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Microchip Technology 1PMT5941BE3/TR7
- Part No.:
- 1PMT5941BE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941BE3/TR7.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,071
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Product details
Overview
1PMT5941BE3/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 1PMT5941BE3/TR7 datasheet, 1PMT5941BE3/TR7 pinout, 1PMT5941BE3/TR7 application, or 1PMT5941BE3/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 per EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical stability during reflow soldering.
The device exhibits low reverse leakage (<1 µA at VR = 35.8 V), 30°C/W thermal resistance from junction to TAB 1, and a 16 kV human-body-model ESD rating - enabling reliable operation in noisy industrial environments without external protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±5% at IZT = 8.0 mA, TC = 30°C - defines stable regulation point for feedback or clamping circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without derating in compact layouts |
| Dynamic Impedance (ZZT) | 67 Ω at IZT = 8.0 mA - ensures minimal output voltage variation under load current shifts |
| Reverse Leakage (IR) | <1 µA at VR = 35.8 V - reduces standby power loss in battery-backed or low-power systems |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - allows direct thermal coupling to PCB copper pour or heatsink for sustained 3 W operation |
| ESD Rating | >16 kV per Human Body Model - eliminates need for discrete ESD protection in front-end power interfaces |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1; mounting position unrestricted; 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 3.0 W dissipation |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; used for series connection in voltage-reference networks |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term solder joint reliability and yield |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| EIA-481 tape-and-reel packaging | Enables seamless integration with high-speed pick-and-place equipment for automated SMT production |
| 16 kV HBM ESD rating | Withstands electrostatic discharge events common in factory handling and field deployment without degradation |
Applications
| Industrial Power Supply Monitoring | Automated Test Equipment (ATE) Reference |
|---|---|
Use Scenario: Real-time monitoring of +48 V DC distribution bus in programmable logic controller (PLC) backplanes. IC Role / Device Role / Timing Role: Zener clamping element protecting ADC input stage from overvoltage transients. Use Value: Maintains signal integrity with <1 µA leakage at 35.8 V, preventing measurement drift during brownout conditions. | Use Scenario: Precision voltage reference for 16-bit DAC calibration in semiconductor wafer probers. IC Role / Device Role / Timing Role: Stable 47 V reference source for current-source biasing in analog stimulus circuits. Use Value: ±5% VZ tolerance and 67 Ω ZZT ensure repeatable calibration accuracy across temperature and aging. |
| Telecom Line Card Protection | Medical Imaging Power Sequencing |
Use Scenario: Overvoltage clamp on -48 V telecom power feed lines exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt regulator absorbing transient energy before downstream DC/DC converters. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow safe dissipation of 10/1000 µs surge waveforms without thermal runaway. | Use Scenario: Voltage supervision node in MRI gradient amplifier power sequencing logic. IC Role / Device Role / Timing Role: Threshold detector triggering enable signals when +47 V auxiliary rail reaches regulation. Use Value: Tight 47 V nominal Zener voltage provides deterministic turn-on timing within ±0.5 V across -55°C to +150°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF47A-E3/57T | 47 V, 1.0 W, DO-219AB package, 100 Ω ZZT, 1000 µA IR at 35.8 V | Lower power rating and higher leakage limit suitability for low-duty-cycle sensing only | Select when board space is constrained and thermal budget permits ≤1 W continuous dissipation |
| 1N5368BRLG | 47 V, 5.0 W, DO-201AD package, 60 Ω ZZT, 10 µA IR at 35.8 V, through-hole mount | Higher power but incompatible with SMT automation; requires manual or wave soldering | Select when system-level thermal design supports larger heatsinking and assembly process allows through-hole components |
Compared with SMF47A-E3/57T and 1N5368BRLG, the 1PMT5941BE3/TR7 uniquely balances 3.0 W SMT-compatible power handling, ultra-low leakage, and integrated thermal management - making it optimal for high-reliability automated production of industrial power interfaces.
Availability
1PMT5941BE3/TR7 is available at Aetrix Electronics and suitable for industrial power supply monitoring, automated test equipment reference design, and telecom line card protection requiring stable component supply and consistent Zener voltage performance across temperature extremes.
Supply support for 1PMT5941BE3/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 engineered to deliver high-power surface-mount voltage regulation with superior thermal performance and automated assembly compatibility - targeting space-constrained, thermally demanding applications in industrial control and infrastructure equipment.
FAQ
What is the Zener voltage tolerance for 1PMT5941BE3/TR7?
The 1PMT5941BE3/TR7 has a standard Zener voltage tolerance of ±5% at 47 V, measured at 8.0 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the E3/TR7 variant uses the standard ±5% specification.
How is thermal management handled in the 1PMT5941BE3/TR7 package?
The 1PMT5941BE3/TR7 uses the Powermite® package with a full metallic bottom and integral locking tab that serves as both mechanical anchor and primary thermal path. Its 30°C/W junction-to-TAB 1 thermal resistance requires direct soldering of TAB 1 to a copper thermal pad to achieve the full 3.0 W power rating at TAB 1 = 60°C.
Is 1PMT5941BE3/TR7 compatible with automated SMT assembly processes?
Yes, the 1PMT5941BE3/TR7 is supplied in EIA-481 compliant tape-and-reel format (7-inch reel, 3,000 pieces), and its Powermite® package geometry and locking tab design are optimized for reliable pickup, placement, and reflow soldering in high-speed automated SMT lines without tombstoning or misalignment.
What is the maximum reverse leakage current for 1PMT5941BE3/TR7?
The maximum reverse leakage current for 1PMT5941BE3/TR7 is <1 µA at a reverse voltage of 35.8 V and ambient temperature of 30°C. This low leakage supports precision voltage reference applications where standby current and measurement accuracy are critical.
Does 1PMT5941BE3/TR7 meet any ESD immunity standards?
Yes, the 1PMT5941BE3/TR7 is rated for >16 kV per the Human Body Model (HBM) ESD test standard. This high immunity level allows direct use in unshielded industrial interfaces without additional ESD protection components, reducing BOM count and layout complexity.
1PMT5941BE3/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:
- ±5%
- 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
1PMT5941BE3/TR7 FAQ
1.How can I place an order for 1PMT5941BE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941BE3/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 1PMT5941BE3/TR7 reliable?
The price and inventory of 1PMT5941BE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941BE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5941BE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941BE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941BE3/TR7?
1PMT5941BE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941BE3/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 1PMT5941BE3/TR7?
For technical support, including 1PMT5941BE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941BE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5941BE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941BE3/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 1PMT5941BE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5941BE3/TR7?
All 1PMT5941BE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941BE3/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 1PMT5941BE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5941BE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941BE3/TR7 Tags
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