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Microchip Technology 1PMT5938CE3/TR7
- Part No.:
- 1PMT5938CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5938CE3/TR7.pdf
- Description:
- DIODE ZENER 36V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,912
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Product details
Overview
1PMT5938CE3/TR7 from Microsemi is a 36 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 10.4 mA test current (IZT), 38 Ω dynamic impedance (ZZT), and <1 µA reverse leakage at 27.4 V. It serves as a precision voltage reference or overvoltage clamp in power supply regulation circuits.
For engineers reviewing the 1PMT5938CE3/TR7 datasheet, 1PMT5938CE3/TR7 pinout, 1PMT5938CE3/TR7 application, or 1PMT5938CE3/TR7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and eliminate solder flux entrapment during reflow.
The device exhibits low reverse leakage (<1 µA at VR = 27.4 V), a sharp knee characteristic (IZK = 0.25 mA, ZZK = 850 Ω), and stable performance over -55°C to +150°C junction temperature range - enabling reliable use in industrial and automotive power rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% at IZT = 10.4 mA - defines nominal clamping/reference level under standard test conditions |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - maximum continuous power handling with defined thermal mounting condition |
| Dynamic Impedance (ZZT) | 38 Ω at IZT - indicates voltage regulation stiffness near operating point |
| Knee Impedance (ZZK) | 850 Ω at IZK = 0.25 mA - characterizes onset of breakdown region; critical for low-current regulation |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies thermal path efficiency to PCB copper pad or heatsink |
| ESD Rating | >16 kV per Human Body Model - ensures robustness against common electrostatic discharge events in handling and assembly |
| Reverse Leakage (IR) | <1 µA at VR = 27.4 V - confirms minimal off-state current in clamping applications |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1; weight ≈ 0.016 g; compliant with EIA-481 tape-and-reel packaging (7″ reel, 3,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be soldered to copper pour for thermal and electrical performance |
| Lead 2 | Anode | Standard anode connection; reverse-biased operation requires this terminal to be at lower potential than TAB 1 |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling typically found in larger through-hole packages |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal path from junction to PCB copper, reducing thermal resistance to 30°C/W |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and solder joint integrity |
| ESD robustness | >16 kV HBM rating supports handling in non-ESD-controlled environments without additional protection circuitry |
| Automated insertion compatibility | Designed for pick-and-place and reflow processes per EIA-481 tape-and-reel standards |
Applications
| Power Supply Overvoltage Clamp | Industrial Sensor Reference |
|---|---|
Use Scenario: Protects downstream DC-DC converter inputs from transient overvoltage events exceeding 36 V. IC Role / Device Role / Timing Role: Zener clamping element placed between rail and ground, conducting only above 36 V. Use Value: Limits peak voltage to 36 V ±5%, leveraging 3.0 W power rating to absorb short-duration surges without failure. | Use Scenario: Provides stable 36 V reference for analog front-end conditioning of 4–20 mA current-loop sensors. IC Role / Device Role / Timing Role: Precision shunt reference supplying bias to op-amp input stages. Use Value: Delivers <1 µA reverse leakage and 38 Ω dynamic impedance, minimizing reference drift and load-induced error. |
| Automotive Battery Monitoring | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Monitors 24 V battery systems where voltage may spike to 36 V during load dump. IC Role / Device Role / Timing Role: Clamping diode on microcontroller ADC input line. Use Value: Withstands -55°C to +150°C junction temperature range and >16 kV HBM, meeting AEC-Q101 stress requirements for under-hood use. | Use Scenario: Shields digital input circuitry in industrial PLC modules from field-wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage suppression device on 24 V digital input channel. Use Value: 3.0 W rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway when mounted on 1 oz copper. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ36A | TVS diode (unidirectional), 36 V standoff, 52.3 V clamping voltage, 1500 W peak pulse power | Designed for transient surge suppression (IEC 61000-4-5), not precision DC regulation | Select when protecting against lightning or EFT events; not suitable as voltage reference |
| BZX84-C36 | SOT-23 package, 36 V ±5%, 300 mW power rating, 100 Ω dynamic impedance, no integral heatsink tab | Limited to low-power signal-level clamping due to thermal constraints | Select for space-constrained logic-level protection where 3.0 W capability is unnecessary |
Compared with SMCJ36A and BZX84-C36, the 1PMT5938CE3/TR7 uniquely combines 3.0 W DC power handling, 30°C/W thermal resistance, and precision Zener regulation in a surface-mount package - making it optimal for industrial power rail stabilization where both accuracy and thermal endurance are required.
Availability
1PMT5938CE3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive battery monitoring systems, and programmable logic controller (PLC) input protection requiring stable component supply and long-term manufacturability.
Supply support for 1PMT5938CE3/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, mixed-signal, and RF solutions for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode product line was designed for high-power surface-mount voltage regulation and transient clamping in harsh-environment applications where thermal performance and assembly reliability are critical.
FAQ
What is the Zener voltage tolerance for 1PMT5938CE3/TR7?
The 1PMT5938CE3/TR7 has a nominal Zener voltage of 36 V with a standard tolerance of ±5%, as confirmed in the MSC0995 datasheet. This tolerance applies at IZT = 10.4 mA and TAB temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D, but the CE3 designation specifies the ±5% version.
How is thermal management handled in the 1PMT5938CE3/TR7 package?
The 1PMT5938CE3/TR7 uses the Powermite® package with an integral metallic locking tab (TAB 1) acting as both cathode and primary thermal path. Its junction-to-TAB thermal resistance is 30°C/W, meaning effective heat transfer requires soldering TAB 1 to a sufficient copper area. The full metallic bottom prevents flux entrapment and enhances thermal contact during reflow.
Can 1PMT5938CE3/TR7 be used in automotive applications?
Yes, the 1PMT5938CE3/TR7 is suitable for automotive applications such as battery voltage monitoring and load-dump protection. Its -55°C to +150°C junction temperature range, >16 kV HBM ESD rating, and robust Powermite® construction meet key requirements for under-hood and body-control module use, though system-level AEC-Q101 qualification must be verified per application.
What does the "TR7" suffix indicate in 1PMT5938CE3/TR7?
The "TR7" suffix denotes tape-and-reel packaging per EIA-481 standard on a 7-inch reel containing 3,000 units. This format is optimized for automated SMT placement equipment. The "CE3" portion indicates ±5% Zener voltage tolerance and compliance with Microsemi's standard screening and testing protocols.
How does the dynamic impedance of 1PMT5938CE3/TR7 affect voltage regulation performance?
The 1PMT5938CE3/TR7 has a dynamic impedance (ZZT) of 38 Ω at IZT = 10.4 mA, meaning its output voltage varies by ~38 mV per 1 mA change in current near the test point. This low value ensures stable regulation under moderate load variations - critical for precision reference and clamping applications where minimal voltage deviation is required.
1PMT5938CE3/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):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 38 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 27.4 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
1PMT5938CE3/TR7 FAQ
1.How can I place an order for 1PMT5938CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5938CE3/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 1PMT5938CE3/TR7 reliable?
The price and inventory of 1PMT5938CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5938CE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5938CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5938CE3/TR7 transactions.
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4.How is shipping managed for 1PMT5938CE3/TR7?
1PMT5938CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5938CE3/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 1PMT5938CE3/TR7?
For technical support, including 1PMT5938CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5938CE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5938CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5938CE3/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 1PMT5938CE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5938CE3/TR7?
All 1PMT5938CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5938CE3/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 1PMT5938CE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5938CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5938CE3/TR7 Tags
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MMBZ5240B-7-F
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