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Microchip Technology 1PMT5939AE3/TR13
- Part No.:
- 1PMT5939AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5939AE3/TR13.pdf
- Description:
- DIODE ZENER 39V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,314
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Product details
Overview
1PMT5939AE3/TR13 from Microsemi is a 39 V, ±5% tolerance Zener diode in Powermite® surface-mount 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 - used for precision voltage regulation in industrial power supplies and overvoltage protection circuits.
For engineers reviewing the 1PMT5939AE3/TR13 datasheet, 1PMT5939AE3/TR13 pinout, 1PMT5939AE3/TR13 application, or 1PMT5939AE3/TR13 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 device operates as a voltage-reference and clamping element in DC power rails, leveraging its stable 39 V Zener breakdown with tight ±5% initial tolerance and low dynamic impedance (45 Ω) to maintain regulation under varying load currents. Its full metallic bottom and integral heat-sink locking tab enable efficient thermal transfer to PCB copper, supporting sustained 3.0 W dissipation when mounted on adequate thermal pads.
The 1PMT5939AE3/TR13 exhibits low reverse leakage (≤900 µA at VR = 1.0 V), high ESD robustness (>16 kV HBM), and specified knee behavior (IZK = 0.25 mA, ZZK = 900 Ω), making it suitable for low-power reference and transient suppression where stability at low bias matters.
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-grade accuracy |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling with thermal derating above 60°C |
| Dynamic Impedance (ZZT) | 45 Ω at IZT = 9.6 mA - determines output voltage variation under small-signal AC load changes |
| Reverse Leakage (IR) | ≤900 µA at VR = 1.0 V - ensures minimal standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies temperature rise per watt, guiding PCB copper area design |
| ESD Rating | >16 kV per Human Body Model - supports robustness in handling and board-level ESD events |
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; electrically isolated from TAB 1; used for circuit return path |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| Automated insertion compatibility | Designed for pick-and-place and reflow processes per EIA-481 tape-and-reel standard (TR13 = 13-inch reel) |
| Low knee impedance | 900 Ω at IZK = 0.25 mA - enables stable regulation even near turn-on threshold |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback reference in isolated DC-DC converter secondary-side error amplifiers. IC Role / Device Role / Timing Role: Zener diode providing precise 39 V reference for TL431 or optocoupler bias network. Use Value: ±5% tolerance and low ZZT ensure <±1% output voltage drift across line/load/temperature in cost-sensitive industrial SMPS. | Use Scenario: Clamping surge transients on 24–48 V DC control bus lines in PLC I/O modules. IC Role / Device Role / Timing Role: Shunt protector limiting voltage excursions to ≤39 V during EFT or lightning-induced spikes. Use Value: 3.0 W rating and 30°C/W thermal resistance allow brief 2–3 A surge absorption without thermal runaway. |
| Programmable Logic Controller (PLC) Input Conditioning | Test Equipment Reference Source |
Use Scenario: Level-shifting and voltage limiting for analog input front-end protection in 16-bit ADC signal chains. IC Role / Device Role / Timing Role: Precision clamp establishing upper rail for op-amp input protection and anti-aliasing filter biasing. Use Value: Low IR (<900 µA) avoids loading high-impedance sensor sources; >16 kV HBM withstands field wiring ESD events. | Use Scenario: Stable voltage reference in portable multimeter or calibration source internal divider networks. IC Role / Device Role / Timing Role: Primary Zener reference setting 39 V node for precision resistor ladder scaling. Use Value: Tight ±5% tolerance and low ZZT minimize measurement uncertainty; DO-216 package enables compact, repeatable layout. |
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 39 V nominal, but in DO-204AL (DO-41) through-hole package; 5 W rating; higher ZZT (50 Ω); no metallic bottom or locking tab | Requires through-hole assembly; better suited for prototyping or legacy designs with manual soldering | Select when board-level thermal management is less critical and through-hole mounting is preferred |
| BZX84-C39 | SOT-23 package; 39 V ±5%; 300 mW rating; ZZT ≈ 90 Ω; no integrated heat sink; lower ESD rating (~8 kV HBM) | Limited to low-power bias/reference use; unsuitable for >100 mA clamping or sustained 3 W loads | Select only for space-constrained, low-dissipation applications where thermal performance is secondary |
Compared with 1N5357B and BZX84-C39, the 1PMT5939AE3/TR13 uniquely combines 3.0 W SMT power handling, 30°C/W thermal resistance, and >16 kV ESD robustness - enabling reliable operation in industrial environments where both power density and ruggedness are required.
Availability
1PMT5939AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, PLC I/O modules, test equipment references, and overvoltage protection circuits requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5939AE3/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, thermally robust voltage regulation and clamping in harsh-environment industrial and transportation systems.
FAQ
What is the Zener voltage tolerance for 1PMT5939AE3/TR13?
The 1PMT5939AE3/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, but the E3 suffix indicates the standard ±5% version. This tolerance directly impacts regulation accuracy in feedback loops and reference networks using the 1PMT5939AE3/TR13.
How is thermal performance defined for 1PMT5939AE3/TR13?
The 1PMT5939AE3/TR13 has a junction-to-TAB1 thermal resistance of 30°C/W, meaning each watt dissipated raises the junction temperature 30°C above the TAB 1 temperature. Full 3.0 W rating requires TAB 1 maintained at ≤60°C - achieved via adequate PCB copper area and thermal vias. Exceeding this limit risks parametric shift or failure, so thermal design must account for ambient and adjacent heat sources affecting the 1PMT5939AE3/TR13.
Is 1PMT5939AE3/TR13 compatible with standard SMT reflow processes?
Yes, the 1PMT5939AE3/TR13 is qualified for standard lead-free reflow profiles per J-STD-020, packaged in EIA-481-compliant tape-and-reel (TR13 = 13-inch reel, 12,000 pieces). Its Powermite® package features a full metallic bottom that prevents flux entrapment and ensures consistent solder joint formation - critical for high-yield automated assembly of the 1PMT5939AE3/TR13 in volume production.
What does the "E3" suffix indicate in 1PMT5939AE3/TR13?
The "E3" suffix in 1PMT5939AE3/TR13 denotes the standard ±5% Zener voltage tolerance and RoHS-compliant, lead-free finish. It is not a date code or packaging variant - all E3-suffixed parts in the 1PMT59xxB series share this tolerance and environmental compliance. The TR13 designation separately specifies 13-inch tape-and-reel packaging, confirming the 1PMT5939AE3/TR13 is supplied in industry-standard format for SMT placement.
Can 1PMT5939AE3/TR13 be used for bidirectional transient suppression?
No - the 1PMT5939AE3/TR13 is a unidirectional Zener diode optimized for forward conduction (anode-to-cathode) and reverse breakdown (cathode-to-anode) only. It lacks symmetrical avalanche characteristics and is not rated for bidirectional ESD or surge clamping. For bidirectional protection, discrete TVS arrays or dedicated bidirectional TVS diodes should be used instead of relying on the 1PMT5939AE3/TR13 alone.
1PMT5939AE3/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:
- ±10%
- 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
1PMT5939AE3/TR13 FAQ
1.How can I place an order for 1PMT5939AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5939AE3/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 1PMT5939AE3/TR13 reliable?
The price and inventory of 1PMT5939AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5939AE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5939AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5939AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5939AE3/TR13?
1PMT5939AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5939AE3/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 1PMT5939AE3/TR13?
For technical support, including 1PMT5939AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5939AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5939AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5939AE3/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 1PMT5939AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5939AE3/TR13?
All 1PMT5939AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5939AE3/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 1PMT5939AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5939AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5939AE3/TR13 Tags
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MMBZ5240B-7-F
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