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Microchip Technology 1PMT5935BE3/TR7
- Part No.:
- 1PMT5935BE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5935BE3/TR7.pdf
- Description:
- DIODE ZENER 27V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,392
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Product details
Overview
1PMT5935BE3/TR7 from Microsemi is a 27 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 13.9 mA test current (IZT), 23 Ω dynamic impedance (ZZT), 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 1PMT5935BE3/TR7 datasheet, 1PMT5935BE3/TR7 pinout, 1PMT5935BE3/TR7 application, or 1PMT5935BE3/TR7 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB1), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT placement equipment.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical stability during reflow soldering.
The device exhibits low reverse leakage (≤1 µA at VR = 20.6 V), high ESD robustness (>16 kV HBM), and stable zener characteristics over -55°C to +150°C junction temperature range - enabling reliable operation in thermally demanding embedded power management circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±5% at IZT = 13.9 mA - defines nominal regulation point for voltage reference design |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC power handling under defined thermal condition |
| Dynamic Impedance (ZZT) | 23 Ω at IZT - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | ≤1 µA at VR = 20.6 V - ensures minimal quiescent current in standby/clamp modes |
| Thermal Resistance | 30°C/W junction-to-TAB1 - quantifies thermal path efficiency for PCB copper pad heat sinking |
| ESD Rating | >16 kV per Human Body Model - provides robustness against electrostatic discharge during handling and assembly |
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; compliant with EIA-481 tape-and-reel standard (7″ reel: 3,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and electrical cathode connection; must be soldered to thermal pad for rated power dissipation |
| 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 compact footprint |
| Integral heat sink locking tab | Improves thermal transfer to PCB copper and prevents component rotation during soldering |
| Full metallic bottom | Eliminates solder flux entrapment risk and enhances thermal conductivity vs. plastic-bottom SMD packages |
| ESD robustness >16 kV HBM | Reduces need for external ESD protection in board-level transient suppression designs |
Applications
| Industrial Power Supply Monitoring | Automotive Body Control Module (BCM) Clamping |
|---|---|
Use Scenario: Monitors 24 V rail voltage in programmable logic controller (PLC) I/O modules to detect overvoltage faults. IC Role / Device Role / Timing Role: Zener clamping diode providing precise 27 V threshold for comparator input protection. Use Value: Maintains signal integrity by limiting input voltage swing to safe levels without loading the sensing node. | Use Scenario: Protects microcontroller GPIO pins from load-dump transients in 12 V automotive BCMs. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp absorbing energy spikes up to 3.0 W peak. Use Value: Prevents latch-up or damage during ISO 7637-2 Pulse 5a events due to low ZZT and high ESD rating. |
| Medical Equipment Reference Circuit | Telecom DC-DC Converter Feedback |
Use Scenario: Supplies stable 27 V reference for analog front-end calibration in portable ultrasound devices. IC Role / Device Role / Timing Role: Precision voltage reference with ±5% tolerance and low tempco drift over -40°C to +85°C ambient. Use Value: Enables repeatable ADC offset correction without requiring active regulation or trimming. | Use Scenario: Sets output voltage in isolated flyback converter feedback loop for telecom base station power supplies. IC Role / Device Role / Timing Role: Zener element in optocoupler-based secondary-side regulation network. Use Value: Delivers stable regulation despite wide input voltage variation and load step response requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ27A | TVS diode (unidirectional), 27 V standoff, 43.5 V clamping, 1500 W peak pulse power | Designed for transient surge suppression, not precision DC regulation | Select only for high-energy transient protection; not suitable as voltage reference |
| BZX84-C27 | SOT-23 package, 27 V ±5%, 300 mW power rating, 80 Ω ZZT, no metallic thermal tab | Limited thermal performance and lower power handling than 1PMT5935BE3/TR7 | Use where space is critical and power < 0.3 W; avoid in high-thermal-load applications |
Compared with SMCJ27A and BZX84-C27, the 1PMT5935BE3/TR7 uniquely combines 3.0 W DC power capability, 30°C/W thermal resistance, and precision Zener regulation - making it optimal for sustained voltage reference or clamping in thermally constrained industrial and automotive systems.
Availability
1PMT5935BE3/TR7 is available at Aetrix Electronics and suitable for industrial power monitoring, automotive body control module protection, and medical equipment reference circuits requiring stable component supply and long-term obsolescence management.
Supply support for 1PMT5935BE3/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 delivers high-power surface-mount voltage regulation with enhanced thermal performance and rugged packaging - designed specifically for mission-critical power management in harsh-environment electronics.
FAQ
What is the zener voltage tolerance for 1PMT5935BE3/TR7?
The 1PMT5935BE3/TR7 has a standard zener voltage tolerance of ±5% at 27 V, measured at IZT = 13.9 mA and TAB 1 temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the E3/TR7 variant uses the standard ±5% grade. This tolerance directly impacts voltage reference accuracy in precision analog circuits using the 1PMT5935BE3/TR7.
Can 1PMT5935BE3/TR7 be used in place of through-hole zener diodes?
Yes, the 1PMT5935BE3/TR7 replaces axial-lead DO-41 or DO-15 zeners in space-constrained designs, offering identical 27 V regulation with superior thermal performance via its metallic TAB 1. However, its Powermite® footprint requires specific PCB pad layout per MSC0995 mechanical drawings - unlike legacy through-hole parts, the 1PMT5935BE3/TR7 relies on thermal pad soldering for full 3.0 W rating.
What is the maximum reverse voltage before breakdown for 1PMT5935BE3/TR7?
The 1PMT5935BE3/TR7 begins regulated breakdown at its nominal zener voltage of 27 V, with knee behavior starting near 20.6 V (VR). At VR = 20.6 V, reverse leakage is guaranteed ≤1 µA. Operation below this voltage maintains high impedance; exceeding it initiates controlled conduction. This characteristic defines the usable clamping threshold in overvoltage protection circuits using the 1PMT5935BE3/TR7.
How does the Powermite® package improve thermal performance of 1PMT5935BE3/TR7?
The Powermite® package of the 1PMT5935BE3/TR7 features a full metallic bottom and integral locking tab that directly interfaces with PCB copper thermal pads, achieving 30°C/W junction-to-TAB1 thermal resistance. This is significantly better than standard SOD-123 or SOT-23 packages, allowing the 1PMT5935BE3/TR7 to sustain 3.0 W dissipation without external heatsinks - critical for compact industrial power modules.
Is 1PMT5935BE3/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5935BE3/TR7 is qualified for standard lead-free reflow profiles, including JEDEC J-STD-020-compliant peak temperatures up to 260°C. Its molded Powermite® package and metallic terminations withstand thermal cycling without delamination or solder joint failure. The full metallic bottom also promotes uniform heating and minimizes warpage risk during reflow - essential for high-yield manufacturing of boards using the 1PMT5935BE3/TR7.
1PMT5935BE3/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:
- ±5%
- 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
1PMT5935BE3/TR7 FAQ
1.How can I place an order for 1PMT5935BE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5935BE3/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 1PMT5935BE3/TR7 reliable?
The price and inventory of 1PMT5935BE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5935BE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5935BE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5935BE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5935BE3/TR7?
1PMT5935BE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5935BE3/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 1PMT5935BE3/TR7?
For technical support, including 1PMT5935BE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5935BE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5935BE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5935BE3/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 1PMT5935BE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5935BE3/TR7?
All 1PMT5935BE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5935BE3/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 1PMT5935BE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5935BE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5935BE3/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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Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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SMAZ12-13-F
Diodes Incorporated
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