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Microchip Technology 1PMT5953E3/TR7
- Part No.:
- 1PMT5953E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5953E3/TR7.pdf
- Description:
- DIODE ZENER 150V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,497
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Product details
Overview
1PMT5953E3/TR7 from Microsemi is a 150 V, ±5% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 temperature of 60°C, with 600 Ω dynamic impedance at 2.5 mA test current and thermal resistance of 30°C/W junction-to-TAB1 - used for precision voltage regulation in high-reliability power supply rails.
For engineers reviewing the 1PMT5953E3/TR7 datasheet, 1PMT5953E3/TR7 pinout, 1PMT5953E3/TR7 application, or 1PMT5953E3/TR7 equivalent, key selection criteria include zener voltage stability under thermal stress, low reverse leakage (<1 µA at 114 V), ESD robustness (>16 kV HBM), and compatibility with automated SMT assembly using EIA-481 tape-and-reel packaging.
Technical Context
This device operates as a single-element, unidirectional Zener diode with cathode designated by TAB 1. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and eliminate solder flux entrapment during reflow.
Electrical behavior is defined at TL = 30°C with VZ measured 20 seconds after DC current application; dynamic impedance (ZZT) is derived using 60 Hz RMS AC current equal to 10% of IZT, and maximum reverse current IR is specified at VR = 114 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 150 V ±5% at IZT = 2.5 mA - sets precise clamping level for overvoltage protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-power regulation without external heatsink in compact layouts |
| Dynamic Impedance (ZZT) | 600 Ω at IZT = 2.5 mA - indicates moderate voltage regulation sensitivity to current variation |
| Reverse Leakage (IR) | <1 µA at VR = 114 V - ensures minimal standby power loss in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB1 - supports thermal management via PCB copper pour connected to TAB 1 |
| ESD Rating | >16 kV per Human Body Model - provides robust handling in automated manufacturing environments |
| Junction Temp Range | –55°C to +150°C - suitable for extended industrial and aerospace ambient conditions |
Pinout & Package
The 1PMT5953E3/TR7 uses a 2-terminal Powermite® surface-mount package (DO-216 outline) with molded body and full metallic bottom. Cathode is designated by TAB 1; mounting orientation is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and voltage reference node; must be connected to thermal pad on PCB |
| Lead 2 | Anode | Current entry point during forward bias; electrically isolated from TAB 1 |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | Mechanically anchors device while conducting heat directly from junction to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term solder joint reliability |
| Automated insertion compatibility | Designed for pick-and-place and reflow processes per EIA-481 tape-and-reel standard |
| Low reverse leakage | <1 µA at 76% of VZ (114 V) - maintains accuracy in high-impedance voltage reference chains |
Applications
| Industrial Power Supply Regulation | Aerospace Voltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback references in isolated DC-DC converters operating across –40°C to +125°C ambient. IC Role / Device Role / Timing Role: Zener diode providing stable 150 V reference for optocoupler-based error amplification. Use Value: Tight ±5% VZ tolerance and 30°C/W thermal resistance ensure <±1.2 V drift over full temperature range. | Use Scenario: Overvoltage protection on avionics bus lines subject to load dump transients up to 180 V. IC Role / Device Role / Timing Role: Clamping diode shunting excess energy into thermal mass of aluminum chassis. Use Value: 3.0 W power rating and >16 kV HBM ESD rating withstand repeated surge events without degradation. |
| Test Equipment Reference Source | Medical Imaging HV Bias |
Use Scenario: Generating calibrated high-voltage references in portable multimeters and calibration standards. IC Role / Device Role / Timing Role: Precision Zener element in temperature-compensated reference divider networks. Use Value: Low 1 µA IR at 114 V minimizes loading error in 10 MΩ+ input impedance measurement paths. | Use Scenario: Biasing photomultiplier tube anodes requiring stable 150 V with minimal ripple-induced noise. IC Role / Device Role / Timing Role: Regulator diode filtering switching noise from DC-DC converter outputs. Use Value: 600 Ω ZZT limits output impedance rise under varying load, preserving signal integrity in low-current analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ150A | TVS diode (not Zener); 150 V standoff, 3.0 kW peak pulse power, higher capacitance | Transient suppression only - not suitable for continuous regulation or reference use | Select only for surge-only protection; not interchangeable for voltage reference or bias functions |
| 1N5375B | Through-hole DO-201AD package; same 150 V/3 W rating but 65°C/W thermal resistance and no metallic bottom | Requires larger PCB footprint and lacks flux-trap-free assembly benefit | Prefer when legacy through-hole assembly is mandated or thermal constraints permit higher RθJA |
Compared with SMCJ150A and 1N5375B, the 1PMT5953E3/TR7 uniquely combines surface-mount compatibility, 30°C/W thermal performance, and true Zener regulation capability - making it optimal for space-constrained, thermally demanding, continuously biased applications.
Availability
1PMT5953E3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, aerospace voltage clamps, test equipment reference sources, and medical imaging HV bias circuits requiring stable component supply with consistent parametric performance across production lots.
Supply support for 1PMT5953E3/TR7 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 defense, aerospace, and industrial markets.
The Powermite® Zener diode product line was engineered to deliver high-power surface-mount voltage regulation in ultra-compact packages - targeting applications where thermal efficiency, automated assembly, and long-term stability outweigh cost-driven generic alternatives.
FAQ
What is the zener voltage tolerance for 1PMT5953E3/TR7?
The 1PMT5953E3/TR7 has a standard zener voltage tolerance of ±5% at 150 V nominal, measured at 2.5 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the E3/TR7 variant specifies ±5%.
How is thermal management implemented in the 1PMT5953E3/TR7 package?
The 1PMT5953E3/TR7 uses its metallic TAB 1 as the primary thermal path, achieving 30°C/W junction-to-tab thermal resistance. Effective cooling requires direct connection of TAB 1 to a large copper pour on the PCB - the full metallic bottom and locking tab design maximize conduction while eliminating flux entrapment risks during reflow.
Is 1PMT5953E3/TR7 compatible with standard SMT assembly processes?
Yes, the 1PMT5953E3/TR7 is fully compatible with automated SMT assembly. It ships in EIA-481 compliant tape-and-reel format (7-inch reel, 3,000 pieces), and its Powermite® package geometry supports reliable pick-and-place and reflow soldering without tombstoning or misalignment.
What is the maximum reverse leakage current for 1PMT5953E3/TR7?
The maximum reverse leakage current for 1PMT5953E3/TR7 is 1 µA at a reverse voltage of 114 V (76% of nominal VZ), tested at TL = 30°C. This low IR value ensures minimal parasitic loading in high-impedance reference and bias networks.
Does 1PMT5953E3/TR7 meet any ESD immunity standards?
Yes, the 1PMT5953E3/TR7 is rated for >16 kV per the Human Body Model (HBM) ESD standard. This high immunity level supports robust handling during board assembly and field service without requiring additional ESD protection circuitry.
1PMT5953E3/TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 150 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 600 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 114 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
1PMT5953E3/TR7 FAQ
1.How can I place an order for 1PMT5953E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5953E3/TR7 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 1PMT5953E3/TR7 reliable?
The price and inventory of 1PMT5953E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5953E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5953E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5953E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5953E3/TR7?
1PMT5953E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5953E3/TR7 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 1PMT5953E3/TR7?
For technical support, including 1PMT5953E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5953E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5953E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5953E3/TR7 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 1PMT5953E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5953E3/TR7?
All 1PMT5953E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5953E3/TR7, 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 1PMT5953E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5953E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5953E3/TR7 Tags
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