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Microchip Technology 1PMT5938E3/TR13
- Part No.:
- 1PMT5938E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5938E3/TR13.pdf
- Description:
- DIODE ZENER 36V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,404
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Product details
Overview
1PMT5938E3/TR13 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 DC power rails and regulator feedback paths.
For engineers reviewing the 1PMT5938E3/TR13 datasheet, 1PMT5938E3/TR13 pinout, 1PMT5938E3/TR13 application, or 1PMT5938E3/TR13 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB1), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly per EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified 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), 30°C/W thermal resistance from junction to TAB 1, and a 16 kV human-body-model ESD rating - enabling robust performance in industrial power supply and protection circuits where thermal stability and electrostatic immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% at IZT = 10.4 mA, TL = 30°C - defines stable regulation point for feedback or clamping |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without derating in compact layouts |
| Dynamic Impedance (ZZT) | 38 Ω at IZT - ensures minimal output voltage variation under load current changes |
| Knee Impedance (ZZK) | 0.25 Ω at IZK = 0.25 mA - supports stable regulation even near minimum operating current |
| Thermal Resistance | 30°C/W junction-to-TAB1 - allows direct thermal coupling to PCB copper for effective heat sinking |
| ESD Rating | >16 kV per Human Body Model - provides intrinsic robustness against handling and system-level ESD events |
| Reverse Leakage | <1 µA at VR = 27.4 V - guarantees low standby power loss in voltage-reference applications |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package 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-sinking terminal and electrical cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode connection; mounted opposite TAB 1 on DO-216AA outline |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in footprint comparable to smaller diodes |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal path from junction to PCB, reducing thermal resistance to 30°C/W |
| Full metallic bottom | Eliminates solder flux entrapment during assembly, improving long-term reliability and solder joint integrity |
| ESD hardness >16 kV HBM | Reduces need for external ESD protection in input-stage clamping and interface circuits |
| Tight zener tolerance options | ±5% standard; ±2% (suffix C) and ±1% (suffix D) available for precision reference designs |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback or buck converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener reference element setting precise output voltage threshold via optocoupler feedback network. Use Value: 36 V ±5% regulation with 38 Ω dynamic impedance ensures <±0.4 V output deviation across line/load transients. | Use Scenario: Clamping surge-induced voltage spikes on 24 V industrial control I/O lines. IC Role / Device Role / Timing Role: Shunt protector diverting excess energy to ground before downstream logic ICs exceed absolute maximum ratings. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained clamping of 100–200 ms transients without thermal runaway. |
| Programmable Logic Controller Input Stage | Automotive Body Control Module Reference |
Use Scenario: Providing stable bias voltage for analog input conditioning circuitry in PLC analog modules. IC Role / Device Role / Timing Role: Precision voltage reference for ADC driver amplifiers and sensor signal scaling networks. Use Value: <1 µA reverse leakage at 27.4 V minimizes error contribution in high-impedance reference nodes. | Use Scenario: Generating regulated 36 V reference for CAN transceiver bias or LIN bus pull-up in BCM submodules. IC Role / Device Role / Timing Role: Stable voltage source for communication interface IC biasing under wide ambient temperature (-40°C to +125°C). Use Value: -55°C to +150°C junction/storage temperature range ensures operation across automotive under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | Same 36 V nominal, but DO-204AL (DO-41) through-hole package; 5 W rating; higher ZZT (50 Ω) | Requires through-hole assembly; better suited for prototyping or high-power bench supplies | Select when board space permits through-hole mounting and higher power margin is needed |
| BZX84-C36 | SOT-23 package; 36 V ±5%; 300 mW rating; 90 Ω ZZT; no metallic thermal tab | Limited to low-power signal-level clamping; unsuitable for 3 W continuous dissipation | Select only for space-constrained signal-path references where power is <100 mW |
Compared with 1N5357B and BZX84-C36, the 1PMT5938E3/TR13 uniquely delivers 3.0 W surface-mount power handling with integrated thermal tab and 30°C/W junction-to-pad resistance - making it the only option among the three viable for production-grade SMT power rail regulation and industrial surge clamping.
Availability
1PMT5938E3/TR13 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and programmable logic controller input stages requiring stable component supply and consistent thermal performance.
Supply support for 1PMT5938E3/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 product line was designed for high-power-density surface-mount voltage regulation and transient suppression in harsh-environment power systems where thermal management and assembly reliability are critical.
FAQ
What is the zener voltage tolerance for 1PMT5938E3/TR13?
The 1PMT5938E3/TR13 has a standard zener voltage tolerance of ±5% at 36 V, measured at IZT = 10.4 mA and TAB temperature = 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available as custom order options, but the E3 suffix denotes the standard ±5% version shipped in TR13 tape-and-reel packaging.
How is thermal management implemented in the 1PMT5938E3/TR13 package?
The 1PMT5938E3/TR13 uses the Powermite® package with a full metallic bottom and integral locking tab that functions as both mechanical anchor and primary thermal path. Its specified 30°C/W junction-to-TAB1 thermal resistance requires direct soldering of TAB 1 to a dedicated PCB thermal pad to achieve the full 3.0 W power rating - airflow or additional heatsinking is not required under typical board-level conditions.
Is the 1PMT5938E3/TR13 compatible with lead-free reflow processes?
Yes, the 1PMT5938E3/TR13 is qualified for standard lead-free reflow profiles including JEDEC J-STD-020. Its molded Powermite® package and metallization withstand peak temperatures up to 260°C for 30 seconds. The full metallic bottom also promotes uniform heating and reduces thermal stress during soldering, minimizing risk of delamination or voiding.
What does the "TR13" suffix indicate in 1PMT5938E3/TR13?
The "TR13" suffix in 1PMT5938E3/TR13 specifies EIA-481-compliant tape-and-reel packaging on a 13-inch reel containing 12,000 units. This format is optimized for high-volume SMT placement equipment and ensures consistent orientation (cathode TAB 1 leading) and tension-controlled feeding - critical for automated assembly yield and process repeatability.
Can the 1PMT5938E3/TR13 be used in automotive under-hood applications?
Yes, the 1PMT5938E3/TR13 supports junction temperatures from -55°C to +150°C and is rated for storage across the same range. Its >16 kV HBM ESD rating, robust flux-free metallic bottom, and stable zener characteristics over temperature make it suitable for body control modules, engine control interface protection, and other under-hood subsystems where thermal cycling and electrical noise are present - provided TAB 1 is thermally anchored per design guidelines.
1PMT5938E3/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):
- 36 V
- Tolerance:
- ±20%
- 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
1PMT5938E3/TR13 FAQ
1.How can I place an order for 1PMT5938E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5938E3/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 1PMT5938E3/TR13 reliable?
The price and inventory of 1PMT5938E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5938E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5938E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5938E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5938E3/TR13?
1PMT5938E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5938E3/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 1PMT5938E3/TR13?
For technical support, including 1PMT5938E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5938E3/TR13 requirements.
6.How does Aetrix verify that 1PMT5938E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5938E3/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 1PMT5938E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5938E3/TR13?
All 1PMT5938E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5938E3/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 1PMT5938E3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5938E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5938E3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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