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Microchip Technology 1PMT5947CE3/TR7
- Part No.:
- 1PMT5947CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5947CE3/TR7.pdf
- Description:
- DIODE ZENER 82V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,285
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Product details
Overview
1PMT5947CE3/TR7 from Microsemi is a 82 V, ±5% tolerance surface-mount Zener diode in Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 4.6 mA test current (IZT), 160 Ω dynamic impedance (ZZT), and 1 µA max reverse leakage at 62.2 V. It serves as a precision voltage reference or overvoltage clamp in power supply regulation circuits.
For engineers reviewing the 1PMT5947CE3/TR7 datasheet, 1PMT5947CE3/TR7 pinout, 1PMT5947CE3/TR7 application, or 1PMT5947CE3/TR7 equivalent, key selection criteria include zener voltage tolerance, 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 in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its Powermite® package features a full metallic bottom and integral heat sink locking tab, enabling efficient thermal conduction from junction to PCB via TAB 1.
Electrical behavior is defined at TL = 30°C with IZT = 4.6 mA; voltage drift versus current deviation follows Microsemi Note 202. Reverse leakage remains ≤1 µA up to VR = 62.2 V, and dynamic impedance is measured using 60 Hz RMS AC superimposed on IZT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 82 V ±5% - precise clamping/reference level at IZT = 4.6 mA |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - defines maximum continuous thermal load in PCB-mounted condition |
| Dynamic Impedance (ZZT) | 160 Ω - low AC impedance ensures minimal voltage variation under ripple or transient current changes |
| Knee Impedance (ZZK) | 0.25 Ω - indicates sharp turn-on characteristic near breakdown threshold |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables accurate thermal design when TAB 1 is soldered to copper pour |
| ESD Rating | >16 kV HBM - robust handling in automated manufacturing without additional protection circuitry |
| Reverse Leakage (IR) | ≤1 µA at VR = 62.2 V - ensures low standby power loss in high-impedance bias networks |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode designated by TAB 1; weight ≈ 0.016 g; mechanical outline per DO-216 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection; must be soldered to PCB copper for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; used for circuit connection and mechanical anchoring |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| 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 stability and direct thermal conduction path from junction to PCB ground plane |
| ESD robustness | >16 kV Human Body Model rating reduces need for external ESD protection in board-level design |
| Tight voltage tolerance option | ±5% standard; ±2% (suffix C) and ±1% (suffix D) available for precision reference applications |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in optocoupler feedback loop of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference providing stable 82 V threshold to drive optocoupler LED. Use Value: Tight 82 V ±5% tolerance ensures consistent regulation setpoint; 160 Ω ZZT minimizes output ripple sensitivity. | Use Scenario: Placed across sensitive input rails to shunt transient surges exceeding 62.2 V. IC Role / Device Role / Timing Role: Fast-acting voltage clamp limiting peak rail voltage during ESD or load-dump events. Use Value: 1 µA IR at 62.2 V prevents loading of upstream circuitry; >16 kV HBM withstands handling-induced discharges. |
| Industrial Sensor Biasing | Programmable Voltage Reference |
Use Scenario: Supplies stable bias to analog front-end amplifiers in 4–20 mA transmitter modules. IC Role / Device Role / Timing Role: Precision voltage source establishing reference point for current-loop scaling. Use Value: Low 0.25 Ω ZZK ensures stable turn-on near nominal voltage; 30°C/W thermal resistance supports operation in sealed enclosures. | Use Scenario: Configured with series resistors to generate custom reference voltages in calibration circuits. IC Role / Device Role / Timing Role: Programmable node defining multiple voltage thresholds via resistor divider networks. Use Value: 4.6 mA IZT allows predictable current sourcing; ±5% tolerance supports mid-accuracy calibration without trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5947BRLG | Same 82 V nominal voltage, but TO-220 package; higher thermal resistance (~50°C/W); no metallic bottom or locking tab | Requires heatsink for 3 W operation; unsuitable for high-density SMT layouts | Select when through-hole mounting or discrete heatsinking is preferred |
| BZX84-C82LT1G | 82 V ±5%, SOT-23 package; 350 mW rating; 200 Ω ZZT; 100 nA IR at 66 V | Limited to low-power biasing; insufficient for 3 W clamping or regulation | Select only for space-constrained, sub-500 mW reference applications |
Compared with 1PMT5947CE3/TR7, 1N5947BRLG offers identical voltage but lacks SMT optimization and thermal efficiency, while BZX84-C82LT1G sacrifices power capability for footprint reduction-making 1PMT5947CE3/TR7 the sole choice for 3 W SMT Zener regulation requiring robust thermal and ESD performance.
Availability
1PMT5947CE3/TR7 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial overvoltage protection circuits, and sensor biasing applications requiring stable component supply and traceable sourcing.
Supply support for 1PMT5947CE3/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.
The Powermite® Zener diode product line was designed for high-power surface-mount voltage regulation and clamping in industrial, aerospace, and telecom power systems where thermal performance and assembly robustness are critical.
FAQ
What is the zener voltage tolerance for 1PMT5947CE3/TR7?
The 1PMT5947CE3/TR7 has a standard zener voltage tolerance of ±5% at 82 V, measured at IZT = 4.6 mA 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 feedback loops and reference circuits where 1PMT5947CE3/TR7 is deployed.
How is thermal performance specified for 1PMT5947CE3/TR7?
1PMT5947CE3/TR7 specifies a thermal resistance of 30°C/W from junction to TAB 1. This means that with TAB 1 soldered to adequate PCB copper, the device can dissipate its full 3.0 W rating at ambient temperatures up to 60°C. Exceeding this thermal limit reduces safe operating current and may cause premature failure of the 1PMT5947CE3/TR7.
Is 1PMT5947CE3/TR7 compatible with lead-free reflow processes?
Yes, 1PMT5947CE3/TR7 is qualified for standard lead-free reflow profiles per J-STD-020. Its Powermite® package withstands peak temperatures up to 260°C for 10 seconds. The full metallic bottom and molded construction ensure mechanical integrity and void-free solder joints during reflow-critical for reliable long-term operation of the 1PMT5947CE3/TR7 in production environments.
What does the 'E3/TR7' suffix indicate in 1PMT5947CE3/TR7?
The 'E3' denotes tape-and-reel packaging per EIA-481 standard, and 'TR7' specifies a 7-inch reel containing 3,000 units. This packaging format ensures compatibility with high-speed pick-and-place equipment and supports automated SMT assembly lines where consistent feeding and placement of the 1PMT5947CE3/TR7 are required.
Can 1PMT5947CE3/TR7 be used as a replacement for through-hole Zener diodes like 1N5947B?
While 1PMT5947CE3/TR7 shares the same 82 V nominal zener voltage as 1N5947B, it is not a drop-in replacement due to different package (Powermite® vs. DO-41), thermal path (TAB 1 conduction vs. lead conduction), and mounting method. Substituting 1PMT5947CE3/TR7 requires PCB redesign to accommodate its surface-mount footprint and thermal pad layout-essential for maintaining performance and reliability of the 1PMT5947CE3/TR7.
1PMT5947CE3/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):
- 82 V
- Tolerance:
- ±2%
- 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
1PMT5947CE3/TR7 FAQ
1.How can I place an order for 1PMT5947CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5947CE3/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 1PMT5947CE3/TR7 reliable?
The price and inventory of 1PMT5947CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5947CE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5947CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5947CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5947CE3/TR7?
1PMT5947CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5947CE3/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 1PMT5947CE3/TR7?
For technical support, including 1PMT5947CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5947CE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5947CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5947CE3/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 1PMT5947CE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5947CE3/TR7?
All 1PMT5947CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5947CE3/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 1PMT5947CE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5947CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5947CE3/TR7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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