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Microchip Technology 1PMT5939CE3/TR13
- Part No.:
- 1PMT5939CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5939CE3/TR13.pdf
- Description:
- DIODE ZENER 39V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,846
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Product details
Overview
1PMT5939CE3/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 32.7 V. It serves as a precision voltage reference or overvoltage clamp in DC power supply regulation circuits.
For engineers reviewing the 1PMT5939CE3/TR13 datasheet, 1PMT5939CE3/TR13 pinout, 1PMT5939CE3/TR13 application, or 1PMT5939CE3/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.
Technical Context
This device operates as a two-terminal voltage-regulating diode with cathode designated by TAB 1. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and eliminate solder flux entrapment during reflow.
Designed for stable operation across -55°C to +150°C junction temperature range, it delivers 39 V nominal zener voltage at 9.6 mA test current (IZT), with 29.7 mA maximum zener current (IZM) derived from its 3.0 W power rating and voltage drop characteristics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±5% at IZT = 9.6 mA - defines stable regulation point under nominal bias |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous thermal load in PCB-mounted condition |
| Dynamic Impedance (ZZT) | 45 Ω at IZT = 9.6 mA - indicates small-signal AC resistance affecting regulation stability |
| Reverse Leakage (IR) | ≤900 µA at VR = 32.7 V - quantifies off-state conduction impacting standby power loss |
| Thermal Resistance | 30°C/W junction-to-TAB1 - determines temperature rise per watt, critical for thermal design margin |
| ESD Rating | >16 kV per Human Body Model - ensures robustness against handling-induced electrostatic discharge |
| Knee Impedance (ZZK) | 0.25 Ω at IZK = 1 mA - reflects low-voltage turn-on behavior near regulation threshold |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; weight ≈ 0.016 g; compliant with EIA-481 tape-and-reel standard (13-inch reel: 12,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical cathode connection; must be thermally anchored to PCB copper for rated power handling |
| Lead 2 | Anode | Standard anode terminal; polarity confirmed by cathode marking on TAB 1 |
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 retention and direct thermal path from junction to PCB, 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 allows safe handling and integration into ESD-sensitive systems without additional protection |
Applications
| DC Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in low-power linear regulators or feedback networks of switching supplies. IC Role / Device Role / Timing Role: Voltage reference element providing precise 39 V reference point for error amplifiers or shunt regulators. Use Value: Tight ±5% tolerance and low 45 Ω dynamic impedance ensure minimal output deviation under load transients. | Use Scenario: Protecting downstream circuitry from transient overvoltage events on 36–42 V bus lines. IC Role / Device Role / Timing Role: Shunt clamping device that conducts above 39 V to divert excess energy to ground. Use Value: 3.0 W power rating and 29.7 mA IZM enable sustained clamping without thermal runaway under defined surge conditions. |
| Industrial Sensor Excitation | Programmable Reference Source |
Use Scenario: Providing stable excitation voltage for resistive bridge sensors in harsh-temperature industrial environments. IC Role / Device Role / Timing Role: Precision voltage source maintaining constant bias across sensor elements despite ambient fluctuations. Use Value: Operation from -55°C to +150°C and low 900 µA IR at 32.7 V minimize drift and leakage-induced measurement error. | Use Scenario: Serving as adjustable reference in programmable power supplies or calibration equipment requiring traceable voltage standards. IC Role / Device Role / Timing Role: Primary Zener reference node where accuracy and repeatability are critical for system-level calibration. Use Value: ±5% tolerance and 0.25 Ω knee impedance support predictable turn-on behavior and repeatable setpoint definition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B | Same 39 V nominal rating but DO-41 package; 5 W rating; higher thermal resistance (~65°C/W); no metallic bottom or locking tab | Requires through-hole mounting and larger board area; less suitable for high-density SMT designs | Select when higher power headroom is needed and through-hole assembly is acceptable |
| BZX84-C39 | SOT-23 package; 300 mW rating; ±5% tolerance; 90 Ω Zzt; 100 nA IR at 31.2 V | Limited to low-power signal-level referencing; unsuitable for 3 W clamping or regulation | Select only for space-constrained, low-current bias/reference use cases |
Compared with 1N5359B and BZX84-C39, the 1PMT5939CE3/TR13 uniquely combines 3.0 W SMT power handling, 30°C/W thermal resistance, and flux-free metallic packaging-making it optimal for compact, thermally demanding, automated production environments.
Availability
1PMT5939CE3/TR13 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection clamp, and industrial sensor excitation requiring stable component supply and consistent parametric performance across production batches.
Supply support for 1PMT5939CE3/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, industrial, and communications markets.
The Powermite® Zener diode product line was engineered to deliver high-power surface-mount voltage regulation in ruggedized packages optimized for automated manufacturing and extended temperature operation.
FAQ
What is the zener voltage tolerance for 1PMT5939CE3/TR13?
The 1PMT5939CE3/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 CE3 designation confirms the ±5% version. This tolerance directly impacts regulation accuracy in feedback loops and reference circuits using the 1PMT5939CE3/TR13.
How is thermal management handled for 1PMT5939CE3/TR13 in PCB layout?
The 1PMT5939CE3/TR13 relies on TAB 1 as its primary thermal path, with a specified junction-to-TAB thermal resistance of 30°C/W. Effective thermal management requires direct copper connection of TAB 1 to a thermal pad or plane, sized per Microsemi's recommended mounting pad dimensions. Without adequate copper area, the 3.0 W power rating cannot be sustained, risking thermal runaway. The 1PMT5939CE3/TR13's metallic bottom and locking tab are designed specifically to maximize this conduction path.
Is 1PMT5939CE3/TR13 compatible with lead-free reflow processes?
Yes, the 1PMT5939CE3/TR13 is qualified for standard lead-free reflow profiles, including peak temperatures up to 260°C. Its Powermite® package construction-molded body with full metallic bottom-ensures mechanical and thermal integrity during JEDEC J-STD-020-compliant reflow cycles. The device's -55°C to +150°C operating range further supports reliability post-reflow. Always verify profile compliance using the 1PMT5939CE3/TR13's specific thermal limits and PCB thermal mass.
What does the "E3/TR13" suffix indicate in 1PMT5939CE3/TR13?
The "E3" denotes tape-and-reel packaging per EIA-481 standard, and "TR13" specifies a 13-inch reel containing 12,000 units. This packaging format ensures compatibility with high-speed pick-and-place equipment and supports automated SMT assembly. The 1PMT5939CE3/TR13's reel configuration eliminates manual handling, reduces contamination risk, and maintains parametric consistency across production runs of the 1PMT5939CE3/TR13.
Can 1PMT5939CE3/TR13 be used in automotive under-hood applications?
The 1PMT5939CE3/TR13 supports junction temperatures from -55°C to +150°C and features >16 kV HBM ESD rating, making it suitable for many automotive under-hood environments. However, qualification for AEC-Q101 or specific automotive stress tests is not stated in the MSC0995 datasheet. For safety-critical or ASIL-rated systems, additional validation of the 1PMT5939CE3/TR13 against automotive environmental and lifetime requirements is required before deployment.
1PMT5939CE3/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:
- ±2%
- 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
1PMT5939CE3/TR13 FAQ
1.How can I place an order for 1PMT5939CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5939CE3/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 1PMT5939CE3/TR13 reliable?
The price and inventory of 1PMT5939CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5939CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5939CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5939CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5939CE3/TR13?
1PMT5939CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5939CE3/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 1PMT5939CE3/TR13?
For technical support, including 1PMT5939CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5939CE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5939CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5939CE3/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 1PMT5939CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5939CE3/TR13?
All 1PMT5939CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5939CE3/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 1PMT5939CE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5939CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5939CE3/TR13 Tags
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