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Microchip Technology 1PMT5949E3/TR7
- Part No.:
- 1PMT5949E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5949E3/TR7.pdf
- Description:
- DIODE ZENER 100V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,507
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Product details
Overview
1PMT5949E3/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. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5949E3/TR7 datasheet, 1PMT5949E3/TR7 pinout, 1PMT5949E3/TR7 application, or 1PMT5949E3/TR7 equivalent, key selection criteria include zener voltage accuracy, thermal resistance (30°C/W junction-to-TAB), ESD robustness (>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 (≤3100 µA at VR = 76 V) and a defined knee region (IZK = 0.25 mA, ZZK = 800 Ω), enabling stable clamping performance even under light-load conditions typical in sensor biasing and reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at IZT = 3.7 mA - defines nominal clamping threshold for overvoltage protection |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous power handling with heatsink tab |
| Dynamic Impedance (ZZT) | 250 Ω at IZT = 3.7 mA - indicates voltage regulation stiffness under small-signal AC perturbation |
| Reverse Leakage (IR) | ≤3100 µA at VR = 76 V - ensures minimal standby current in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB1 - enables thermal design using TAB as primary heat path to PCB copper |
| ESD Rating | >16 kV per Human Body Model - supports robustness in handling and board-level ESD events |
| Knee Current (IZK) | 0.25 mA - minimum current required to enter regulated breakdown region |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral locking tab; cathode designated by TAB 1; weight ≈ 0.016 g; mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary cathode terminal and thermal interface - must be connected to PCB copper pour for thermal management |
| Lead 2 | Anode | Standard anode connection - routed to ground or low-impedance return path in clamp configuration |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated SMT assembly while delivering 3.0 W power handling in compact footprint |
| Integral heat sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB |
| Full metallic bottom | Eliminates solder flux entrapment risk during reflow, improving long-term reliability |
| ESD rating >16 kV HBM | Reduces need for external ESD protection in front-end power monitoring circuits |
| Low knee impedance (800 Ω) | Ensures stable regulation onset at low currents, critical for battery-powered sensor references |
Applications
| Industrial Power Monitoring | Automotive ECUs |
|---|---|
Use Scenario: Monitoring 12–48 V DC bus voltage in programmable logic controllers with microcontroller ADC input protection. IC Role / Device Role / Timing Role: Zener clamp protecting ADC input from transients exceeding 100 V. Use Value: Prevents ADC saturation and latch-up using precise 100 V breakdown with ≤3100 µA leakage at 76 V. | Use Scenario: Overvoltage suppression on CAN transceiver supply rail during load-dump events. IC Role / Device Role / Timing Role: Standby shunt regulator absorbing surge energy above 76 V. Use Value: Maintains rail integrity with 3.0 W dissipation capability and 30°C/W thermal resistance to TAB. |
| Medical Sensor Biasing | Telecom Power Sequencing |
Use Scenario: Providing stable 100 V bias for photomultiplier tube (PMT) anode chains in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference with tight ±5% tolerance and low knee current (0.25 mA). Use Value: Enables accurate gain calibration without requiring active regulation circuitry. | Use Scenario: Voltage supervision and sequencing control in multi-rail telecom line cards. IC Role / Device Role / Timing Role: Threshold detector triggering reset logic when main 48 V rail exceeds safe limit. Use Value: Delivers fast response via low dynamic impedance (250 Ω) and high ESD immunity (>16 kV HBM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5365B | Same 100 V nominal voltage but DO-41 through-hole package; 5 W rating; higher thermal resistance (~65°C/W) | Requires manual or wave soldering; unsuitable for high-density SMT layouts | Select only if through-hole assembly is mandated and higher power margin is needed |
| BZX84-C100 | SOT-23 package; 300 mW rating; ±5% tolerance; 100 Ω dynamic impedance at 5 mA | Limited to low-power signal-level clamping; cannot sustain 3.0 W dissipation | Choose for space-constrained signal conditioning where power stress is negligible |
Compared with 1N5365B and BZX84-C100, the 1PMT5949E3/TR7 uniquely combines SMT compatibility, 3.0 W power handling, and low thermal resistance (30°C/W) - making it optimal for high-reliability industrial clamping where thermal management and automated assembly are critical.
Availability
1PMT5949E3/TR7 is available at Aetrix Electronics and suitable for industrial power monitoring, automotive ECUs, medical sensor biasing, and telecom power sequencing requiring stable component supply and long-lifecycle support.
Supply support for 1PMT5949E3/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 designed for ruggedized surface-mount voltage regulation in harsh-environment power systems where thermal performance, ESD resilience, and automated manufacturability are essential.
FAQ
What is the zener voltage tolerance for 1PMT5949E3/TR7?
The 1PMT5949E3/TR7 has a standard zener voltage tolerance of ±5% at 100 V nominal, measured at IZT = 3.7 mA with TAB 1 temperature held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the base 1PMT5949E3/TR7 uses the standard ±5% grade.
How is thermal management handled in the 1PMT5949E3/TR7 package?
The 1PMT5949E3/TR7 uses its metallic TAB 1 as the primary thermal conduction path, with a specified junction-to-TAB thermal resistance of 30°C/W. Effective thermal design requires connecting TAB 1 to a large PCB copper area to dissipate up to 3.0 W at TAB temperature ≤60°C - no external heatsink is needed if PCB layout provides adequate copper mass.
Can 1PMT5949E3/TR7 be used in place of through-hole Zeners like 1N5365B?
No - the 1PMT5949E3/TR7 is not a drop-in replacement for 1N5365B due to different packages (Powermite® SMT vs. DO-41 through-hole), pinout, and thermal interface. While both have 100 V nominal zener voltage, the 1PMT5949E3/TR7 requires SMT reflow and relies on TAB 1 for thermal transfer, whereas 1N5365B uses lead-frame conduction.
What is the maximum reverse leakage current for 1PMT5949E3/TR7?
The maximum reverse leakage current for 1PMT5949E3/TR7 is 3100 µA at VR = 76 V, as specified in the Electrical Characteristics table. This value reflects worst-case leakage under rated reverse voltage and ensures predictable clamping behavior in high-impedance bias networks.
Is 1PMT5949E3/TR7 compatible with automated SMT placement equipment?
Yes - the 1PMT5949E3/TR7 is explicitly designed for compatibility with automatic insertion equipment. Its Powermite® package features a unique locking tab and full metallic bottom that prevent solder flux entrapment and ensure stable positioning during pick-and-place and reflow processes.
1PMT5949E3/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:
- ±20%
- 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
1PMT5949E3/TR7 FAQ
1.How can I place an order for 1PMT5949E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5949E3/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 1PMT5949E3/TR7 reliable?
The price and inventory of 1PMT5949E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5949E3/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5949E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5949E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5949E3/TR7?
1PMT5949E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5949E3/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 1PMT5949E3/TR7?
For technical support, including 1PMT5949E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5949E3/TR7 requirements.
6.How does Aetrix verify that 1PMT5949E3/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5949E3/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 1PMT5949E3/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5949E3/TR7?
All 1PMT5949E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5949E3/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 1PMT5949E3/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5949E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5949E3/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
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BZT52C3V6LP-7
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SMAZ12-13-F
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