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Microchip Technology 1PMT5944BE3/TR13
- Part No.:
- 1PMT5944BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5944BE3/TR13.pdf
- Description:
- DIODE ZENER 62V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,619
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Product details
Overview
1PMT5944BE3/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, used for precision voltage regulation and overvoltage protection in compact power supplies.
For engineers reviewing the 1PMT5944BE3/TR13 datasheet, 1PMT5944BE3/TR13 pinout, 1PMT5944BE3/TR13 application, or 1PMT5944BE3/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 as a two-terminal voltage reference and clamp device, with cathode designated by TAB 1 and full metallic bottom enabling reliable thermal conduction and flux-free soldering. Its Powermite® package integrates a locking tab that functions as an integral heat sink, supporting stable 3.0 W power handling without external heatsinking under defined thermal conditions.
The device exhibits tight voltage regulation across its operating range: zener voltage is specified at 62 V ±5% measured at 6.0 mA (IZT), with 100 Ω dynamic impedance (ZZT) and 1500 µA maximum reverse leakage (IR) at 47.1 V (VR). Thermal resistance from junction to TAB 1 is 30°C/W, enabling predictable derating above ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±5% at IZT = 6.0 mA - defines nominal regulation point with production-grade tolerance |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power under defined thermal mounting condition |
| Dynamic Impedance (ZZT) | 100 Ω at IZT = 6.0 mA - determines small-signal voltage variation under load current changes |
| Reverse Leakage (IR) | ≤1500 µA at VR = 47.1 V - specifies off-state conduction limit for low-power standby integrity |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - enables thermal derating calculation for PCB copper area and ambient temperature |
| ESD Rating | >16 kV per Human Body Model - ensures robustness during automated handling and board assembly |
| Knee Impedance (ZZK) | 1500 Ω at IZK = 0.25 mA - characterizes regulation onset near threshold, critical for low-current biasing |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; weight ≈ 0.016 g; mechanical outline conforms to DO-216 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection; must be soldered to copper pour for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1; requires minimal trace width due to low forward voltage (1.2 V @ 200 mA) |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| Integral heat sink locking tab | Eliminates need for external heatsink; TAB 1 serves as primary thermal interface with 30°C/W junction-to-tab resistance |
| Full metallic bottom | Prevents solder flux entrapment during reflow, improving long-term reliability and void-free solder joint formation |
| EIA-481 tape-and-reel packaging | Supports direct integration into automated pick-and-place systems with 3,000 pcs per 7-inch reel (TR13 denotes 13-inch reel) |
| ESD robustness | >16 kV HBM rating ensures survival through standard SMT handling, reducing field failure risk in sensitive applications |
Applications
| Industrial Power Supply Regulation | Automotive ECU Voltage Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage in isolated DC-DC converter feedback loops for 24 V industrial PLC modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and overvoltage clamp on secondary-side error amplifier input. Use Value: 62 V rating allows safe clamping of transients up to 47.1 V reverse, while 100 Ω ZZT ensures <0.6 V regulation shift across 1–10 mA load variation. | Use Scenario: Protecting microcontroller I/O pins from load-dump-induced voltage spikes in 12 V automotive body control modules. IC Role / Device Role / Timing Role: Transient voltage suppression element placed between I/O line and ground, triggered above 47.1 V. Use Value: >16 kV HBM ESD rating withstands assembly stress, and 3.0 W power rating absorbs 100 ms load-dump energy without degradation. |
| Telecom Line Card Protection | Medical Sensor Bias Reference |
Use Scenario: Safeguarding Ethernet PHY interfaces against induced surges on PoE-powered line cards. IC Role / Device Role / Timing Role: Primary clamping device on data line pairs, coordinated with TVS diodes for multi-stage protection. Use Value: Low 1500 µA IR at 47.1 V minimizes standby current draw, preserving signal integrity in always-on monitoring circuits. | Use Scenario: Providing stable bias voltage for precision analog front-end amplifiers in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise voltage reference source for ADC driver stages requiring stable 62 V rail. Use Value: ±5% VZ tolerance and 100 Ω ZZT ensure <±3.1 V total error budget across temperature and current variation. |
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 1N5355B | Same 62 V nominal, but in DO-204AL (DO-41) through-hole package; 5 W rating; higher ZZT (110 Ω); no ESD rating specified | Requires PCB through-hole footprint and manual/automated insertion; unsuitable for ultra-compact SMT designs | Select when higher power margin or legacy through-hole compatibility is required |
| Vishay SZ1PMT5944B | Identical Powermite® package, same 62 V/3.0 W specs, but offered with tighter ±2% tolerance (suffix C) and RoHS-compliant termination | Direct drop-in replacement where enhanced voltage accuracy or environmental compliance is mandated | Select when tighter VZ tolerance or lead-free assembly is required without changing layout |
Compared with 1PMT5944BE3/TR13, the 1N5355B trades SMT compatibility and ESD robustness for higher power and through-hole fit, while the SZ1PMT5944B offers identical form-factor benefits with improved tolerance and RoHS compliance-making it ideal for next-gen medical or industrial designs demanding tighter regulation.
Availability
1PMT5944BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU voltage clamp, and telecom line card protection requiring stable component supply, consistent tape-and-reel delivery, and long-term lifecycle support.
Supply support for 1PMT5944BE3/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 RF solutions for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode family-including 1PMT5944BE3/TR13-is engineered for high-power-density voltage regulation in space-constrained SMT applications, emphasizing thermal efficiency, assembly robustness, and transient resilience.
FAQ
What is the zener voltage tolerance for 1PMT5944BE3/TR13?
The 1PMT5944BE3/TR13 has a standard zener voltage tolerance of ±5% at 62 V, measured at 6.0 mA test current (IZT) with TAB 1 held at 30°C. Tighter tolerances (±2% and ±1%) are available via suffixes C and D, but the base part number 1PMT5944BE3/TR13 uses the ±5% grade per Microsemi's MSC0995 specification sheet.
How is thermal performance defined for 1PMT5944BE3/TR13?
The 1PMT5944BE3/TR13 has a junction-to-TAB 1 thermal resistance of 30°C/W. Its 3.0 W power rating applies only when TAB 1 is maintained at 60°C; derating is required above that temperature. The full metallic bottom and locking tab provide direct thermal conduction to PCB copper, making thermal design dependent on pad size and copper mass-not ambient air flow.
Is 1PMT5944BE3/TR13 compatible with automated SMT assembly?
Yes, 1PMT5944BE3/TR13 is fully compatible with automated SMT assembly. It ships in EIA-481 compliant tape-and-reel format (TR13 = 13-inch reel, 12,000 pieces), features a flux-entrapment–free full metallic bottom, and is designed for use with automatic insertion equipment per Microsemi's mechanical specifications.
What does the "E3" suffix indicate in 1PMT5944BE3/TR13?
The "E3" suffix in 1PMT5944BE3/TR13 denotes Microsemi's standard RoHS-compliant termination finish-100% matte tin plating-ensuring lead-free solderability and compliance with environmental directives. This replaces older SnPb finishes and is verified per J-STD-609A Class 3 marking standards.
Can 1PMT5944BE3/TR13 replace older through-hole Zeners like 1N5355B?
No, 1PMT5944BE3/TR13 cannot serve as a direct physical replacement for 1N5355B due to differing packages: 1PMT5944BE3/TR13 uses surface-mount Powermite® (DO-216), while 1N5355B uses through-hole DO-41. Though both are 62 V Zeners, layout redesign is required. Electrical substitution is possible only after verifying thermal, impedance, and transient response requirements in the target circuit.
1PMT5944BE3/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:
- ±5%
- 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
1PMT5944BE3/TR13 FAQ
1.How can I place an order for 1PMT5944BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5944BE3/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 1PMT5944BE3/TR13 reliable?
The price and inventory of 1PMT5944BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5944BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5944BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5944BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5944BE3/TR13?
1PMT5944BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5944BE3/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 1PMT5944BE3/TR13?
For technical support, including 1PMT5944BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5944BE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5944BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5944BE3/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 1PMT5944BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5944BE3/TR13?
All 1PMT5944BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5944BE3/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 1PMT5944BE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5944BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5944BE3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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