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Microchip Technology 1PMT5935CE3/TR7
- Part No.:
- 1PMT5935CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5935CE3/TR7.pdf
- Description:
- DIODE ZENER 27V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,089
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Product details
Overview
1PMT5935CE3/TR7 from Microsemi is a 27 V, ±5% tolerance Zener diode in Powermite® surface-mount package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 23 Ω dynamic impedance at 13.9 mA test current and 1 µA max reverse leakage at 20.6 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5935CE3/TR7 datasheet, 1PMT5935CE3/TR7 pinout, 1PMT5935CE3/TR7 application, or 1PMT5935CE3/TR7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly.
Technical Context
This device operates as a two-terminal voltage-regulating diode with cathode designated by TAB 1. Its Powermite® package integrates a full metallic bottom to prevent solder flux entrapment and a locking tab acting as an integral heat sink, enabling reliable thermal transfer in high-power-density layouts.
The 1PMT5935CE3/TR7 delivers stable 27 V regulation under DC conditions with tight voltage control (±5%), low reverse leakage (≤1 µA at VR = 20.6 V), and robust ESD immunity (>16 kV HBM), making it suitable for transient-sensitive analog and power-supply feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±5% at IZT = 13.9 mA - defines nominal clamping/reference level with production-grade tolerance |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling with defined thermal boundary |
| Dynamic Impedance (ZZT) | 23 Ω at IZT = 13.9 mA - determines voltage regulation stiffness under small-signal AC variations |
| Knee Impedance (ZZK) | 0.25 Ω at IZK = 0.25 mA - indicates low-voltage conduction onset sharpness for low-current regulation |
| Reverse Leakage (IR) | ≤1 µA at VR = 20.6 V - ensures minimal parasitic current in standby or high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies thermal path efficiency for PCB copper pad design and derating |
| ESD Rating | >16 kV per Human Body Model - supports robustness in handling and board-level ESD events |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tab; cathode identified by TAB 1; weight ≈ 0.016 g; mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and voltage-reference node; must be connected to thermal pad or ground plane for rated power dissipation |
| Lead 2 | Anode | Current entry point during forward bias; reverse-biased operation places this terminal at lower potential than TAB 1 |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power capability in compact footprint |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability and void-free solder joints |
| 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 protection in low-energy interface circuits |
| Tight Zener tolerance option | ±5% standard; ±2% (suffix C) and ±1% (suffix D) available for precision reference applications |
Applications
| Industrial Power Supply Feedback | Automotive Body Control Module Clamp |
|---|---|
Use Scenario: Regulates error amplifier reference in isolated flyback converter feedback loop. IC Role / Device Role / Timing Role: Zener diode providing stable 27 V reference for optocoupler bias and TL431-like comparator input. Use Value: Maintains output regulation accuracy within ±5% across temperature and load, leveraging 23 Ω ZZT and low 1 µA IR. | Use Scenario: Clamps 24 V battery rail transients in BCM microcontroller power domain. IC Role / Device Role / Timing Role: Overvoltage protection device shunting surge energy above 27 V to ground via TAB 1 thermal pad. Use Value: Absorbs 3.0 W continuously and handles >16 kV ESD without degradation, ensuring system-level EMC compliance. |
| Programmable Logic Controller I/O Protection | Medical Sensor Signal Conditioning |
Use Scenario: Protects 24 V digital input circuitry against field-wiring induced surges. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed between input terminal and controller GPIO. Use Value: Low knee impedance (0.25 Ω) ensures rapid turn-on below 20.6 V, limiting voltage overshoot during fast transients. | Use Scenario: Stabilizes excitation voltage for bridge-based pressure sensors in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference establishing 27 V bias for analog front-end amplifiers. Use Value: ±5% tolerance and 30°C/W thermal resistance enable stable bias under ambient temperature swings up to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5935B | Same 27 V Zener voltage and ±5% tolerance, but in DO-41 through-hole package; no metallic bottom or locking tab; 50°C/W thermal resistance | Requires manual or wave soldering; unsuitable for high-density SMT layouts or thermal-critical designs | Select 1N5935B only when legacy through-hole assembly or higher thermal margin is acceptable |
| BZX84-C27 | 27 V Zener in SOT-23; 350 mW power rating; 100 Ω ZZT; 100 nA IR at 21.6 V; no integrated heat sink | Limited to low-power signal-level clamping; cannot replace 1PMT5935CE3/TR7 in 3 W power-rail applications | Choose BZX84-C27 for space-constrained signal conditioning where power dissipation < 0.35 W |
Compared with 1N5935B and BZX84-C27, the 1PMT5935CE3/TR7 uniquely combines 3.0 W SMT power handling, 30°C/W thermal resistance, and >16 kV ESD rating-making it the only viable option for thermally demanding, high-reliability industrial SMT clamping.
Availability
1PMT5935CE3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, programmable logic controller I/O protection, and medical sensor signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for 1PMT5935CE3/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 assembly reliability-targeting applications where DO-41 and SOT packages fall short in power density and thermal management.
FAQ
What is the Zener voltage tolerance for 1PMT5935CE3/TR7?
The 1PMT5935CE3/TR7 has a standard Zener voltage tolerance of ±5% at 27 V, measured at 13.9 mA test current with TAB 1 held at 30°C. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available as custom order options, but the base 1PMT5935CE3/TR7 part uses the ±5% specification confirmed in MSC0995 Rev F.
How is thermal management handled in the 1PMT5935CE3/TR7 package?
The 1PMT5935CE3/TR7 uses a Powermite® package with TAB 1 as the cathode and primary thermal path. Its 30°C/W junction-to-TAB thermal resistance requires connection of TAB 1 to a minimum 100 mm² copper pour for full 3.0 W dissipation at 60°C case temperature. The locking tab enhances mechanical retention and thermal conduction, unlike standard SOD or SOT packages.
Can 1PMT5935CE3/TR7 be used in place of a DO-41 Zener like 1N5935B?
No-1PMT5935CE3/TR7 is not a drop-in replacement for 1N5935B due to fundamental differences in package, thermal path, and assembly method. While both share 27 V Zener voltage, the 1PMT5935CE3/TR7 requires SMT reflow and relies on TAB 1 thermal coupling, whereas 1N5935B uses through-hole mounting and has 50°C/W thermal resistance. PCB redesign is mandatory.
What is the maximum reverse leakage current for 1PMT5935CE3/TR7?
The maximum reverse leakage current for 1PMT5935CE3/TR7 is 1 µA at a reverse voltage of 20.6 V, tested at TL = 30°C. This value is specified in the Electrical Characteristics table of MSC0995 Rev F and reflects worst-case leakage under defined bias and temperature conditions-not a typical value.
Does 1PMT5935CE3/TR7 meet any industry-standard ESD ratings?
Yes, the 1PMT5935CE3/TR7 is rated for >16 kV per the Human Body Model (HBM) ESD test, as stated in the FEATURES section of MSC0995 Rev F. This rating applies to the packaged device and supports robust handling and board-level ESD resilience without requiring additional protection circuitry in many industrial environments.
1PMT5935CE3/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):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 23 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 20.6 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
1PMT5935CE3/TR7 FAQ
1.How can I place an order for 1PMT5935CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5935CE3/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 1PMT5935CE3/TR7 reliable?
The price and inventory of 1PMT5935CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5935CE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5935CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5935CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5935CE3/TR7?
1PMT5935CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5935CE3/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 1PMT5935CE3/TR7?
For technical support, including 1PMT5935CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5935CE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5935CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5935CE3/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 1PMT5935CE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5935CE3/TR7?
All 1PMT5935CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5935CE3/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 1PMT5935CE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5935CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5935CE3/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
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
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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