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Microchip Technology 1PMT5927/TR7
- Part No.:
- 1PMT5927/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5927/TR7.pdf
- Description:
- DIODE ZENER 12V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,377
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Product details
Overview
1PMT5927B from Microsemi is a 12 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 6.5 Ω dynamic impedance at 31.2 mA test current and thermal resistance of 30°C/W junction-to-TAB1 - used for precision voltage regulation and overvoltage protection in compact DC power rails.
For engineers reviewing the 1PMT5927B datasheet, 1PMT5927B pinout, 1PMT5927B application, or 1PMT5927B equivalent, key selection criteria include zener voltage tolerance, power derating above 60°C, knee current (0.25 mA), reverse leakage (<1 µA at 9.1 V), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1, requiring no external biasing. Its full metallic bottom and integral heat sink locking tab enable direct thermal conduction to PCB copper, supporting stable regulation under transient load conditions.
The device exhibits low reverse leakage (≤1 µA at VR = 9.1 V), tight dynamic impedance (6.5 Ω at IZT = 31.2 mA), and ESD robustness (>16 kV HBM), making it suitable for industrial control I/O protection and regulated supply monitoring where flux entrapment must be avoided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 12 V ±5% at 31.2 mA - defines nominal regulation point with predictable deviation across temperature and current |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power before thermal shutdown or parameter drift |
| Dynamic Impedance | 6.5 Ω at 31.2 mA - determines output voltage stability under varying load current |
| Knee Current | 0.25 mA - minimum current needed to enter useful regulation region; critical for low-power standby circuits |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies thermal path efficiency to PCB heatsink area |
| ESD Rating | >16 kV per HBM - ensures survivability during handling and board-level ESD events |
| Reverse Leakage | ≤1 µA at 9.1 V - limits quiescent current in high-impedance sensing or battery-backed circuits |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat sink locking tab; cathode identified by TAB 1; DO-216 outline; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to copper pour for thermal management and circuit return |
| Lead 2 | Anode | Signal-side terminal; connects to regulated node or voltage divider input; non-tab side of package |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, preventing post-assembly corrosion and reliability failures |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| EIA-481 tape-and-reel packaging | Enables high-speed automated placement without manual handling or orientation errors |
| 16 kV HBM ESD rating | Reduces need for external ESD protection in I/O interface and sensor front-end designs |
Applications
| Industrial Sensor Signal Conditioning | DC Power Rail Overvoltage Clamp |
|---|---|
Use Scenario: Protecting analog front-ends of 4–20 mA transmitters against supply surges up to 24 V. IC Role / Device Role / Timing Role: Zener clamping element referenced to ground, limiting input voltage to downstream op-amps and ADCs. Use Value: 12 V breakdown with 6.5 Ω impedance ensures fast response and minimal overshoot during 100 ns transients. | Use Scenario: Safeguarding microcontroller reset lines powered from 12 V auxiliary rails. IC Role / Device Role / Timing Role: Shunt regulator that sinks excess current when rail exceeds 12 V, holding reset logic low. Use Value: 3.0 W rating allows sustained clamping during brown-out recovery without thermal runaway. |
| Automated Test Equipment (ATE) Reference | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Providing stable 12 V reference for DAC output buffers in calibration modules. IC Role / Device Role / Timing Role: Precision voltage reference with ±5% tolerance and low tempco via thermal coupling to PCB copper. Use Value: 30°C/W junction-to-TAB1 enables stable operation at 75°C ambient when mounted on 1-in² copper pad. | Use Scenario: Protecting 24 V digital inputs against field-wiring faults and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional clamp (with series resistor) limiting input voltage to safe levels for optocoupler drivers. Use Value: ≤1 µA reverse leakage at 9.1 V prevents false triggering in high-impedance input stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF12A (ON Semiconductor) | 12 V, 400 W peak power, 1.5 kW surge rating; SOD-123FL package; higher capacitance (120 pF) | Designed for transient suppression, not precision regulation; lacks tight Zener tolerance or low knee current | Select only for surge-only protection; not suitable for voltage reference or low-current regulation |
| BZX84-C12 (Diodes Inc.) | 12 V, ±5%, 300 mW, SOT-23; 30 Ω dynamic impedance at 5 mA; no metallic thermal tab | Lower power, no integrated heatsink; unsuitable for >100 mA continuous operation or high-thermal-load environments | Use only in space-constrained, low-power signal conditioning; avoid where thermal management is critical |
Compared with SMF12A and BZX84-C12, the 1PMT5927B uniquely combines 3.0 W continuous power, 30°C/W thermal resistance, and 0.25 mA knee current - enabling stable regulation in thermally demanding industrial power interfaces where both precision and ruggedness are required.
Availability
1PMT5927B is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, DC power rail overvoltage clamping, and programmable logic controller (PLC) input protection requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5927B 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 surface-mount voltage regulation in thermally constrained, high-reliability industrial systems - emphasizing thermal performance, flux-free assembly, and ESD resilience.
FAQ
What is the Zener voltage tolerance for 1PMT5927B?
The 1PMT5927B has a standard Zener voltage tolerance of ±5% at 31.2 mA test current and TAB 1 temperature of 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request but are not applicable to the base 1PMT5927B part number.
How is thermal management handled in the 1PMT5927B package?
The 1PMT5927B uses a Powermite® package with TAB 1 as the cathode and primary thermal path. Its 30°C/W junction-to-TAB1 thermal resistance requires direct soldering of TAB 1 to a copper pour for effective heat dissipation. The full metallic bottom and locking tab enhance thermal conduction without flux entrapment.
Can 1PMT5927B be used in automated SMT assembly?
Yes, the 1PMT5927B is supplied in EIA-481 compliant tape-and-reel format (3,000 pieces per 7-inch reel). Its symmetric DO-216 outline and integral locking tab ensure reliable pick-and-place accuracy and mechanical stability during reflow, with no orientation ambiguity.
What is the maximum reverse leakage current for 1PMT5927B?
The 1PMT5927B specifies a maximum reverse leakage current of 1 µA at a reverse voltage of 9.1 V and ambient temperature of 30°C. This low leakage supports use in high-impedance circuits such as sensor bias networks and battery-monitoring dividers where quiescent current must be minimized.
Does 1PMT5927B meet any ESD immunity standards?
Yes, the 1PMT5927B is rated for >16 kV electrostatic discharge per the Human Body Model (HBM), as verified per JEDEC JS-001. This level of ESD robustness eliminates the need for additional on-board protection in many industrial I/O and control applications.
1PMT5927/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):
- 12 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 6.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.1 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
1PMT5927/TR7 FAQ
1.How can I place an order for 1PMT5927/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5927/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 1PMT5927/TR7 reliable?
The price and inventory of 1PMT5927/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5927/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5927/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5927/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5927/TR7?
1PMT5927/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5927/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 1PMT5927/TR7?
For technical support, including 1PMT5927/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5927/TR7 requirements.
6.How does Aetrix verify that 1PMT5927/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5927/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 1PMT5927/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5927/TR7?
All 1PMT5927/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5927/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 1PMT5927/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5927/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5927/TR7 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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