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Microchip Technology 1PMT5941A/TR13
- Part No.:
- 1PMT5941A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941A/TR13.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,083
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Product details
Overview
1PMT5941A/TR13 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 1000 µA max 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 1PMT5941A/TR13 datasheet, 1PMT5941A/TR13 pinout, 1PMT5941A/TR13 application, or 1PMT5941A/TR13 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 per EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates in reverse breakdown mode to regulate or clamp voltage with tight voltage tolerance and low dynamic impedance. Its Powermite® package integrates a full metallic bottom and locking tab for mechanical stability and thermal conduction to PCB copper.
The device exhibits 1000 µA maximum reverse leakage at VR = 35.8 V and maintains stable regulation across -55°C to +150°C junction temperature range. Thermal resistance of 30°C/W from junction to TAB 1 enables effective heat dissipation in high-density layouts without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±5% at IZT = 8.0 mA - defines nominal clamping level for overvoltage protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - supports sustained operation in compact industrial power supplies |
| Dynamic Impedance (ZZT) | 67 Ω at IZT = 8.0 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤1000 µA at VR = 35.8 V - guarantees low standby power loss in always-on systems |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - enables direct thermal path to PCB ground plane for reliability |
| ESD Rating | >16 kV per HBM - protects against handling-induced electrostatic discharge during assembly |
| Junction Temp Range | -55°C to +150°C - suitable for under-hood automotive and industrial environments |
Pinout & Package
Package: Powermite® (DO-216AA) surface-mount molded package with full metallic bottom and integral 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 soldered to copper pour for thermal performance |
| Lead 2 | Anode | Standard anode connection; polarity confirmed by cathode marking on package body |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow; eliminates through-hole assembly steps and board drilling |
| Integral heat sink locking tab | Provides mechanical retention during reflow and enhances thermal transfer to PCB copper |
| Full metallic bottom | Prevents solder flux entrapment, reducing post-assembly cleaning requirements and void risk |
| ESD robustness >16 kV HBM | Eliminates need for additional ESD protection circuitry in sensitive input stages |
| Tight zener voltage tolerance options | ±5% standard; ±2% (suffix C) and ±1% (suffix D) available for precision reference applications |
Applications
| Industrial Power Supply Clamping | Automotive ECUs |
|---|---|
Use Scenario: Clamp transient spikes on 48 V DC bus in programmable logic controllers and motor drives. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator and overvoltage protector. Use Value: Maintains rail integrity at 47 V with 67 Ω dynamic impedance, limiting voltage overshoot during load dump events. | Use Scenario: Protect microcontroller I/O pins from load-dump surges in engine control units. IC Role / Device Role / Timing Role: Standby clamping diode on sensor supply lines operating near 48 V nominal. Use Value: Withstands -55°C to +150°C ambient and delivers >16 kV HBM ESD immunity without derating. |
| Telecom DC-DC Reference | Test Equipment Calibration |
Use Scenario: Provide stable 47 V reference for isolated feedback loops in telecom rectifier modules. IC Role / Device Role / Timing Role: Precision voltage reference element in secondary-side regulation circuitry. Use Value: ±5% tolerance and low 1000 µA leakage at 35.8 V ensure accurate feedback under varying line/load conditions. | Use Scenario: Serve as traceable voltage clamp in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Stable breakdown reference for verifying 50 V range accuracy. Use Value: 30°C/W thermal resistance allows consistent VZ during extended calibration cycles without drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5368B | Same 47 V nominal, but DO-204AL (DO-41) through-hole package; 3.0 W rating at 75°C ambient; no metallic bottom or locking tab | Requires manual or wave soldering; unsuitable for high-density SMT layouts | Select when legacy through-hole design or higher ambient temp derating is required |
| BZX84-C47 | SOT-23 package; 47 V ±5%; 300 mW power rating; 100 Ω typical ZZT; 100 µA IR at 37.6 V | Limited to low-power signal-level clamping; cannot sustain 3.0 W continuous dissipation | Select only for low-current bias/reference use, not for power rail protection |
Compared with 1N5368B and BZX84-C47, the 1PMT5941A/TR13 uniquely combines 3.0 W SMT power handling, 30°C/W thermal resistance, and EIA-481 tape-and-reel compatibility-making it the only option among the three qualified for automated production of thermally demanding industrial power clamps.
Availability
1PMT5941A/TR13 is available at Aetrix Electronics and suitable for industrial power supply clamping, automotive ECU protection, and telecom DC-DC reference designs requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5941A/TR13 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 specifically for surface-mount power regulation and transient suppression in space-constrained, thermally demanding applications where traditional axial or DO-41 packages fail to meet thermal or automation requirements.
FAQ
What is the zener voltage tolerance for 1PMT5941A/TR13?
The 1PMT5941A/TR13 has a standard zener voltage tolerance of ±5% at 47 V, measured at 8.0 mA test current with TAB 1 held at 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request, but the base part number 1PMT5941A/TR13 reflects the ±5% grade.
How is thermal performance specified for 1PMT5941A/TR13?
1PMT5941A/TR13 specifies a thermal resistance of 30°C/W from junction to TAB 1. This value assumes direct thermal conduction from the metallic TAB 1 to a sufficiently sized PCB copper pour. The 3.0 W power rating is valid only when TAB 1 temperature is maintained at ≤60°C, making thermal layout critical for full power operation.
Is 1PMT5941A/TR13 compatible with automated SMT assembly?
Yes, 1PMT5941A/TR13 is supplied in EIA-481 compliant tape-and-reel format (13-inch reel, 12,000 pieces) and features a Powermite® package with integral locking tab and flat metallic bottom-both engineered for reliable pick-and-place, reflow soldering, and zero flux entrapment during automated manufacturing.
What is the maximum reverse leakage current for 1PMT5941A/TR13?
The maximum reverse leakage current for 1PMT5941A/TR13 is 1000 µA at a reverse voltage of 35.8 V, tested at TL = 30°C. This parameter is critical for low-power standby circuits, where excessive leakage could compromise battery life or system quiescent current budgets.
Does 1PMT5941A/TR13 have ESD protection built-in?
Yes, 1PMT5941A/TR13 is rated for >16 kV electrostatic discharge per the Human Body Model (HBM), verified per JEDEC JS-001. This intrinsic ESD robustness eliminates the need for external TVS devices in many I/O protection schemes, simplifying BOM and layout for sensitive analog or digital interfaces.
1PMT5941A/TR13 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/TR13 FAQ
1.How can I place an order for 1PMT5941A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941A/TR13 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/TR13 reliable?
The price and inventory of 1PMT5941A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941A/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5941A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941A/TR13?
1PMT5941A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941A/TR13 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/TR13?
For technical support, including 1PMT5941A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941A/TR13 requirements.
6.How does Aetrix verify that 1PMT5941A/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941A/TR13 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/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5941A/TR13?
All 1PMT5941A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941A/TR13, 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/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5941A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941A/TR13 Tags
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