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Microchip Technology 1PMT5925/TR7
- Part No.:
- 1PMT5925/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5925/TR7.pdf
- Description:
- DIODE ZENER 10V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,507
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Product details
Overview
1PMT5925B from Microsemi is a 10 V, 3.0 W surface-mount Zener diode in the Powermite® package (DO-216), featuring 37.5 mA test current, 4.5 Ω dynamic impedance at IZT, 0.25 mA knee current, and thermal resistance of 30°C/W junction-to-tab. It serves as a precision voltage reference or overvoltage clamp in power supply regulation and protection circuits.
For engineers reviewing the 1PMT5925B datasheet, 1PMT5925B pinout, 1PMT5925B application, or 1PMT5925B equivalent, key selection criteria include zener voltage tolerance (±5% standard), low reverse leakage (≤5 µA at 8.0 V), ESD robustness (>16 kV HBM), and thermal performance enabled by the full-metallic bottom and integral heat sink tab.
Technical Context
This Zener diode operates with a nominal zener voltage of 10 V at 37.5 mA test current (IZT), with tight dynamic impedance (4.5 Ω) ensuring stable regulation under load transients. Its 0.25 mA knee current (IZK) and 500 Ω knee impedance (ZZK) support reliable turn-on at low bias levels.
The Powermite® package (DO-216) integrates a metallic tab (TAB 1) as cathode and primary thermal path, delivering 30°C/W junction-to-tab thermal resistance and enabling 3.0 W power dissipation when TAB 1 is held at 60°C - critical for compact, high-reliability power management designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10 V ±5% at 37.5 mA - defines precise clamping/reference level in feedback or protection paths |
| Power Dissipation | 3.0 W with TAB 1 at 60°C - enables high-power density regulation without external heatsink |
| Dynamic Impedance (ZZT) | 4.5 Ω at 37.5 mA - ensures minimal output voltage variation under changing load current |
| Knee Current (IZK) | 0.25 mA - guarantees stable conduction onset for low-current biasing applications |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - allows accurate thermal design using tab as thermal interface |
| ESD Rating | >16 kV per HBM - provides robust handling and system-level ESD immunity without added protection |
| Reverse Leakage (IR) | ≤5 µA at 8.0 V - minimizes standby power loss in high-impedance sensing or reference nodes |
Pinout & Package
Package: DO-216 (Powermite®), molded surface-mount package 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 thermal path and electrical cathode connection; must be soldered to copper pour for thermal performance |
| Lead 2 | Anode | Standard anode terminal; electrically isolated from TAB 1; used for circuit connection |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free assembly |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| ESD robustness | >16 kV HBM rating reduces need for external ESD protection in input/output stages |
| Automatic insertion compatibility | Package geometry and tab design support high-yield placement with pick-and-place equipment |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in optocoupler feedback loop of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Precision voltage reference establishing error threshold for TL431 or similar shunt regulators. Use Value: 10 V nominal zener voltage and 4.5 Ω dynamic impedance ensure stable regulation across line/load variations. | Use Scenario: Placed across sensitive IC inputs or bus lines to limit transient overvoltage events. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting surge current away from downstream components. Use Value: >16 kV HBM rating and 3.0 W peak dissipation enable single-device protection against common ESD and surge threats. |
| Industrial Sensor Reference | Programmable Logic Controller Input Conditioning |
Use Scenario: Provides stable 10 V reference for analog sensor signal conditioning in harsh environments. IC Role / Device Role / Timing Role: Low-drift, low-leakage voltage reference source for ADC bias or excitation circuits. Use Value: ≤5 µA reverse leakage at 8.0 V and -55°C to +150°C operating range ensure accuracy over temperature and time. | Use Scenario: Clamps 24 V industrial control signals to safe logic levels before FPGA or microcontroller inputs. IC Role / Device Role / Timing Role: Interface-level voltage limiter protecting digital inputs from field-induced transients. Use Value: DO-216 package enables high-density layout; metallic tab improves thermal response during repetitive surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | 10 V, 1 W, DO-41 package, 17 Ω ZZT, no metallic tab or integrated heat sink | Limited to lower-power, non-automated assembly; lacks ESD rating and thermal performance | Select when cost sensitivity outweighs thermal/ESD requirements and board space permits larger through-hole footprint |
| BZX84-C10 | 10 V, 300 mW, SOT-23 package, 20 Ω ZZT, 100 nA IR at 8 V | Lower power rating restricts use to signal-level clamping; higher leakage impacts precision references | Choose for ultra-compact, low-current biasing where 3.0 W capability is unnecessary |
Compared with 1N4740A and BZX84-C10, the 1PMT5925B delivers 3× the power handling, 4× lower dynamic impedance, and integrated thermal/ESD robustness - making it uniquely suited for automated, high-reliability power management in industrial and automotive systems.
Availability
1PMT5925B is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and programmable logic controller input conditioning requiring stable component supply and long-term manufacturability.
Supply support for 1PMT5925B 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 company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, industrial, and communications markets.
The Powermite® Zener diode product line was designed for surface-mount power regulation and protection in space-constrained, thermally demanding applications - emphasizing robust packaging, automated assembly compatibility, and extended temperature operation.
FAQ
What is the zener voltage tolerance for 1PMT5925B?
The 1PMT5925B has a standard zener voltage tolerance of ±5% at 10 V nominal. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are also available upon request. Voltage is measured at 37.5 mA test current with TAB 1 maintained at 30°C, and readings must be taken within 20 seconds of applying DC current to avoid thermal drift effects on the 1PMT5925B measurement.
How is thermal performance specified for 1PMT5925B?
The 1PMT5925B specifies a thermal resistance of 30°C/W junction-to-TAB 1, meaning each watt of dissipated power raises the junction temperature 30°C above the tab temperature. Full 3.0 W power dissipation is rated only when TAB 1 is held at 60°C - requiring adequate PCB copper area and thermal vias for effective heat spreading in the 1PMT5925B implementation.
Does 1PMT5925B have a defined cathode marking?
Yes - the cathode of the 1PMT5925B is unambiguously designated by TAB 1, which is the large metallic pad on the bottom of the DO-216 Powermite® package. This tab serves as both the cathode electrical connection and the primary thermal interface, and its identification is critical for correct orientation during PCB layout and assembly of the 1PMT5925B.
What is the maximum reverse leakage current for 1PMT5925B?
The 1PMT5925B has a maximum reverse leakage current (IR) of 5 µA at a reverse voltage (VR) of 8.0 V, measured at TL = 30°C. This low leakage supports high-impedance reference and sensing applications where standby current must be minimized - a key differentiator versus higher-leakage alternatives in the same voltage class, such as the 1PMT5925B's broader family.
Is 1PMT5925B compatible with automated SMT assembly processes?
Yes - the 1PMT5925B is explicitly designed for compatibility with automatic insertion and surface-mount equipment. Its Powermite® package features a unique locking tab that enhances mechanical stability during placement, and its full metallic bottom prevents solder flux entrapment during reflow, resulting in high first-pass yield and repeatable solder joint integrity for the 1PMT5925B in high-volume manufacturing.
1PMT5925/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):
- 10 V
- Tolerance:
- ±20%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 4.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 8 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
1PMT5925/TR7 FAQ
1.How can I place an order for 1PMT5925/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5925/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 1PMT5925/TR7 reliable?
The price and inventory of 1PMT5925/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5925/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5925/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5925/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5925/TR7?
1PMT5925/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5925/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 1PMT5925/TR7?
For technical support, including 1PMT5925/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5925/TR7 requirements.
6.How does Aetrix verify that 1PMT5925/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5925/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 1PMT5925/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5925/TR7?
All 1PMT5925/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5925/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 1PMT5925/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5925/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5925/TR7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
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
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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