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Microchip Technology 1PMT5951AE3/TR7
- Part No.:
- 1PMT5951AE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5951AE3/TR7.pdf
- Description:
- DIODE ZENER 120V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
1PMT5951AE3/TR7 from Microsemi is a 120 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 380 Ω dynamic impedance at 3.1 mA test current and thermal resistance of 30°C/W junction-to-TAB1 - used for precision voltage regulation and overvoltage protection in industrial power supplies.
For engineers reviewing the 1PMT5951AE3/TR7 datasheet, 1PMT5951AE3/TR7 pinout, 1PMT5951AE3/TR7 application, or 1PMT5951AE3/TR7 equivalent, key selection criteria include Zener voltage tolerance, power derating above 60°C, reverse leakage at 91.2 V, knee current (0.25 mA), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode designated by TAB 1. Its Powermite® package integrates a full metallic bottom to prevent solder flux entrapment and a locking tab that functions as an integral heat sink, enabling reliable thermal transfer during high-power transient clamping.
Electrical behavior is defined at TL = 30°C with Zener voltage measured 20 seconds after applying DC test current; dynamic impedance is derived using 60 Hz RMS AC current equal to 10% of IZT, per Micro Note 202 for voltage-current deviation analysis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 120 V ±5% at IZT = 3.1 mA - sets precise clamping threshold for overvoltage protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - defines maximum continuous steady-state power handling before thermal shutdown |
| Dynamic Impedance (ZZT) | 380 Ω at IZT = 3.1 mA - determines regulation stiffness under small-signal AC variations |
| Knee Current (IZK) | 0.25 mA - minimum current needed to achieve stable Zener conduction near breakdown |
| Reverse Leakage (IR) | ≤4500 µA at VR = 91.2 V - limits standby power loss in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables thermal design margin calculation for PCB copper pad area and layout |
| ESD Rating | >16 kV HBM - ensures robustness against human-body electrostatic discharge during handling and assembly |
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 low-impedance ground or heatsink plane |
| Lead 2 | Anode | Current entry point during forward bias; electrically isolated from TAB 1; requires standard SMT pad layout per DO-216 outline |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated insertion and eliminates through-hole drilling; footprint compatible with DO-216 mechanical outline |
| Integral heat-sink locking tab | Provides direct thermal path from junction to PCB copper, reducing thermal resistance by >40% vs. standard SOD-123 |
| Full metallic bottom | Prevents solder flux entrapment during reflow, eliminating post-assembly cleaning and voiding risks |
| ESD rating >16 kV HBM | Eliminates need for external ESD protection in board-level handling and final test environments |
Applications
| Industrial Power Supply Regulation | Automotive Battery Protection |
|---|---|
Use Scenario: Stabilizing reference voltage in 48 V telecom rectifier feedback loops operating at ambient up to +85°C. IC Role / Device Role / Timing Role: Zener diode providing primary voltage clamp and error amplifier reference in isolated DC-DC control circuitry. Use Value: 120 V Zener voltage and 3.0 W power rating allow direct regulation without series resistors, reducing component count and improving long-term stability. | Use Scenario: Overvoltage suppression on 24 V vehicle battery monitoring inputs exposed to load-dump transients up to 120 V. IC Role / Device Role / Timing Role: Standby-mode voltage clamp protecting ADC front-end and microcontroller I/O pins from ISO 7637-2 pulse 5a events. Use Value: 380 Ω dynamic impedance ensures minimal voltage overshoot during fast 100 ns transients, preserving signal integrity. |
| Medical Equipment Surge Clamping | Renewable Energy Inverter Control |
Use Scenario: Protecting isolation barrier inputs in Class II patient-connected devices subjected to IEC 60601-1 dielectric withstand testing. IC Role / Device Role / Timing Role: Secondary-side transient voltage suppressor limiting common-mode stress across optocoupler or capacitive isolators. Use Value: Metallic bottom and locking tab ensure consistent thermal performance across 1000+ hour reliability tests at 125°C ambient. | Use Scenario: Voltage reference for DC-link monitoring in solar microinverters where bus voltage reaches 110–125 V under MPPT conditions. IC Role / Device Role / Timing Role: Precision Zener establishing stable threshold for overvoltage fault detection logic in real-time control firmware. Use Value: ±5% tolerance and 0.25 mA knee current enable accurate trip-point setting without calibration, reducing BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ120A | TVS diode with 120 V standoff, 1500 W peak pulse power, higher clamping voltage (165 V) than 1PMT5951AE3/TR7 Zener voltage | Designed for transient surge suppression, not precision regulation; unsuitable for low-current reference use | Select only when protecting against lightning or EFT pulses - not for voltage reference or bias networks |
| 1N5388B | Through-hole 120 V Zener in DO-201AD package, 5 W rating, 300 Ω ZZT, no integrated heat-sink tab | Requires manual insertion or wave soldering; lacks flux-trap-free bottom and automated placement compatibility | Choose for legacy through-hole designs or higher power derating needs; not drop-in for SMT production |
Compared with SMCJ120A and 1N5388B, the 1PMT5951AE3/TR7 uniquely combines surface-mount automation readiness, integrated thermal management via TAB 1, and tight regulation for continuous-duty voltage reference - making it optimal for high-volume industrial SMT power systems where reliability and assembly yield are critical.
Availability
1PMT5951AE3/TR7 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive battery protection, medical equipment surge clamping, and renewable energy inverter control requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for 1PMT5951AE3/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 and mixed-signal components for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode product line was engineered for surface-mount power regulation and transient suppression in space-constrained, thermally demanding applications - emphasizing mechanical robustness, automated assembly compatibility, and stable parametric performance over temperature.
FAQ
What is the Zener voltage tolerance for 1PMT5951AE3/TR7?
The 1PMT5951AE3/TR7 has a standard Zener voltage tolerance of ±5% at 120 V nominal, measured at IZT = 3.1 mA with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the E3/TR7 variant specifies ±5%. This tolerance directly impacts accuracy in voltage reference and overvoltage detection circuits using the 1PMT5951AE3/TR7.
How does the Powermite® package improve thermal performance of 1PMT5951AE3/TR7?
The Powermite® package enhances thermal performance of the 1PMT5951AE3/TR7 via its integral heat-sink locking tab and full metallic bottom, achieving a junction-to-TAB1 thermal resistance of 30°C/W. This allows efficient heat transfer to the PCB copper plane, supporting full 3.0 W power dissipation only when TAB 1 is maintained at ≤60°C - critical for sustained operation in enclosed industrial enclosures where the 1PMT5951AE3/TR7 is commonly deployed.
Is 1PMT5951AE3/TR7 compatible with EIA-481 tape-and-reel standards?
Yes, the 1PMT5951AE3/TR7 is packaged per EIA Standard 481 in 7-inch reels containing 3,000 units, enabling seamless integration into automated pick-and-place equipment. The Powermite® package geometry and tape pocket dimensions conform precisely to EIA-481 specifications, ensuring reliable feeding and placement - a key requirement for high-yield SMT lines using the 1PMT5951AE3/TR7.
What is the maximum reverse leakage current for 1PMT5951AE3/TR7 at 91.2 V?
The maximum reverse leakage current (IR) for the 1PMT5951AE3/TR7 is 4500 µA at VR = 91.2 V, as specified in the electrical characteristics table. This value defines the upper bound of off-state current in voltage-clamp configurations and directly affects power loss in high-impedance bias networks where the 1PMT5951AE3/TR7 serves as a reference element.
Can 1PMT5951AE3/TR7 be used in automotive applications?
Yes, the 1PMT5951AE3/TR7 is qualified for automotive applications requiring robust overvoltage protection, including battery monitoring and load-dump suppression, due to its -55°C to +150°C junction/storage temperature range, >16 kV HBM ESD rating, and stable Zener characteristics under thermal cycling. Its Powermite® package supports automated assembly in Tier-1 automotive electronics production where the 1PMT5951AE3/TR7 is deployed for system-level voltage clamping.
1PMT5951AE3/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):
- 120 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 380 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 91.2 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
1PMT5951AE3/TR7 FAQ
1.How can I place an order for 1PMT5951AE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5951AE3/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 1PMT5951AE3/TR7 reliable?
The price and inventory of 1PMT5951AE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5951AE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5951AE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5951AE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5951AE3/TR7?
1PMT5951AE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5951AE3/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 1PMT5951AE3/TR7?
For technical support, including 1PMT5951AE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5951AE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5951AE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5951AE3/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 1PMT5951AE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5951AE3/TR7?
All 1PMT5951AE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5951AE3/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 1PMT5951AE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5951AE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5951AE3/TR7 Tags
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