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Microchip Technology 1PMT5951B/TR13
- Part No.:
- 1PMT5951B/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5951B/TR13.pdf
- Description:
- DIODE ZENER 120V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,277
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Product details
Overview
1PMT5951B/TR13 from Microsemi is a 120 V, ±5% tolerance Zener diode in the Powermite® surface-mount package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 380 Ω dynamic impedance at 3.1 mA test current and 4500 µA max reverse leakage at 91.2 V. It serves as a precision voltage reference or overvoltage clamp in industrial power supplies and DC-DC converter feedback networks.
For engineers reviewing the 1PMT5951B/TR13 datasheet, 1PMT5951B/TR13 pinout, 1PMT5951B/TR13 application, or 1PMT5951B/TR13 equivalent, key selection criteria include its 120 V nominal Zener voltage, 3.0 W thermal capability via metallic tab, DO-216 mechanical outline, ESD rating >16 kV HBM, and compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified current range. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction from junction to PCB and eliminate solder flux entrapment during reflow.
The device exhibits low reverse leakage (≤4500 µA at VR = 91.2 V), 30°C/W thermal resistance from junction to TAB 1, and stable Zener impedance (380 Ω) measured at 3.1 mA with 60 Hz AC superimposed on DC bias - confirming suitability for low-noise reference and transient suppression roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 120 V ±5% at IZT = 3.1 mA - defines clamping threshold in overvoltage protection circuits |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables robust operation without external heatsink in compact layouts |
| Dynamic Impedance (ZZT) | 380 Ω at IZT = 3.1 mA - indicates voltage regulation stability under varying load currents |
| Reverse Leakage (IR) | ≤4500 µA at VR = 91.2 V - ensures minimal standby power loss in high-impedance bias networks |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - supports predictable thermal design when mounted to copper pour or thermal pad |
| ESD Rating | >16 kV per Human Body Model - provides inherent handling robustness during board assembly |
Pinout & Package
Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat path and electrical connection point; must be soldered to thermal pad for rated 3.0 W dissipation |
| Lead 2 | Anode | Standard anode terminal; connects to ground or lower-potential node in Zener clamp configuration |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling in footprint smaller than DO-41 |
| Full metallic bottom | Eliminates solder flux entrapment risk and improves thermal transfer to PCB copper |
| Integral heat-sink locking tab | Acts as mechanical anchor and primary thermal interface - reduces junction-to-board thermal resistance |
| ESD robustness | >16 kV HBM rating allows safe handling without special ESD controls during manufacturing |
Applications
| Industrial Power Supply Clamping | DC-DC Converter Feedback Reference |
|---|---|
Use Scenario: Protecting control ICs from transient overvoltage spikes on 110–130 V DC bus lines in motor drives and PLC modules. IC Role / Device Role / Timing Role: Zener clamping element shunting excess energy to ground when bus voltage exceeds 120 V. Use Value: 3.0 W rating and 30°C/W thermal resistance allow sustained clamping without derating in enclosed enclosures. | Use Scenario: Providing stable 120 V reference for optocoupler-based feedback in isolated 48 V to 120 V flyback converters. IC Role / Device Role / Timing Role: Precision voltage reference defining upper output limit via resistor divider network. Use Value: ±5% VZ tolerance and low 380 Ω ZZT ensure tight output regulation despite line/load variation. |
| Automated Test Equipment Protection | Telecom Line Interface Surge Suppression |
Use Scenario: Safeguarding analog front-end inputs of ATE systems exposed to accidental 100+ V misconnections. IC Role / Device Role / Timing Role: Fast-acting overvoltage limiter placed before precision ADC input stages. Use Value: Low 4500 µA reverse leakage preserves signal integrity in high-impedance sensor interfaces. | Use Scenario: Secondary-level surge protection on -48 V telecom battery backup lines subject to lightning-induced transients. IC Role / Device Role / Timing Role: Standby clamping device activated only during overvoltage events above nominal rail. Use Value: >16 kV HBM ESD rating ensures reliability during field maintenance and hot-swap operations. |
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 120 V nominal Zener voltage, but DO-204AL (DO-41) through-hole package; 5 W rating; higher 1000 Ω ZZT | Requires manual or wave soldering; unsuitable for high-density SMT layouts | Select 1N5375B only if through-hole assembly is mandated and higher power margin is needed |
| BZX84-C120 | SOT-23 package; 120 V ±5%; 300 mW rating; 1000 Ω ZZT; no metallic thermal tab | Limited to low-power bias/reference use; cannot sustain 3.0 W clamping duty | Choose BZX84-C120 only for space-constrained, low-current reference applications where thermal performance is secondary |
Compared with 1N5375B and BZX84-C120, the 1PMT5951B/TR13 uniquely delivers 3.0 W SMT-compatible clamping with metallic-tab thermal management - making it the only option among the three suitable for sustained high-energy transient suppression in automated production environments.
Availability
1PMT5951B/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, DC-DC converter feedback networks, and automated test equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1PMT5951B/TR13 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 the 1PMT5951B/TR13, was engineered to deliver high-power surface-mount voltage regulation with superior thermal performance and assembly robustness for mission-critical power systems.
FAQ
What is the Zener voltage tolerance for 1PMT5951B/TR13?
The 1PMT5951B/TR13 has a standard Zener voltage tolerance of ±5% at 120 V nominal, measured at 3.1 mA test current with TAB 1 held at 30°C. Tighter tolerances (±2%, ±1%) are available with suffixes C and D respectively, but the base part number 1PMT5951B/TR13 specifies ±5%.
How is thermal performance defined for 1PMT5951B/TR13?
The 1PMT5951B/TR13 has a junction-to-TAB 1 thermal resistance of 30°C/W, enabling 3.0 W DC power dissipation when TAB 1 is maintained at 60°C. Effective thermal design requires soldering TAB 1 to a minimum 100 mm² copper pad with ≥2 thermal vias to internal ground planes.
Is 1PMT5951B/TR13 compatible with lead-free reflow processes?
Yes, the 1PMT5951B/TR13 Powermite® package is qualified for standard lead-free reflow profiles (JEDEC J-STD-020), including peak temperatures up to 260°C. Its full metallic bottom and molded construction prevent delamination or voiding during thermal cycling.
What does the "TR13" suffix indicate in 1PMT5951B/TR13?
The "TR13" suffix denotes tape-and-reel packaging per EIA-481 standard on a 13-inch reel containing 12,000 units. This format supports high-speed pick-and-place assembly and is distinct from the 7-inch reel (TR7) variant holding 3,000 units.
Can 1PMT5951B/TR13 be used in place of axial-lead Zeners like 1N4764A?
No - while both are 120 V Zeners, the 1PMT5951B/TR13 is a surface-mount Powermite® device with metallic thermal tab and DO-216 outline, whereas 1N4764A is axial-lead DO-41. Direct substitution requires PCB layout revision and thermal redesign due to fundamental package and thermal path differences.
1PMT5951B/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 120 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 380 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 91.2 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
1PMT5951B/TR13 FAQ
1.How can I place an order for 1PMT5951B/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5951B/TR13 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 1PMT5951B/TR13 reliable?
The price and inventory of 1PMT5951B/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5951B/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5951B/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5951B/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5951B/TR13?
1PMT5951B/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5951B/TR13 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 1PMT5951B/TR13?
For technical support, including 1PMT5951B/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5951B/TR13 requirements.
6.How does Aetrix verify that 1PMT5951B/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5951B/TR13 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 1PMT5951B/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5951B/TR13?
All 1PMT5951B/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5951B/TR13, 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 1PMT5951B/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5951B/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5951B/TR13 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
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SMAZ12-13-F
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