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Microchip Technology 1PMT5944A/TR13
- Part No.:
- 1PMT5944A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5944A/TR13.pdf
- Description:
- DIODE ZENER 62V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,435
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Product details
Overview
1PMT5944A/TR13 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 1500 µA max 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 1PMT5944A/TR13 datasheet, 1PMT5944A/TR13 pinout, 1PMT5944A/TR13 application, or 1PMT5944A/TR13 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (30°C/W junction-to-TAB), ESD robustness (>16 kV HBM), low knee impedance, and compatibility with automated SMT placement equipment.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 62 V at 6.0 mA test current (IZT), exhibiting 100 Ω dynamic impedance (ZZT) and 1500 µA maximum reverse leakage (IR) at 47.1 V (VR). Its thermal resistance is specified as 30°C/W from junction to TAB 1, enabling effective heat transfer via the metallic bottom and integral locking tab.
The device uses a DO-216 molded package with cathode designated by TAB 1, supports mounting in any orientation, and meets EIA-481 tape-and-reel packaging standards (13-inch reel, 12,000 pieces). Junction temperature range is –55°C to +150°C, and forward voltage is 1.2 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±5% at IZT = 6.0 mA - defines stable regulation point under nominal bias |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling with thermal derating |
| Dynamic Impedance (ZZT) | 100 Ω at IZT = 6.0 mA - determines output voltage stability under small-signal AC load variations |
| Reverse Leakage (IR) | ≤1500 µA at VR = 47.1 V - ensures low standby current in clamping or reference configurations |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies thermal path efficiency for heatsinking via PCB copper |
| ESD Rating | >16 kV per Human Body Model - enables robust handling in unshielded assembly environments |
| Knee Impedance (ZZK) | 1500 Ω at IZK = 0.25 mA - indicates sharpness of breakdown onset for low-current regulation |
Pinout & Package
Package: Powermite® (DO-216), molded surface-mount package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; reverse-biased during Zener operation; no thermal function |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term solder joint reliability |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| ESD robustness | >16 kV HBM rating reduces risk of field failure in handling and system-level ESD events |
| Automated insertion compatibility | DO-216 footprint and tape-and-reel packaging support high-speed pick-and-place assembly |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module Clamping |
|---|---|
Use Scenario: Stabilizing 60 V auxiliary rail in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp transient overvoltage and maintain reference stability. Use Value: 62 V ±5% tolerance and 100 Ω dynamic impedance ensure tight regulation within ±0.5 V under 10–20 mA load variation. | Use Scenario: Protecting CAN transceiver supply input against load-dump spikes up to 65 V. IC Role / Device Role / Timing Role: Overvoltage clamp absorbing energy during ISO 7637-2 Pulse 5a events. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway at 125°C ambient. |
| Test Equipment Reference Circuit | Renewable Energy Inverter Monitoring |
Use Scenario: Providing stable 62 V reference for ADC input scaling in bench multimeter front-end. IC Role / Device Role / Timing Role: Precision voltage reference with low knee impedance for accurate analog-to-digital conversion. Use Value: 1500 µA max IR at 47.1 V ensures minimal error contribution (<0.02% FS) to reference divider network. | Use Scenario: Monitoring DC-link voltage in solar microinverter with overvoltage lockout threshold. IC Role / Device Role / Timing Role: Threshold detector triggering shutdown when bus exceeds safe operating limit. Use Value: Sharp 0.25 mA knee current and 1500 Ω ZZK enable reliable turn-on at precisely defined 62 V threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5944B | Same 62 V zener voltage, but in DO-41 through-hole package; no metallic bottom or locking tab; 50°C/W thermal resistance | Requires manual or wave soldering; unsuitable for high-density SMT layouts or automated production | Select only if legacy through-hole design or thermal derating margin >2× is available |
| BZX84-C62 | 62 V ±5%, SOT-23 package; 300 mW power rating; 100 Ω ZZT; 100 µA IR at 47.1 V | Limited to low-power signal-level clamping; cannot sustain 3.0 W dissipation or automotive load-dump energy | Use where space is critical and power stress is <300 mW; not a functional replacement for 1PMT5944A/TR13 |
Compared with 1N5944B and BZX84-C62, the 1PMT5944A/TR13 delivers 10× higher power capability and 60% lower thermal resistance in an SMT-optimized package-enabling compact, high-reliability clamping in industrial and automotive power systems where thermal management and automated assembly are essential.
Availability
1PMT5944A/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, test equipment reference circuits, and renewable energy monitoring systems requiring stable component supply and traceable sourcing.
Supply support for 1PMT5944A/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 family-including 1PMT5944A/TR13-is engineered for high-power surface-mount voltage regulation and transient suppression in harsh-environment applications where thermal performance and assembly robustness are critical.
FAQ
What is the zener voltage tolerance for 1PMT5944A/TR13?
The 1PMT5944A/TR13 has a standard zener voltage tolerance of ±5% at 62 V, measured at 6.0 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2% and ±1%) are available as suffix C and D variants, but the base 1PMT5944A/TR13 uses the ±5% grade per MSC0995 Rev F specification.
How is thermal management handled in the 1PMT5944A/TR13 package?
The 1PMT5944A/TR13 uses a Powermite® package with a full metallic bottom and integral locking tab that functions as both mechanical anchor and primary thermal path. Its 30°C/W junction-to-TAB thermal resistance requires direct soldering of TAB 1 to a copper thermal pad on the PCB to achieve the rated 3.0 W power dissipation at 60°C tab temperature.
Is 1PMT5944A/TR13 compatible with automated SMT assembly processes?
Yes, the 1PMT5944A/TR13 is fully compatible with automated SMT assembly. It is supplied in EIA-481 compliant tape-and-reel format (13-inch reel, 12,000 units), features a DO-216 footprint optimized for pick-and-place, and its locking tab design prevents rotation or misalignment during placement and reflow.
What is the maximum reverse leakage current for 1PMT5944A/TR13?
The 1PMT5944A/TR13 has a maximum reverse leakage current (IR) of 1500 µA at a reverse voltage (VR) of 47.1 V, measured at TL = 30°C. This value is specified in the Electrical Characteristics table of the MSC0995 datasheet and reflects worst-case leakage under sub-breakdown conditions.
Does 1PMT5944A/TR13 meet any ESD immunity standards?
Yes, the 1PMT5944A/TR13 is rated for >16 kV electrostatic discharge per the Human Body Model (HBM), as stated in the FEATURES section of the MSC0995 datasheet. This high ESD rating supports robust handling during manufacturing and improves field reliability in unshielded electronic systems.
1PMT5944A/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):
- 62 V
- Tolerance:
- ±10%
- 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
1PMT5944A/TR13 FAQ
1.How can I place an order for 1PMT5944A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5944A/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 1PMT5944A/TR13 reliable?
The price and inventory of 1PMT5944A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5944A/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5944A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5944A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5944A/TR13?
1PMT5944A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5944A/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 1PMT5944A/TR13?
For technical support, including 1PMT5944A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5944A/TR13 requirements.
6.How does Aetrix verify that 1PMT5944A/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5944A/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 1PMT5944A/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5944A/TR13?
All 1PMT5944A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5944A/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 1PMT5944A/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5944A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5944A/TR13 Tags
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