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Microchip Technology 1PMT5952A/TR7
- Part No.:
- 1PMT5952A/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5952A/TR7.pdf
- Description:
- DIODE ZENER 130V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,035
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Product details
Overview
1PMT5952A/TR7 from Microsemi is a 130 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 450 Ω dynamic impedance at 2.9 mA test current and thermal resistance of 30°C/W junction-to-TAB1 - used for precision voltage regulation and overvoltage protection in compact DC power supplies.
For engineers reviewing the 1PMT5952A/TR7 datasheet, 1PMT5952A/TR7 pinout, 1PMT5952A/TR7 application, or 1PMT5952A/TR7 equivalent, key selection criteria include zener voltage accuracy, power derating above 60°C, reverse leakage at 104 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 two-terminal voltage reference with sharp knee characteristics (IZK = 0.25 mA, ZZK = 5000 Ω), enabling stable regulation even under low-current standby conditions. Its full metallic bottom and integral locking tab provide direct thermal conduction to the PCB pad, supporting reliable 3.0 W operation when mounted on ≥1 sq-in copper area.
The 1PMT5952A/TR7 exhibits low reverse leakage (IR ≤ 1 µA at VR = 104 V) and tight voltage stability across -55°C to +150°C junction temperature range, making it suitable for industrial and automotive environments where thermal cycling and long-term drift are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 130 V ±5% at IZT = 2.9 mA, TL = 30°C - defines nominal regulation point with predictable deviation under load and temperature |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - requires thermal design with adequate copper area to maintain safe junction temperature |
| Dynamic Impedance (ZZT) | 450 Ω at IZT = 2.9 mA - determines output voltage variation under changing load current |
| Knee Impedance (ZZK) | 5000 Ω at IZK = 0.25 mA - indicates regulation onset threshold for low-current biasing applications |
| Reverse Leakage (IR) | ≤1 µA at VR = 104 V - ensures minimal quiescent current in high-impedance sensing or standby circuits |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables thermal modeling for PCB pad sizing and reliability prediction |
| ESD Rating | >16 kV per Human Body Model - supports handling and assembly without external protection circuitry |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1; DO-216 outline; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection - must be soldered to ≥1 sq-in copper pour for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal - routed away from high-thermal zones to avoid localized heating |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W capability previously limited to larger through-hole packages |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term solder joint integrity and thermal interface reliability |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB, reducing thermal resistance by ~40% vs. standard SOD-123 |
| ESD robustness | >16 kV HBM rating allows direct integration into unshielded front-end circuits without additional ESD protection components |
Applications
| Industrial DC Power Supply Regulation | Automotive Load-Dump Protection |
|---|---|
Use Scenario: Stabilizing reference voltage in isolated flyback auxiliary supplies for PLC I/O modules operating from 24–48 VDC input. IC Role / Device Role / Timing Role: Zener diode acting as primary shunt regulator and overvoltage clamp for feedback loop and bias winding. Use Value: Maintains ±5% output regulation across -40°C to +85°C ambient with <1 µA leakage, minimizing standby loss and ensuring consistent controller startup. | Use Scenario: Clamping transient spikes up to 120 V during ISO 7637-2 Pulse 5a load-dump events in 12 V automotive ECUs. IC Role / Device Role / Timing Role: Standby-mode overvoltage protector placed across main DC input rail before DC/DC converter stage. Use Value: Absorbs 3.0 W peak energy without degradation, leveraging 30°C/W thermal resistance to limit junction rise to <90°C during 400 ms pulse. |
| Telecom Line Card Voltage Reference | Medical Sensor Biasing |
Use Scenario: Providing stable 130 V bias for avalanche photodiode (APD) arrays in fiber-optic receiver line cards. IC Role / Device Role / Timing Role: Precision Zener reference establishing APD reverse-bias voltage with minimal temperature-induced drift. Use Value: Delivers <0.1%/°C voltage drift and <1 µA IR at 104 V, enabling sub-1% gain stability over full operating temperature range. | Use Scenario: Generating calibrated high-voltage bias for piezoelectric transducers in portable ultrasound probe front-ends. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage reference supplying excitation voltage to transducer elements. Use Value: Ensures signal fidelity via 450 Ω dynamic impedance and >16 kV HBM ESD immunity, eliminating need for external protection diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF130A (ON Semiconductor) | Same 130 V nominal, 1.0 W rating, SOD-123 package, 1000 Ω ZZT at 1 mA | Limited to lower-power applications; lacks metallic thermal path and 3.0 W capability | Select when board space is constrained but thermal load <1.0 W and automated assembly compatibility is required |
| BZX84-C130 (Diodes Inc.) | 130 V ±5%, 300 mW, SOT-23, 500 Ω ZZT at 5 mA | Not suitable for >300 mW continuous dissipation; no thermal tab or metallic base | Choose only for low-power signal-level clamping where PCB real estate is extremely limited |
Compared with SMF130A and BZX84-C130, the 1PMT5952A/TR7 uniquely delivers 3.0 W power handling in a surface-mount form factor with verified thermal performance via its metallic bottom and locking tab - essential for industrial and automotive applications requiring sustained high-voltage regulation.
Availability
1PMT5952A/TR7 is available at Aetrix Electronics and suitable for industrial DC power supplies, automotive load-dump protection circuits, telecom line card biasing, and medical sensor excitation systems requiring stable component supply with traceable sourcing and long-lifecycle support.
Supply support for 1PMT5952A/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 to replace through-hole 1N52xx and 1N59xx families in space-constrained, thermally demanding applications - delivering equivalent voltage regulation with superior manufacturability and thermal performance.
FAQ
What is the maximum continuous power dissipation for 1PMT5952A/TR7?
The 1PMT5952A/TR7 is rated for 3.0 W DC power dissipation when TAB 1 temperature is maintained at 60°C. Derating is required above this temperature at 30 mW/°C based on its 30°C/W thermal resistance. Operation beyond this limit risks irreversible junction damage or parametric shift. Always verify PCB copper area and airflow in final layout to sustain 1PMT5952A/TR7 performance.
How does the Powermite® package improve thermal performance compared to standard SOD-123 Zeners?
The 1PMT5952A/TR7 uses a Powermite® package with a full metallic bottom and integral locking tab that provides direct thermal conduction from the silicon junction to the PCB copper pour. This achieves 30°C/W junction-to-TAB1 thermal resistance - roughly 40% better than typical SOD-123 Zeners - enabling reliable 3.0 W operation where conventional packages would thermally saturate.
Is 1PMT5952A/TR7 compatible with lead-free reflow profiles?
Yes, the 1PMT5952A/TR7 is qualified for standard lead-free reflow processes per JEDEC J-STD-020. Its molded package and metallic terminations withstand peak temperatures up to 260°C for 30 seconds. The full metallic bottom also minimizes voiding risk during reflow, improving thermal interface consistency versus plastic-bodied alternatives.
What is the reverse leakage current specification for 1PMT5952A/TR7 at 104 V?
The 1PMT5952A/TR7 has a maximum reverse leakage current (IR) of 1 µA at VR = 104 V and TL = 30°C. This low leakage ensures minimal standby power loss in high-impedance bias networks and maintains regulation accuracy in precision reference applications - especially critical in battery-powered or energy-harvesting systems where quiescent current directly impacts runtime.
Does 1PMT5952A/TR7 have a defined polarity marking, and how is cathode identified?
Yes, the 1PMT5952A/TR7 cathode is unambiguously designated by TAB 1, which is the larger metallic surface on the package bottom. No separate band or dot marking is used - correct orientation requires aligning TAB 1 to the cathode pad on the PCB. Misorientation results in forward conduction and catastrophic failure under applied voltage.
1PMT5952A/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):
- 130 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 450 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 98.8 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
1PMT5952A/TR7 FAQ
1.How can I place an order for 1PMT5952A/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5952A/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 1PMT5952A/TR7 reliable?
The price and inventory of 1PMT5952A/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5952A/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5952A/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5952A/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5952A/TR7?
1PMT5952A/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5952A/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 1PMT5952A/TR7?
For technical support, including 1PMT5952A/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5952A/TR7 requirements.
6.How does Aetrix verify that 1PMT5952A/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5952A/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 1PMT5952A/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5952A/TR7?
All 1PMT5952A/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5952A/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 1PMT5952A/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5952A/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5952A/TR7 Tags
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