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Microchip Technology 1PMT5931CE3/TR7
- Part No.:
- 1PMT5931CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5931CE3/TR7.pdf
- Description:
- DIODE ZENER 18V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,838
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Product details
Overview
1PMT5931CE3/TR7 from Microsemi is a 18 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 12 mA test current (IZT), 650 Ω dynamic impedance (ZZT), and 1 µA max reverse leakage at 13.7 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5931CE3/TR7 datasheet, 1PMT5931CE3/TR7 pinout, 1PMT5931CE3/TR7 application, or 1PMT5931CE3/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 using EIA-481 tape-and-reel packaging.
Technical Context
This device operates as a two-terminal voltage-regulating element 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.
Electrical behavior is defined at TL = 30°C with VZ measured 20 seconds after applying DC current; dynamic impedance is derived using 60 Hz RMS AC current equal to 10% of IZT. Thermal resistance is 30°C/W from junction to TAB 1, enabling stable regulation under sustained 3.0 W dissipation when mounted on thermally adequate PCB copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18 V ±5% - precise clamping threshold for 15–20 V rail protection |
| Test Current (IZT) | 12 mA - standardized bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZT) | 650 Ω - low AC impedance ensures minimal voltage deviation under small-signal ripple |
| Max Reverse Leakage (IR) | 1 µA at VR = 13.7 V - guarantees low standby power loss in high-impedance sensing paths |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation without external heatsink in compact layouts |
| Thermal Resistance | 30°C/W junction-to-TAB - supports predictable thermal design with direct PCB copper thermal pad contact |
| ESD Rating | >16 kV HBM - provides intrinsic handling robustness without additional protection circuitry |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral heat-sink locking tab; cathode identified by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal path and electrical cathode connection; must be soldered to copper pour for thermal management |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; used for series connection in voltage reference networks |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in footprint smaller than DO-41 |
| Full metallic bottom | Eliminates solder flux entrapment risk and improves thermal transfer to PCB ground plane |
| Integral heat-sink locking tab | Acts as mechanical anchor and thermal conduit-reduces junction temperature rise by ~30°C vs. standard SOD-123 at 3 W |
| ESD robustness | >16 kV Human Body Model rating reduces need for external ESD protection in board-level designs |
| Tight voltage tolerance option | ±5% standard ('E' suffix); ±2% ('C') and ±1% ('D') available for high-accuracy reference applications |
Applications
| Industrial Power Supply Monitoring | Automotive Body Control Module (BCM) Clamping |
|---|---|
Use Scenario: Monitoring 12 V battery-derived 18 V auxiliary rail in PLC I/O modules. IC Role / Device Role / Timing Role: Zener clamping diode providing overvoltage protection and stable reference for ADC input scaling. Use Value: Maintains 18 V regulation within ±5% across -55°C to +150°C ambient, with 1 µA leakage preserving low-power sleep mode integrity. | Use Scenario: Protecting microcontroller GPIOs and CAN transceiver bias rails against load-dump transients. IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing transient energy before it reaches sensitive IC inputs. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway during 100 ms load-dump events. |
| Medical Infusion Pump Reference | Telecom Remote Radio Unit (RRU) Biasing |
Use Scenario: Generating stable 18 V reference for motor driver feedback circuitry in Class II medical devices. IC Role / Device Role / Timing Role: Precision voltage reference source with low knee impedance ensuring minimal drift under varying load conditions. Use Value: 650 Ω dynamic impedance and 12 mA IZT enable stable output even with ±10% supply variation and 10 kHz ripple content. | Use Scenario: Biasing GaN FET gate drivers in outdoor 5G RRU power stages operating at elevated ambient temperatures. IC Role / Device Role / Timing Role: Temperature-stable voltage clamp maintaining gate drive integrity during thermal cycling. Use Value: Junction-to-TAB thermal resistance of 30°C/W allows reliable operation up to +150°C junction temperature with standard FR4 PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF18A (ON Semiconductor) | 18 V, 1.0 W, SOD-123 package, 300 Ω ZZT, 100 µA IR @ 14.4 V | Lower power rating limits use to <1 W clamping; higher leakage affects ultra-low-power systems | Select when space-constrained layout prioritizes footprint over power handling |
| BZX84-C18 (Diodes Inc.) | 18 V, 300 mW, SOT-23 package, 100 Ω ZZT, 100 nA IR @ 14 V | Insufficient for >0.3 W continuous dissipation; unsuitable for thermal-critical 3 W applications | Select only for low-current reference or signal-level clamping where thermal mass is not required |
Compared with SMF18A and BZX84-C18, the 1PMT5931CE3/TR7 delivers 3× higher power capability and superior thermal performance via its Powermite® package, making it uniquely suitable for industrial and automotive applications demanding sustained 3.0 W regulation with minimal PCB thermal design overhead.
Availability
1PMT5931CE3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, medical infusion pumps, and telecom remote radio units requiring stable component supply with guaranteed long-term continuity.
Supply support for 1PMT5931CE3/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 to deliver high-power surface-mount voltage regulation in miniature packages, targeting applications where thermal performance, automated assembly compatibility, and rugged environmental operation are critical.
FAQ
What is the zener voltage tolerance for 1PMT5931CE3/TR7?
The 1PMT5931CE3/TR7 has a nominal zener voltage of 18 V with a standard tolerance of ±5%, as indicated by the 'E' suffix in the part number. Tighter tolerances of ±2% ('C') and ±1% ('D') are available upon request but are not applicable to this specific orderable variant. Voltage is measured at 12 mA test current with TAB 1 held at 30°C.
How is thermal management implemented for 1PMT5931CE3/TR7?
Thermal management for 1PMT5931CE3/TR7 relies on direct conduction from the silicon junction to TAB 1, which serves as both cathode and primary thermal interface. With a specified thermal resistance of 30°C/W junction-to-TAB, effective cooling requires soldering TAB 1 to a minimum 10 mm² copper area on the PCB. The full metallic bottom and locking tab enhance thermal coupling without requiring external heatsinks.
Is 1PMT5931CE3/TR7 compatible with lead-free reflow processes?
Yes, 1PMT5931CE3/TR7 is qualified for lead-free reflow per J-STD-020. Its Powermite® package withstands peak temperatures up to 260°C for 20–40 seconds. The full metallic bottom minimizes warpage and ensures consistent wetting during reflow, and the device meets JEDEC moisture sensitivity level MSL-1-no baking required prior to assembly.
What does the 'TR7' suffix indicate in 1PMT5931CE3/TR7?
The 'TR7' suffix denotes tape-and-reel packaging per EIA-481 standard, with 7-inch reels containing 3,000 units. This format is optimized for high-speed pick-and-place equipment and ensures consistent orientation (cathode TAB 1 leading) for automated SMT assembly. The 'E3' portion confirms the ±5% zener voltage tolerance and 3.0 W power rating.
Can 1PMT5931CE3/TR7 be used in place of through-hole Zeners like 1N5245B?
No-1PMT5931CE3/TR7 is not a drop-in replacement for 1N5245B. While both regulate at ~18 V, the 1PMT5931CE3/TR7 uses a surface-mount Powermite® package with TAB 1 as cathode and requires thermal pad layout, whereas 1N5245B is axial-lead DO-35 with different thermal path and mounting. Electrical parameters also differ: 1N5245B has 500 mW rating and ~20 Ω impedance, making it unsuitable for 3.0 W applications intended for 1PMT5931CE3/TR7.
1PMT5931CE3/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):
- 18 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 12 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 13.7 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
1PMT5931CE3/TR7 FAQ
1.How can I place an order for 1PMT5931CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5931CE3/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 1PMT5931CE3/TR7 reliable?
The price and inventory of 1PMT5931CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5931CE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5931CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5931CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5931CE3/TR7?
1PMT5931CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5931CE3/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 1PMT5931CE3/TR7?
For technical support, including 1PMT5931CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5931CE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5931CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5931CE3/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 1PMT5931CE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5931CE3/TR7?
All 1PMT5931CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5931CE3/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 1PMT5931CE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5931CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5931CE3/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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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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