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Microchip Technology 1PMT5927E3/TR7
- Part No.:
- 1PMT5927E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5927E3/TR7.pdf
- Description:
- DIODE ZENER 12V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,431
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Product details
Overview
1PMT5927E3/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-tab. It serves as a precision voltage reference or overvoltage clamp in power supply regulation and ESD-protected I/O circuits.
For engineers reviewing the 1PMT5927E3/TR7 datasheet, 1PMT5927E3/TR7 pinout, 1PMT5927E3/TR7 application, or 1PMT5927E3/TR7 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 in reverse breakdown mode with a nominal zener voltage of 12 V at 31.2 mA (IZT), exhibiting low dynamic impedance (6.5 Ω) and tight voltage regulation under stable thermal conditions. Its full metallic bottom and integral heat-sink locking tab enable reliable thermal transfer to the PCB pad while preventing solder flux entrapment during reflow.
The device supports operation across -55°C to +150°C junction temperature range and delivers >16 kV HBM ESD protection. Reverse leakage remains ≤1 µA up to 9.1 V (VR), and forward voltage is 1.2 V at 200 mA - confirming robust bidirectional surge handling capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V ±5% at IZT = 31.2 mA, TL = 30°C - defines stable regulation point for feedback or clamping |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power before thermal shutdown or degradation |
| Dynamic Impedance (ZZT) | 6.5 Ω at IZT - determines voltage deviation under load transients (ΔV = ZZT × ΔI) |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter useful regulation region; critical for low-power biasing |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables accurate PCB copper area sizing for thermal management |
| ESD Rating | >16 kV per HBM - qualifies for direct placement on exposed I/O lines without external protection |
| Reverse Leakage (IR) | ≤1 µA at VR = 9.1 V - ensures minimal standby 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 designated by TAB 1; weight ≈ 0.016 g; DO-216 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical connection point; must be soldered to thermal pad for rated 3.0 W dissipation |
| Lead 2 | Anode | Standard anode terminal; connects to ground or lower-potential node in clamping configuration |
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 conduction vs. plastic-bottom SMD packages |
| Integral heat-sink locking tab | Provides mechanical anchoring during reflow and enhances thermal coupling to PCB copper |
| ESD rating >16 kV HBM | Allows direct integration into unshielded I/O paths without additional TVS staging |
Applications
| Power Supply Voltage Reference | ESD-Protected I/O Clamping |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation loops. IC Role / Device Role / Timing Role: Zener reference providing precise 12 V threshold for optocoupler bias and error amplifier input. Use Value: Tight 5% tolerance and low 6.5 Ω impedance ensure <±0.5 V output variation across line/load changes. | Use Scenario: Protecting microcontroller GPIO pins connected to industrial sensors exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor clamping positive/negative excursions beyond 12 V/–1.2 V. Use Value: >16 kV HBM rating and sub-µA leakage preserve signal integrity while surviving repeated ESD events. |
| Low-Power Bias Network | Overvoltage Detection Threshold |
Use Scenario: Generating stable bias voltage for analog front-end op-amps in battery-powered instrumentation. IC Role / Device Role / Timing Role: Low-current Zener source operating near knee current (0.25 mA) to minimize quiescent draw. Use Value: 0.25 mA IZK enables regulation down to 10 µA standby current with predictable VZ drift. | Use Scenario: Triggering shutdown logic when input rail exceeds safe operating limit in telecom power modules. IC Role / Device Role / Timing Role: Precision 12 V threshold detector feeding comparator input with fast response to overvoltage faults. Use Value: 30°C/W thermal resistance allows direct mounting to control board copper, ensuring stable trip point across ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V ±5%, 1.0 W rating, DO-41 through-hole package, 22 Ω ZZT at 21 mA | Lower power handling and no integrated heat sink; requires larger PCB area and manual insertion | Select only if legacy through-hole assembly or derated power (<1.0 W) suffices |
| BZX84-C12 | 12 V ±5%, 300 mW rating, SOT-23 package, 30 Ω ZZT at 5 mA | Not suitable for >300 mW continuous dissipation; lacks metallic thermal path and ESD robustness | Use only in ultra-low-power signal-level clamping where 1PMT5927E3/TR7's 3.0 W capability is unnecessary |
Compared with 1N4742A and BZX84-C12, the 1PMT5927E3/TR7 uniquely combines 3.0 W power handling, 6.5 Ω dynamic impedance, and >16 kV HBM ESD rating in a thermally optimized surface-mount package - making it the sole option for high-reliability, high-power SMD Zener applications requiring both regulation stability and surge resilience.
Availability
1PMT5927E3/TR7 is available at Aetrix Electronics and suitable for power supply regulation, ESD-protected I/O design, low-power bias networks, and overvoltage detection requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5927E3/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 with superior thermal performance and ESD robustness - specifically targeting space-constrained, high-stress power and interface circuits.
FAQ
What is the zener voltage tolerance for 1PMT5927E3/TR7?
The 1PMT5927E3/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 (±2% and ±1%) are available with suffixes C and D, but the base 1PMT5927E3/TR7 uses the standard ±5% specification per MSC0995 Rev F.
Can 1PMT5927E3/TR7 be used in place of a 1N4742A?
No - while both are 12 V Zener diodes, the 1PMT5927E3/TR7 is rated for 3.0 W at TAB 1 = 60°C and uses a surface-mount Powermite® package with integral heat sinking, whereas the 1N4742A is a 1.0 W through-hole DO-41 device. Direct substitution requires PCB redesign and thermal validation; 1PMT5927E3/TR7 is not a drop-in replacement.
What is the maximum reverse leakage current for 1PMT5927E3/TR7?
The maximum reverse leakage current for 1PMT5927E3/TR7 is 1 µA at a reverse voltage of 9.1 V (VR), as specified in the Electrical Characteristics table of MSC0995. This value is guaranteed across the full operating temperature range and supports low-power bias and sensing applications.
Does 1PMT5927E3/TR7 require special PCB layout considerations?
Yes - the 1PMT5927E3/TR7 relies on TAB 1 (cathode) for thermal conduction. To achieve its rated 3.0 W dissipation, TAB 1 must be soldered to a minimum 10 mm² copper pad with ≥2 thermal vias to inner/ground planes. Insufficient copper area will cause thermal derating and premature failure.
Is 1PMT5927E3/TR7 compliant with RoHS and REACH?
Yes - 1PMT5927E3/TR7 is manufactured and tested in accordance with ISO 9001 and complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed by Microsemi's material declarations and packaging documentation referenced in MSC0995 Rev F.
1PMT5927E3/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
1PMT5927E3/TR7 FAQ
1.How can I place an order for 1PMT5927E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5927E3/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 1PMT5927E3/TR7 reliable?
The price and inventory of 1PMT5927E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5927E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5927E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5927E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5927E3/TR7?
1PMT5927E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5927E3/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 1PMT5927E3/TR7?
For technical support, including 1PMT5927E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5927E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5927E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5927E3/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 1PMT5927E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5927E3/TR7?
All 1PMT5927E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5927E3/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 1PMT5927E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5927E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5927E3/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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