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Microchip Technology 1PMT5937AE3/TR13
- Part No.:
- 1PMT5937AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT5937AE3/TR13.pdf
- Description:
- DIODE ZENER 33V 3W DO216AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,779
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Product details
Overview
1PMT5937AE3/TR13 from Microsemi is a 33 V, ±5% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 11.4 mA test current, 33 Ω dynamic impedance, and <1 µA reverse leakage at 25.1 V. It serves as a precision voltage reference or overvoltage clamp in power supply regulation circuits.
For engineers reviewing the 1PMT5937AE3/TR13 datasheet, 1PMT5937AE3/TR13 pinout, 1PMT5937AE3/TR13 application, or 1PMT5937AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), ESD rating (>16 kV HBM), low knee impedance, and compatibility with automated SMT assembly per EIA-481 tape-and-reel packaging.
Technical Context
This device operates as a silicon planar Zener diode optimized for stable voltage regulation under varying load and temperature conditions. Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical retention during reflow.
Electrical behavior is defined at TL = 30°C with IZT = 11.4 mA; Zener voltage drift versus current deviation follows Microsemi Note 202. Reverse leakage remains ≤1 µA up to VR = 25.1 V, and dynamic impedance is measured using 60 Hz AC superimposed on DC bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 33 V ±5% - precise clamping threshold for 24–36 V rail protection |
| Power Dissipation | 3.0 W at TAB 1 = 60°C - enables high-energy transient suppression without external heatsink |
| Test Current | 11.4 mA - standardized bias point for guaranteed VZ specification compliance |
| Dynamic Impedance | 33 Ω - low AC impedance ensures minimal output voltage variation under dynamic load changes |
| Reverse Leakage | ≤1 µA at 25.1 V - negligible standby current in high-impedance sensing or battery-backed circuits |
| Thermal Resistance | 30°C/W junction-to-TAB - supports reliable operation up to 150°C junction temperature with proper PCB copper area |
| ESD Rating | >16 kV HBM - robust handling in automated manufacturing and field-deployed systems |
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 cathode connection; must be soldered to thermal pad for rated 3.0 W operation |
| Lead 2 | Anode | Standard anode terminal; mounted opposite TAB 1, compatible with standard DO-216 footprint |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount Powermite® package | Enables automated placement and reflow while delivering 3.0 W power handling comparable to larger through-hole Zeners |
| Full metallic bottom | Eliminates solder flux entrapment risk and improves thermal transfer efficiency during assembly |
| Integral heat-sink locking tab | Provides mechanical anchoring and direct thermal conduction path from junction to PCB copper |
| ESD robustness | >16 kV Human Body Model rating ensures reliability in handling and end-use environments |
| Tight voltage tolerance option | ±2% (suffix C) and ±1% (suffix D) available for high-accuracy reference applications |
Applications
| Industrial Power Supply Regulation | Automotive ECUs |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback or forward converter secondary-side regulation. IC Role / Device Role / Timing Role: Precision Zener reference for optocoupler-based feedback loop. Use Value: 33 V clamping with 33 Ω dynamic impedance minimizes output ripple and improves load regulation accuracy. | Use Scenario: Overvoltage protection on 24 V battery-supplied microcontroller I/O lines. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping induced spikes to safe levels. Use Value: >16 kV HBM ESD rating and 3.0 W surge capability protect against ISO 7637-2 pulse 1/2a/5a events. |
| Telecom Line Card Protection | Medical Sensor Signal Conditioning |
Use Scenario: Secondary-side voltage clamp on -48 V telecom power distribution rails. IC Role / Device Role / Timing Role: Zener shunt regulator maintaining stable bias for line driver ICs. Use Value: Low 1 µA reverse leakage preserves system standby current budget in always-on modules. | Use Scenario: Reference voltage source for 16-bit ADC front-end in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference for analog signal chain. Use Value: ±5% VZ tolerance and 30°C/W thermal resistance support stable reference performance across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5937B | Same 33 V Zener voltage but in DO-41 through-hole package; no metallic thermal tab; 1.5 W rating | Suitable only for lower-power, non-automated assembly; lacks thermal performance for sustained 3 W operation | Select 1PMT5937AE3/TR13 when SMT automation, thermal management, or >1.5 W clamping is required |
| BZX84-C33 | 33 V SOT-23 Zener; 300 mW rating; 90 Ω dynamic impedance; 100 nA leakage at 25 V | Lower power, higher impedance, and tighter leakage ideal for signal-level biasing-not for power rail clamping | Choose 1PMT5937AE3/TR13 for primary rail regulation; BZX84-C33 fits low-current reference roles |
Compared with 1N5937B and BZX84-C33, the 1PMT5937AE3/TR13 uniquely combines 3.0 W power handling, 30°C/W thermal resistance, and SMT manufacturability-enabling compact, high-reliability voltage regulation where thermal and space constraints preclude alternatives.
Availability
1PMT5937AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, and telecom infrastructure requiring stable component supply with consistent Zener voltage tolerance and thermal performance.
Supply support for 1PMT5937AE3/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 RF solutions for aerospace, defense, and industrial markets.
The Powermite® Zener series-including 1PMT5937AE3/TR13-is engineered for high-power surface-mount voltage regulation in space-constrained, thermally demanding applications where traditional through-hole Zeners fall short.
FAQ
What is the Zener voltage tolerance for 1PMT5937AE3/TR13?
The 1PMT5937AE3/TR13 has a nominal Zener voltage of 33 V with a standard tolerance of ±5%, as specified in the MSC0995 datasheet. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request. Voltage is measured at 11.4 mA test current with TAB 1 held at 30°C, and the 1PMT5937AE3/TR13 must stabilize for 20 seconds before measurement.
How is thermal performance characterized for 1PMT5937AE3/TR13?
The 1PMT5937AE3/TR13 features a junction-to-TAB thermal resistance of 30°C/W, enabling 3.0 W power dissipation when TAB 1 is maintained at 60°C. This requires adequate PCB copper area connected to TAB 1. The full metallic bottom and locking tab directly conduct heat into the board, distinguishing it from standard SOD-123 or SOT-23 packages.
Is 1PMT5937AE3/TR13 compatible with automated SMT assembly?
Yes, the 1PMT5937AE3/TR13 is designed for compatibility with automatic insertion and reflow soldering equipment. Its Powermite® package conforms to EIA-481 tape-and-reel standards (7-inch reel: 3,000 pcs; 13-inch reel: 12,000 pcs), and the locking tab ensures mechanical stability during pick-and-place operations.
What is the maximum reverse leakage current for 1PMT5937AE3/TR13?
The 1PMT5937AE3/TR13 exhibits a maximum reverse leakage current of 1 µA at a reverse voltage of 25.1 V and ambient temperature of 30°C. This low leakage supports energy-sensitive applications such as battery-powered sensors and always-on monitoring circuits where standby current must be minimized.
Does 1PMT5937AE3/TR13 meet any ESD immunity standards?
Yes, the 1PMT5937AE3/TR13 is rated for >16 kV per the Human Body Model (HBM) ESD test, as confirmed in the MSC0995 datasheet. This high immunity level ensures robustness during handling, automated assembly, and operation in electrically noisy environments like automotive and industrial control systems.
1PMT5937AE3/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):
- 33 V
- Tolerance:
- ±10%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 33 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 25.1 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
1PMT5937AE3/TR13 FAQ
1.How can I place an order for 1PMT5937AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT5937AE3/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 1PMT5937AE3/TR13 reliable?
The price and inventory of 1PMT5937AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT5937AE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1PMT5937AE3/TR13?
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4.How is shipping managed for 1PMT5937AE3/TR13?
1PMT5937AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT5937AE3/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 1PMT5937AE3/TR13?
For technical support, including 1PMT5937AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT5937AE3/TR13 requirements.
6.How does Aetrix verify that 1PMT5937AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1PMT5937AE3/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 1PMT5937AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1PMT5937AE3/TR13?
All 1PMT5937AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT5937AE3/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 1PMT5937AE3/TR13 part is unused and in its original packaging.
Return procedure for 1PMT5937AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT5937AE3/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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BZX84C3V3LT1G
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