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Microchip Technology 1PMT5953AE3/TR7
- Part No.:
- 1PMT5953AE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5953AE3/TR7.pdf
- Description:
- DIODE ZENER 150V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,078
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Product details
Overview
1PMT5953AE3/TR7 from Microsemi is a 150 V, ±5% tolerance Zener diode in the Powermite® surface-mount package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 600 Ω dynamic impedance at 2.5 mA test current and 16 kV HBM ESD rating - used for precision voltage regulation and overvoltage protection in industrial power supplies.
For engineers reviewing the 1PMT5953AE3/TR7 datasheet, 1PMT5953AE3/TR7 pinout, 1PMT5953AE3/TR7 application, or 1PMT5953AE3/TR7 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), reverse leakage (<6000 µA at 1 V), knee current (0.25 mA), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This device operates as a two-terminal voltage reference diode with cathode designated by TAB 1. Its Powermite® package integrates a full metallic bottom and locking tab for mechanical stability and thermal conduction, enabling direct mounting to PCB copper for enhanced heat dissipation.
The 1PMT5953AE3/TR7 exhibits a nominal zener voltage of 150 V at 2.5 mA (IZT), with 600 Ω dynamic impedance (ZZT) and 1200 Ω knee impedance (ZZK) at 0.25 mA (IZK), meeting tight regulation requirements under low-current bias conditions typical in standby monitoring circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 150 V ±5% at IZT = 2.5 mA - defines stable clamping threshold for overvoltage protection circuits. |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without external heatsinking. |
| Dynamic Impedance | 600 Ω at IZT - ensures minimal voltage deviation under load current changes in regulation loops. |
| Knee Current | 0.25 mA - specifies minimum bias current to achieve stable zener conduction near breakdown. |
| Thermal Resistance | 30°C/W junction-to-TAB - allows accurate thermal design when mounted on copper pour or thermal pad. |
| ESD Rating | >16 kV HBM - provides robust handling during SMT assembly and board-level integration. |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral locking tab; cathode identified by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical connection point - must be soldered to thermal pad for rated 3.0 W operation. |
| Lead 2 | Anode | Standard anode terminal - connects to ground or lower-potential node in shunt regulation configuration. |
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-41. |
| Full metallic bottom | Eliminates solder flux entrapment risk and improves thermal transfer to PCB copper layers. |
| Integral heat sink locking tab | Provides mechanical anchoring during reflow and enhances thermal conduction from junction to TAB 1. |
| 16 kV HBM ESD rating | Reduces need for upstream ESD protection components in sensitive input stage designs. |
Applications
| Industrial Power Supply Monitoring | Telecom Line Card Protection |
|---|---|
Use Scenario: Monitoring +150 V rail in telecom shelf power distribution units for undervoltage/overvoltage fault detection. IC Role / Device Role / Timing Role: Shunt voltage reference and clamp - holds sense node at precise 150 V threshold during normal operation and diverts surge current during transients. Use Value: Enables reliable fault flag generation without drift over temperature due to tight ±5% VZ tolerance and low ZZT. | Use Scenario: Protecting analog front-end circuitry on DSL line cards from lightning-induced surges on tip/ring lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp - absorbs energy from fast-rising transients before downstream op-amps or ADCs are damaged. Use Value: Delivers 3.0 W peak pulse power handling with 30°C/W thermal resistance, reducing need for series impedance or secondary clamping stages. |
| Automotive Body Control Module | Medical Imaging Power Sequencing |
Use Scenario: Regulating auxiliary 150 V supply for LED driver ICs in adaptive headlight systems. IC Role / Device Role / Timing Role: Precision voltage reference - sets feedback threshold for isolated flyback controller operating across -40°C to +125°C ambient. Use Value: Maintains regulation accuracy over wide temperature range due to low thermal resistance and specified VZ drift behavior per Micro Note 202. | Use Scenario: Controlling power-up sequencing of high-voltage X-ray generator modules requiring stable 150 V bias rails. IC Role / Device Role / Timing Role: Voltage supervisor element - triggers enable signal only when 150 V rail reaches ±5% window, ensuring safe subsystem activation. Use Value: Guarantees timing-critical startup integrity via repeatable knee conduction at 0.25 mA, validated per JEDEC JESD22-A114. |
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 150 V nominal VZ, but DO-204AL (DO-41) through-hole package; 3.0 W rating at 75°C ambient, not case temperature. | Requires manual or wave-solder assembly; lacks integrated heat sink tab and metallic bottom. | Select when legacy through-hole layout exists and thermal management uses external heatsink. |
| SMBJ150A | TVS diode (not Zener), 150 V standoff, 600 W peak pulse power - no regulated DC clamping characteristic. | Designed for transient suppression only; unsuitable for precision DC voltage reference or regulation. | Select only for surge-only protection where steady-state regulation is handled elsewhere. |
Compared with 1N5375B and SMBJ150A, the 1PMT5953AE3/TR7 uniquely combines surface-mount manufacturability, case-temperature–referenced 3.0 W rating, and true Zener regulation performance - making it optimal for space-constrained, thermally demanding DC reference applications.
Availability
1PMT5953AE3/TR7 is available at Aetrix Electronics and suitable for industrial power supply monitoring, telecom line card protection, and automotive body control module designs requiring stable component supply and qualified SMT-compatible Zener diodes.
Supply support for 1PMT5953AE3/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 semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The Powermite® Zener diode family, including 1PMT5953AE3/TR7, was engineered for high-power density surface-mount voltage regulation in harsh-environment power systems where thermal performance and assembly reliability are critical.
FAQ
What is the zener voltage tolerance for 1PMT5953AE3/TR7?
The 1PMT5953AE3/TR7 has a standard zener voltage tolerance of ±5% at 2.5 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D, but the E3/TR7 variant specifies ±5%. This tolerance directly impacts regulation accuracy in precision reference applications.
How is thermal performance defined for 1PMT5953AE3/TR7?
Thermal performance of the 1PMT5953AE3/TR7 is defined by a junction-to-TAB thermal resistance of 30°C/W. The 3.0 W power rating applies specifically when TAB 1 is held at 60°C - not ambient temperature. Proper PCB copper area under TAB 1 is required to achieve this rating in actual designs.
Is 1PMT5953AE3/TR7 compatible with automated SMT assembly?
Yes, the 1PMT5953AE3/TR7 is fully compatible with automated insertion and reflow processes. It ships in EIA-481 tape-and-reel format (7-inch reel, 3,000 pieces), and its Powermite® package features a locking tab and full metallic bottom designed to prevent tombstoning and flux entrapment during SMT assembly.
What is the maximum reverse leakage current for 1PMT5953AE3/TR7?
The maximum reverse leakage current for 1PMT5953AE3/TR7 is 6000 µA at 1 V reverse voltage (VR), measured at TL = 30°C. This parameter is critical for low-power standby circuits where quiescent current must remain predictable and bounded across temperature and voltage stress.
Does 1PMT5953AE3/TR7 have a specified ESD rating?
Yes, the 1PMT5953AE3/TR7 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as confirmed in the MSC0995 datasheet. This high rating supports robust handling during manufacturing and reduces susceptibility to field failures caused by electrostatic discharge events.
1PMT5953AE3/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:
- ±10%
- 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
1PMT5953AE3/TR7 FAQ
1.How can I place an order for 1PMT5953AE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5953AE3/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 1PMT5953AE3/TR7 reliable?
The price and inventory of 1PMT5953AE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5953AE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5953AE3/TR7?
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4.How is shipping managed for 1PMT5953AE3/TR7?
1PMT5953AE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5953AE3/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 1PMT5953AE3/TR7?
For technical support, including 1PMT5953AE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5953AE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5953AE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5953AE3/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 1PMT5953AE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5953AE3/TR7?
All 1PMT5953AE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5953AE3/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 1PMT5953AE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5953AE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5953AE3/TR7 Tags
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