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Microchip Technology 1PMT5927A/TR7
- Part No.:
- 1PMT5927A/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5927A/TR7.pdf
- Description:
- DIODE ZENER 12V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,211
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Product details
Overview
1PMT5927A/TR7 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. It serves as a precision voltage reference or overvoltage clamp in compact DC power rails and regulator feedback paths.
For engineers reviewing the 1PMT5927A/TR7 datasheet, 1PMT5927A/TR7 pinout, 1PMT5927A/TR7 application, or 1PMT5927A/TR7 equivalent, key selection criteria include its 12 V nominal Zener voltage, 31.2 mA test current, 6.5 Ω dynamic impedance, 3.0 W power rating with metallic-tab thermal path, and ESD robustness (>16 kV HBM).
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 ensure reliable thermal conduction and flux-free soldering-critical for high-reliability automated assembly.
The device exhibits low reverse leakage (≤1 µA at VR = 1 V), a knee current of 0.25 mA, and a knee impedance of 550 Ω, enabling stable regulation even near minimum operating current. Voltage tolerance is ±5% standard, with optional 2% (suffix C) and 1% (suffix D) variants available.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V ±5% at IZT = 31.2 mA - defines regulated output voltage in shunt reference or clamp circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power handling with tab heatsinking |
| Dynamic Impedance (ZZT) | 6.5 Ω at IZT = 31.2 mA - determines voltage stability under load current variation |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables thermal design using tab as primary heat path |
| ESD Rating | >16 kV per Human Body Model - ensures robustness during handling and board assembly |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter useful regulation region |
| Reverse Leakage (IR) | ≤1 µA at VR = 1 V - guarantees low standby power loss in high-impedance bias networks |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral locking tab; cathode designated by TAB 1; mounting position unrestricted; weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary cathode terminal and thermal interface - must be soldered to copper pour for thermal management |
| Lead 2 | Anode | Standard anode connection - electrically isolated from TAB 1; used for circuit return path |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in footprint comparable to smaller diodes |
| Integral heat sink locking tab | TAB 1 acts as both electrical cathode and low-thermal-resistance path (30°C/W) to PCB copper |
| Full metallic bottom | Eliminates solder flux entrapment risk - improves long-term reliability in high-humidity or harsh-environment applications |
| ESD robustness | >16 kV HBM rating reduces need for external protection in input-stage clamping designs |
Applications
| DC Power Rail Clamping | Shunt Voltage Reference |
|---|---|
Use Scenario: Protecting 12 V microcontroller I/O lines against transient overvoltage events in automotive body control modules. IC Role / Device Role / Timing Role: Zener clamping element placed between I/O pin and ground, conducting above 12.6 V to limit voltage excursion. Use Value: Leverages 12 V nominal Zener voltage, 6.5 Ω dynamic impedance, and >16 kV ESD rating to absorb transients without external TVS diode. | Use Scenario: Providing stable 12 V reference for ADC biasing in industrial sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Shunt reference connected across precision resistor divider to maintain fixed node voltage. Use Value: Achieves ±5% initial accuracy and low 0.25 mA knee current, enabling regulation down to microamp-level bias currents. |
| Regulator Feedback Sensing | Overvoltage Protection Circuit |
Use Scenario: Setting output voltage in adjustable DC-DC buck converter feedback loop via resistive divider. IC Role / Device Role / Timing Role: Precision Zener replacing standard resistor divider top leg to improve temperature stability. Use Value: Uses 12 V nominal voltage and 30°C/W thermal resistance to minimize drift when mounted on thermally coupled PCB area. | Use Scenario: Monitoring 12 V supply rail in telecom power shelf to trigger shutdown if voltage exceeds safe threshold. IC Role / Device Role / Timing Role: Zener-based comparator input reference, biased into conduction only during overvoltage fault. Use Value: Relies on tight 12 V ±5% tolerance and low 1 µA reverse leakage to ensure accurate trip point and minimal quiescent current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | DO-41 through-hole package; 12 V ±5%; 1 W power rating; 22 Ω dynamic impedance at 21 mA | Requires manual or wave-solder assembly; unsuitable for high-power or space-constrained SMT layouts | Select when legacy through-hole compatibility or lower cost is prioritized over power density and thermal performance |
| BZX84-C12 | SOT-23 package; 12 V ±5%; 300 mW power rating; 30 Ω dynamic impedance at 5 mA | Limited to low-current bias/reference use; lacks metallic tab for thermal management | Select only for ultra-compact, low-power applications where 3.0 W capability and tab heatsinking are unnecessary |
Compared with 1N4742A and BZX84-C12, the 1PMT5927A/TR7 delivers 3× higher power handling and 4.5× lower dynamic impedance in an SMT package with engineered thermal path-making it uniquely suited for high-stability, high-reliability 12 V regulation in automated production environments.
Availability
1PMT5927A/TR7 is available at Aetrix Electronics and suitable for DC power rail clamping, shunt voltage reference, and regulator feedback sensing requiring stable component supply, consistent parametric performance, and tape-and-reel delivery for SMT line integration.
Supply support for 1PMT5927A/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 semiconductor manufacturer specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was designed to deliver high-power surface-mount voltage regulation with superior thermal performance and assembly reliability-targeting applications where DO-41 or SOT packages lack sufficient power density or thermal margin.
FAQ
What is the Zener voltage tolerance for 1PMT5927A/TR7?
The 1PMT5927A/TR7 has a standard Zener voltage tolerance of ±5% at 12 V nominal, measured 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 as factory-orderable variants. This tolerance directly impacts regulation accuracy in reference and clamp applications.
How is thermal management handled in the 1PMT5927A/TR7 package?
The 1PMT5927A/TR7 uses its metallic TAB 1 as the primary thermal conduction path, with a specified junction-to-TAB thermal resistance of 30°C/W. Effective thermal management requires soldering TAB 1 to a sufficiently sized copper pour on the PCB. This design eliminates reliance on lead-frame conduction and supports the full 3.0 W power rating under defined thermal conditions.
Can 1PMT5927A/TR7 be used in place of a standard 1N4742A?
No, the 1PMT5927A/TR7 is not a drop-in replacement for the 1N4742A due to fundamental differences in package (Powermite® SMT vs. DO-41 through-hole), power rating (3.0 W vs. 1.0 W), and thermal path (metallic tab vs. leads). While both are 12 V Zeners, substituting requires PCB layout change and thermal redesign to accommodate the 1PMT5927A/TR7's SMT footprint and tab-heatsink requirement.
What is the maximum reverse leakage current for 1PMT5927A/TR7?
The maximum reverse leakage current for 1PMT5927A/TR7 is 1 µA at a reverse voltage of 1 V, measured at TL = 30°C. This low leakage supports high-impedance bias networks and minimizes standby power loss in battery-powered or energy-sensitive applications where the 1PMT5927A/TR7 serves as a reference or clamp element.
Is 1PMT5927A/TR7 compatible with standard SMT reflow profiles?
Yes, the 1PMT5927A/TR7 is qualified for standard lead-free reflow soldering per IPC/JEDEC J-STD-020. Its molded Powermite® package withstands peak temperatures up to 260°C for 30 seconds. The full metallic bottom prevents flux entrapment, reducing post-reflow cleaning requirements and enhancing long-term interfacial reliability in humid or corrosive environments.
1PMT5927A/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:
- ±10%
- 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
1PMT5927A/TR7 FAQ
1.How can I place an order for 1PMT5927A/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5927A/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 1PMT5927A/TR7 reliable?
The price and inventory of 1PMT5927A/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5927A/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5927A/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5927A/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5927A/TR7?
1PMT5927A/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5927A/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 1PMT5927A/TR7?
For technical support, including 1PMT5927A/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5927A/TR7 requirements.
6.How does Aetrix verify that 1PMT5927A/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5927A/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 1PMT5927A/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5927A/TR7?
All 1PMT5927A/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5927A/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 1PMT5927A/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5927A/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5927A/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
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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