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Microchip Technology 1PMT5955E3/TR7
- Part No.:
- 1PMT5955E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5955E3/TR7.pdf
- Description:
- DIODE ZENER 180V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,825
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Product details
Overview
1PMT5955E3/TR7 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 = 60°C, with 900 Ω dynamic impedance at 2.1 mA test current and 136.8 mA maximum Zener current - used for precision voltage regulation and overvoltage protection in industrial power supplies.
For engineers reviewing the 1PMT5955E3/TR7 datasheet, 1PMT5955E3/TR7 pinout, 1PMT5955E3/TR7 application, or 1PMT5955E3/TR7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB1), ESD rating (>16 kV HBM), reverse leakage (<7 µA at 144 V), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This device operates as a single-terminal voltage reference diode with cathode designated by TAB 1, requiring no external biasing circuitry. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and eliminate solder flux entrapment during reflow.
The 1PMT5955E3/TR7 delivers stable 180 V regulation under DC conditions with tight knee characteristics (IZK = 0.25 mA, ZZK = 7000 Ω) and low reverse leakage (≤7 µA at VR = 144 V), enabling reliable clamping in high-voltage transient suppression circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 180 V ±5% at IZT = 2.1 mA - defines precise clamping threshold for overvoltage protection |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient absorption without derating in compact layouts |
| Dynamic Impedance (ZZT) | 900 Ω at IZT = 2.1 mA - ensures minimal voltage shift under varying load currents |
| Thermal Resistance | 30°C/W junction-to-TAB1 - supports direct thermal coupling to PCB copper pour or heatsink |
| ESD Rating | >16 kV per Human Body Model - provides robust handling immunity during SMT assembly and field operation |
| Reverse Leakage (IR) | ≤7 µA at VR = 144 V - guarantees low standby power loss in high-impedance bias networks |
| Forward Voltage | 1.2 V at IF = 200 mA - allows use as polarity-sensitive clamp or series protection element |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1; mechanical outline conforms to DO-216 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point - must be soldered to copper pour for thermal management and circuit return path |
| Lead 2 | Anode | Standard anode terminal - connects to positive rail or signal node requiring clamping to cathode reference |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3 W power handling in footprint smaller than DO-41 |
| Integral heat-sink locking tab | Improves thermal transfer efficiency and mechanical stability during thermal cycling and vibration |
| Full metallic bottom | Eliminates solder flux entrapment risk - critical for high-reliability industrial and aerospace assemblies |
| ESD robustness >16 kV HBM | Reduces need for upstream ESD protection components in sensitive input stages |
| Tight Zener voltage tolerance options | ±5% standard; ±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 rectifiers and AC/DC front-ends. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 180 V clamping to protect downstream regulators and controllers. Use Value: Maintains regulation accuracy within ±5% across -55°C to +150°C ambient, supporting extended temperature operation. | Use Scenario: Overvoltage protection on primary-side surge interfaces in DSLAM and ONU line cards. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping induced surges above 144 V before reaching PHY ICs. Use Value: Low 7 µA reverse leakage minimizes standby current draw while sustaining >16 kV ESD immunity. |
| Medical Imaging HV Bias Control | Test & Measurement Equipment Calibration |
Use Scenario: Reference voltage source for feedback loops in X-ray generator HV modules. IC Role / Device Role / Timing Role: Precision Zener element setting 180 V reference in closed-loop HV control circuitry. Use Value: 900 Ω dynamic impedance ensures <0.2 V output shift under 10% load current variation. | Use Scenario: Stable voltage reference in portable multimeter and calibration source designs. IC Role / Device Role / Timing Role: Primary voltage standard in autoranging analog front-end bias networks. Use Value: 30°C/W thermal resistance enables stable operation without external heatsinking in handheld enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5955BRLG | Same 180 V nominal Zener voltage, but DO-41 through-hole package; 1.5 W rating; higher thermal resistance (65°C/W) | Suitable for prototyping or low-volume through-hole boards; not compatible with automated SMT lines | Select when manual assembly or legacy board compatibility is required |
| BZX85C180 | 180 V Zener, ±5%, 1.3 W rating, DO-41 package; no ESD rating specified; 500 Ω typical ZZT | Limited to lower-power clamping; lacks >16 kV HBM rating and metallic-bottom thermal design | Choose only for cost-sensitive, non-critical applications where thermal performance and ESD immunity are secondary |
Compared with 1N5955BRLG and BZX85C180, the 1PMT5955E3/TR7 uniquely combines 3.0 W power handling, 30°C/W thermal resistance, and >16 kV ESD rating in a surface-mount Powermite® package - making it the only option suitable for high-reliability, high-density, automated production of industrial and telecom power systems.
Availability
1PMT5955E3/TR7 is available at Aetrix Electronics and suitable for industrial power supply regulation, telecom line card protection, medical imaging HV bias control, and test & measurement equipment calibration requiring stable component supply across long-lifecycle programs.
Supply support for 1PMT5955E3/TR7 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 designed specifically to deliver high-power surface-mount voltage regulation in space-constrained, thermally demanding environments - targeting applications where DO-41 and SMA packages fall short in thermal performance and manufacturability.
FAQ
What is the Zener voltage tolerance for 1PMT5955E3/TR7?
The 1PMT5955E3/TR7 has a standard Zener voltage tolerance of ±5% at 180 V, measured at 2.1 mA test current with TAB 1 held at 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request. This tolerance directly impacts regulation accuracy in precision reference and clamping circuits using the 1PMT5955E3/TR7.
How is thermal management handled for 1PMT5955E3/TR7?
The 1PMT5955E3/TR7 uses its metallic TAB 1 as the primary thermal path, with a specified junction-to-TAB thermal resistance of 30°C/W. Effective thermal management requires soldering TAB 1 to a minimum 100 mm² copper pour on the PCB. This design eliminates reliance on lead-frame conduction and enables sustained 3.0 W operation - a key advantage of the 1PMT5955E3/TR7 over conventional SMD Zeners.
Is 1PMT5955E3/TR7 compatible with standard SMT assembly processes?
Yes, the 1PMT5955E3/TR7 is fully compatible with EIA-481 tape-and-reel packaging (7-inch reel: 3,000 pcs; 13-inch reel: 12,000 pcs) and designed for use with automatic insertion equipment. Its Powermite® package features a locking tab and full metallic bottom that prevent flux entrapment and ensure consistent placement - critical for high-yield manufacturing of products using the 1PMT5955E3/TR7.
What is the maximum reverse leakage current for 1PMT5955E3/TR7?
The maximum reverse leakage current for 1PMT5955E3/TR7 is 7 µA at a reverse voltage of 144 V (80% of nominal 180 V Zener voltage), tested at TL = 30°C. This low leakage ensures minimal power loss in high-impedance bias networks and improves accuracy in precision reference applications where the 1PMT5955E3/TR7 serves as a stable voltage node.
Does 1PMT5955E3/TR7 have an ESD rating, and what standard does it meet?
Yes, the 1PMT5955E3/TR7 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as verified per ANSI/ESDA/JEDEC JS-001. This rating is intrinsic to the device structure and packaging - not dependent on external protection - and significantly reduces susceptibility to handling damage during SMT assembly and field operation of systems incorporating the 1PMT5955E3/TR7.
1PMT5955E3/TR7 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:
- ±20%
- 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
1PMT5955E3/TR7 FAQ
1.How can I place an order for 1PMT5955E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5955E3/TR7 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 1PMT5955E3/TR7 reliable?
The price and inventory of 1PMT5955E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5955E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5955E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5955E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5955E3/TR7?
1PMT5955E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5955E3/TR7 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 1PMT5955E3/TR7?
For technical support, including 1PMT5955E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5955E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5955E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5955E3/TR7 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 1PMT5955E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5955E3/TR7?
All 1PMT5955E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5955E3/TR7, 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 1PMT5955E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5955E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5955E3/TR7 Tags
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