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Microchip Technology 1PMT5951E3/TR13
- Part No.:
- 1PMT5951E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5951E3/TR13.pdf
- Description:
- DIODE ZENER 120V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,530
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Product details
Overview
1PMT5951E3/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 thermal resistance of 30°C/W junction-to-TAB1 - used for precision voltage regulation and overvoltage protection in compact DC power supplies.
For engineers reviewing the 1PMT5951E3/TR13 datasheet, 1PMT5951E3/TR13 pinout, 1PMT5951E3/TR13 application, or 1PMT5951E3/TR13 equivalent, key selection criteria include zener voltage accuracy, power derating at elevated tab temperature, reverse leakage at 91.2 V, knee current behavior at 0.25 mA, and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This device operates as a single-terminal voltage reference diode with cathode designated by TAB 1, requiring external series current limiting. Its full metallic bottom and integral heat sink locking tab enable direct thermal conduction to PCB copper, supporting stable regulation under transient load conditions.
The 1PMT5951E3/TR13 exhibits 4500 µA max reverse leakage at VR = 91.2 V and maintains tight voltage stability across -55°C to +150°C junction temperature range, with ESD rating >16 kV HBM - critical for industrial control I/O protection and automotive body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 120 V ±5% at IZT = 3.1 mA, TC = 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 PCB thermal relief |
| Dynamic Impedance | 380 Ω at IZT = 3.1 mA - determines output voltage variation under small-signal current changes |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter stable zener breakdown region |
| Reverse Leakage (IR) | 4500 µA max at VR = 91.2 V - limits standby power loss in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables thermal design using tab as primary heat path to PCB |
| ESD Rating | >16 kV per Human Body Model - supports robustness in unshielded industrial sensor interfaces |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode designated by TAB 1; mounting position unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to copper pour for thermal management and circuit return |
| Lead 2 | Anode | Input terminal for series current-limiting resistor; electrically isolated from TAB 1 |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in footprint smaller than DO-214AC |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability in high-humidity environments |
| Integral heat sink locking tab | Provides mechanical anchoring and low-thermal-resistance path from junction to PCB copper |
| ESD robustness | >16 kV HBM rating allows direct use on exposed I/O lines without additional protection circuitry |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for feedback loop in 24 V DC-DC converter supplying PLC I/O modules. IC Role / Device Role / Timing Role: Zener diode providing precise 120 V clamp and regulation for optocoupler-based isolation feedback. Use Value: Maintains ±5% output accuracy across -40°C to +85°C ambient with <380 Ω dynamic impedance minimizing load-induced drift. | Use Scenario: Overvoltage clamping on LIN bus transceiver supply rail subjected to load dump transients. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting 5 V regulator input against 120 V spikes. Use Value: Activates at 120 V with 0.25 mA knee current, limiting peak voltage before downstream IC damage occurs. |
| Medical Equipment Sensor Biasing | Telecom Line Card Surge Suppression |
Use Scenario: Providing stable bias voltage for high-impedance pH electrode amplifier in portable diagnostic device. IC Role / Device Role / Timing Role: Low-leakage (4500 µA max at 91.2 V) voltage reference enabling nanoamp-level sensor signal integrity. Use Value: Ensures measurement accuracy by minimizing bias current error contribution in ultra-low-power analog front-end. | Use Scenario: Secondary-stage clamping on -48 V telecom power feed line exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response Zener element absorbing energy between primary MOV and protected DC/DC stage. Use Value: Handles 3.0 W continuous dissipation and survives repeated 10/1000 µs surge events due to robust thermal path via TAB 1. |
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 zener voltage but in DO-41 through-hole package; 5 W rating; higher thermal resistance (65°C/W) | Requires manual or wave soldering; unsuitable for high-density SMT layouts | Select when board space permits through-hole mounting and higher continuous power is required |
| BZX84-C120 | 120 V SOT-23 Zener; 300 mW rating; 100 Ω dynamic impedance; no metallic thermal tab | Limited to low-power biasing; cannot handle 3.0 W transient surges | Select only for low-current reference applications where thermal performance is non-critical |
Compared with 1N5375B and BZX84-C120, the 1PMT5951E3/TR13 uniquely combines 3.0 W SMT power handling, 30°C/W thermal resistance via TAB 1, and >16 kV ESD rating - making it the only option suitable for ruggedized, high-density, thermally constrained industrial power regulation.
Availability
1PMT5951E3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive body control module protection, medical sensor biasing, and telecom line card surge suppression requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for 1PMT5951E3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line delivers high-power surface-mount voltage regulation in thermally optimized packages - designed specifically for space-constrained, high-stress power conversion and protection circuits.
FAQ
What is the zener voltage tolerance for 1PMT5951E3/TR13?
The 1PMT5951E3/TR13 has a standard zener voltage tolerance of ±5% at 120 V nominal, measured at 3.1 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the E3 suffix indicates the standard ±5% grade. This tolerance directly impacts regulation accuracy in feedback networks.
How is thermal management implemented for 1PMT5951E3/TR13?
Thermal management for 1PMT5951E3/TR13 relies on TAB 1 as the primary heat conduction path: the full metallic bottom transfers heat directly to PCB copper, achieving 30°C/W junction-to-tab thermal resistance. Designers must connect TAB 1 to a thermal pad with ≥4 thermal vias to internal ground planes to sustain 3.0 W dissipation at 60°C tab temperature.
What does the "TR13" suffix indicate in 1PMT5951E3/TR13?
The "TR13" suffix in 1PMT5951E3/TR13 specifies packaging in 13-inch tape-and-reel per EIA-481 standard, containing 12,000 units per reel. This format ensures compatibility with high-speed pick-and-place equipment and supports large-volume automated assembly - distinct from the 7-inch reel (TR7) option holding 3,000 units.
Can 1PMT5951E3/TR13 be used in place of a through-hole 1N5375B?
No - although both have 120 V zener voltage, the 1PMT5951E3/TR13 is a surface-mount Powermite® device with TAB 1 cathode and 3.0 W rating, while the 1N5375B is a through-hole DO-41 diode rated for 5 W. They differ in package, thermal path, pinout, and mounting method; direct substitution requires PCB layout revision and thermal redesign.
What is the maximum reverse leakage current for 1PMT5951E3/TR13 at 91.2 V?
The maximum reverse leakage current for 1PMT5951E3/TR13 is 4500 µA at reverse voltage VR = 91.2 V and TL = 30°C. This value is specified in the Electrical Characteristics table and defines the upper bound of standby current in bias networks - critical for low-power sensor interface designs where leakage could shift operating points.
1PMT5951E3/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:
- ±20%
- 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
1PMT5951E3/TR13 FAQ
1.How can I place an order for 1PMT5951E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5951E3/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 1PMT5951E3/TR13 reliable?
The price and inventory of 1PMT5951E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5951E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5951E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5951E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5951E3/TR13?
1PMT5951E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5951E3/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 1PMT5951E3/TR13?
For technical support, including 1PMT5951E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5951E3/TR13 requirements.
6.How does Aetrix verify that 1PMT5951E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5951E3/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 1PMT5951E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5951E3/TR13?
All 1PMT5951E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5951E3/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 1PMT5951E3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5951E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5951E3/TR13 Tags
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MMBZ5240B-7-F
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