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Microchip Technology 1PMT5941B/TR13
- Part No.:
- 1PMT5941B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5941B/TR13.pdf
- Description:
- DIODE ZENER 47V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,095
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Product details
Overview
1PMT5941B/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 <1 µA reverse leakage at 35.8 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails and analog signal conditioning circuits.
For engineers reviewing the 1PMT5941B/TR13 datasheet, 1PMT5941B/TR13 pinout, 1PMT5941B/TR13 application, or 1PMT5941B/TR13 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 Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or line conditions. Its Powermite® package integrates a full metallic bottom and locking tab that directly conducts heat from the junction to the PCB copper, achieving 30°C/W thermal resistance from junction to TAB 1.
The device exhibits low knee impedance (ZZK = 0.25 Ω) and tight regulation at IZT = 8.0 mA, with reverse leakage capped at 1 µA up to VR = 35.8 V. It is specified for operation across –55°C to +150°C junction temperature range and supports tape-and-reel delivery per EIA-481 standard.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±5% at IZT = 8.0 mA - defines stable regulation point for voltage reference or clamping |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-power handling in compact surface-mount form factor |
| Dynamic Impedance (ZZT) | 67 Ω at IZT = 8.0 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | <1 µA at VR = 35.8 V - ensures minimal quiescent current in standby or sensing circuits |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - allows direct thermal coupling to PCB copper for reliable power derating |
| ESD Rating | >16 kV per Human Body Model - provides robustness against handling and system-level electrostatic discharge |
| Junction Temp Range | –55°C to +150°C - supports operation in automotive under-hood, industrial control, and aerospace environments |
Pinout & Package
The 1PMT5941B/TR13 uses a 2-terminal DO-216 molded surface-mount package with cathode designated by TAB 1. The full metallic bottom and integral locking tab serve as both mechanical anchor and thermal path to PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal; must be soldered to copper pour for thermal performance |
| Lead 2 | Anode | Standard anode connection; reverse-biased during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | DO-216 outline with 3.0 W rating - replaces larger through-hole Zeners without sacrificing power capability |
| Full metallic bottom | Eliminates solder flux entrapment - improves long-term reliability and assembly yield in reflow processes |
| Integral heat sink locking tab | Direct thermal path from junction to PCB - achieves 30°C/W junction-to-tab resistance |
| ESD robustness | >16 kV HBM - reduces need for external protection in board-level ESD-sensitive applications |
| Automated insertion compatibility | EIA-481 tape-and-reel packaging - supports high-speed pick-and-place with no manual handling |
Applications
| DC Power Rail Clamping | Industrial Sensor Reference |
|---|---|
Use Scenario: Protecting microcontroller I/O pins from transient overvoltage on 48 V supply lines in factory automation systems. IC Role / Device Role / Timing Role: Zener clamping diode shunting excess energy to ground when rail exceeds 47 V. Use Value: Prevents latch-up or damage using only 1PMT5941B/TR13's 3.0 W dissipation and 35.8 V reverse standoff. |
Use Scenario: Providing stable 47 V reference for analog front-end calibration in pressure transducers operating at 125°C ambient. IC Role / Device Role / Timing Role: Precision voltage reference source with low tempco drift and <1 µA leakage. Use Value: Enables accurate sensor offset trimming across –40°C to +125°C using 1PMT5941B/TR13's –55°C to +150°C junction rating. |
| Telecom Line Protection | Automotive ECU Voltage Monitoring |
Use Scenario: Secondary overvoltage protection on -48 V telecom battery backup lines exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting surge voltage to safe levels before TVS activation. Use Value: Complements primary TVS with precise 47 V threshold and 67 Ω dynamic impedance for controlled clamping behavior using 1PMT5941B/TR13. |
Use Scenario: Monitoring 48 V battery voltage in 48 V mild-hybrid vehicle ECUs with extended temperature requirements. IC Role / Device Role / Timing Role: Voltage sense node reference enabling accurate ADC measurement of battery state-of-charge. Use Value: Delivers stable 47 V reference despite engine bay thermal cycling, leveraging 1PMT5941B/TR13's 150°C max junction temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor 1N5941B | Same 47 V ±5%, but DO-41 through-hole package; 1.5 W rating; no metallic tab or locking feature | Requires through-hole assembly; unsuitable for high-power SMT designs or automated placement | Select 1PMT5941B/TR13 when surface-mount, 3.0 W, and thermal management via PCB copper are required |
| Vishay 1N5941B-E3/54 | Same 47 V ±5%, DO-41 package; 1.5 W; RoHS-compliant but lacks ESD rating specification | Lacks documented >16 kV HBM rating; not validated for ESD-critical signal paths | Choose 1PMT5941B/TR13 where >16 kV ESD immunity and SMT manufacturability are mandatory |
Compared with 1N5941B and 1N5941B-E3/54, the 1PMT5941B/TR13 delivers 2× higher power dissipation in surface-mount form, integrated thermal sinking via TAB 1, and certified ESD robustness-making it uniquely suited for high-reliability, high-density, and thermally constrained applications.
Availability
1PMT5941B/TR13 is available at Aetrix Electronics and suitable for industrial sensor calibration, telecom line protection, automotive 48 V monitoring, and DC power rail clamping requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5941B/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 semiconductor manufacturer specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener diode family-including 1PMT5941B/TR13-is engineered for high-power surface-mount voltage regulation in space-constrained, thermally demanding applications where traditional through-hole devices fall short.
FAQ
What is the Zener voltage tolerance for 1PMT5941B/TR13?
The 1PMT5941B/TR13 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% and ±1%) are available with suffixes C and D respectively, but the TR13 variant ships with the standard ±5% grade. This tolerance directly affects regulation accuracy in precision reference applications.
How is thermal performance achieved in the 1PMT5941B/TR13 package?
The 1PMT5941B/TR13 achieves thermal performance via its Powermite® package design: a full metallic bottom and integral locking tab provide direct conduction from the silicon junction to the PCB copper. This yields a measured thermal resistance of 30°C/W junction-to-TAB 1, enabling 3.0 W dissipation at TAB 1 = 60°C-critical for sustained operation in high-temperature environments.
Is the 1PMT5941B/TR13 compatible with automated SMT assembly?
Yes, the 1PMT5941B/TR13 is fully compatible with automated SMT assembly. It is supplied in EIA-481 compliant tape-and-reel format (TR13 denotes 13-inch reel), and its DO-216 outline, symmetric geometry, and locking tab ensure stable pickup, placement, and reflow soldering without tombstoning or misalignment.
What is the maximum reverse voltage before significant leakage in 1PMT5941B/TR13?
The 1PMT5941B/TR13 guarantees reverse leakage current ≤1 µA up to a reverse voltage (VR) of 35.8 V. Beyond this, leakage increases nonlinearly toward the 47 V Zener breakdown point. Designers must ensure operating reverse bias stays below 35.8 V in standby or sensing modes to maintain low quiescent current.
Does the 1PMT5941B/TR13 have an ESD rating, and how is it tested?
Yes, the 1PMT5941B/TR13 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as verified per ANSI/ESDA/JEDEC JS-001. This rating is intrinsic to the device structure and packaging-not added externally-and ensures robustness during handling, board assembly, and field operation without requiring supplemental protection circuitry.
1PMT5941B/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:
- ±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
1PMT5941B/TR13 FAQ
1.How can I place an order for 1PMT5941B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5941B/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 1PMT5941B/TR13 reliable?
The price and inventory of 1PMT5941B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5941B/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5941B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5941B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5941B/TR13?
1PMT5941B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5941B/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 1PMT5941B/TR13?
For technical support, including 1PMT5941B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5941B/TR13 requirements.
6.How does Aetrix verify that 1PMT5941B/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5941B/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 1PMT5941B/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5941B/TR13?
All 1PMT5941B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5941B/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 1PMT5941B/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5941B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5941B/TR13 Tags
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Diodes Incorporated
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