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Microchip Technology 1PMT5938AE3/TR13
- Part No.:
- 1PMT5938AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5938AE3/TR13.pdf
- Description:
- DIODE ZENER 36V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,129
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Product details
Overview
1PMT5938AE3/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 max reverse leakage at 27.4 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5938AE3/TR13 datasheet, 1PMT5938AE3/TR13 pinout, 1PMT5938AE3/TR13 application, or 1PMT5938AE3/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 (0.25 Ω at IZK), and compatibility with EIA-481 tape-and-reel automated assembly.
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), stable dynamic impedance (38 Ω at IZT = 10.4 mA), and a defined knee region (IZK = 0.25 mA, ZZK = 850 Ω), enabling reliable clamping and reference performance in temperature-varying environments (-55°C to +150°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±5% - precise regulation point at 10.4 mA, suitable for 3.3 V–5 V rail supervision with margin |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without external heatsink |
| Dynamic Impedance (ZZT) | 38 Ω at IZT - ensures minimal voltage shift under load current variation in feedback loops |
| Knee Impedance (ZZK) | 850 Ω at IZK = 0.25 mA - defines low-current regulation onset for standby-mode voltage references |
| Thermal Resistance | 30°C/W junction-to-TAB - supports direct thermal coupling to PCB copper pour for sustained 3 W operation |
| ESD Rating | >16 kV HBM - provides robust handling in automated SMT lines and end-equipment surge immunity |
| Reverse Leakage | ≤1 µA at VR = 27.4 V - guarantees negligible quiescent current draw in battery-backed circuits |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount case 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 path and electrical connection point; must be soldered to thermal pad for rated 3.0 W dissipation |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1 on DO-216 outline; no thermal function |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, preventing post-assembly corrosion or voiding |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB |
| EIA-481 tape-and-reel packaging | Enables seamless integration into high-speed pick-and-place systems (7″ reel: 3,000 pcs) |
| 16 kV HBM ESD rating | Reduces risk of field failure in unshielded industrial interfaces and handling environments |
| ±5% VZ tolerance (standard) | Meets cost-sensitive industrial reference requirements without requiring tighter-tolerance variants |
Applications
| Industrial Power Supply Monitoring | Automated Test Equipment (ATE) Clamping |
|---|---|
Use Scenario: Real-time detection of 36 V rail overvoltage in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener clamping element protecting downstream ADC input and supervisor IC from transient excursions. Use Value: 3.0 W power rating absorbs 100 ms surges up to 36 V × 83 mA without degradation, preserving system uptime. | Use Scenario: Input protection for precision DAC output stages in semiconductor wafer probers. IC Role / Device Role / Timing Role: Fast-response voltage clamp limiting DAC output swing to prevent op-amp saturation and latch-up. Use Value: 38 Ω dynamic impedance ensures ≤0.4 V deviation at ±10 mA load transients, maintaining measurement fidelity. |
| Telecom Line Card Reference | Motor Drive Gate Bias Stabilization |
Use Scenario: Stable 36 V reference for isolated DC-DC converter feedback in optical line terminal (OLT) cards. IC Role / Device Role / Timing Role: Precision voltage reference for optocoupler-coupled error amplifier loop compensation. Use Value: ±5% tolerance and 30°C/W thermal resistance enable <±2% total error across -40°C to +85°C operating range. | Use Scenario: Clamp for isolated gate driver bias supply in 400 V IGBT inverters used in HVAC compressors. IC Role / Device Role / Timing Role: Overvoltage protector for bootstrap capacitor charging circuitry in high-side gate drivers. Use Value: Metallic TAB 1 provides direct thermal path to heatsink, sustaining repeated 36 V clamping events at 10 kHz switching frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5938A | Same 36 V nominal, but in DO-41 through-hole package; 1.0 W rating; no metallic thermal tab | Requires PCB footprint redesign and lacks thermal performance for sustained 3 W operation | Select only if legacy through-hole assembly or lower-power derating is acceptable |
| BZX84-C36 | 36 V ±5%, SOT-23 package; 300 mW rating; 60 Ω ZZT; no metallic thermal interface | Not suitable for >300 mW clamping; limited thermal mass increases risk of thermal runaway | Use only in low-energy signal-level protection where board space is critical and power <100 mW |
Compared with 1PMT5938AE3/TR13, the 1N5938A requires layout change and sacrifices 67% power capability, while BZX84-C36 offers compact size but cannot sustain the 3.0 W dissipation needed for industrial power rail clamping-making 1PMT5938AE3/TR13 the sole choice for thermally demanding SMT Zener applications.
Availability
1PMT5938AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automated test equipment, telecom line cards, and motor drive gate bias circuits requiring stable component supply and long-term obsolescence management.
Supply support for 1PMT5938AE3/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 series-including 1PMT5938AE3/TR13-is engineered for surface-mount power regulation and transient suppression in harsh-environment electronics where thermal performance and assembly reliability are critical.
FAQ
What is the maximum power dissipation of the 1PMT5938AE3/TR13 and under what conditions?
The 1PMT5938AE3/TR13 is rated for 3.0 W DC power dissipation when the TAB 1 temperature is maintained at 60°C. This rating assumes proper thermal design-direct soldering of TAB 1 to a minimum 100 mm² copper pour-and ambient conditions per Microsemi's MSC0995 specification. Exceeding this thermal limit reduces safe operating current and risks parametric drift or failure.
How is the cathode identified on the 1PMT5938AE3/TR13 package?
The cathode of the 1PMT5938AE3/TR13 is designated by TAB 1-the large metallic thermal pad on the bottom of the Powermite® (DO-216AA) package. This is confirmed in the mechanical specifications section of the MSC0995 datasheet and must be connected to the circuit's negative or ground reference for correct Zener operation.
Does the 1PMT5938AE3/TR13 meet any industry-standard ESD ratings?
Yes, the 1PMT5938AE3/TR13 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as stated in the FEATURES section of the MSC0995 datasheet. This rating reflects robustness during automated handling and assembly, and supports use in environments with moderate electrostatic exposure without additional protection circuitry.
What is the reverse leakage current specification for the 1PMT5938AE3/TR13?
The 1PMT5938AE3/TR13 specifies a maximum reverse leakage current (IR) of 1 µA at a reverse voltage (VR) of 27.4 V, measured at TL = 30°C. This value is verified per the Electrical Characteristics table in MSC0995 and ensures minimal standby current draw in voltage-reference and monitoring applications.
Is the 1PMT5938AE3/TR13 supplied in tape-and-reel format, and what are the reel sizes?
Yes, the 1PMT5938AE3/TR13 is supplied in EIA-481 standard tape-and-reel format. Standard reels are 7-inch diameter containing 3,000 units, and 13-inch diameter reels contain 12,000 units-both fully compatible with high-speed SMT placement equipment as noted in the PACKAGING section of MSC0995.
1PMT5938AE3/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:
- ±10%
- 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
1PMT5938AE3/TR13 FAQ
1.How can I place an order for 1PMT5938AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5938AE3/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 1PMT5938AE3/TR13 reliable?
The price and inventory of 1PMT5938AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5938AE3/TR13 is usually 5 days.
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1PMT5938AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5938AE3/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 1PMT5938AE3/TR13?
For technical support, including 1PMT5938AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5938AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5938AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5938AE3/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 1PMT5938AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5938AE3/TR13?
All 1PMT5938AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5938AE3/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 1PMT5938AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5938AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5938AE3/TR13 Tags
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Diodes Incorporated
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