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Microchip Technology 1PMT5955B/TR13
- Part No.:
- 1PMT5955B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5955B/TR13.pdf
- Description:
- DIODE ZENER 180V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,139
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Product details
Overview
1PMT5955B/TR13 from Microsemi is a 180 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 900 Ω dynamic impedance at 2.1 mA test current and 7000 µA max reverse leakage at 144 V. It serves as a precision voltage reference or overvoltage clamp in high-reliability power supply feedback loops.
For engineers reviewing the 1PMT5955B/TR13 datasheet, 1PMT5955B/TR13 pinout, 1PMT5955B/TR13 application, or 1PMT5955B/TR13 equivalent, key selection criteria 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 - critical for industrial power converters and telecom surge protection circuits.
Technical Context
This device operates as a two-terminal voltage-regulating diode with cathode designated by TAB 1. Its Zener voltage is specified at 2.1 mA test current (IZT) with junction temperature controlled at 30°C, and voltage measurement performed 20 seconds after DC current application to ensure thermal stabilization.
The Powermite® package integrates a full metallic bottom and locking tab that functions as an integral heat sink, achieving 30°C/W thermal resistance from junction to TAB 1. Reverse leakage is guaranteed ≤7000 µA at VR = 144 V (80% of VZ), and dynamic impedance is measured using 60 Hz RMS AC current equal to 10% of IZT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 180 V ±5% at IZT = 2.1 mA - defines stable regulation point for high-voltage reference or clamping |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation in compact SMT layouts without external heatsink |
| Dynamic Impedance (ZZT) | 900 Ω at IZT = 2.1 mA - indicates moderate regulation stiffness; suitable for non-critical voltage references |
| Reverse Leakage (IR) | ≤7000 µA at VR = 144 V - ensures low standby loss in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - allows direct thermal coupling to PCB copper pour via metallic tab |
| ESD Rating | >16 kV per Human Body Model - supports handling and assembly in standard electronics manufacturing environments |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter useful regulation region; impacts low-current bias design |
Pinout & Package
Package: Powermite® (DO-216AA), surface-mount molded case with full metallic bottom and integral heat-sink locking tab. Cathode is designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal; must be soldered to thermal pad for rated 3.0 W dissipation |
| Lead 2 | Anode | Standard anode connection; no thermal function - routed as signal/power return path |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat-sink locking tab | Enables 3.0 W power handling in micro-SMT footprint by direct thermal conduction to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| DO-216AA mechanical outline | Ensures compatibility with automated pick-and-place equipment and standard tape-and-reel feeders (EIA-481) |
| 180 V Zener voltage with ±5% tolerance | Provides stable clamping threshold for overvoltage protection in 150–200 V DC bus applications |
Applications
| Industrial Power Supply Feedback | Telecom Line Surge Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters with optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference providing precise 180 V threshold to control TL431 or optocoupler bias current. Use Value: Maintains ±5% output regulation across line/load/temperature with minimal board space and no external heatsink. | Use Scenario: Protecting Ethernet PHY interfaces against lightning-induced surges on 48 V DC power rails. IC Role / Device Role / Timing Role: High-voltage transient voltage suppressor clamping rail to 180 V before downstream LDOs or DC-DC controllers. Use Value: Absorbs 3.0 W peak surge energy while maintaining <7000 µA leakage at normal operating voltage (36–57 V). |
| High-Voltage Sensor Biasing | Automotive Battery Monitoring |
Use Scenario: Providing stable bias voltage for HV resistive divider networks feeding ADC inputs in battery management systems. IC Role / Device Role / Timing Role: Precision Zener reference ensuring accurate scaling of 0–400 V measurements. Use Value: Delivers 180 V reference with 900 Ω dynamic impedance, minimizing measurement error from source impedance interaction. | Use Scenario: Overvoltage detection in 24 V commercial vehicle battery monitoring circuits exposed to load-dump transients. IC Role / Device Role / Timing Role: Clamping element triggering shutdown when battery voltage exceeds safe threshold (e.g., >160 V during load dump). Use Value: Activates reliably at 180 V with 0.25 mA knee current, enabling fast response without false triggers at nominal 28 V operation. |
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 180 V VZ, but in DO-204AL (DO-41) through-hole package; 5 W rating; higher ZZT (1200 Ω) | Requires PCB through-holes and larger layout area; better suited for prototyping or legacy designs | Select 1N5375B only if through-hole assembly or higher power margin (>3 W) is required |
| BZX85C180 | 180 V VZ in DO-41; 1.3 W rating; ±5% tolerance; higher IR (100 µA at 144 V) | Limited to lower-power biasing; unsuitable for sustained 3 W clamping | Choose BZX85C180 only for cost-sensitive, low-power reference applications where thermal performance is secondary |
Compared with 1PMT5955B/TR13, 1N5375B offers higher power headroom but sacrifices SMT compatibility and thermal efficiency, while BZX85C180 reduces cost and size but cannot sustain 3.0 W dissipation - making 1PMT5955B/TR13 the optimal choice for space-constrained, thermally demanding industrial SMT designs.
Availability
1PMT5955B/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protection, high-voltage sensor biasing, and automotive battery monitoring requiring stable component supply and consistent Zener voltage performance.
Supply support for 1PMT5955B/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 family, including 1PMT5955B/TR13, was engineered for high-power density surface-mount voltage regulation in mission-critical power conversion and protection circuits where thermal performance and assembly reliability are paramount.
FAQ
What is the Zener voltage tolerance for 1PMT5955B/TR13?
The 1PMT5955B/TR13 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 base 1PMT5955B/TR13 part uses the ±5% grade.
How is thermal performance achieved in the 1PMT5955B/TR13 Powermite® package?
The 1PMT5955B/TR13 achieves 3.0 W power dissipation via its metallic TAB 1, which acts as an integral heat sink with 30°C/W junction-to-tab thermal resistance. The full metallic bottom eliminates flux entrapment, and the locking tab ensures robust thermal contact to PCB copper pours during reflow soldering.
What is the maximum reverse leakage current for 1PMT5955B/TR13?
The 1PMT5955B/TR13 specifies a maximum reverse leakage current of 7000 µA at VR = 144 V (80% of nominal VZ). This value is guaranteed across the operating temperature range and is critical for low-power bias network integrity in high-impedance applications.
Can 1PMT5955B/TR13 be used in automatic insertion equipment?
Yes, the 1PMT5955B/TR13 is explicitly designed for compatibility with automated insertion equipment. Its Powermite® package conforms to EIA-481 tape-and-reel standards (7″ reel: 3,000 pcs; 13″ reel: 12,000 pcs) and features a symmetric, robust mechanical outline optimized for pick-and-place accuracy.
What is the dynamic impedance of 1PMT5955B/TR13 and how is it measured?
The 1PMT5955B/TR13 has a dynamic impedance (ZZT) of 900 Ω, measured at IZT = 2.1 mA using a 60 Hz RMS AC current equal to 10% of IZT superimposed on the DC test current - per Microsemi Note 202 methodology. This reflects regulation stiffness under small-signal AC perturbations.
1PMT5955B/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):
- 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
1PMT5955B/TR13 FAQ
1.How can I place an order for 1PMT5955B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5955B/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 1PMT5955B/TR13 reliable?
The price and inventory of 1PMT5955B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5955B/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5955B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5955B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5955B/TR13?
1PMT5955B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5955B/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 1PMT5955B/TR13?
For technical support, including 1PMT5955B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5955B/TR13 requirements.
6.How does Aetrix verify that 1PMT5955B/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5955B/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 1PMT5955B/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5955B/TR13?
All 1PMT5955B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5955B/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 1PMT5955B/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5955B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5955B/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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