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Microchip Technology 1PMT5944E3/TR7
- Part No.:
- 1PMT5944E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5944E3/TR7.pdf
- Description:
- DIODE ZENER 62V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,219
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Product details
Overview
1PMT5944E3/TR7 from Microsemi is a 62 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 100 Ω dynamic impedance at 6.0 mA test current and <1 µA reverse leakage at 47.1 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5944E3/TR7 datasheet, 1PMT5944E3/TR7 pinout, 1PMT5944E3/TR7 application, or 1PMT5944E3/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 (1500 Ω at 0.25 mA), and compatibility with EIA-481 tape-and-reel automated assembly.
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 eliminate solder flux entrapment during reflow.
The device exhibits low reverse leakage (<1 µA at VR = 47.1 V), stable dynamic impedance (100 Ω at IZT = 6.0 mA), and a thermal resistance of 30°C/W from junction to TAB 1 - enabling reliable operation up to +150°C junction temperature under defined power derating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±5% at IZT = 6.0 mA, TL = 30°C - defines regulated output voltage under nominal bias |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling with thermal pad cooling |
| Dynamic Impedance (ZZT) | 100 Ω at IZT = 6.0 mA - determines voltage regulation sensitivity to current variation |
| Knee Impedance (ZZK) | 1500 Ω at IZK = 0.25 mA - indicates onset of stable regulation at low-current operation |
| Reverse Leakage (IR) | <1 µA at VR = 47.1 V - ensures minimal standby current in clamping or reference circuits |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies thermal path efficiency for PCB copper pad heat sinking |
| ESD Rating | >16 kV per Human Body Model - supports robust handling in automated SMT lines without special ESD controls |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral locking tab acting as thermal sink; cathode designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to PCB copper pour for thermal management and circuit return |
| Lead 2 | Anode | Signal-side terminal; connects to positive rail or load in shunt regulation configuration |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling traditionally found in larger through-hole packages |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper via TAB 1 |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and solder joint integrity |
| ESD robustness | >16 kV HBM rating allows safe handling and placement in standard SMT environments without added protection circuitry |
| Tight voltage tolerance option | ±5% standard; 2% (suffix C) and 1% (suffix D) versions available for precision reference applications |
Applications
| Industrial Power Supply Regulation | Automated Test Equipment (ATE) Reference |
|---|---|
Use Scenario: Stabilizing 60–65 V intermediate bus in programmable DC power supplies for factory automation. IC Role / Device Role / Timing Role: Shunt voltage reference and overvoltage clamp protecting downstream regulators and ADC front-ends. Use Value: Maintains ±5% regulation accuracy across -55°C to +150°C ambient with 100 Ω dynamic impedance limiting voltage drift under load transients. | Use Scenario: Providing stable 62 V calibration reference in multi-channel ATE source-measure units (SMUs). IC Role / Device Role / Timing Role: Precision Zener reference node for DAC output scaling and feedback loop trimming. Use Value: Low 1 µA reverse leakage at 47.1 V ensures minimal error contribution to high-impedance reference dividers in 24-bit measurement systems. |
| Motor Drive Gate Clamp | Telecom Line Card Protection |
Use Scenario: Clamping gate-source voltage of 600 V IGBTs in servo drive inverters during switching transitions. IC Role / Device Role / Timing Role: Transient overvoltage suppressor on isolated gate driver outputs. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained energy absorption during repetitive dv/dt events without thermal runaway. | Use Scenario: Protecting analog interface ICs on DSL line cards from induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary DC clamping element in hybrid surge protection circuits with gas discharge tubes. Use Value: >16 kV HBM ESD rating ensures survivability during board-level handling and field maintenance without degradation of 62 V clamping threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5944BRLG | Same 62 V nominal Zener voltage, but in DO-41 through-hole package; no metallic thermal tab; 1.5 W rating | Requires PCB hole drilling and wave soldering; unsuitable for high-power density or thermally constrained layouts | Select only when legacy through-hole assembly is mandated and thermal load is ≤1.5 W |
| BZX84-C62LT1G | 62 V ±5%, SOT-23 package; 300 mW power rating; 100 Ω ZZT at 5 mA; 300°C/W junction-to-air thermal resistance | Limited to low-power signal-level clamping; cannot sustain 3.0 W dissipation without external heatsinking | Choose for space-constrained signal conditioning where power stress is below 300 mW |
Compared with 1N5944BRLG and BZX84-C62LT1G, the 1PMT5944E3/TR7 uniquely delivers 3.0 W power handling in a surface-mount footprint with integrated thermal management - making it the only viable option for high-reliability, high-power-density Zener regulation in industrial motor drives and telecom infrastructure.
Availability
1PMT5944E3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automated test equipment, motor drive gate protection, and telecom line card surge suppression requiring stable component supply and extended temperature operation.
Supply support for 1PMT5944E3/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 RF solutions 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 process robustness for mission-critical power management in harsh environments.
FAQ
What is the Zener voltage tolerance for 1PMT5944E3/TR7?
The 1PMT5944E3/TR7 has a standard Zener voltage tolerance of ±5% at 62 V, measured at 6.0 mA test current and TAB 1 temperature of 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request, but the base 1PMT5944E3/TR7 part uses the ±5% specification confirmed in the MSC0995 datasheet revision F.
How is thermal management implemented in the 1PMT5944E3/TR7 package?
The 1PMT5944E3/TR7 uses the Powermite® package with an integral metallic locking tab (TAB 1) that serves as both cathode terminal and primary thermal conduction path. Its 30°C/W junction-to-TAB thermal resistance requires direct soldering of TAB 1 to a PCB copper pour to achieve the rated 3.0 W power dissipation at 60°C tab temperature.
Does 1PMT5944E3/TR7 meet industry-standard ESD requirements?
Yes, the 1PMT5944E3/TR7 is rated for >16 kV per Human Body Model (HBM), as documented in the MSC0995 datasheet. This level exceeds typical IEC 61000-4-2 Level 4 (8 kV contact) requirements and supports robust handling in automated SMT assembly lines without additional ESD mitigation.
What is the maximum reverse leakage current for 1PMT5944E3/TR7?
The maximum reverse leakage current for 1PMT5944E3/TR7 is <1 µA at a reverse voltage (VR) of 47.1 V, as specified in the Electrical Characteristics table of the MSC0995 datasheet. This value is measured at TL = 30°C and confirms low standby power loss in precision reference or clamping applications.
Is 1PMT5944E3/TR7 compatible with EIA-481 tape-and-reel packaging standards?
Yes, the 1PMT5944E3/TR7 is supplied in EIA-481 compliant tape-and-reel format - specifically 7-inch reels containing 3,000 pieces and 13-inch reels containing 12,000 pieces - ensuring seamless integration into high-speed pick-and-place equipment used in volume manufacturing.
1PMT5944E3/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):
- 62 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 47.1 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
1PMT5944E3/TR7 FAQ
1.How can I place an order for 1PMT5944E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5944E3/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 1PMT5944E3/TR7 reliable?
The price and inventory of 1PMT5944E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5944E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5944E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5944E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5944E3/TR7?
1PMT5944E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5944E3/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 1PMT5944E3/TR7?
For technical support, including 1PMT5944E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5944E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5944E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5944E3/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 1PMT5944E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5944E3/TR7?
All 1PMT5944E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5944E3/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 1PMT5944E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5944E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5944E3/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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