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Microchip Technology 1PMT5941AE3/TR7
- Part No.:
- 1PMT5941AE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941AE3/TR7.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,928
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Product details
Overview
1PMT5941AE3/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 of industrial control modules.
For engineers reviewing the 1PMT5941AE3/TR7 datasheet, 1PMT5941AE3/TR7 pinout, 1PMT5941AE3/TR7 application, or 1PMT5941AE3/TR7 equivalent, key selection criteria include its 47 V nominal Zener voltage, 3.0 W thermal capability via metallic tab, DO-216 mechanical outline, ESD rating >16 kV HBM, and compatibility with automated SMT placement equipment.
Technical Context
This device operates as a two-terminal voltage-regulating diode with cathode designated by TAB 1. Its Zener breakdown is specified at 8.0 mA (IZT), with knee current IZK = 0.25 mA and knee impedance ZZK = 1000 Ω - enabling stable regulation even near threshold conduction.
The Powermite® package integrates a full metallic bottom and locking tab that functions as both mechanical anchor and thermal path to PCB copper, achieving 30°C/W junction-to-TAB thermal resistance. It complies with EIA-481 tape-and-reel packaging for automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 47 V ±5% at IZT = 8.0 mA, TL = 30°C - defines primary regulation setpoint under standard test conditions |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - maximum continuous DC power handling with tab heatsinking |
| Dynamic Impedance ZZT | 67 Ω at IZT = 8.0 mA - low AC impedance ensures minimal output voltage variation under load transients |
| Reverse Leakage IR | <1 µA at VR = 35.8 V - guarantees high off-state blocking integrity below breakdown |
| Thermal Resistance | 30°C/W junction-to-TAB - enables predictable thermal design when mounting tab to copper pour |
| ESD Rating | >16 kV per HBM - supports robust handling in uncontrolled manufacturing environments |
| Knee Current IZK | 0.25 mA - minimum current required to enter usable regulation region with ZZK = 1000 Ω |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount package with full metallic bottom and integral heat-sink locking tab; cathode identified by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary cathode terminal and thermal interface; must be soldered to PCB copper for rated 3.0 W dissipation |
| Lead 2 | Anode | Standard anode connection; electrically isolated from TAB 1; no thermal function |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling comparable to through-hole DO-41 devices |
| Integral heat-sink locking tab | Provides mechanical retention during reflow and direct thermal conduction path from junction to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment risk during assembly, improving long-term reliability and void-free solder joints |
| ESD robustness & tight tolerance option | Rated >16 kV HBM; ±5% standard, with ±2% (suffix C) and ±1% (suffix D) available for precision references |
Applications
| Industrial Power Supply Monitoring | Automotive Body Control Module Clamp |
|---|---|
Use Scenario: Monitoring 48 V DC bus in programmable logic controller (PLC) backplane to detect overvoltage faults. IC Role / Device Role / Timing Role: Zener clamping diode placed across rail to shunt excess energy into protection circuitry before downstream ICs are damaged. Use Value: 47 V breakdown precisely matches system fault threshold; 3.0 W rating sustains transient surges without thermal runaway. | Use Scenario: Protecting microcontroller I/O pins from load-dump spikes in 12 V automotive body electronics. IC Role / Device Role / Timing Role: Standoff voltage limiter on LIN bus line or sensor input, absorbing 100 ms, 30 V transients. Use Value: Low 1 µA leakage preserves signal integrity at rest; DO-216 footprint fits tight space constraints near connectors. |
| Programmable Logic Relay Reference | Medical Infusion Pump Voltage Setpoint |
Use Scenario: Providing stable 47 V reference for analog comparators in solid-state relay driver stages. IC Role / Device Role / Timing Role: Precision voltage reference source feeding op-amp feedback network to define trip point. Use Value: ±5% tolerance and 67 Ω dynamic impedance ensure consistent comparator hysteresis across temperature and production lots. | Use Scenario: Setting regulated bias voltage for motor driver FET gate control in battery-powered infusion pumps. IC Role / Device Role / Timing Role: Zener-based voltage divider element establishing fixed gate drive level independent of battery sag. Use Value: 30°C/W thermal resistance allows reliable operation inside sealed enclosure; >16 kV HBM prevents ESD-induced failure during service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF47A (ON Semiconductor) | 47 V, 1.0 W, SOD-123 package, 100 Ω ZZT, 35°C/W θJA | Lower power rating limits use to sub-1 W clamping; smaller footprint but less thermal margin | Select when board space is critical and peak surge energy is ≤1 J |
| BZX84-C47 (Diodes Inc.) | 47 V, 300 mW, SOT-23, 100 Ω ZZT, ±5% tolerance, 350°C/W θJA | Not suitable for sustained 3.0 W dissipation; requires external heatsinking for >100 mW | Choose only for low-power reference or signal-level clamping where thermal mass is unavailable |
Compared with SMF47A and BZX84-C47, the 1PMT5941AE3/TR7 delivers 3× higher power handling and 10× lower thermal resistance via its metal-tab construction - making it uniquely suited for industrial-grade transient suppression where sustained energy absorption and thermal stability are mandatory.
Availability
1PMT5941AE3/TR7 is available at Aetrix Electronics and suitable for industrial power supply monitoring, automotive body control module clamp, and programmable logic relay reference requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5941AE3/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 series - including the 1PMT5941AE3/TR7 - was engineered for ruggedized surface-mount voltage regulation in harsh-environment power systems where thermal performance and ESD immunity are non-negotiable.
FAQ
What is the Zener voltage tolerance for 1PMT5941AE3/TR7?
The 1PMT5941AE3/TR7 has a standard Zener voltage tolerance of ±5% at 47 V, measured at IZT = 8.0 mA and TAB temperature = 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available as custom order options, but the E3/TR7 suffix denotes the standard ±5% version. This tolerance directly impacts regulation accuracy in precision reference designs.
How is thermal performance defined for 1PMT5941AE3/TR7?
Thermal performance of the 1PMT5941AE3/TR7 is specified as 30°C/W junction-to-TAB thermal resistance. This means the device can dissipate its full 3.0 W rating only when TAB 1 is maintained at ≤60°C - requiring adequate PCB copper area and thermal vias. Without proper tab heatsinking, power derating is mandatory per the manufacturer's thermal curves.
Is 1PMT5941AE3/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5941AE3/TR7 is qualified for standard lead-free reflow profiles, including JEDEC J-STD-020-compliant peak temperatures up to 260°C. Its Powermite® package uses matte tin-plated leads and thermally stable molding compound, and the full metallic bottom enhances thermal uniformity during ramp-up - reducing risk of delamination or voiding.
What does the "TR7" suffix indicate in 1PMT5941AE3/TR7?
The "TR7" suffix in 1PMT5941AE3/TR7 indicates tape-and-reel packaging per EIA-481 standard, with 3,000 units per 7-inch reel. The "E3" denotes compliance with RoHS Directive 2011/65/EU and halogen-free materials. Together, E3/TR7 confirms environmental compliance and automated assembly readiness - critical for high-volume SMT lines.
Can 1PMT5941AE3/TR7 be used as a replacement for through-hole Zeners like 1N5284B?
No, the 1PMT5941AE3/TR7 is not a drop-in replacement for 1N5284B due to fundamental differences in package, thermal path, and mounting. While both are 47 V Zeners, the 1N5284B is a DO-35 through-hole device rated for 500 mW, whereas the 1PMT5941AE3/TR7 is a DO-216 surface-mount device rated for 3.0 W with tab-based heatsinking. PCB redesign and thermal validation are required.
1PMT5941AE3/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
1PMT5941AE3/TR7 FAQ
1.How can I place an order for 1PMT5941AE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941AE3/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 1PMT5941AE3/TR7 reliable?
The price and inventory of 1PMT5941AE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941AE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5941AE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941AE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941AE3/TR7?
1PMT5941AE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941AE3/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 1PMT5941AE3/TR7?
For technical support, including 1PMT5941AE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941AE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5941AE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941AE3/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 1PMT5941AE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5941AE3/TR7?
All 1PMT5941AE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941AE3/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 1PMT5941AE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5941AE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941AE3/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
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MMSZ5231B-7-F
Diodes Incorporated
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