
What is the zener voltage tolerance for 1PMT5955AE3/TR13?
The 1PMT5955AE3/TR13 has a standard zener voltage tolerance of ±5% at 180 V nominal, measured at 2.1 mA test current and TAB 1 temperature of 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request but are not applicable to this specific E3/TR13 variant.
How is thermal management implemented in the 1PMT5955AE3/TR13 package?
The 1PMT5955AE3/TR13 uses the Powermite® package with an integral metallic locking tab (TAB 1) that serves as both cathode and primary heat sink. Its 30°C/W junction-to-TAB thermal resistance requires direct soldering to a copper pour for effective heat dissipation, especially under sustained 3.0 W operation.
Is the 1PMT5955AE3/TR13 compatible with standard SMT reflow processes?
Yes, the 1PMT5955AE3/TR13 is fully compatible with standard lead-free and SnPb reflow profiles. Its full metallic bottom eliminates solder flux entrapment, and its molded construction withstands thermal cycling per J-STD-020. It is supplied in EIA-481 tape-and-reel format (13-inch reel, 12,000 pieces) for automated placement.
What is the maximum reverse leakage current for 1PMT5955AE3/TR13?
The maximum reverse leakage current for 1PMT5955AE3/TR13 is 1 µA at a reverse voltage of 144 V (80% of nominal 180 V), tested at TL = 30°C. This low leakage ensures minimal loading in high-impedance reference or bias networks where signal integrity is critical.
Does 1PMT5955AE3/TR13 meet any industry reliability standards?
The 1PMT5955AE3/TR13 is manufactured under ISO 9001-certified processes and exhibits >16 kV ESD rating per Human Body Model. While not explicitly AEC-Q101 qualified, its -55°C to +150°C operating range and robust Powermite® construction support use in automotive and industrial environments where extended temperature reliability is required.
1PMT5955AE3/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):
- 180 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 800 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 136.8 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
1PMT5955AE3/TR13 FAQ
1.How can I place an order for 1PMT5955AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5955AE3/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 1PMT5955AE3/TR13 reliable?
The price and inventory of 1PMT5955AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5955AE3/TR13 is usually 5 days.
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Once your 1PMT5955AE3/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 1PMT5955AE3/TR13?
For technical support, including 1PMT5955AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5955AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5955AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5955AE3/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 1PMT5955AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5955AE3/TR13?
All 1PMT5955AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5955AE3/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 1PMT5955AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5955AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5955AE3/TR13 Tags

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