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Microchip Technology 1PMT5949CE3/TR7
- Part No.:
- 1PMT5949CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5949CE3/TR7.pdf
- Description:
- DIODE ZENER 100V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,784
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Product details
Overview
1PMT5949CE3/TR7 from Microsemi is a 100 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 250 Ω dynamic impedance at 3.7 mA test current and 3100 µA max reverse leakage at 76 V, used for precision voltage regulation and overvoltage protection in compact DC power rails.
For engineers reviewing the 1PMT5949CE3/TR7 datasheet, 1PMT5949CE3/TR7 pinout, 1PMT5949CE3/TR7 application, or 1PMT5949CE3/TR7 equivalent, key selection criteria include zener voltage tolerance (±5%), thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low reverse leakage, and compatibility with automated SMT assembly per EIA-481 tape-and-reel packaging.
Technical Context
This Zener diode operates as a two-terminal voltage reference device with cathode designated by TAB 1, requiring no external biasing circuitry. Its full metallic bottom and integral heat sink locking tab enable efficient thermal conduction to the PCB pad while eliminating solder flux entrapment during reflow.
The device is characterized at TL = 30°C with VZ measured 20 seconds after applying DC current; dynamic impedance is derived using 60 Hz RMS AC current equal to 10% of IZT. It supports stable regulation across -55°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 100 V ±5% - precise clamping threshold for 76 V to 100 V operating range |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without heatsink |
| Test Current | 3.7 mA - defines nominal operating point for voltage specification and impedance measurement |
| Dynamic Impedance | 250 Ω at 3.7 mA - determines regulation stiffness under varying load current |
| Reverse Leakage | 3100 µA max at 76 V - sets minimum holding voltage before breakdown onset |
| Thermal Resistance | 30°C/W junction-to-TAB - quantifies thermal path efficiency to PCB copper |
| ESD Rating | >16 kV HBM - ensures robustness against handling and system-level electrostatic discharge |
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; compatible with EIA-481 tape-and-reel (7″ reel: 3,000 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat transfer path and voltage reference node; must be connected to ground or low-impedance return |
| Lead 2 | Anode | Current entry point during forward bias; reverse-biased operation defines zener regulation function |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and eliminates through-hole assembly; saves board area vs. DO-41/DO-15 |
| Full metallic bottom | Prevents solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path to PCB copper pour |
| ESD robustness | >16 kV Human Body Model rating reduces risk of field failure in handling and end-use environments |
Applications
| Industrial Power Supply Regulation | Automotive ECUs |
|---|---|
Use Scenario: Stabilizing reference voltage for feedback loops in isolated DC-DC converters delivering 12–48 V output. IC Role / Device Role / Timing Role: Zener diode providing fixed 100 V clamp to protect error amplifier input and define overvoltage trip threshold. Use Value: Maintains regulation accuracy within ±5% across temperature, enabling compliance with IEC 61000-4-5 surge immunity requirements. | Use Scenario: Overvoltage protection on 12 V battery-supplied microcontroller supply rails subject to load-dump transients. IC Role / Device Role / Timing Role: Shunt regulator clamping bus voltage to 100 V during ISO 7637-2 Pulse 5a events. Use Value: Withstands 3.0 W peak pulse energy without degradation, meeting AEC-Q101 stress test conditions. |
| Telecom Line Card Protection | Medical Diagnostic Equipment |
Use Scenario: Secondary surge suppression stage following TVS diodes on Ethernet PHY power lines. IC Role / Device Role / Timing Role: Precision voltage clamp limiting residual overshoot to ≤100 V after primary transient absorption. Use Value: Low 250 Ω dynamic impedance ensures minimal voltage excursion during fast-rising surges (tr < 1 ns). | Use Scenario: Reference voltage source for analog front-end ADC biasing in portable ultrasound imaging systems. IC Role / Device Role / Timing Role: Stable 100 V Zener reference supplying bias to high-voltage op-amp stages. Use Value: Tight ±5% tolerance and low 3100 µA leakage at 76 V ensure consistent gain calibration across production units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5949BRLG | Same 100 V ±5%, but DO-41 through-hole package; higher thermal resistance (50°C/W) | Requires manual or wave-solder assembly; unsuitable for high-density SMT layouts | Select when legacy through-hole design or higher single-pulse surge margin is required |
| BZX84-C100LT1G | 100 V ±5%, SOT-23 package; lower 350 mW power rating and 600 Ω dynamic impedance | Limited to low-power signal-level clamping; cannot sustain 3.0 W continuous dissipation | Select only for space-constrained signal conditioning where power handling is secondary |
Compared with 1N5949BRLG and BZX84-C100LT1G, the 1PMT5949CE3/TR7 uniquely combines 3.0 W SMT power handling, 30°C/W thermal resistance, and EIA-481 tape-and-reel compatibility-making it the only option for automated production of industrial-grade 100 V shunt regulators.
Availability
1PMT5949CE3/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, telecom line cards, and medical diagnostic equipment requiring stable component supply and full traceability.
Supply support for 1PMT5949CE3/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 RF solutions for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line was designed specifically for high-power-density surface-mount voltage regulation and transient suppression in mission-critical power systems where thermal performance and assembly reliability are paramount.
FAQ
What is the maximum power dissipation rating for the 1PMT5949CE3/TR7?
The 1PMT5949CE3/TR7 is rated for 3.0 W DC power dissipation when TAB 1 is maintained at 60°C. This rating assumes proper PCB copper area for heat spreading and accounts for voltage derating at elevated temperatures per Microsemi's thermal guidelines in MSC0995.PDF.
How is the cathode identified on the 1PMT5949CE3/TR7 package?
The cathode of the 1PMT5949CE3/TR7 is designated by TAB 1-the large metallic tab on the package bottom. This tab serves as both the cathode terminal and primary thermal conduction path to the PCB, and must be electrically connected to the intended reference potential.
What is the reverse leakage current specification for the 1PMT5949CE3/TR7?
The 1PMT5949CE3/TR7 has a maximum reverse leakage current of 3100 µA at 76 V (VR = 0.76 × VZ), measured at TL = 30°C. This parameter defines the upper bound of off-state current before entering the regulated breakdown region.
Is the 1PMT5949CE3/TR7 compatible with standard SMT reflow processes?
Yes, the 1PMT5949CE3/TR7 is qualified for standard lead-free reflow profiles per J-STD-020. Its Powermite® package features a full metallic bottom that prevents solder flux entrapment, ensuring reliable void-free solder joints during automated assembly.
What does the 'C' suffix in 1PMT5949CE3/TR7 indicate?
The 'C' suffix in 1PMT5949CE3/TR7 denotes ±2% zener voltage tolerance, tighter than the standard ±5% version. The 'E3/TR7' indicates EIA-481 compliant tape-and-reel packaging on a 7-inch reel containing 3,000 units.
1PMT5949CE3/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):
- 100 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 76 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
1PMT5949CE3/TR7 FAQ
1.How can I place an order for 1PMT5949CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5949CE3/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 1PMT5949CE3/TR7 reliable?
The price and inventory of 1PMT5949CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5949CE3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5949CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5949CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5949CE3/TR7?
1PMT5949CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5949CE3/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 1PMT5949CE3/TR7?
For technical support, including 1PMT5949CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5949CE3/TR7 requirements.
6.How does Aetrix verify that 1PMT5949CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5949CE3/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 1PMT5949CE3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5949CE3/TR7?
All 1PMT5949CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5949CE3/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 1PMT5949CE3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5949CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5949CE3/TR7 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
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
-
SMAZ12-13-F
Diodes Incorporated
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