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Microchip Technology 1PMT5955BE3/TR7
- Part No.:
- 1PMT5955BE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5955BE3/TR7.pdf
- Description:
- DIODE ZENER 180V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,142
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Product details
Overview
1PMT5955BE3/TR7 from Microsemi is a 180 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 900 Ω dynamic impedance at 2.1 mA test current and 7000 µA max reverse leakage at 144 V, used for precision voltage regulation and overvoltage protection in high-reliability power supplies and industrial control circuits.
For engineers reviewing the 1PMT5955BE3/TR7 datasheet, 1PMT5955BE3/TR7 pinout, 1PMT5955BE3/TR7 application, or 1PMT5955BE3/TR7 equivalent, key selection considerations include its 180 V nominal Zener voltage, 3.0 W thermal capability with metallic-tab heat sinking, DO-216 mechanical outline, and ESD rating >16 kV HBM - all critical for stable clamping in automotive body electronics and telecom power rails.
Technical Context
This device operates as a voltage-reference and transient-suppression element in DC bias networks, leveraging its tightly controlled 180 V Zener breakdown with low knee impedance (≤900 Ω) and minimal voltage drift across temperature (–55°C to +150°C junction range). Its full metallic bottom and integral locking tab enable direct thermal conduction to PCB copper, supporting sustained 3.0 W dissipation when mounted on ≥1 sq-in thermal pad.
The 1PMT5955BE3/TR7 exhibits <7000 µA reverse leakage at VR = 144 V (80% of VZ), confirming stable regulation under partial overvoltage stress, and maintains ≤1.2 V forward voltage at 200 mA - enabling bidirectional protection schemes when paired with series diodes or TVS arrays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 180 V ±5% at IZT = 2.1 mA - defines precise clamping threshold for 144–180 V system rails |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient absorption without external heatsink |
| Dynamic Impedance (ZZT) | 900 Ω at IZT = 2.1 mA - ensures minimal voltage shift under load variation in feedback loops |
| Reverse Leakage (IR) | ≤7000 µA at VR = 144 V - guarantees low standby current in always-on protection circuits |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows accurate thermal modeling when PCB copper area is known |
| ESD Rating | >16 kV HBM - meets IEC 61000-4-2 Level 4 for unshielded board-level interfaces |
| Junction Temp Range | –55°C to +150°C - supports operation in under-hood automotive and industrial motor drive environments |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical cathode connection; must be soldered to ≥1 sq-in copper pour for rated 3.0 W |
| Lead 2 | Anode | Standard anode terminal; routed to ground or low-impedance return path in clamp configuration |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, ensuring void-free thermal interface and long-term reliability |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| ESD robustness | >16 kV per Human Body Model - reduces need for upstream ESD protection in cost-sensitive designs |
| Automated assembly compatibility | Designed for pick-and-place and reflow with EIA-481 tape-and-reel packaging (3,000 pcs/7″ reel) |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Stabilizing reference voltage for isolated DC-DC feedback in 24 V industrial SMPS. IC Role / Device Role / Timing Role: Zener reference diode providing 180 V clamp and precision bias for optocoupler feedback network. Use Value: Maintains ±5% output regulation across –40°C to +105°C ambient due to tight VZ tolerance and low ZZT. | Use Scenario: Overvoltage protection on LIN bus transceiver supply rail exposed to load-dump transients. IC Role / Device Role / Timing Role: Standoff clamping diode absorbing 3.0 W pulses up to 100 ms duration without degradation. Use Value: Metallic tab conducts heat directly into chassis ground plane, preventing thermal runaway during ISO 7637-2 Pulse 5a events. |
| Telecom Line Card Protection | Renewable Energy Inverter Monitoring |
Use Scenario: Protecting analog front-end ADC inputs from induced surges on 48 V telecom distribution lines. IC Role / Device Role / Timing Role: Precision Zener shunt limiting input voltage to 180 V before signal conditioning stage. Use Value: Low 7000 µA IR at 144 V ensures negligible loading on high-impedance sensor inputs during normal operation. | Use Scenario: Voltage monitoring node in solar string combiner box with 1000 V DC bus. IC Role / Device Role / Timing Role: High-voltage reference element scaling bus voltage for isolation amplifier input. Use Value: Stable 180 V Zener point enables accurate 1000 V measurement using 5.56× resistive divider without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5377B | Same 180 V VZ, but DO-201AD package; higher thermal resistance (50°C/W), no metallic bottom | Limited to ≤1.5 W continuous dissipation; requires larger heatsink or derating in compact layouts | Choose only if legacy through-hole footprint or lower-cost sourcing is prioritized over thermal performance |
| BZX85C180 | 180 V VZ, ±5%, but 1.3 W rating and TO-204AA (DO-35) glass package; no integrated heat sink | Suitable only for low-duty-cycle transients; cannot sustain 3.0 W clamping energy | Select when space constraints prohibit Powermite® footprint and peak pulse energy remains below 10 J |
Compared with 1PMT5955BE3/TR7, the 1N5377B offers identical voltage but sacrifices thermal efficiency and flux-free assembly, while BZX85C180 trades power handling for legacy compatibility - making 1PMT5955BE3/TR7 the sole choice for high-reliability 3.0 W SMT Zener regulation.
Availability
1PMT5955BE3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom line card protection, and renewable energy inverter monitoring requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5955BE3/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 aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was engineered for high-power-density surface-mount voltage regulation and transient suppression where thermal management and automated assembly reliability are critical design constraints.
FAQ
What is the Zener voltage tolerance for 1PMT5955BE3/TR7?
The 1PMT5955BE3/TR7 has a standard Zener voltage tolerance of ±5% at 180 V, measured at 2.1 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D, respectively, but the E3/TR7 variant uses the standard ±5% grade.
Can 1PMT5955BE3/TR7 be used in automotive under-hood applications?
Yes, the 1PMT5955BE3/TR7 supports junction temperatures from –55°C to +150°C and features a full metallic bottom for reliable thermal transfer, making it suitable for under-hood automotive applications such as body control module power rail clamping, provided PCB thermal design meets the 30°C/W junction-to-TAB1 requirement.
What is the maximum reverse leakage current for 1PMT5955BE3/TR7?
The maximum reverse leakage current for 1PMT5955BE3/TR7 is 7000 µA at a reverse voltage of 144 V (80% of nominal VZ), tested at TL = 30°C. This value ensures minimal standby power loss in always-on protection circuits while maintaining effective clamping margin.
How is thermal performance achieved in the Powermite® package of 1PMT5955BE3/TR7?
The 1PMT5955BE3/TR7 achieves thermal performance via its full metallic bottom and integral locking tab, which provide direct conduction from the silicon junction to the PCB copper. With a specified thermal resistance of 30°C/W junction-to-TAB1, it sustains 3.0 W dissipation when mounted on ≥1 square inch of 2-oz copper.
Is 1PMT5955BE3/TR7 compatible with standard SMT reflow processes?
Yes, the 1PMT5955BE3/TR7 is qualified for standard lead-free reflow profiles and supplied in EIA-481 tape-and-reel format (3,000 pieces per 7-inch reel). Its Powermite® package geometry and locking tab ensure stable placement and alignment during automated pick-and-place and reflow soldering.
1PMT5955BE3/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):
- 180 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 800 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 136.8 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
1PMT5955BE3/TR7 FAQ
1.How can I place an order for 1PMT5955BE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5955BE3/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 1PMT5955BE3/TR7 reliable?
The price and inventory of 1PMT5955BE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5955BE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5955BE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5955BE3/TR7 transactions.
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4.How is shipping managed for 1PMT5955BE3/TR7?
1PMT5955BE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5955BE3/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 1PMT5955BE3/TR7?
For technical support, including 1PMT5955BE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5955BE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5955BE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5955BE3/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 1PMT5955BE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5955BE3/TR7?
All 1PMT5955BE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5955BE3/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 1PMT5955BE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5955BE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5955BE3/TR7 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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