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Microchip Technology 1PMT5951BE3/TR13
- Part No.:
- 1PMT5951BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5951BE3/TR13.pdf
- Description:
- DIODE ZENER 120V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,671
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Product details
Overview
1PMT5951BE3/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 19.8 mA maximum Zener current - used for precision voltage regulation and overvoltage protection in industrial power supplies.
For engineers reviewing the 1PMT5951BE3/TR13 datasheet, 1PMT5951BE3/TR13 pinout, 1PMT5951BE3/TR13 application, or 1PMT5951BE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), reverse leakage (<1 µA at 91.2 V), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1, requiring no external biasing circuitry. 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 device is characterized at TL = 30°C with Zener voltage measured 20 seconds after DC current application, and dynamic impedance derived using 60 Hz RMS AC current equal to 10% of IZT - confirming stable small-signal behavior in feedback loops and clamp circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 120 V ±5% at IZT = 3.1 mA - defines clamping threshold for overvoltage protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous thermal load without derating |
| Dynamic Impedance (ZZT) | 380 Ω at IZT = 3.1 mA - determines regulation sensitivity to current variation |
| Reverse Leakage (IR) | <1 µA at VR = 91.2 V - ensures minimal standby power loss in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - enables thermal design using PCB copper area as heatsink |
| ESD Rating | >16 kV per Human Body Model - supports robust handling in automated SMT lines without added protection |
| Junction Temp Range | −55°C to +150°C - allows operation in automotive under-hood and industrial motor drive environments |
Pinout & Package
Package: Powermite® surface-mount molded case with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; mounting position unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection - must be soldered to copper pour for thermal management |
| Lead 2 | Anode | Standard anode terminal - routed to ground or low-impedance return path in clamp/regulator configurations |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layouts while delivering 3.0 W power handling comparable to larger DO-216 through-hole devices |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| 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 need for external ESD protection in input-stage clamp designs |
| Tape-and-reel packaging | EIA-481 compliant 7″ reel (3,000 pcs) supports seamless integration with high-speed pick-and-place equipment |
Applications
| Industrial Power Supply Regulation | Automotive ECU Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage in isolated DC-DC converter feedback networks operating at 120 V output. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference and error amplifier bias source. Use Value: Tight 5% VZ tolerance and low dynamic impedance ensure <±1% output regulation accuracy across line/load variations. | Use Scenario: Protecting microcontroller I/O pins and sensor interfaces from load-dump transients up to 120 V in 24 V vehicle systems. IC Role / Device Role / Timing Role: Cathode-connected clamp diode shunting excess energy to ground 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 on standard FR4. |
| Telecom Line Card Protection | Programmable Logic Controller Input Conditioning |
Use Scenario: Safeguarding Ethernet PHY interface circuitry against lightning-induced surges on 48 V PoE lines. IC Role / Device Role / Timing Role: Secondary Zener clamp placed after primary TVS, providing precise 120 V threshold before breakdown. Use Value: Low reverse leakage (<1 µA) prevents signal distortion in high-impedance receive paths during normal operation. | Use Scenario: Level-shifting and voltage limiting for 120 V AC/DC input sensing circuits in modular PLC backplanes. IC Role / Device Role / Timing Role: Anode-grounded Zener regulating bias voltage for optocoupler LED drivers. Use Value: −55°C to +150°C junction temperature range ensures reliable operation in unventilated control cabinets. |
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 DO-41 through-hole package; 5 W rating; higher thermal resistance (~65°C/W) | Requires through-hole assembly and larger board area; better suited for prototyping or low-volume manual builds | Select when legacy board compatibility or higher single-pulse surge capability is prioritized over SMT density |
| SMBJ120A | TVS diode (not Zener); 120 V standoff, 133 V breakdown; 600 W peak pulse power; bidirectional | Designed for transient suppression only - not suitable for DC regulation or biasing due to wide VBR/VWM spread | Select only for surge-only protection; avoid in voltage reference or feedback loop roles where stable DC VZ is required |
Compared with 1N5375B and SMBJ120A, the 1PMT5951BE3/TR13 uniquely combines SMT footprint, 3.0 W continuous regulation capability, and tight ±5% VZ tolerance - making it optimal for space-constrained, thermally managed DC voltage reference and clamp functions where stable DC behavior is mandatory.
Availability
1PMT5951BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU overvoltage clamp, and telecom line card protection requiring stable component supply, consistent tape-and-reel delivery, and long-term lifecycle support.
Supply support for 1PMT5951BE3/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 product line was engineered for high-power-density surface-mount voltage regulation and transient clamping in harsh-environment power systems where thermal performance and assembly reliability are critical.
FAQ
What is the Zener voltage tolerance for 1PMT5951BE3/TR13?
The 1PMT5951BE3/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 (±2%, ±1%) are available with suffixes C and D respectively, but the E3/TR13 variant specifies ±5%. This tolerance directly impacts regulation accuracy in feedback networks using the 1PMT5951BE3/TR13 as a reference.
How is thermal management handled for 1PMT5951BE3/TR13 in PCB layout?
The 1PMT5951BE3/TR13 relies on TAB 1 as its primary thermal path, with a specified junction-to-TAB thermal resistance of 30°C/W. Effective thermal management requires soldering TAB 1 to a minimum 100 mm² copper pour (2 oz Cu preferred) with multiple thermal vias to inner/ground planes. The full metallic bottom and locking tab of the Powermite® package enhance conduction - without this, the 3.0 W rating cannot be sustained at ambient temperatures above 60°C.
Is 1PMT5951BE3/TR13 suitable for use in automotive applications?
Yes, the 1PMT5951BE3/TR13 is qualified for automotive use with a junction temperature range of −55°C to +150°C and >16 kV HBM ESD rating. It meets requirements for under-hood ECU overvoltage clamping and 24 V system protection, provided thermal design accounts for TAB 1 cooling. Its Powermite® package eliminates flux entrapment - a key reliability factor in high-volume automotive SMT lines where the 1PMT5951BE3/TR13 is commonly deployed.
What does the "E3/TR13" suffix indicate in 1PMT5951BE3/TR13?
The "E3" denotes Microsemi's standard ±5% Zener voltage tolerance and RoHS-compliant finish; "TR13" specifies EIA-481 tape-and-reel packaging on a 13-inch reel containing 12,000 units. This packaging format ensures compatibility with high-speed automated placement equipment and supports just-in-time manufacturing workflows where the 1PMT5951BE3/TR13 is used in volume production of industrial controls and telecom infrastructure.
Can 1PMT5951BE3/TR13 replace older through-hole Zeners like 1N5375B in existing designs?
No direct replacement is possible without PCB redesign: the 1PMT5951BE3/TR13 uses a surface-mount Powermite® package with TAB 1 cathode, while the 1N5375B is DO-41 through-hole. Though both have 120 V nominal Zener voltage, differences in thermal resistance (30°C/W vs ~65°C/W), power derating curves, and mounting mechanics mean layout, thermal, and assembly validation is required before substituting the 1PMT5951BE3/TR13 into a legacy 1N5375B design.
1PMT5951BE3/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:
- ±5%
- 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
1PMT5951BE3/TR13 FAQ
1.How can I place an order for 1PMT5951BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5951BE3/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 1PMT5951BE3/TR13 reliable?
The price and inventory of 1PMT5951BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5951BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5951BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5951BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5951BE3/TR13?
1PMT5951BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5951BE3/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 1PMT5951BE3/TR13?
For technical support, including 1PMT5951BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5951BE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5951BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5951BE3/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 1PMT5951BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5951BE3/TR13?
All 1PMT5951BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5951BE3/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 1PMT5951BE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5951BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5951BE3/TR13 Tags
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