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Microchip Technology 1PMT5951A/TR13
- Part No.:
- 1PMT5951A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5951A/TR13.pdf
- Description:
- DIODE ZENER 120V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,844
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Product details
Overview
1PMT5951A/TR13 from Microsemi is a 120 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 380 Ω dynamic impedance at 3.1 mA test current and 4500 µA max reverse leakage at 91.2 V. It serves as a precision voltage reference or overvoltage clamp in power supply regulation circuits.
For engineers reviewing the 1PMT5951A/TR13 datasheet, 1PMT5951A/TR13 pinout, 1PMT5951A/TR13 application, or 1PMT5951A/TR13 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), reverse leakage at rated VR, and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This device operates as a two-terminal voltage-regulating diode with cathode designated by TAB 1. Its Powermite® package features a full metallic bottom for flux-free soldering and an integral locking tab acting as a heat sink, enabling direct thermal conduction from junction to PCB copper.
Electrical behavior is defined at TL = 30°C with VZ measured 20 seconds after DC current application; dynamic impedance is derived using 60 Hz RMS AC current equal to 10% of IZT. The 120 V nominal zener voltage has standard ±5% tolerance, with tighter tolerances available via suffixes C (±2%) and D (±1%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 120 V ±5% at IZT = 3.1 mA - defines stable regulation point under nominal bias |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power handling with defined thermal boundary |
| Dynamic Impedance (ZZT) | 380 Ω at IZT = 3.1 mA - indicates voltage stability under small-signal AC variations |
| Reverse Leakage (IR) | 4500 µA max at VR = 91.2 V - quantifies off-state conduction limiting regulation accuracy |
| Thermal Resistance | 30°C/W junction-to-TAB1 - determines temperature rise per watt dissipated into PCB copper |
| ESD Rating | >16 kV per Human Body Model - ensures robustness during handling and board assembly |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter useful regulation region near VZ |
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; mounting position unrestricted.
| 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 management |
| Lead 2 | Anode | Standard anode connection; electrically isolated from TAB 1; used for biasing and current return path |
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 |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term solder joint reliability and process yield |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal path from junction to PCB, reducing thermal resistance to 30°C/W |
| ESD robustness | >16 kV HBM rating allows safe handling and integration into ESD-sensitive manufacturing environments without added protection |
| Automated insertion compatibility | Designed for pick-and-place and reflow processes per EIA-481 tape-and-reel standards (7″/13″ reels) |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Used in optocoupler-coupled feedback loop of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference providing precise 120 V threshold for error amplifier bias and voltage sensing. Use Value: Tight ±5% VZ tolerance and low dynamic impedance ensure stable regulation across line/load transients. | Use Scenario: Clamps transient overvoltage on analog sensor input lines exposed to industrial EMI. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting downstream instrumentation amplifiers from >100 V surges. Use Value: 3.0 W peak power rating and >16 kV HBM rating allow reliable operation in harsh factory-floor environments. |
| Programmable Logic Controller I/O Protection | Telecom Line Interface Voltage Reference |
Use Scenario: Protects digital I/O channels against induced surges from relay coil flyback or motor switching. IC Role / Device Role / Timing Role: Cathode-grounded shunt regulator clamping voltage to 120 V before reaching FPGA or microcontroller GPIO. Use Value: Metallic TAB 1 enables direct thermal coupling to ground plane, sustaining repeated 3.0 W pulse events without derating. | Use Scenario: Provides stable bias reference for line driver ICs in DSL or POTS interface modules. IC Role / Device Role / Timing Role: Precision voltage reference setting common-mode level and bias points in differential line drivers. Use Value: Low reverse leakage (<4500 µA at 91.2 V) maintains reference accuracy over temperature and time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5375B | Same 120 V nominal VZ, but DO-204AL package; higher thermal resistance (50°C/W); no metallic bottom or locking tab | Limited to lower-power or non-automated assembly; less effective heat spreading in high-density layouts | Select 1N5375B only if legacy through-hole footprint or cost sensitivity outweighs thermal and assembly advantages of 1PMT5951A/TR13 |
| BZX84-C120 | SOT-23 package; 120 V VZ, but rated only 300 mW; dynamic impedance ~1000 Ω; no specified ESD rating | Suitable only for low-power signal-level clamping, not power regulation or surge suppression | Choose BZX84-C120 only for space-constrained signal-path references where power dissipation < 0.3 W is guaranteed |
Compared with 1N5375B and BZX84-C120, the 1PMT5951A/TR13 delivers superior thermal performance (30°C/W vs. 50°C/W or unlisted), automated assembly readiness (EIA-481 tape), and ruggedized construction (metallic bottom, locking tab, >16 kV HBM), making it the preferred choice for industrial power and protection applications demanding reliability and manufacturability.
Availability
1PMT5951A/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, PLC I/O protection, and telecom line reference circuits requiring stable component supply and consistent tape-and-reel delivery.
Supply support for 1PMT5951A/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, and industrial markets.
The Powermite® Zener diode product line, including 1PMT5951A/TR13, was engineered for high-power surface-mount voltage regulation and transient suppression in mission-critical power systems where thermal management and assembly robustness are essential.
FAQ
What is the zener voltage tolerance for 1PMT5951A/TR13?
The 1PMT5951A/TR13 has a standard zener voltage tolerance of ±5% at 120 V nominal, measured at IZT = 3.1 mA with TAB 1 held at 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request, but the base 1PMT5951A/TR13 part uses the ±5% specification confirmed in MSC0995 Rev F.
How is thermal management handled in the 1PMT5951A/TR13 package?
The 1PMT5951A/TR13 uses its metallic TAB 1 as the primary thermal path, achieving 30°C/W junction-to-TAB thermal resistance. The integral locking tab mechanically anchors the device while conducting heat directly into PCB copper, and the full metallic bottom prevents flux entrapment-ensuring repeatable solder joint integrity and efficient heat transfer during sustained 3.0 W operation.
Is 1PMT5951A/TR13 compatible with automated SMT assembly?
Yes, the 1PMT5951A/TR13 is supplied in EIA-481 standard tape-and-reel format (7″ reel: 3,000 pcs; 13″ reel: 12,000 pcs) and designed for compatibility with pick-and-place equipment. Its Powermite® package geometry and locking tab ensure stable orientation and mechanical retention during reflow, meeting requirements for high-yield automated assembly.
What is the maximum reverse leakage current for 1PMT5951A/TR13?
The maximum reverse leakage current for 1PMT5951A/TR13 is 4500 µA at VR = 91.2 V, as specified in the MSC0995 datasheet Electrical Characteristics table. This value is measured at TL = 30°C and defines the upper bound of off-state conduction that could affect regulation accuracy in high-impedance bias networks.
Does 1PMT5951A/TR13 have ESD protection built-in?
Yes, the 1PMT5951A/TR13 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as stated in the FEATURES section of the MSC0995 datasheet. This intrinsic robustness eliminates the need for external ESD protection components during handling and board assembly, reducing BOM count and layout complexity.
1PMT5951A/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):
- 120 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 380 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 91.2 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
1PMT5951A/TR13 FAQ
1.How can I place an order for 1PMT5951A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5951A/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 1PMT5951A/TR13 reliable?
The price and inventory of 1PMT5951A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5951A/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5951A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5951A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5951A/TR13?
1PMT5951A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5951A/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 1PMT5951A/TR13?
For technical support, including 1PMT5951A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5951A/TR13 requirements.
6.How does Aetrix verify that 1PMT5951A/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5951A/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 1PMT5951A/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5951A/TR13?
All 1PMT5951A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5951A/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 1PMT5951A/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5951A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5951A/TR13 Tags
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