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Microchip Technology 1PMT5941A/TR7
- Part No.:
- 1PMT5941A/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941A/TR7.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,518
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Product details
Overview
1PMT5941A/TR7 from Microsemi is a 47 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 67 Ω dynamic impedance at 8.0 mA test current and <1 µA reverse leakage at 35.8 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails and regulator feedback networks.
For engineers reviewing the 1PMT5941A/TR7 datasheet, 1PMT5941A/TR7 pinout, 1PMT5941A/TR7 application, or 1PMT5941A/TR7 equivalent, key selection criteria include zener voltage accuracy, 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 device operates as a two-terminal voltage-regulating diode with sharp reverse breakdown at 47 V nominal. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical stability during reflow.
Electrical behavior is characterized at TL = 30°C with defined test conditions: IZT = 8.0 mA, VR = 35.8 V (max), IR ≤ 1 µA, and ZZK = 0.25 Ω at IZK = 0.25 mA - confirming stable regulation across low-current and high-precision biasing scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±5% at IZT = 8.0 mA - sets precise clamping/reference level in feedback loops |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation without external heatsink in compact layouts |
| Dynamic Impedance (ZZT) | 67 Ω at IZT = 8.0 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤1 µA at VR = 35.8 V - guarantees low quiescent current in standby or battery-powered circuits |
| Thermal Resistance | 30°C/W junction-to-TAB - supports predictable thermal design with direct PCB copper pad conduction |
| ESD Rating | >16 kV per Human Body Model - provides inherent protection against handling-induced discharge events |
Pinout & Package
The 1PMT5941A/TR7 uses a DO-216 (Powermite®) surface-mount package with molded body and full metallic bottom. Cathode is designated by TAB 1; anode is the opposite terminal. Mounting orientation is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and voltage reference node; must be connected to thermal pad or ground plane |
| Opposite Terminal | Anode | Current entry point during reverse-bias operation; connects to regulated rail or feedback node |
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 | Improves thermal transfer to PCB copper and prevents component rotation during soldering |
| Full metallic bottom | Eliminates solder flux entrapment risk and enhances thermal reliability in high-volume production |
| ESD robustness >16 kV HBM | Reduces need for external ESD protection in board-level transient suppression designs |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback or buck converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener reference element setting output voltage threshold via optocoupler bias network. Use Value: Tight 47 V tolerance and low ZZT ensure ±1% output regulation accuracy under line/load variations. | Use Scenario: Clamping surge-induced transients on 36–42 V industrial control bus lines. IC Role / Device Role / Timing Role: Standby shunt protector absorbing energy above safe operating voltage. Use Value: 3.0 W rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway. |
| Programmable Reference Source | Temperature-Stable Bias Network |
Use Scenario: Providing fixed reference for analog sensor signal conditioning in automotive cabin modules. IC Role / Device Role / Timing Role: Precision voltage source for ADC reference divider or op-amp biasing. Use Value: Low IR (<1 µA) minimizes current error in high-impedance divider networks. | Use Scenario: Establishing stable bias current for RF amplifier stages in telecom infrastructure. IC Role / Device Role / Timing Role: Temperature-compensated current source element using matched Zener/BJT topology. Use Value: Junction temperature range of –55°C to +150°C supports operation in sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4752A | Same 47 V nominal, but DO-41 through-hole package; 1.0 W rating; higher thermal resistance (~65°C/W) | Requires manual or wave-solder assembly; unsuitable for high-density SMT layouts | Select only when legacy through-hole compatibility or lower-cost procurement is prioritized over thermal performance |
| BZX84-C47 | SOT-23 package; 47 V ±5%; 300 mW rating; no metallic thermal tab; 250°C/W junction-to-air | Limited to low-power signal-level clamping; cannot sustain 3.0 W continuous dissipation | Choose for space-constrained logic-level protection where power handling is secondary |
Compared with 1N4752A and BZX84-C47, the 1PMT5941A/TR7 uniquely combines 3.0 W SMT power handling, 30°C/W thermal resistance, and ESD-hardened construction - making it the only option suitable for industrial-grade DC rail clamping with automated manufacturing requirements.
Availability
1PMT5941A/TR7 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and programmable reference source designs requiring stable component supply and long-term manufacturability.
Supply support for 1PMT5941A/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-tolerant components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was designed to deliver high-power surface-mount voltage regulation in harsh environments - emphasizing thermal robustness, ESD immunity, and automated assembly compatibility.
FAQ
What is the zener voltage tolerance for 1PMT5941A/TR7?
The 1PMT5941A/TR7 has a standard zener voltage tolerance of ±5% at 47 V, measured at IZT = 8.0 mA with TAB 1 temperature held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the base part number 1PMT5941A/TR7 specifies ±5%.
How is thermal management handled in the 1PMT5941A/TR7 package?
The 1PMT5941A/TR7 uses a Powermite® package with a full metallic bottom and integral locking tab that directly conducts heat from the junction to the PCB copper pad. Its specified thermal resistance is 30°C/W junction-to-TAB, enabling reliable 3.0 W operation when mounted on ≥1 cm² of 2-oz copper with thermal vias.
Is 1PMT5941A/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5941A/TR7 is qualified for lead-free reflow soldering per J-STD-020. Its molded package and metallic terminations withstand peak temperatures up to 260°C for 10 seconds. The device's maximum junction temperature rating of +150°C further supports compatibility with standard Pb-free thermal profiles.
What does the "TR7" suffix indicate in 1PMT5941A/TR7?
The "TR7" suffix denotes tape-and-reel packaging per EIA Standard 481, with 7-inch reels containing 3,000 units. This format ensures compatibility with high-speed pick-and-place equipment and supports automated SMT assembly lines without manual handling or bulk feeding.
Can 1PMT5941A/TR7 be used in place of older through-hole Zeners like 1N4752A?
While both devices share a 47 V nominal zener voltage, the 1PMT5941A/TR7 is not a drop-in replacement due to its surface-mount Powermite® package, 3.0 W rating, and thermal interface requirements. PCB layout redesign and thermal pad implementation are necessary - unlike the through-hole 1N4752A which relies on leads for heat dissipation.
1PMT5941A/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):
- 47 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 67 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 35.8 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
1PMT5941A/TR7 FAQ
1.How can I place an order for 1PMT5941A/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941A/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 1PMT5941A/TR7 reliable?
The price and inventory of 1PMT5941A/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941A/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5941A/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941A/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941A/TR7?
1PMT5941A/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941A/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 1PMT5941A/TR7?
For technical support, including 1PMT5941A/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941A/TR7 requirements.
6.How does Aetrix verify that 1PMT5941A/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941A/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 1PMT5941A/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5941A/TR7?
All 1PMT5941A/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941A/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 1PMT5941A/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5941A/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941A/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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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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