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Microchip Technology 1PMT5939BE3/TR13
- Part No.:
- 1PMT5939BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5939BE3/TR13.pdf
- Description:
- DIODE ZENER 39V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,357
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Product details
Overview
1PMT5939BE3/TR13 from Microsemi is a 39 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 45 Ω dynamic impedance at 9.6 mA test current and 900 µA max reverse leakage at 1.0 V reverse voltage. It serves as a precision voltage reference or overvoltage clamp in power supply regulation circuits.
For engineers reviewing the 1PMT5939BE3/TR13 datasheet, 1PMT5939BE3/TR13 pinout, 1PMT5939BE3/TR13 application, or 1PMT5939BE3/TR13 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly using EIA-481 tape-and-reel packaging.
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 30°C/W thermal resistance from junction to TAB 1, enabling stable operation up to +150°C junction temperature. Electrical performance is characterized at TL = 30°C with 20-second stabilization after DC current application, per Micro Note 202 for voltage-current deviation analysis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±5% at IZT = 9.6 mA - defines nominal regulation point with production tolerance band |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power handling under defined thermal mounting condition |
| Dynamic Impedance (ZZT) | 45 Ω at IZT = 9.6 mA - indicates small-signal AC resistance affecting regulation stability under varying load |
| Reverse Leakage (IR) | ≤900 µA at VR = 1.0 V - ensures low standby current in clamping or reference applications |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies thermal path efficiency for heatsinking via PCB copper pad |
| ESD Rating | >16 kV per Human Body Model - supports robust handling and board-level ESD immunity without external protection |
| Knee Current (IZK) | 0.25 mA - minimum current required to enter useful regulation region near VZ |
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 dissipation |
| Lead 2 | Anode | Standard anode connection; mounted opposite TAB 1 on DO-216 outline |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables high-density PCB layout while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper area |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and void-free solder joints |
| ESD robustness | >16 kV HBM rating reduces need for external transient suppression in sensitive input stages |
| Automated insertion compatibility | EIA-481 tape-and-reel packaging (7″/3,000 pcs or 13″/12,000 pcs) supports high-speed pick-and-place placement |
Applications
| Industrial Power Supply Regulation | Automotive Body Control Module Clamping |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation loops. IC Role / Device Role / Timing Role: Precision voltage reference and overvoltage clamp protecting optocoupler input circuitry. Use Value: 39 V ±5% regulation with 45 Ω dynamic impedance ensures tight output voltage control under line/load transients. | Use Scenario: Suppressing load-dump transients on 12 V microcontroller I/O lines in BCMs. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping induced spikes to safe levels before reaching MCU pins. Use Value: >16 kV HBM ESD rating and 3.0 W peak pulse capability provide robust protection without additional TVS staging. |
| Telecom Line Card Reference | Medical Instrumentation Bias Supply |
Use Scenario: Providing stable bias voltage for analog front-end amplifiers in DSL line cards. IC Role / Device Role / Timing Role: Low-noise voltage reference source with minimal temperature drift over -40°C to +85°C ambient. Use Value: 30°C/W thermal resistance and 900 µA max reverse leakage at 1.0 V ensure stable reference under variable thermal loading. | Use Scenario: Generating calibrated reference voltage for ADC/DAC bias networks in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision shunt regulator establishing known voltage node for analog signal conditioning paths. Use Value: ±5% initial tolerance and tight knee characteristics enable accurate calibration without post-manufacture trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5939BTR | Same 39 V ±5% rating but in DO-41 through-hole package; higher thermal resistance (~50°C/W) | Requires through-hole assembly and larger PCB footprint; unsuitable for high-density SMT designs | Select when legacy through-hole manufacturing or higher surge current margin is prioritized over size and thermal performance |
| BZX84-C39 | 39 V ±5% in SOT-23; rated for 300 mW only; 10× lower power handling than 1PMT5939BE3/TR13 | Limited to low-power signal-level clamping; cannot replace in 3.0 W power regulation roles | Select only for space-constrained signal-path references where power dissipation remains below 300 mW |
Compared with 1N5939BTR and BZX84-C39, the 1PMT5939BE3/TR13 uniquely delivers 3.0 W surface-mount Zener regulation with 30°C/W thermal resistance and EIA-481 tape-and-reel compatibility-enabling high-power density, automated assembly, and superior thermal management in modern power electronics.
Availability
1PMT5939BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom line cards, and medical instrumentation requiring stable component supply with full traceability and lifecycle support.
Supply support for 1PMT5939BE3/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 semiconductor company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The Powermite® Zener series-including 1PMT5939BE3/TR13-is engineered for high-power surface-mount voltage regulation in space-constrained, thermally demanding environments where traditional through-hole Zeners fall short.
FAQ
What is the zener voltage tolerance for 1PMT5939BE3/TR13?
The 1PMT5939BE3/TR13 has a standard zener voltage tolerance of ±5% at 39 V, measured at IZT = 9.6 mA with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the base part number 1PMT5939BE3/TR13 specifies ±5%.
How is thermal performance specified for 1PMT5939BE3/TR13?
The 1PMT5939BE3/TR13 has a thermal resistance of 30°C/W from junction to TAB 1, meaning each watt dissipated raises the junction temperature 30°C above the TAB temperature. Full 3.0 W rating requires TAB 1 maintained at ≤60°C, typically achieved via adequate PCB copper area connected to TAB 1.
Does 1PMT5939BE3/TR13 support automated SMT assembly?
Yes, the 1PMT5939BE3/TR13 is supplied in EIA-481 compliant tape-and-reel format (7″ reel: 3,000 pieces; 13″ reel: 12,000 pieces) and features a Powermite® package geometry optimized for pick-and-place equipment, including compatibility with standard nozzles and vision alignment systems.
What is the maximum reverse leakage current for 1PMT5939BE3/TR13?
The maximum reverse leakage current for 1PMT5939BE3/TR13 is 900 µA at VR = 1.0 V and TL = 30°C. This value is confirmed in the manufacturer's electrical characteristics table and reflects worst-case leakage under specified test conditions.
Is 1PMT5939BE3/TR13 RoHS compliant?
Yes, 1PMT5939BE3/TR13 meets RoHS Directive 2011/65/EU requirements. Microsemi's Powermite® product family-including this part-is manufactured using lead-free terminations and halogen-free molding compounds, with full compliance documentation available upon request.
1PMT5939BE3/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):
- 39 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 29.7 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
1PMT5939BE3/TR13 FAQ
1.How can I place an order for 1PMT5939BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5939BE3/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 1PMT5939BE3/TR13 reliable?
The price and inventory of 1PMT5939BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5939BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5939BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5939BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5939BE3/TR13?
1PMT5939BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5939BE3/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 1PMT5939BE3/TR13?
For technical support, including 1PMT5939BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5939BE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5939BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5939BE3/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 1PMT5939BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5939BE3/TR13?
All 1PMT5939BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5939BE3/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 1PMT5939BE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5939BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5939BE3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZX84C3V3LT1G
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