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Microchip Technology 1PMT5950E3/TR7
- Part No.:
- 1PMT5950E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5950E3/TR7.pdf
- Description:
- DIODE ZENER 110V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,439
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Product details
Overview
1PMT5950E3/TR7 from Microsemi is a 110 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 30°C/W thermal resistance from junction to TAB 1 and 16 kV HBM ESD rating - used for precision voltage regulation and overvoltage protection in industrial power supplies and automotive ECUs.
For engineers reviewing the 1PMT5950E3/TR7 datasheet, 1PMT5950E3/TR7 pinout, 1PMT5950E3/TR7 application, or 1PMT5950E3/TR7 equivalent, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (300 Ω @ 3.4 mA), knee current (0.25 mA), reverse leakage (≤4000 µA @ 83.6 V), and thermal performance under sustained power dissipation.
Technical Context
This Zener diode operates as a two-terminal voltage reference device, leveraging silicon PN-junction avalanche breakdown at 110 V nominal. Its design targets stable regulation under variable load and temperature, supported by low dynamic impedance (300 Ω) and tight knee characteristics (IZK = 0.25 mA).
The Powermite® package integrates a full metallic bottom and locking tab that serves as both mechanical anchor and thermal path to PCB copper, enabling efficient heat transfer from junction to TAB 1 with verified 30°C/W thermal resistance - critical for maintaining VZ stability during 3.0 W continuous operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 110 V ±5% at IZT = 3.4 mA - defines primary regulation threshold with predictable deviation across temperature and life. |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling before thermal derating applies. |
| Dynamic Impedance | 300 Ω @ IZT - determines output voltage variation under small-signal current changes; lower value improves regulation fidelity. |
| Knee Current | 0.25 mA - minimum current needed to enter stable Zener conduction region; critical for low-power biasing circuits. |
| Thermal Resistance | 30°C/W (junction to TAB 1) - quantifies thermal path efficiency; enables PCB copper area sizing for thermal management. |
| ESD Rating | >16 kV HBM - ensures robustness against human-body-model electrostatic discharge during handling and assembly. |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral locking tab; cathode designated by TAB 1; mounting position unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to PCB copper pour for thermal management and circuit return path. |
| Lead 2 | Anode | Standard anode terminal; reverse-biased configuration places this node at lower potential relative to TAB 1 during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling previously limited to larger through-hole packages. |
| Integral heat sink locking tab | Acts as both mechanical retention feature and low-thermal-resistance path from junction to PCB, reducing thermal stress under sustained load. |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and intermetallic bond integrity. |
| 16 kV HBM ESD rating | Provides inherent protection against common handling-induced electrostatic events without requiring external TVS components. |
Applications
| Industrial Power Supply Regulation | Automotive Engine Control Unit Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for feedback loops in 48 V DC-DC converters supplying PLC I/O modules. IC Role / Device Role / Timing Role: Zener diode providing precise 110 V shunt regulation to clamp error amplifier input and maintain output accuracy. Use Value: Maintains ±5% regulation tolerance across -55°C to +150°C ambient, ensuring consistent converter performance in harsh factory environments. | Use Scenario: Overvoltage clamping on 12 V battery-supplied microcontroller reset lines exposed to load-dump transients. IC Role / Device Role / Timing Role: Shunt protection device absorbing transient energy above 83.6 V (VR max), preventing MCU brownout or latch-up. Use Value: Withstands 3.0 W peak dissipation and 16 kV HBM ESD, eliminating need for additional transient suppressors in compact ECU layouts. |
| Telecom Line Card Voltage Reference | Renewable Energy Inverter Gate Drive Bias |
Use Scenario: Generating stable bias voltage for op-amp comparators monitoring AC line voltage in DSLAM line cards. IC Role / Device Role / Timing Role: Precision Zener reference establishing trip threshold for overvoltage detection circuitry. Use Value: Low 300 Ω dynamic impedance minimizes voltage shift under varying comparator input current, improving detection repeatability. | Use Scenario: Providing isolated gate drive bias for high-side IGBTs in solar inverter half-bridge stages. IC Role / Device Role / Timing Role: Zener clamp protecting gate driver IC inputs from Miller-induced voltage spikes during switching transitions. Use Value: 0.25 mA knee current allows reliable turn-on even under low-leakage gate driver quiescent conditions, ensuring fast response to transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5950B | Same 110 V, ±5% VZ and 3.0 W rating, but in DO-41 through-hole package; no metallic bottom or locking tab; thermal resistance ~65°C/W. | Requires manual or wave soldering; unsuitable for high-density SMT layouts or automated insertion. | Select when legacy through-hole assembly or higher thermal margin via heatsink mounting is preferred. |
| SMBJ110A | TVS diode with 110 V standoff voltage and 600 W peak pulse power; not a regulated Zener - exhibits higher leakage and looser voltage tolerance (±5% min, ±10% typical). | Designed for transient suppression only; cannot replace 1PMT5950E3/TR7 in precision regulation roles. | Select only for surge-only protection; avoid where stable DC regulation or low dynamic impedance is required. |
Compared with 1N5950B and SMBJ110A, the 1PMT5950E3/TR7 uniquely combines SMT compatibility, 30°C/W thermal resistance, and 300 Ω dynamic impedance - making it optimal for space-constrained, thermally demanding Zener regulation tasks where precision and manufacturability are co-priorities.
Availability
1PMT5950E3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, telecom line cards, and renewable energy inverters requiring stable component supply with full traceability and lifecycle support.
Supply support for 1PMT5950E3/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 developed to deliver high-power surface-mount voltage regulation in compact, thermally optimized packages - targeting applications where traditional through-hole Zeners compromise board density or thermal performance.
FAQ
What is the zener voltage tolerance for 1PMT5950E3/TR7?
The 1PMT5950E3/TR7 has a standard zener voltage tolerance of ±5% at 110 V nominal, measured at test current IZT = 3.4 mA and TAB 1 temperature of 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 handled for 1PMT5950E3/TR7 in PCB layout?
Thermal management for 1PMT5950E3/TR7 relies on soldering TAB 1 - the cathode terminal - directly to a PCB copper pour. With a junction-to-TAB thermal resistance of 30°C/W, adequate copper area (≥250 mm² recommended) is required to maintain TAB temperature ≤60°C under 3.0 W dissipation, per the datasheet's derating curve.
Can 1PMT5950E3/TR7 be used in place of a through-hole Zener like 1N5950B?
No - while 1PMT5950E3/TR7 and 1N5950B share identical electrical specs (110 V, ±5%, 3.0 W), they differ fundamentally in package and thermal behavior. The 1PMT5950E3/TR7 uses Powermite® SMT packaging with 30°C/W thermal resistance and metallic bottom; 1N5950B uses DO-41 with ~65°C/W. Direct substitution requires PCB redesign and thermal validation.
What is the maximum reverse voltage (VR) that 1PMT5950E3/TR7 can withstand before breakdown?
The maximum reverse voltage VR for 1PMT5950E3/TR7 is 83.6 V - the voltage below which reverse leakage remains ≤4000 µA. Operation above this voltage enters the Zener breakdown region; the device is designed to regulate stably at its nominal 110 V VZ only when biased above VR and within its power and current limits.
Does 1PMT5950E3/TR7 meet automotive AEC-Q200 requirements?
No - the 1PMT5950E3/TR7 is not AEC-Q200 qualified. While it operates across -55°C to +150°C and offers 16 kV HBM ESD protection, Microsemi's official qualification documentation does not list AEC-Q200 compliance for this part. Automotive designs requiring AEC-Q200 should verify alternate qualified Zener options.
1PMT5950E3/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):
- 110 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 300 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 83.6 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
1PMT5950E3/TR7 FAQ
1.How can I place an order for 1PMT5950E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5950E3/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 1PMT5950E3/TR7 reliable?
The price and inventory of 1PMT5950E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5950E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5950E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5950E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5950E3/TR7?
1PMT5950E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5950E3/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 1PMT5950E3/TR7?
For technical support, including 1PMT5950E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5950E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5950E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5950E3/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 1PMT5950E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5950E3/TR7?
All 1PMT5950E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5950E3/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 1PMT5950E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5950E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5950E3/TR7 Tags
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