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Microchip Technology 1PMT5940C/TR13
- Part No.:
- 1PMT5940C/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5940C/TR13.pdf
- Description:
- DIODE ZENER 43V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,358
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Product details
Overview
1PMT5940C/TR13 from Microsemi is a 43 V, ±1% tolerance Zener diode in the Powermite® surface-mount package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 53 Ω dynamic impedance at 8.7 mA test current and 950 µA max reverse leakage at 32.7 V. It serves as a precision voltage reference or overvoltage clamp in DC power rails of industrial control modules.
For engineers reviewing the 1PMT5940C/TR13 datasheet, 1PMT5940C/TR13 pinout, 1PMT5940C/TR13 application, or 1PMT5940C/TR13 equivalent, key selection criteria include its tight 1% voltage tolerance, low 53 Ω Zener impedance, ESD rating >16 kV HBM, full metallic bottom for flux-free soldering, and compatibility with automated SMT placement equipment.
Technical Context
This Zener diode operates in reverse breakdown mode to regulate or clamp voltage with minimal variation across temperature and current. Its thermal resistance of 30°C/W (junction-to-TAB1) enables stable operation up to +150°C junction temperature when mounted on a thermally adequate PCB pad.
The device uses a DO-216 molded package with cathode designated by TAB 1, requiring no orientation-specific mounting. The integral locking tab functions as both mechanical anchor and heat sink, improving thermal transfer without external heatsinking in moderate-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 43 V ±1% - precise regulation point for 42–44 V reference or clamping |
| Test Current | 8.7 mA - defined operating point for voltage measurement and impedance characterization |
| Dynamic Impedance | 53 Ω - low AC resistance ensures minimal voltage shift under varying load current |
| Max Reverse Leakage | 950 µA at 32.7 V - guarantees low standby power loss in high-impedance bias networks |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - supports robust transient energy absorption in compact SMT layout |
| ESD Rating | >16 kV HBM - eliminates need for external ESD protection in board-level handling and assembly |
| Thermal Resistance | 30°C/W (junction-to-TAB1) - enables predictable thermal design with direct PCB copper thermal pad coupling |
Pinout & Package
Package: Powermite® (DO-216), surface-mount, molded plastic with full metallic bottom and integral locking tab. Cathode is designated by TAB 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary heat-sinking terminal and voltage reference node; must be connected to ground or low-impedance return path |
| Lead 2 | Anode | Current entry point during forward conduction; reverse-biased during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Full metallic bottom | Eliminates solder flux entrapment during reflow, reducing post-assembly cleaning and void risk |
| Integral locking tab | Acts as mechanical anchor and thermal path-improves placement yield and thermal performance without added footprint |
| ±1% Zener tolerance (suffix C) | Enables tighter voltage margining in precision feedback loops without trimming resistors |
| ESD rating >16 kV HBM | Withstands human-body model discharge without parameter shift-critical for unshielded industrial I/O stages |
| Compatible with automatic insertion | Designed for pick-and-place accuracy per EIA-481 tape-and-reel standard (13-inch reel, 12,000 pcs) |
Applications
| Industrial Power Supply Monitoring | Automated Test Equipment (ATE) Reference |
|---|---|
Use Scenario: Monitoring 48 V DC bus in programmable logic controller (PLC) backplanes to trigger undervoltage/overvoltage alarms. IC Role / Device Role / Timing Role: Precision shunt regulator providing stable 43 V reference for comparator input. Use Value: ±1% tolerance ensures alarm thresholds remain within ±0.43 V across temperature, eliminating calibration drift. | Use Scenario: Generating a stable 43 V reference for D/A converter output stage calibration in benchtop multimeters. IC Role / Device Role / Timing Role: Low-impedance voltage clamp maintaining reference integrity under varying load transients. Use Value: 53 Ω dynamic impedance limits voltage deviation to <2.8 mV per 50 µA load change-meeting Class II accuracy requirements. |
| Motor Drive Gate Bias Clamp | Telecom Line Card Overvoltage Protection |
Use Scenario: Clamping gate drive voltage of 600 V IGBTs in HVAC inverter modules to prevent overdriving. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting gate-source voltage to 43 V during switching transients. Use Value: 3.0 W power rating absorbs 100 ns, 2 A surge pulses without degradation-extending gate driver IC lifetime. | Use Scenario: Protecting analog front-end circuitry on DSL line cards from lightning-induced surges on 48 V phantom power lines. IC Role / Device Role / Timing Role: Primary shunt protector diverting surge energy before it reaches op-amps and ADCs. Use Value: >16 kV HBM rating matches IEC 61000-4-2 Level 4 immunity requirements without supplemental TVS staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMF43A (ON Semiconductor) | 43 V, ±5%, 1.0 W, SOD-123FL package, 120 Ω ZZT | Lower power rating and higher impedance limit use to low-current bias networks only | Select when cost sensitivity outweighs precision and thermal performance needs |
| BZX84-C43 (Diodes Inc.) | 43 V, ±5%, 300 mW, SOT-23, 90 Ω ZZT, no metallic thermal tab | Lacks integral heat sink and flux-free bottom-unsuitable for high-reliability automated assembly | Choose only for space-constrained, low-power signal-level references where thermal margin is not critical |
Compared with SMF43A and BZX84-C43, the 1PMT5940C/TR13 delivers superior thermal management via its metallic TAB 1, tighter 1% tolerance for closed-loop stability, and lower 53 Ω impedance for reduced regulation error-making it the preferred choice for industrial-grade power monitoring and clamping where long-term parametric consistency matters.
Availability
1PMT5940C/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive gate bias circuits, telecom line card protection, and automated test equipment requiring stable component supply with guaranteed traceability and lifecycle continuity.
Supply support for 1PMT5940C/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 1PMT5940C/TR13-is engineered for ruggedized surface-mount voltage regulation in harsh environments where thermal stability, ESD resilience, and automated manufacturability are mandatory.
FAQ
What is the Zener voltage tolerance for 1PMT5940C/TR13?
The "C" suffix in 1PMT5940C/TR13 denotes ±1% Zener voltage tolerance at 43 V, measured at 8.7 mA test current and TAB 1 temperature of 30°C. This tighter tolerance enables high-accuracy voltage references without external trimming and is confirmed in the MSC0995.PDF datasheet's Note 1.
How is thermal management handled in the 1PMT5940C/TR13 package?
The 1PMT5940C/TR13 uses a Powermite® package with a full metallic bottom and integral locking tab acting as the cathode (TAB 1). Its specified thermal resistance is 30°C/W (junction-to-TAB1), meaning effective heat transfer requires direct connection of TAB 1 to a thermally robust PCB copper area-enabling 3.0 W dissipation at TAB 1 = 60°C.
Is the 1PMT5940C/TR13 compatible with standard SMT assembly processes?
Yes, the 1PMT5940C/TR13 is designed for compatibility with automated insertion equipment and conforms to EIA Standard 481 tape-and-reel packaging (13-inch reel, 12,000 pieces). Its full metallic bottom prevents solder flux entrapment during reflow, and the locking tab improves placement accuracy and mechanical retention-both verified in the MSC0995.PDF mechanical specifications.
What is the maximum reverse leakage current for 1PMT5940C/TR13?
The maximum reverse leakage current for 1PMT5940C/TR13 is 950 µA at a reverse voltage of 32.7 V, as specified in the Electrical Characteristics table of MSC0995.PDF. This value is measured at TL = 30°C and reflects worst-case leakage under sub-breakdown conditions-critical for low-power bias network design.
Does the 1PMT5940C/TR13 have ESD protection built-in?
Yes, the 1PMT5940C/TR13 has an ESD rating exceeding 16 kV per the Human Body Model (HBM), as stated in the FEATURES section of MSC0995.PDF. This intrinsic robustness eliminates the need for external ESD protection components in applications exposed to handling or system-level electrostatic events.
1PMT5940C/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):
- 43 V
- Tolerance:
- ±2%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 53 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 32.7 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
1PMT5940C/TR13 FAQ
1.How can I place an order for 1PMT5940C/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5940C/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 1PMT5940C/TR13 reliable?
The price and inventory of 1PMT5940C/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5940C/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5940C/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5940C/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5940C/TR13?
1PMT5940C/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5940C/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 1PMT5940C/TR13?
For technical support, including 1PMT5940C/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5940C/TR13 requirements.
6.How does Aetrix verify that 1PMT5940C/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5940C/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 1PMT5940C/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5940C/TR13?
All 1PMT5940C/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5940C/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 1PMT5940C/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5940C/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5940C/TR13 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MM5Z5V1ST1G
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