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Microchip Technology 1PMT5949C/TR7
- Part No.:
- 1PMT5949C/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5949C/TR7.pdf
- Description:
- DIODE ZENER 100V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,156
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Product details
Overview
1PMT5949C/TR7 from Microsemi is a 100 V, ±1% 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 industrial power supply feedback loops.
For engineers reviewing the 1PMT5949C/TR7 datasheet, 1PMT5949C/TR7 pinout, 1PMT5949C/TR7 application, or 1PMT5949C/TR7 equivalent, key selection criteria include its tight 1% voltage tolerance, ESD rating >16 kV HBM, full metallic bottom for flux-free soldering, thermal resistance of 30°C/W (junction-to-TAB1), 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 100 V at 3.7 mA (IZT), exhibiting 250 Ω dynamic impedance (ZZT) and 3100 µA maximum reverse leakage (IR) at 76 V (VR). Its junction-to-TAB1 thermal resistance is 30°C/W, enabling stable regulation under sustained 3.0 W power dissipation when mounted on a thermally adequate PCB pad.
The Powermite® package features a full metallic bottom and integral locking tab acting as a heat sink, supporting automatic insertion and eliminating solder flux entrapment. Cathode is designated by TAB 1, and mechanical mounting orientation is unrestricted per specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±1% at IZT = 3.7 mA - enables precise voltage clamping or reference in high-voltage feedback networks |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - supports robust operation in compact industrial power stages without forced cooling |
| Dynamic Impedance (ZZT) | 250 Ω at IZT - ensures low voltage deviation under small-signal current variations in regulation circuits |
| Reverse Leakage (IR) | ≤3100 µA at VR = 76 V - maintains low standby loss in high-impedance bias or protection paths |
| Thermal Resistance | 30°C/W (junction-to-TAB1) - allows accurate thermal design when TAB 1 is connected to copper pour or heatsink |
| ESD Rating | >16 kV per HBM - provides inherent handling robustness during SMT assembly and field operation |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral cathode locking tab (TAB 1). Cathode is electrically and thermally connected to TAB 1; anode is the opposing terminal. Mounting orientation is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Opposing Terminal | Anode | Standard anode connection; no thermal function; routed as signal or bias node in circuit |
Key Features
| Feature | Design Value |
|---|---|
| ±1% Zener voltage tolerance (suffix C) | Enables high-accuracy voltage references without external trimming in 100 V systems |
| Full metallic bottom | Eliminates solder flux entrapment during reflow, improving long-term reliability and void-free solder joints |
| Integral locking tab (TAB 1) | Acts as both cathode terminal and passive heatsink, reducing thermal resistance by direct metal-to-PCB conduction |
| EIA-481 tape-and-reel packaging | Supports high-speed pick-and-place assembly with 3,000 units per 7-inch reel |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters where primary-side sensing requires stable 100 V reference. IC Role / Device Role / Timing Role: Precision Zener reference diode providing error amplifier input voltage in TL431-based or discrete op-amp feedback networks. Use Value: ±1% tolerance and low ZZT ensure <±0.5 V output variation across line/load/temperature in 48–72 VDC input systems. | Use Scenario: Clamping transient overvoltage on 85–100 V DC bus lines in motor drives or telecom power systems. IC Role / Device Role / Timing Role: Shunt overvoltage protector diverting surge current to ground before downstream MOSFETs or controllers are damaged. Use Value: 3.0 W power rating and 30°C/W thermal resistance allow safe absorption of 100 V × 30 mA surges for >100 ms without derating. |
| High-Voltage Bias Network | ESD-Sensitive Interface Protection |
Use Scenario: Generating stable bias voltage for gate drivers or optocouplers in high-side switch circuits operating near 100 V rails. IC Role / Device Role / Timing Role: Low-leakage (≤3100 µA) Zener source supplying regulated bias to isolated driver ICs. Use Value: Tight 1% tolerance ensures consistent gate drive margin across temperature, preventing unintended turn-on in SiC/GaN half-bridges. | Use Scenario: Protecting analog sensor inputs or communication lines exposed to >15 kV ESD events in factory automation equipment. IC Role / Device Role / Timing Role: Primary shunt ESD clamp with >16 kV HBM rating, placed upstream of TVS arrays or interface ICs. Use Value: Metallic-bottom construction improves grounding integrity, while 100 V standoff prevents false triggering during normal 24/48 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5375B | Same 100 V nominal, ±5% tolerance, DO-204AL package, 5 W rating but higher thermal resistance (50°C/W) | Requires larger PCB pad or heatsinking for equivalent 3 W operation; not surface-mount optimized | Select only if through-hole assembly or higher power headroom is required |
| BZX85C100 | 100 V, ±5%, DO-41 package, 1.3 W rating, no metallic bottom or locking tab | Limited to low-power biasing; unsuitable for 3 W clamping or automated SMT | Use only in cost-sensitive, low-power legacy designs with manual assembly |
Compared with 1N5375B and BZX85C100, the 1PMT5949C/TR7 delivers superior thermal performance (30°C/W vs. ≥50°C/W), SMT process compatibility, and tighter 1% tolerance-making it the preferred choice for modern industrial power modules requiring repeatable 100 V regulation under continuous load.
Availability
1PMT5949C/TR7 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and high-voltage bias networks requiring stable component supply, consistent parametric performance, and EIA-481 tape-and-reel compatibility.
Supply support for 1PMT5949C/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 family-including 1PMT5949C/TR7-is engineered for high-power-density surface-mount voltage regulation and clamping in space-constrained, thermally demanding environments such as industrial power converters and motor control systems.
FAQ
What is the zener voltage tolerance of the 1PMT5949C/TR7?
The 1PMT5949C/TR7 has a nominal zener voltage of 100 V with a ±1% tolerance, indicated by the "C" suffix in the part number. This tight tolerance is verified at IZT = 3.7 mA and TAB 1 temperature of 30°C, making it suitable for precision voltage reference applications where standard ±5% Zeners would introduce unacceptable regulation error.
How is thermal management handled for the 1PMT5949C/TR7 in high-power operation?
The 1PMT5949C/TR7 achieves 3.0 W power dissipation capability via its Powermite® package, which uses TAB 1 as both cathode and thermal path. With a specified junction-to-TAB1 thermal resistance of 30°C/W, effective thermal management requires soldering TAB 1 to a minimum 100 mm² copper pad (2 oz Cu) to maintain junction temperature within -55°C to +150°C limits during continuous operation.
Is the 1PMT5949C/TR7 compatible with automated SMT assembly processes?
Yes, the 1PMT5949C/TR7 is fully compatible with automated SMT assembly. It is supplied in EIA-481 tape-and-reel format (3,000 units per 7-inch reel), features a unique locking tab that stabilizes placement, and has a full metallic bottom that prevents solder flux entrapment-reducing defects and improving first-pass yield in high-volume manufacturing.
What does the "TR7" suffix indicate in 1PMT5949C/TR7?
The "TR7" suffix denotes tape-and-reel packaging per EIA-481 standard on a 7-inch reel containing 3,000 units. This distinguishes it from bulk or ammo-pack variants and confirms compatibility with standard pick-and-place equipment used in industrial electronics manufacturing.
Can the 1PMT5949C/TR7 replace older through-hole Zener diodes like 1N5375B in existing designs?
The 1PMT5949C/TR7 can serve as a functional replacement for 1N5375B in many applications due to matching 100 V nominal voltage, but it is not a drop-in mechanical replacement. Its Powermite® footprint differs from DO-204AL, requiring PCB layout revision. However, its lower thermal resistance (30°C/W vs. 50°C/W) and SMT compatibility often justify redesign for improved reliability and manufacturability.
1PMT5949C/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
1PMT5949C/TR7 FAQ
1.How can I place an order for 1PMT5949C/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5949C/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 1PMT5949C/TR7 reliable?
The price and inventory of 1PMT5949C/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5949C/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5949C/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5949C/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5949C/TR7?
1PMT5949C/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5949C/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 1PMT5949C/TR7?
For technical support, including 1PMT5949C/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5949C/TR7 requirements.
6.How does Aetrix verify that 1PMT5949C/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5949C/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 1PMT5949C/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5949C/TR7?
All 1PMT5949C/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5949C/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 1PMT5949C/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5949C/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5949C/TR7 Tags
-
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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