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Microchip Technology 1PMT5951AE3/TR13
- Part No.:
- 1PMT5951AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5951AE3/TR13.pdf
- Description:
- DIODE ZENER 120V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,482
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Product details
Overview
1PMT5951AE3/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 industrial power supplies.
For engineers reviewing the 1PMT5951AE3/TR13 datasheet, 1PMT5951AE3/TR13 pinout, 1PMT5951AE3/TR13 application, or 1PMT5951AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, power derating above 60°C, reverse leakage at 91.2 V, knee current (0.25 mA), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its Powermite® package features a full metallic bottom and integral heat sink locking tab, enabling efficient thermal conduction from junction to PCB via TAB 1 - the cathode terminal - with specified thermal resistance of 30°C/W.
Electrical behavior is defined at TL = 30°C with 3.1 mA test current (IZT); dynamic impedance (ZZT = 380 Ω) and knee impedance (ZZK = 4500 Ω at IZK = 0.25 mA) reflect regulation sharpness and low-current stability. Reverse leakage remains ≤1 µA up to 91.2 V (VR), supporting reliable clamping in protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 120 V ±5% at IZT = 3.1 mA - sets precise clamping threshold for overvoltage protection |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - defines maximum continuous power handling before thermal derating |
| Dynamic Impedance | 380 Ω at IZT - indicates voltage regulation stiffness; lower values improve load regulation |
| Knee Current | 0.25 mA - minimum current needed to enter useful regulation region near VZ |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies thermal path efficiency for PCB heatsinking design |
| ESD Rating | >16 kV HBM - ensures robustness against handling-induced electrostatic discharge |
| Reverse Leakage | ≤1 µA at VR = 91.2 V - guarantees low standby current in high-impedance bias networks |
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 heat dissipation and circuit return |
| Lead 2 | Anode | Signal input terminal; reverse-biased during Zener operation; connects to protected node or reference source |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in compact footprint |
| Full metallic bottom | Eliminates solder flux entrapment risk during assembly, improving long-term reliability and solder joint integrity |
| 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 supports safe handling and integration into unshielded industrial environments |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing reference voltage in isolated DC-DC converter feedback loops operating across -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Zener diode providing precise 120 V reference for optocoupler-based error amplification. Use Value: Tight ±5% VZ tolerance and low 380 Ω dynamic impedance ensure <±1.5% output voltage drift over line/load variations. | Use Scenario: Clamping transient surges on 100 V DC bus lines in motor drive inverters subjected to IEC 61000-4-5 surge events. IC Role / Device Role / Timing Role: Primary shunt protection device absorbing energy during 1 kV/2 Ω surge pulses. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway when mounted on 2 oz copper. |
| Programmable Logic Controller Input Protection | High-Voltage Sensor Biasing |
Use Scenario: Protecting 24–120 V digital input channels from field-wiring faults and induced transients in factory automation systems. IC Role / Device Role / Timing Role: Front-end Zener clamp limiting input voltage to safe levels for downstream opto-isolators and Schmitt triggers. Use Value: ≤1 µA reverse leakage at 91.2 V prevents false triggering; >16 kV HBM rating withstands ESD events during panel servicing. | Use Scenario: Providing stable bias voltage for avalanche photodiode (APD) bias networks requiring 110–130 V DC with minimal ripple. IC Role / Device Role / Timing Role: Low-noise voltage reference source maintaining APD gain consistency across temperature. Use Value: 380 Ω dynamic impedance and 0.25 mA knee current enable stable regulation even under microamp-level load currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ120A | TVS diode (unidirectional), 120 V standoff, 192 V clamping, 1500 W peak pulse power | Designed for transient suppression, not precision regulation; higher clamping voltage, no tight VZ tolerance | Select for surge-heavy environments where fast response matters more than DC accuracy |
| 1N5387B | Through-hole Zener, 120 V, 5 W, DO-201AD package, 400 Ω ZZT, 35°C/W θJA | Larger footprint, higher thermal resistance, incompatible with SMT lines | Choose only if legacy through-hole assembly is required and board space permits larger package |
Compared with SMCJ120A and 1N5387B, the 1PMT5951AE3/TR13 uniquely combines SMT compatibility, 3.0 W continuous regulation capability, ±5% VZ tolerance, and 30°C/W thermal resistance - making it optimal for space-constrained, thermally managed precision voltage reference designs.
Availability
1PMT5951AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection circuits, and programmable logic controller input protection requiring stable component supply and consistent parametric performance across production batches.
Supply support for 1PMT5951AE3/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 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 delivers high-power surface-mount voltage regulation in miniature packages, designed specifically for thermally demanding, space-constrained industrial and power conversion applications.
FAQ
What is the Zener voltage tolerance for 1PMT5951AE3/TR13?
The 1PMT5951AE3/TR13 has a standard Zener voltage tolerance of ±5% at 120 V nominal, measured at IZT = 3.1 mA and TAB 1 temperature of 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the E3 suffix denotes the standard ±5% version. This tolerance directly impacts regulation accuracy in feedback and protection circuits.
How is thermal management handled for 1PMT5951AE3/TR13 in PCB layout?
Thermal management for 1PMT5951AE3/TR13 relies on soldering TAB 1 (cathode) to an adequately sized copper pour, as the device specifies 30°C/W junction-to-TAB1 thermal resistance. The Powermite® package's full metallic bottom and locking tab provide direct conduction; exceeding 3.0 W requires derating per the datasheet curve, and PCB copper area must be optimized to maintain TAB 1 ≤60°C under full load.
What does the 'TR13' suffix indicate in 1PMT5951AE3/TR13?
The 'TR13' suffix in 1PMT5951AE3/TR13 indicates tape-and-reel packaging per EIA-481 standard on a 13-inch reel containing 12,000 pieces. This format is optimized for high-volume automated SMT placement. The 'E3' portion denotes the ±5% Zener voltage tolerance and RoHS-compliant finish, distinguishing it from legacy non-RoHS or tighter-tolerance variants.
Can 1PMT5951AE3/TR13 be used as a replacement for through-hole Zeners like 1N5387B?
1PMT5951AE3/TR13 is not a drop-in replacement for 1N5387B due to different package (Powermite® vs. DO-201AD), thermal profile (30°C/W vs. 35°C/W), and mounting method. While both regulate at 120 V, the 1PMT5951AE3/TR13 requires SMT reflow and PCB thermal design, whereas 1N5387B uses through-hole wave soldering - substitution demands layout and thermal redesign.
What is the maximum reverse leakage current for 1PMT5951AE3/TR13 at its rated reverse voltage?
The maximum reverse leakage current for 1PMT5951AE3/TR13 is 1 µA at VR = 91.2 V, as specified in the Electrical Characteristics table. This low leakage ensures minimal loading on high-impedance bias networks and preserves accuracy in precision reference applications - critical when used in sensor biasing or feedback divider chains where leakage could shift operating points.
1PMT5951AE3/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
1PMT5951AE3/TR13 FAQ
1.How can I place an order for 1PMT5951AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5951AE3/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 1PMT5951AE3/TR13 reliable?
The price and inventory of 1PMT5951AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5951AE3/TR13 is usually 5 days.
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1PMT5951AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5951AE3/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 1PMT5951AE3/TR13?
For technical support, including 1PMT5951AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5951AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5951AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5951AE3/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 1PMT5951AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5951AE3/TR13?
All 1PMT5951AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5951AE3/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 1PMT5951AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5951AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5951AE3/TR13 Tags
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