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Microchip Technology 1PMT5941E3/TR7
- Part No.:
- 1PMT5941E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941E3/TR7.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,651
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Product details
Overview
1PMT5941E3/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 paths.
For engineers reviewing the 1PMT5941E3/TR7 datasheet, 1PMT5941E3/TR7 pinout, 1PMT5941E3/TR7 application, or 1PMT5941E3/TR7 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (30°C/W junction-to-TAB), ESD robustness (>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 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 knee impedance (≤1000 Ω at IZK = 0.25 mA) and maintains stable Zener voltage under ambient temperatures from –55°C to +150°C, supporting use in industrial and automotive environments where thermal cycling and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±5% at IZT = 8.0 mA - defines nominal clamping/reference level |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling |
| Dynamic Impedance (ZZT) | 67 Ω at IZT = 8.0 mA - determines voltage regulation sensitivity to current changes |
| Reverse Leakage (IR) | <1 µA at VR = 35.8 V - ensures minimal standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB - enables thermal design with known temperature rise per watt |
| ESD Rating | >16 kV HBM - supports robust handling in unshielded manufacturing and field environments |
| Junction Temp Range | –55°C to +150°C - qualifies for extended industrial and under-hood applications |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be thermally anchored to PCB copper for rated power dissipation |
| Lead 2 | Anode | Standard anode connection; mounted opposite TAB 1 on DO-216 outline |
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 |
| Full metallic bottom | Eliminates solder flux entrapment during assembly, improving solder joint reliability and process yield |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal path from junction to PCB, reducing thermal resistance to 30°C/W |
| EIA-481 tape-and-reel packaging | Supports high-speed pick-and-place with standard 7″ reel (3,000 pcs) and 13″ reel (12,000 pcs) |
Applications
| DC Power Rail Clamping | Feedback Reference in SMPS |
|---|---|
Use Scenario: Protection of 48 V telecom or industrial control inputs against transient overvoltage events. IC Role / Device Role / Timing Role: Zener clamping element placed between rail and ground to limit peak voltage to 47 V. Use Value: With 3.0 W rating and 30°C/W thermal resistance, it sustains repeated 100 ms transients without thermal runaway. | Use Scenario: Voltage reference node in the optocoupler feedback loop of an isolated flyback converter. IC Role / Device Role / Timing Role: Provides stable 47 V reference to bias TL431 or similar shunt regulator. Use Value: ±5% tolerance and low dynamic impedance ensure tight output voltage regulation (<±1.5%) across line/load variations. |
| Automotive Sensor Biasing | Industrial Analog Signal Conditioning |
Use Scenario: Biasing supply for Hall-effect position sensors in engine management modules. IC Role / Device Role / Timing Role: Supplies regulated 47 V bias to sensor ICs operating in high-temperature under-hood environments. Use Value: Stable operation from –55°C to +150°C and >16 kV HBM ESD rating prevent field failures due to thermal drift or ESD stress. | Use Scenario: Overvoltage protection for 4–20 mA transmitter input stages exposed to wiring faults. IC Role / Device Role / Timing Role: Shunt limiter placed ahead of op-amp input to clamp fault currents above 35.8 V. Use Value: Sub-1 µA reverse leakage preserves signal integrity in high-impedance analog front-ends without loading error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5941B | Same 47 V Zener voltage and ±5% tolerance, but in DO-41 through-hole package; no metallic bottom or locking tab; higher thermal resistance (~50°C/W) | Requires manual or wave soldering; unsuitable for high-density SMT layouts or automated production | Select only when legacy through-hole assembly or lower-cost procurement outweighs thermal and automation advantages |
| BZX84-C47 | 47 V Zener in SOT-23 package; rated for 300 mW only; dynamic impedance ~90 Ω at 5 mA; no ESD rating specified | Limited to low-power signal-level clamping; cannot sustain 3.0 W surges or continuous regulation in power rails | Choose only for space-constrained, low-power bias networks where thermal load is negligible |
Compared with 1N5941B and BZX84-C47, the 1PMT5941E3/TR7 uniquely combines SMT compatibility, 3.0 W power handling, 30°C/W thermal resistance, and >16 kV ESD robustness-making it the sole option for automated, high-reliability, medium-power Zener regulation in harsh environments.
Availability
1PMT5941E3/TR7 is available at Aetrix Electronics and suitable for DC power rail clamping, SMPS feedback referencing, automotive sensor biasing, and industrial analog signal conditioning requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for 1PMT5941E3/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 designed to deliver high-power surface-mount voltage regulation with superior thermal performance and assembly robustness-targeting applications where DO-41 limitations and SOT-23 power constraints are unacceptable.
FAQ
What is the Zener voltage tolerance for 1PMT5941E3/TR7?
The 1PMT5941E3/TR7 has a standard Zener voltage tolerance of ±5% at 47 V, measured at IZT = 8.0 mA with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D, respectively, but the E3/TR7 variant specifies ±5%. This tolerance directly impacts regulation accuracy in feedback and clamping circuits.
How is thermal management handled in the 1PMT5941E3/TR7 package?
The 1PMT5941E3/TR7 uses the Powermite® package with a full metallic bottom and integral locking tab that serves as the primary thermal path. Its junction-to-TAB thermal resistance is 30°C/W, meaning TAB 1 must be connected to sufficient PCB copper area to maintain junction temperature within –55°C to +150°C limits under 3.0 W dissipation.
Is 1PMT5941E3/TR7 compatible with standard SMT reflow processes?
Yes, the 1PMT5941E3/TR7 is qualified for standard lead-free reflow profiles. Its molded Powermite® package withstands peak temperatures up to 260°C, and the EIA-481 tape-and-reel format (3,000 pcs per 7″ reel) is optimized for high-speed pick-and-place equipment without flux entrapment risk due to its full metallic bottom.
What is the maximum reverse leakage current for 1PMT5941E3/TR7?
The maximum reverse leakage current for 1PMT5941E3/TR7 is <1 µA at VR = 35.8 V (i.e., 76% of nominal Zener voltage). This low leakage ensures minimal loading in high-impedance reference or bias networks, preserving accuracy in precision analog circuits and low-power sensor interfaces.
Does 1PMT5941E3/TR7 meet any ESD immunity standards?
Yes, the 1PMT5941E3/TR7 is rated for >16 kV per the Human Body Model (HBM), as confirmed in the MSC0995 datasheet. This high ESD threshold supports reliable handling during board assembly and field operation in electrostatic-prone environments such as factory floors and automotive service bays.
1PMT5941E3/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:
- ±20%
- 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
1PMT5941E3/TR7 FAQ
1.How can I place an order for 1PMT5941E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941E3/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 1PMT5941E3/TR7 reliable?
The price and inventory of 1PMT5941E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5941E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941E3/TR7?
1PMT5941E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941E3/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 1PMT5941E3/TR7?
For technical support, including 1PMT5941E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5941E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941E3/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 1PMT5941E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5941E3/TR7?
All 1PMT5941E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941E3/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 1PMT5941E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5941E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941E3/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZX84C3V3LT1G
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