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Microchip Technology 1PMT5956A/TR7
- Part No.:
- 1PMT5956A/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5956A/TR7.pdf
- Description:
- DIODE ZENER 200V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,971
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Product details
Overview
1PMT5956A/TR7 from Microsemi is a 200 V, 3.0 W surface-mount Zener diode in the Powermite® package with 1.9 mA test current, 1200 Ω dynamic impedance at IZT, and 11.6 mA maximum Zener current (IZM). It features a full metallic bottom to prevent solder flux entrapment and integral locking tabs acting as heat sinks, used for overvoltage protection in DC power rails.
For engineers reviewing the 1PMT5956A/TR7 datasheet, 1PMT5956A/TR7 pinout, 1PMT5956A/TR7 application, or 1PMT5956A/TR7 equivalent, key selection criteria include Zener voltage tolerance (±5% standard), thermal resistance (30°C/W junction-to-tab), ESD rating (>16 kV HBM), reverse leakage (<8000 µA at 152 V), and compatibility with EIA-481 tape-and-reel automated assembly.
Technical Context
This Zener diode operates as a precision voltage reference and transient clamp in regulated power supplies and interface protection circuits. Its Powermite® package enables high thermal performance via direct tab conduction and low thermal resistance (30°C/W) from junction to TAB 1, supporting stable regulation under sustained 3.0 W dissipation when mounted on thermally optimized PCB copper.
The device exhibits tight knee characteristics (IZK = 0.25 mA, ZZK = 1200 Ω), enabling reliable low-current regulation down to microampere-level biasing. Reverse leakage remains below 8000 µA at VR = 152 V, ensuring minimal standby power loss in high-impedance sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 200 V ±5% at IZT = 1.9 mA - defines clamping threshold for overvoltage protection in 170–230 V DC systems |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - supports continuous operation with minimal heatsinking on 1 oz. copper pad |
| Dynamic Impedance (ZZT) | 1200 Ω at IZT - indicates moderate regulation stiffness; suitable for non-critical reference but not ultra-stable analog references |
| Thermal Resistance | 30°C/W junction-to-TAB 1 - enables predictable temperature rise under load; requires thermal pad connection to PCB ground plane |
| ESD Rating | >16 kV per HBM - provides robust handling during SMT assembly and board-level integration without additional protection |
| Reverse Leakage (IR) | <8000 µA at VR = 152 V - ensures low quiescent current in high-impedance voltage monitor circuits |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter useful regulation region; usable in low-power bias networks |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tabs; cathode designated by TAB 1; weight ≈ 0.016 g; DO-216 outline.
| 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 dissipation |
| Lead 2 | Anode | Standard anode terminal; connects to system ground or low-side return path in shunt regulator configuration |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, preventing post-assembly corrosion and intermetallic degradation |
| Integral heat-sink locking tabs | Provide mechanical anchoring and enhance thermal transfer from junction to PCB copper without external heatsinks |
| EIA-481 tape-and-reel packaging | Enables direct use with standard pick-and-place equipment; 3,000 pcs/reel (7″) supports high-volume automated assembly |
| Wide Zener voltage range (3.3–200 V) | Single package family covers industrial, telecom, and instrumentation rail voltages without redesigning layout or footprint |
Applications
| Industrial Power Supply Protection | Telecom Line Interface Clamp |
|---|---|
Use Scenario: Protecting 200 V DC intermediate bus in programmable logic controller (PLC) power modules against load dump transients. IC Role / Device Role / Timing Role: Shunt Zener clamp absorbing surge energy above 200 V while holding downstream regulators within safe input range. Use Value: Prevents damage to 24 V/48 V DC-DC converters by clamping transients up to 3.0 W peak without requiring series current limiting resistors. | Use Scenario: Overvoltage protection on -48 V telecom battery backup lines exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Cathode-grounded Zener providing bidirectional clamping (with series diode) to limit line voltage excursion beyond ±200 V. Use Value: Leverages 200 V VZ and >16 kV HBM rating to survive repeated surge events without parameter drift or failure. |
| Test Equipment Reference Stabilizer | Automated Test Fixture Bias Network |
Use Scenario: Providing stable 200 V reference for high-voltage calibration sources in benchtop multimeters and source-measure units. IC Role / Device Role / Timing Role: Precision Zener operating at IZT = 1.9 mA in constant-current bias circuit to generate fixed reference voltage. Use Value: Achieves ±5% initial tolerance and low tempco via thermal stabilization through TAB 1 conduction to metal chassis. | Use Scenario: Biasing photomultiplier tube (PMT) dynode chains requiring stable 200 V distribution across multiple stages. IC Role / Device Role / Timing Role: Low-leakage (IR < 8000 µA) Zener regulating individual dynode supply rails in high-impedance, low-noise measurement fixtures. Use Value: Maintains signal integrity by minimizing current noise injection into sensitive analog front-ends while delivering 11.6 mA max current per stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ200A | TVS diode (not Zener); 200 V standoff, 3.0 kW peak pulse power, higher clamping voltage (224 V) | Designed for transient suppression only; not suitable for DC regulation or reference use | Select only for surge-only protection where DC regulation is handled separately |
| 1N5388B | Through-hole 200 V Zener; 5 W rating; TO-204AA package; no integrated heat-sink tabs | Larger footprint; requires manual or wave soldering; higher thermal resistance (~50°C/W) | Choose when board space allows larger package and automated SMT is not required |
Compared with SMCJ200A and 1N5388B, the 1PMT5956A/TR7 uniquely combines 3.0 W DC power handling, surface-mount compatibility, and integrated thermal management in a DO-216 outline-enabling compact, high-reliability shunt regulation without layout or process changes.
Availability
1PMT5956A/TR7 is available at Aetrix Electronics and suitable for industrial power supply protection, telecom line interface clamping, test equipment reference stabilizers, and automated test fixture bias networks requiring stable component supply and consistent parametric performance across production lots.
Supply support for 1PMT5956A/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 semiconductor company specializing in high-reliability analog, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The Powermite® Zener diode product line delivers high-power surface-mount voltage regulation in miniature packages, designed specifically for space-constrained, thermally demanding applications where traditional through-hole Zeners cannot meet size or thermal goals.
FAQ
What is the Zener voltage tolerance for 1PMT5956A/TR7?
The 1PMT5956A/TR7 has a standard Zener voltage tolerance of ±5% at 200 V nominal, measured at IZT = 1.9 mA with TAB 1 temperature held at 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the base 1PMT5956A/TR7 part uses the ±5% grade.
Can 1PMT5956A/TR7 be used in DC voltage regulation circuits?
Yes, the 1PMT5956A/TR7 is designed for DC shunt regulation applications. With its 200 V Zener voltage, 3.0 W power rating, and stable knee characteristics (IZK = 0.25 mA), it maintains regulation across load currents up to 11.6 mA when properly thermally managed via TAB 1 connection to PCB copper.
What is the thermal resistance of 1PMT5956A/TR7 and how does it affect layout?
The 1PMT5956A/TR7 has a junction-to-TAB 1 thermal resistance of 30°C/W. To achieve rated 3.0 W dissipation, TAB 1 must be soldered to a minimum 100 mm² copper area (1 oz. thickness) with ≥2 thermal vias. Inadequate copper area raises junction temperature and reduces safe operating current.
Is 1PMT5956A/TR7 compatible with lead-free reflow processes?
Yes, the 1PMT5956A/TR7 Powermite® package is qualified for lead-free reflow per J-STD-020. Its molded construction and metallic bottom withstand peak temperatures up to 260°C. The full metallic bottom also prevents flux entrapment, reducing risk of voiding or corrosion during Pb-free soldering.
What does the "TR7" suffix indicate in 1PMT5956A/TR7?
The "TR7" suffix denotes EIA-481-compliant tape-and-reel packaging on a 7-inch reel containing 3,000 units. This format is optimized for high-speed pick-and-place assembly. The "A" in 1PMT5956A indicates the standard ±5% Zener voltage tolerance grade, distinguishing it from tighter-tolerance variants (e.g., 1PMT5956C).
1PMT5956A/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):
- 200 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 152 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
1PMT5956A/TR7 FAQ
1.How can I place an order for 1PMT5956A/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5956A/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 1PMT5956A/TR7 reliable?
The price and inventory of 1PMT5956A/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5956A/TR7 is usually 5 days.
3.What payment methods are accepted for 1PMT5956A/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5956A/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5956A/TR7?
1PMT5956A/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5956A/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 1PMT5956A/TR7?
For technical support, including 1PMT5956A/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5956A/TR7 requirements.
6.How does Aetrix verify that 1PMT5956A/TR7 is sourced from the original manufacturer or authorized distributors?
All 1PMT5956A/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 1PMT5956A/TR7 meets industry standards.
7.What is the process for return or replacement of 1PMT5956A/TR7?
All 1PMT5956A/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5956A/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 1PMT5956A/TR7 part is unused and in its original packaging.
Return procedure for 1PMT5956A/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5956A/TR7 Tags
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