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Microchip Technology 1PMT5954E3/TR7
- Part No.:
- 1PMT5954E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5954E3/TR7.pdf
- Description:
- DIODE ZENER 160V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,887
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Product details
Overview
1PMT5954E3/TR7 from Microsemi is a 160 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 700 Ω dynamic impedance at 2.3 mA test current and 121.6 mA maximum Zener current - used for precision voltage regulation and overvoltage protection in industrial power supplies.
For engineers reviewing the 1PMT5954E3/TR7 datasheet, 1PMT5954E3/TR7 pinout, 1PMT5954E3/TR7 application, or 1PMT5954E3/TR7 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low reverse leakage (≤1 µA at 121.6 V), 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 circuitry. Its full metallic bottom and integral heat sink locking tab enable direct thermal conduction to PCB copper, supporting stable regulation under sustained 3.0 W power dissipation when mounted on adequate thermal pads.
The device exhibits tight knee characteristics (IZK = 0.25 mA, ZZK = 6500 Ω) and low reverse leakage (IR ≤ 1 µA at VR = 121.6 V), enabling reliable clamping in low-current standby modes. Voltage measurement is defined at IZT = 2.3 mA with Tc = 30°C and stabilized after 20 s of DC current application.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 160 V ±5% at IZT = 2.3 mA - defines nominal regulation point with production tolerance band |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous thermal load without derating |
| Dynamic Impedance (ZZT) | 700 Ω at IZT = 2.3 mA - determines output voltage variation under load current changes |
| Thermal Resistance | 30°C/W junction-to-TAB - quantifies temperature rise per watt dissipated into PCB copper |
| ESD Rating | >16 kV per Human Body Model - ensures robustness during handling and board assembly |
| Reverse Leakage (IR) | ≤1 µA at VR = 121.6 V - guarantees minimal standby current in high-impedance clamp circuits |
| Knee Current (IZK) | 0.25 mA - minimum current required to enter regulated region with acceptable impedance |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; compatible with EIA-481 tape-and-reel (7″ reel: 3,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection; must be soldered to copper pour for thermal management |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; connects to ground or return path |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in compact footprint |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| ESD robustness | >16 kV HBM rating reduces risk of field failure due to electrostatic discharge during handling or operation |
| Low reverse leakage | ≤1 µA at 121.6 V enables use in battery-backed or ultra-low-power monitoring circuits |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing reference voltage in isolated DC-DC converter feedback loops operating up to 200 V input. IC Role / Device Role / Timing Role: Zener diode providing precise 160 V shunt regulation to maintain output accuracy under line/load transients. Use Value: Maintains ±5% output regulation tolerance across temperature with 30°C/W thermal resistance enabling passive heatsinking. | Use Scenario: Clamping transient surges on 120 VAC-derived DC rails in motor drive control boards. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing energy spikes above 121.6 V before downstream ICs are damaged. Use Value: Withstands 3.0 W peak pulse power and >16 kV ESD, reducing need for additional TVS stages. |
| Programmable Logic Controller Input Protection | Telecom Line Interface Clamp |
Use Scenario: Protecting 24 V digital input channels against accidental 160 V miswiring or induced surges. IC Role / Device Role / Timing Role: Shunt limiter conducting only above 160 V threshold, preserving signal integrity below that level. Use Value: Low 1 µA leakage at 121.6 V prevents false triggering; 0.25 mA knee current ensures clean turn-on behavior. | Use Scenario: Safeguarding analog front-end components on legacy telecom line cards exposed to lightning-induced transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on -48 V supply rail, referenced to chassis ground via TAB 1. Use Value: Metallic bottom and locking tab ensure repeatable thermal performance across 10+ year field deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5375B | Same 160 V nominal, but DO-41 through-hole package; 3.0 W rating at 75°C ambient; higher thermal resistance (~50°C/W) | Requires manual or wave soldering; unsuitable for high-density SMT layouts | Select 1PMT5954E3/TR7 for automated SMT lines and improved thermal performance on PCB copper |
| BZX85C160 | 160 V ±5%, DO-41 package, 1.3 W power rating; lower ESD rating (8 kV HBM); no metallic thermal tab | Limited to low-power clamping; cannot sustain 3.0 W continuous dissipation | Choose 1PMT5954E3/TR7 where sustained 3.0 W regulation or >16 kV ESD immunity is required |
Compared with 1N5375B and BZX85C160, the 1PMT5954E3/TR7 delivers superior thermal management via its metallic bottom and locking tab, supports full automated assembly, and provides higher ESD robustness - making it the preferred choice for industrial-grade SMT power regulation and protection.
Availability
1PMT5954E3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, motor control systems, programmable logic controllers, and telecom line interface designs requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5954E3/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 for surface-mount power regulation and transient suppression in space-constrained, thermally demanding industrial environments - emphasizing thermal efficiency, ESD resilience, and automated manufacturability.
FAQ
What is the Zener voltage tolerance for 1PMT5954E3/TR7?
The 1PMT5954E3/TR7 has a standard Zener voltage tolerance of ±5% at 160 V, measured at IZT = 2.3 mA with TAB 1 temperature held at 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the base part number 1PMT5954E3/TR7 specifies ±5%.
How is thermal management implemented in the 1PMT5954E3/TR7 package?
The 1PMT5954E3/TR7 uses a Powermite® package with a full metallic bottom and integral heat sink locking tab (TAB 1). This design provides a low-thermal-resistance path (30°C/W junction-to-TAB) directly to the PCB copper, enabling efficient heat transfer without external heatsinks - critical for sustaining its 3.0 W power rating.
Is the 1PMT5954E3/TR7 compatible with automated SMT assembly processes?
Yes, the 1PMT5954E3/TR7 is fully compatible with automated insertion and reflow soldering. It ships in EIA-481 compliant tape-and-reel format (3,000 pcs per 7″ reel), and its Powermite® package features a locking tab and flux-free metallic bottom - both engineered to prevent misalignment and solder voids during high-volume SMT production.
What is the maximum reverse leakage current for 1PMT5954E3/TR7 at rated voltage?
The maximum reverse leakage current (IR) for 1PMT5954E3/TR7 is 1 µA at VR = 121.6 V, as specified in the Electrical Characteristics table. This low leakage supports reliable operation in high-impedance sensing and battery-backed circuits where standby current must be minimized.
Does the 1PMT5954E3/TR7 meet any industry-standard ESD ratings?
Yes, the 1PMT5954E3/TR7 is rated for >16 kV per the Human Body Model (HBM), as confirmed in the FEATURES section of the MSC0995.PDF datasheet. This high ESD rating ensures robust handling during manufacturing and field operation in electrically noisy industrial environments.
1PMT5954E3/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):
- 160 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 700 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 121.6 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
1PMT5954E3/TR7 FAQ
1.How can I place an order for 1PMT5954E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5954E3/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 1PMT5954E3/TR7 reliable?
The price and inventory of 1PMT5954E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5954E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5954E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5954E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5954E3/TR7?
1PMT5954E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5954E3/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 1PMT5954E3/TR7?
For technical support, including 1PMT5954E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5954E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5954E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5954E3/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 1PMT5954E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5954E3/TR7?
All 1PMT5954E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5954E3/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 1PMT5954E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5954E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5954E3/TR7 Tags
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