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Microchip Technology 1PMT5947A/TR13
- Part No.:
- 1PMT5947A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5947A/TR13.pdf
- Description:
- DIODE ZENER 82V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
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Product details
Overview
1PMT5947A/TR13 from Microsemi is a 3.0 W surface-mount Zener diode in the Powermite® package, rated for 82 V nominal zener voltage at 4.6 mA test current, with 160 Ω dynamic impedance and 2500 µA max reverse leakage at 62.2 V. It serves as a precision voltage reference or overvoltage clamp in power supply regulation and transient protection circuits.
For engineers reviewing the 1PMT5947A/TR13 datasheet, 1PMT5947A/TR13 pinout, 1PMT5947A/TR13 application, or 1PMT5947A/TR13 equivalent, key selection criteria include its 82 V zener voltage tolerance (±5%), 30°C/W junction-to-tab thermal resistance, ESD rating >16 kV HBM, and compatibility with automated SMT assembly using EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across load variations and temperature shifts from –55°C to +150°C. Its full metallic bottom and integral heat sink tab (TAB 1) enable efficient thermal conduction to the PCB, supporting continuous 3.0 W dissipation when TAB 1 is held at ≤60°C.
The device exhibits low knee impedance (≤160 Ω at IZT) and tight regulation at low currents (IZK = 0.25 mA), making it suitable for low-power reference applications where stability under light-load conditions is critical. Reverse leakage remains ≤2500 µA up to 62.2 V, ensuring minimal standby current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 82 V ±5% at 4.6 mA - defines precise clamping/reference level in regulated supplies |
| Power Dissipation | 3.0 W with TAB 1 at 60°C - enables high-power density SMT operation without external heatsink |
| Dynamic Impedance (ZZT) | 160 Ω at 4.6 mA - ensures minimal output voltage variation under load current changes |
| Reverse Leakage (IR) | ≤2500 µA at 62.2 V - guarantees low quiescent current in standby or sensing circuits |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows accurate thermal design when mounting on copper pour or thermal pad |
| ESD Rating | >16 kV per HBM - provides robust handling during automated assembly and board-level integration |
| Junction Temp Range | –55°C to +150°C - supports operation in automotive under-hood and industrial control environments |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode designated by TAB 1; DO-216 outline; weight ≈0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical cathode connection; must be soldered to thermal pad for rated power handling |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1; requires standard SMT reflow profile |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in footprint smaller than DO-41 |
| Integral heat sink locking tab | TAB 1 acts as both cathode and primary thermal interface-reduces thermal resistance to PCB by >40% vs. standard SOD packages |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and void-free solder joints |
| ESD robustness | >16 kV HBM rating reduces need for external ESD protection in input-stage clamping designs |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Stabilizing 5 V or 12 V rail references in isolated DC-DC converters with wide input transients. IC Role / Device Role / Timing Role: Zener reference diode providing precise voltage threshold for feedback loop error amplifiers. Use Value: 82 V rating allows safe clamping of reflected flyback spikes; 30°C/W thermal resistance maintains regulation accuracy under 70°C ambient. | Use Scenario: Overvoltage protection on LIN bus or sensor supply lines exposed to load-dump events. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping line voltage to prevent damage to microcontroller I/O pins. Use Value: 2500 µA leakage at 62.2 V ensures no interference with 12 V bus signaling; >16 kV HBM withstands ESD during connector mating. |
| Medical Diagnostic Equipment | Telecom Line Card Protection |
Use Scenario: Reference voltage source for analog front-end ADC biasing in portable ultrasound signal chains. IC Role / Device Role / Timing Role: Precision Zener establishing stable 2.5 V or 5 V reference via resistor divider from higher rail. Use Value: Tight 5% tolerance and low ZZT (160 Ω) minimize reference drift across temperature; DO-216 footprint fits high-density PCB layouts. | Use Scenario: Secondary surge clamp on -48 V telecom power feed before DC/DC conversion stages. IC Role / Device Role / Timing Role: High-energy Zener shunt protecting downstream PMICs from sustained overvoltage faults. Use Value: 3.0 W continuous dissipation handles prolonged 60 V surges; metallic bottom ensures reliable thermal coupling to chassis ground plane. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5252B | 250 mW SOT-23 package; 82 V ±5%; 1000 Ω ZZT; 100 µA IR @ 65.6 V | Limited to low-power biasing; unsuitable for >0.5 W clamping | Select for space-constrained logic-level references where thermal mass is not required |
| Vishay SZ1SMA5947E-TR | 1.5 W SMA package; 82 V ±5%; 150 Ω ZZT; 2500 µA IR @ 62.2 V; same DO-216 outline | Lower power rating limits sustained surge handling in industrial power rails | Select when 1.5 W peak clamping suffices and cost sensitivity outweighs thermal margin needs |
Compared with MMBZ5252B and SZ1SMA5947E-TR, the 1PMT5947A/TR13 delivers triple the power handling (3.0 W), superior thermal management via TAB 1, and identical 82 V/±5% specification-making it the only option qualified for high-reliability, thermally demanding Zener applications requiring sustained energy absorption.
Availability
1PMT5947A/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive body control modules, medical diagnostic equipment, and telecom line card protection requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5947A/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 designed to deliver high-power SMT Zener performance in miniature packages for mission-critical power conditioning and protection in harsh-environment systems.
FAQ
What is the zener voltage tolerance for 1PMT5947A/TR13?
The 1PMT5947A/TR13 has a standard zener voltage tolerance of ±5% at 82 V nominal, measured at 4.6 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the base part number 1PMT5947A/TR13 specifies ±5%.
How is thermal management handled in the 1PMT5947A/TR13 package?
The 1PMT5947A/TR13 uses TAB 1 as both cathode and primary thermal interface, with a specified junction-to-TAB thermal resistance of 30°C/W. Its full metallic bottom and integral locking tab ensure direct conduction to the PCB thermal pad, enabling full 3.0 W dissipation when TAB 1 is maintained at ≤60°C.
Is the 1PMT5947A/TR13 compatible with automated SMT assembly processes?
Yes, the 1PMT5947A/TR13 is fully compatible with automated insertion and reflow processes. It ships in EIA-481 tape-and-reel format (13-inch reel, 12,000 pieces), and its Powermite® package features a unique locking tab that prevents rotation during placement and eliminates solder flux entrapment due to its full metallic bottom.
What is the maximum reverse leakage current for 1PMT5947A/TR13?
The maximum reverse leakage current for 1PMT5947A/TR13 is 2500 µA at a reverse voltage of 62.2 V and ambient temperature of 30°C. This value is specified in the Electrical Characteristics table and reflects worst-case leakage under defined test conditions.
Does the 1PMT5947A/TR13 meet any ESD immunity standards?
Yes, the 1PMT5947A/TR13 is rated for >16 kV electrostatic discharge per the Human Body Model (HBM), as confirmed in the FEATURES section of the MSC0995.PDF datasheet. This rating applies to both terminals and supports robust handling during manufacturing and field deployment.
1PMT5947A/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):
- 82 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 160 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 62.2 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
1PMT5947A/TR13 FAQ
1.How can I place an order for 1PMT5947A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5947A/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 1PMT5947A/TR13 reliable?
The price and inventory of 1PMT5947A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5947A/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5947A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5947A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5947A/TR13?
1PMT5947A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5947A/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 1PMT5947A/TR13?
For technical support, including 1PMT5947A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5947A/TR13 requirements.
6.How does Aetrix verify that 1PMT5947A/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5947A/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 1PMT5947A/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5947A/TR13?
All 1PMT5947A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5947A/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 1PMT5947A/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5947A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5947A/TR13 Tags
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MM5Z5V1ST1G
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