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Microchip Technology 1PMT5940AE3/TR13
- Part No.:
- 1PMT5940AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5940AE3/TR13.pdf
- Description:
- DIODE ZENER 43V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,157
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Product details
Overview
1PMT5940AE3/TR13 from Microsemi is a 43 V, ±5% tolerance Zener diode in 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 thermal resistance of 30°C/W junction-to-tab. It serves as a precision voltage reference or overvoltage clamp in DC power rails and analog signal conditioning circuits.
For engineers reviewing the 1PMT5940AE3/TR13 datasheet, 1PMT5940AE3/TR13 pinout, 1PMT5940AE3/TR13 application, or 1PMT5940AE3/TR13 equivalent, key selection criteria include zener voltage tolerance, power derating above 60°C, knee current (0.25 mA), reverse leakage (<950 µA at 1 V), and ESD rating (>16 kV HBM).
Technical Context
This device operates as a two-terminal voltage-regulating diode with sharp breakdown characteristics defined by its 43 V nominal zener voltage and 53 Ω dynamic impedance at IZT = 8.7 mA. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and eliminate solder flux entrapment during reflow assembly.
The 1PMT5940AE3/TR13 is specified for junction temperatures from –55°C to +150°C and exhibits low reverse leakage (≤950 µA at VR = 1 V) and tight voltage regulation across production lots. Its ESD robustness (>16 kV HBM) supports handling in automated SMT lines without additional protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±5% at IZT = 8.7 mA - defines stable clamping/reference point in regulated power supplies |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - sets maximum continuous DC load capability with thermal derating above 60°C |
| Dynamic Impedance (ZZT) | 53 Ω at IZT = 8.7 mA - determines voltage regulation sensitivity to current variation |
| Knee Current (IZK) | 0.25 mA - minimum current needed to enter stable zener region; critical for low-power biasing |
| Thermal Resistance (RθJ-TAB) | 30°C/W junction-to-tab - enables thermal design using tab as primary heat path to PCB copper |
| ESD Rating (HBM) | >16 kV - allows direct handling and placement without ESD mitigation in SMT line |
| Reverse Leakage (IR) | ≤950 µA at VR = 1 V - ensures minimal standby current in high-impedance sensing nodes |
Pinout & Package
Package: Powermite® surface-mount molded package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1; weight ≈ 0.016 g; DO-216 outline per mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TAB 1 | Cathode | Primary thermal and electrical connection point; must be soldered to copper pour for thermal management |
| Lead 2 | Anode | Standard anode terminal; mounted on PCB pad opposite TAB 1; no thermal function |
Key Features
| Feature | Design Value |
|---|---|
| Integral heat-sink locking tab | Direct thermal path from junction to PCB via TAB 1; reduces RθJ-PCB vs. standard SOD-123 |
| Full metallic bottom | Eliminates solder flux entrapment during reflow; improves solder joint reliability and voiding control |
| ESD robustness >16 kV HBM | Enables direct placement in automated insertion equipment without pre-screening or protective handling |
| 3.0 W power rating in SMT package | Delivers power-handling comparable to through-hole DO-41 devices in 50% smaller footprint |
Applications
| Industrial Power Supply Monitoring | Automotive Body Control Module (BCM) Clamping |
|---|---|
Use Scenario: Monitoring 48 V intermediate bus in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Zener diode acting as overvoltage clamp protecting downstream LDOs and microcontrollers. Use Value: 43 V breakdown voltage provides 10% margin above nominal 48 V rail while maintaining <53 Ω impedance for fast transient response. | Use Scenario: Protecting CAN transceiver supply pins against load-dump transients in BCM. IC Role / Device Role / Timing Role: Standby clamping element shunting surge energy to ground during ISO 7637-2 Pulse 5a events. Use Value: 3.0 W rating and 30°C/W thermal resistance allow sustained clamping without thermal runaway under repeated 100 ms pulses. |
| Medical Sensor Bias Reference | Telecom Line Card Voltage Regulation |
Use Scenario: Providing stable 43 V bias for photodiode amplifier in portable ultrasound front-end. IC Role / Device Role / Timing Role: Precision voltage reference establishing common-mode level for differential signal chain. Use Value: ±5% tolerance and low 0.25 mA knee current ensure accurate biasing even at microamp-level quiescent currents. | Use Scenario: Regulating auxiliary 43 V rail for optical transceiver laser driver ICs in access network equipment. IC Role / Device Role / Timing Role: Primary shunt regulator maintaining constant voltage despite varying load current up to 72 mA. Use Value: 53 Ω dynamic impedance limits output voltage deviation to <3.8 V over 0–72 mA load range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ43A | TVS diode (not Zener); 43 V standoff, 600 W peak pulse power, higher leakage (5 µA @ 34.4 V) | Designed for transient suppression only; not suitable for DC regulation or biasing | Select only for surge protection; avoid where stable DC voltage reference is required |
| BZX84-C43 | SOT-23 package; 43 V ±5%, 300 mW rating, 90 Ω ZZT, no metallic tab or locking feature | Limited to low-power biasing; cannot sustain 3.0 W continuous dissipation | Use only in space-constrained, low-current (<10 mA) applications where thermal performance is secondary |
Compared with SMCJ43A and BZX84-C43, the 1PMT5940AE3/TR13 uniquely combines 3.0 W DC power handling, low 53 Ω dynamic impedance, and integrated thermal tab-making it the only option among the three qualified for continuous shunt regulation in industrial power rails.
Availability
1PMT5940AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply monitoring, automotive body control module clamping, and medical sensor bias reference requiring stable component supply and long-term lifecycle continuity.
Supply support for 1PMT5940AE3/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 product line was designed to deliver through-hole–class power handling and thermal performance in surface-mount form factors for mission-critical power management and protection circuits.
FAQ
What is the zener voltage tolerance for 1PMT5940AE3/TR13?
The 1PMT5940AE3/TR13 has a nominal zener voltage of 43 V with a standard tolerance of ±5%, as confirmed in the MSC0995.PDF datasheet. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the E3 suffix indicates the standard ±5% version. This tolerance applies at IZT = 8.7 mA and TC = 30°C.
Can 1PMT5940AE3/TR13 be used in place of a through-hole DO-41 Zener diode?
Yes, the 1PMT5940AE3/TR13 delivers equivalent 3.0 W power dissipation and thermal performance to DO-41 packaged Zeners, but in a surface-mount Powermite® package. Its metallic tab and locking feature provide comparable thermal conduction to PCB copper, enabling drop-in replacement in many designs-provided layout accommodates the DO-216 footprint and tab soldering requirements.
What is the maximum reverse leakage current for 1PMT5940AE3/TR13?
The maximum reverse leakage current for 1PMT5940AE3/TR13 is 950 µA at VR = 1 V and TL = 30°C, per the Electrical Characteristics table in MSC0995.PDF. This value remains valid across the full operating temperature range (–55°C to +150°C), though actual leakage increases with temperature and must be verified at worst-case conditions in final design.
How does the Powermite® package improve thermal performance compared to standard SOD-123?
The Powermite® package of the 1PMT5940AE3/TR13 features a full metallic bottom and integral locking tab that directly connects the die's cathode to the PCB copper, achieving a junction-to-tab thermal resistance of 30°C/W. In contrast, standard SOD-123 packages rely on lead-frame conduction and exhibit >100°C/W thermal resistance-making the 1PMT5940AE3/TR13 significantly more effective for sustained 3.0 W operation.
Is 1PMT5940AE3/TR13 suitable for automotive applications?
Yes, the 1PMT5940AE3/TR13 meets automotive-grade requirements including junction temperature range (–55°C to +150°C), >16 kV HBM ESD rating, and robust construction for vibration and thermal cycling. It is commonly deployed in automotive body control modules for load-dump clamping and supply rail stabilization, provided board layout follows Microsemi's recommended mounting pad dimensions and thermal relief guidelines.
1PMT5940AE3/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:
- ±10%
- 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
1PMT5940AE3/TR13 FAQ
1.How can I place an order for 1PMT5940AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5940AE3/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 1PMT5940AE3/TR13 reliable?
The price and inventory of 1PMT5940AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5940AE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5940AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT5940AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT5940AE3/TR13?
1PMT5940AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5940AE3/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 1PMT5940AE3/TR13?
For technical support, including 1PMT5940AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5940AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5940AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5940AE3/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 1PMT5940AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5940AE3/TR13?
All 1PMT5940AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5940AE3/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 1PMT5940AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5940AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5940AE3/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
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Diodes Incorporated
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BZX84C3V3LT1G
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