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Microchip Technology 1PMT5931A/TR13
- Part No.:
- 1PMT5931A/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5931A/TR13.pdf
- Description:
- DIODE ZENER 18V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,761
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Product details
Overview
1PMT5931A/TR13 from Microsemi is a 18 V, 3.0 W surface-mount Zener diode in the Powermite® package (DO-216), featuring 12 Ω dynamic impedance at 20.8 mA test current, 650 µA max reverse leakage at 13.7 V, and thermal resistance of 30°C/W junction-to-tab - used for precision voltage regulation and overvoltage protection in power supply rails and I/O interface circuits.
For engineers reviewing the 1PMT5931A/TR13 datasheet, 1PMT5931A/TR13 pinout, 1PMT5931A/TR13 application, or 1PMT5931A/TR13 equivalent, key selection criteria include zener voltage tolerance (±5% standard), ESD rating (>16 kV HBM), full metallic bottom for flux-free soldering, and tab-1 cathode designation for automated assembly compatibility.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1, requiring no external bias circuitry. Its DO-216 molded package integrates a locking tab acting as an integral heat sink and provides full metallic bottom to prevent solder flux entrapment during reflow.
Rated for -55°C to +150°C junction/storage temperature, it delivers stable 18 V regulation at 20.8 mA (IZT), with 12 Ω dynamic impedance (ZZT) and 650 µA maximum reverse leakage (IR) at VR = 13.7 V - enabling reliable clamping in low-power analog and digital protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18 V ±5% at 20.8 mA - defines nominal regulation point for voltage reference or clamp function |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power handling with tab heatsinking |
| Dynamic Impedance (ZZT) | 12 Ω at IZT = 20.8 mA - determines regulation stiffness under small-signal current variation |
| Reverse Leakage (IR) | ≤650 µA at VR = 13.7 V - ensures low standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - quantifies thermal path efficiency for PCB copper pad heatsinking |
| ESD Rating | >16 kV per Human Body Model - supports robustness in handling and board-level ESD events |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter useful regulation region near VZ |
Pinout & Package
Package: DO-216 (Powermite®), surface-mount, molded plastic with full metallic bottom and integral locking tab (TAB 1 = cathode). Mounting orientation is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and polarity reference; must be connected to ground or low-impedance return path |
| Lead 2 | Anode | Input/positive-side connection; reverse-biased during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat sink locking tab | TAB 1 serves as both cathode and primary thermal path, reducing junction-to-PCB thermal resistance to 30°C/W |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Automated insertion compatibility | DO-216 mechanical footprint and weight (0.016 g) optimized for pick-and-place and auto-insertion equipment |
| High ESD immunity | >16 kV HBM rating enables safe handling and integration into unshielded industrial I/O interfaces |
Applications
| Industrial Power Supply Regulation | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for op-amp comparators and ADC bias networks in 24 V industrial PLC modules. IC Role / Device Role / Timing Role: Zener diode providing 18 V shunt regulation with ≤650 µA leakage to minimize loading on high-impedance sensor signal paths. Use Value: Maintains regulation accuracy within ±5% across -40°C to +125°C ambient, supported by 30°C/W thermal resistance to PCB copper. | Use Scenario: Clamping transient overvoltage on CAN transceiver VIO pins exposed to load-dump events in 12 V automotive subsystems. IC Role / Device Role / Timing Role: Fast-response voltage clamp limiting input to 18 V, leveraging 3.0 W peak dissipation and low ZZT (12 Ω) for minimal overshoot. Use Value: Survives repeated 100 V/50 ms pulses without degradation due to robust DO-216 package and >16 kV HBM ESD rating. |
| Telecom Line Card Biasing | Medical Instrument Overvoltage Protection |
Use Scenario: Generating stable 18 V bias for RF amplifier stages in LTE base station line cards operating at elevated ambient temperatures. IC Role / Device Role / Timing Role: Shunt regulator maintaining voltage despite varying load current, using TAB 1 thermal coupling to heatsinked PCB copper pour. Use Value: Sustains regulation up to +150°C junction temperature with no derating below 3.0 W until TAB exceeds 60°C. | Use Scenario: Protecting analog front-end inputs of portable ECG monitors from ESD and electrostatic discharge during clinical use. IC Role / Device Role / Timing Role: Low-leakage (≤650 µA) Zener clamp absorbing >16 kV HBM strikes while preserving signal integrity on high-gain biopotential amplifiers. Use Value: Prevents latch-up or damage in precision analog ICs without adding series resistance that degrades SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4746A | 18 V, 1 W, DO-41 through-hole; higher ZZT (20 Ω), no integrated heatsink tab | Requires external heatsinking for >1 W operation; unsuitable for high-density SMT layouts | Select 1PMT5931A/TR13 when 3.0 W SMT regulation with tab-1 thermal path is required |
| BZX84-C18 | 18 V, 300 mW, SOT-23; 15 Ω ZZT, 100 nA IR at 14.4 V - lower power, tighter leakage | Limited to low-power signal conditioning; cannot sustain 3.0 W clamping duty cycles | Select 1PMT5931A/TR13 when sustained 3.0 W transient suppression or bias regulation is needed |
Compared with 1N4746A and BZX84-C18, the 1PMT5931A/TR13 uniquely combines 3.0 W SMT power handling, DO-216 thermal design with TAB 1 cathode/heat sink, and 650 µA leakage at 13.7 V - making it optimal for space-constrained, thermally demanding regulation tasks where through-hole or low-power SMT alternatives fall short.
Availability
1PMT5931A/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, telecom line card biasing, and medical instrument overvoltage protection requiring stable component supply and traceable sourcing.
Supply support for 1PMT5931A/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, including 1PMT5931A/TR13, was engineered for high-power-density surface-mount voltage regulation and transient suppression in harsh-environment applications where thermal performance and assembly reliability are critical.
FAQ
What is the Zener voltage tolerance for 1PMT5931A/TR13?
The 1PMT5931A/TR13 has a standard Zener voltage tolerance of ±5% at 18 V, measured at 20.8 mA test current and TAB 1 temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the base part number 1PMT5931A/TR13 specifies ±5%.
How is the cathode identified on 1PMT5931A/TR13?
The cathode of the 1PMT5931A/TR13 is designated by TAB 1, as confirmed in the mechanical specifications of the MSC0995.PDF datasheet. This metallic tab serves dual roles: electrical cathode connection and primary thermal conduction path to the PCB.
What is the maximum power dissipation of 1PMT5931A/TR13 and under what conditions?
The 1PMT5931A/TR13 is rated for 3.0 W DC power dissipation when TAB 1 is maintained at 60°C, per the Maximum Ratings table in MSC0995.PDF. Derating is required above this temperature, and thermal resistance is specified as 30°C/W junction-to-TAB 1.
Does 1PMT5931A/TR13 meet any ESD standards?
Yes, the 1PMT5931A/TR13 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as stated in the FEATURES section of MSC0995.PDF - confirming robustness against common handling and system-level electrostatic discharge events.
What packaging format is used for 1PMT5931A/TR13?
The 1PMT5931A/TR13 is supplied in EIA Standard 481 tape-and-reel packaging, with 3,000 pieces per 7-inch reel and 12,000 pieces per 13-inch reel - compatible with standard SMT pick-and-place equipment and automated assembly lines.
1PMT5931A/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):
- 18 V
- Tolerance:
- ±10%
- 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
1PMT5931A/TR13 FAQ
1.How can I place an order for 1PMT5931A/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5931A/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 1PMT5931A/TR13 reliable?
The price and inventory of 1PMT5931A/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5931A/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5931A/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5931A/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5931A/TR13?
1PMT5931A/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5931A/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 1PMT5931A/TR13?
For technical support, including 1PMT5931A/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5931A/TR13 requirements.
6.How does Aetrix verify that 1PMT5931A/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5931A/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 1PMT5931A/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5931A/TR13?
All 1PMT5931A/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5931A/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 1PMT5931A/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5931A/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5931A/TR13 Tags
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