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Microchip Technology 1PMT5938AE3/TR7
- Part No.:
- 1PMT5938AE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5938AE3/TR7.pdf
- Description:
- DIODE ZENER 36V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,866
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Product details
Overview
1PMT5938AE3/TR7 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 power supply regulation circuits.
For engineers reviewing the 1PMT5938AE3/TR7 datasheet, 1PMT5938AE3/TR7 pinout, 1PMT5938AE3/TR7 application, or 1PMT5938AE3/TR7 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 silicon planar Zener diode with sharp reverse breakdown at 36 V nominal, characterized by tight voltage regulation under varying load conditions due to low dynamic impedance (38 Ω at 10.4 mA) and controlled knee behavior (IZK = 0.25 mA, ZZK = 850 Ω). Its full metallic bottom and integral heat sink tab enable efficient thermal conduction to the PCB.
The Powermite® package supports high-reliability mounting with no solder flux entrapment risk and is qualified for operation across –55°C to +150°C junction temperature range. Reverse leakage remains below 1 µA up to 27.4 V, ensuring stable clamping performance in low-power protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 36 V ±5% - precise clamping threshold at IZT = 10.4 mA, suitable for 3.3 V–5 V rail monitoring with margin |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust transient suppression without external heatsink in compact layouts |
| Dynamic Impedance | 38 Ω at 10.4 mA - ensures minimal output voltage deviation under load transients |
| Thermal Resistance | 30°C/W junction-to-TAB - allows accurate thermal design when mounted on copper pour or thermal pad |
| ESD Rating | >16 kV HBM - provides intrinsic system-level ESD immunity without added TVS staging |
| Reverse Leakage | <1 µA at 27.4 V - guarantees low quiescent current in always-on voltage reference applications |
| Knee Current | 0.25 mA - enables stable regulation even at ultra-low bias currents in battery-powered sensors |
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 cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; routed to ground or low-impedance return in shunt regulator configuration |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term solder joint reliability and process yield |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| ESD rating >16 kV HBM | Reduces need for discrete ESD protection components in front-end interface stages |
| Low knee impedance (850 Ω) | Ensures predictable turn-on behavior near breakdown, critical for precision reference and sensing |
| Compatible with EIA-481 tape & reel | Supports high-speed pick-and-place placement at 3,000 pcs per 7-inch reel |
Applications
| Power Supply Overvoltage Clamp | Industrial Sensor Reference |
|---|---|
Use Scenario: Protecting 24 V DC input rails in PLC I/O modules against surge-induced overvoltage events. IC Role / Device Role / Timing Role: Shunt-clamping Zener diode placed between rail and ground, conducting only above 36 V threshold. Use Value: Limits transient voltage to safe levels using its 3.0 W dissipation capability and 30°C/W thermal path to PCB. | Use Scenario: Providing stable 36 V reference for analog front-end calibration in industrial pressure transducers. IC Role / Device Role / Timing Role: Precision voltage reference source biased at 10.4 mA with minimal drift over temperature. Use Value: Delivers ±5% initial accuracy and <1 µA leakage, enabling sub-0.1% measurement linearity. |
| Automotive Body Control Module | Battery Management System Monitor |
Use Scenario: Clamping CAN transceiver supply lines against load dump spikes in 12 V automotive systems. IC Role / Device Role / Timing Role: Transient voltage suppressor connected across VCC and GND near IC power pins. Use Value: Withstands >16 kV ESD and maintains regulation stability across –40°C to +125°C ambient. | Use Scenario: Monitoring cell stack voltage in 10S Li-ion battery packs where 36 V represents full charge threshold. IC Role / Device Role / Timing Role: Overvoltage detection element triggering shutdown logic when stack exceeds 36 V. Use Value: Low knee current (0.25 mA) allows reliable activation even with high-impedance divider networks. |
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 package; higher thermal resistance (50°C/W); no metallic bottom | Limited to ≤1.5 W continuous dissipation; less suitable for high-density thermal pads | Select 1PMT5938AE3/TR7 when board space, thermal performance, or automated assembly are critical |
| BZX84-C36 | SOT-23 package; 36 V ±5%; rated 300 mW; dynamic impedance 90 Ω; no ESD rating specified | Only appropriate for low-power signal-level clamping, not power rail protection | Choose 1PMT5938AE3/TR7 for 3.0 W clamping duty or >16 kV ESD immunity requirements |
Compared with 1N5357B and BZX84-C36, the 1PMT5938AE3/TR7 delivers 2× higher power handling, 40% lower thermal resistance, and guaranteed ESD robustness-making it uniquely suited for industrial and automotive power-rail protection where reliability and thermal efficiency are non-negotiable.
Availability
1PMT5938AE3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, battery management systems, and sensor reference circuits requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5938AE3/TR7 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 engineered for high-power density surface-mount voltage regulation in space-constrained, thermally demanding environments-emphasizing thermal integrity, ESD resilience, and automated manufacturability.
FAQ
What is the Zener voltage tolerance for 1PMT5938AE3/TR7?
The 1PMT5938AE3/TR7 has a standard Zener voltage tolerance of ±5% at 36 V nominal, measured at 10.4 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D, but the base part 1PMT5938AE3/TR7 uses the standard ±5% specification per MSC0995 Rev F.
How is thermal performance defined for 1PMT5938AE3/TR7?
The 1PMT5938AE3/TR7 specifies a thermal resistance of 30°C/W from junction to TAB 1. This value assumes full-solder coverage of the metallic bottom to a minimum 100 mm² copper pad. At TAB 1 = 60°C, the device sustains 3.0 W DC dissipation-exceeding typical DO-214/DO-204 devices by >2×.
Is 1PMT5938AE3/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5938AE3/TR7 is qualified for standard lead-free reflow profiles (J-STD-020), including peak temperatures up to 260°C. Its Powermite® package construction-molded epoxy with metallic bottom-ensures mechanical integrity and intermetallic bond stability during multiple thermal cycles.
What does the "E3/TR7" suffix indicate in 1PMT5938AE3/TR7?
The "E3" denotes compliance with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3), requiring dry-packaging and floor-life management. "TR7" specifies tape-and-reel packaging per EIA-481 standard, with 3,000 units per 7-inch reel-optimized for high-volume SMT placement equipment.
Can 1PMT5938AE3/TR7 replace axial-lead Zeners like 1N5226B in new designs?
Yes, the 1PMT5938AE3/TR7 can replace 1N5226B (36 V Zener) in new SMT designs-but not as a drop-in replacement due to different package (Powermite® vs. DO-35) and thermal path. Its superior 3.0 W rating, 30°C/W RθJA, and ESD rating make it a functional upgrade where board area, thermal performance, and reliability are prioritized.
1PMT5938AE3/TR7 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/TR7 FAQ
1.How can I place an order for 1PMT5938AE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5938AE3/TR7 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/TR7 reliable?
The price and inventory of 1PMT5938AE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5938AE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5938AE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5938AE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5938AE3/TR7?
1PMT5938AE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5938AE3/TR7 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/TR7?
For technical support, including 1PMT5938AE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5938AE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5938AE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5938AE3/TR7 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/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5938AE3/TR7?
All 1PMT5938AE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5938AE3/TR7, 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/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5938AE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5938AE3/TR7 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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Diodes Incorporated
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