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Microchip Technology 1N5372AE3/TR13
- Part No.:
- 1N5372AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5372AE3/TR13.pdf
- Description:
- DIODE ZENER 62V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,772
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Product details
Overview
1N5372AE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 62 V, ±10% tolerance (A suffix), 20 mA test current, 42 Ω dynamic impedance at IZT, and maximum reverse leakage of 0.5 μA at 47.1 V. It operates from –65 °C to +150 °C and regulates voltage in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N5372AE3/TR13 datasheet, 1N5372AE3/TR13 pinout, 1N5372AE3/TR13 application, or 1N5372AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, surge current rating (400 A), thermal resistance (25 °C/W junction-to-lead), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a precision voltage reference in shunt-regulator topologies, maintaining stable output under varying load and line conditions. Its low dynamic impedance (42 Ω) and tight voltage regulation (ΔVZ = 2.1 V) ensure minimal deviation across 10–50% of IZM (63–315 mA).
The 1N5372AE3/TR13 uses a void-free thermosetting epoxy T-18 package with cathode band polarity marking and is rated for 5 W steady-state dissipation at TL < 25 °C with 3/8″ lead length. It withstands 8.3 ms half-sine surge currents up to 400 A and exhibits ESD immunity per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±10% - defines regulated output level in shunt reference designs |
| Test Current (IZT) | 20 mA - operating point where VZ and ZZ are specified |
| Dynamic Impedance (ZZ) | 42 Ω at IZT - determines output voltage stability under current variation |
| Max Reverse Leakage (IR) | 0.5 μA at 47.1 V - ensures low standby power loss in high-impedance bias networks |
| Max Regulator Current (IZM) | 630 mA - maximum continuous DC current before thermal derating begins |
| Surge Current (IZSM) | 400 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables 5 W operation with minimal heatsinking at short lead lengths |
Pinout & Package
T-18 axial-leaded plastic package with cathode indicated by color band; leads are annealed matte-tin plated per MIL-STD-750, solderable at 260 °C for 10 s; weight 0.7 g; moisture sensitivity Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias; connected to lower-potential node in Zener mode | Required for forward conduction testing; tied to ground or return path in shunt regulator |
| Cathode | Current exit terminal during forward bias; positive terminal during Zener breakdown | Banded end - must be held at higher potential than anode to enable regulation |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant e3 suffix | Matte-tin plating meets EU Directive 2011/65/EU and J-STD-609A Class 1 |
| JEDEC-registered 1N53xxB series | Industry-standard footprint and electrical behavior for drop-in replacement across suppliers |
| Level 1 moisture sensitivity | No baking or dry pack required prior to PCB assembly - reduces manufacturing overhead |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special handling in production |
| High surge current capability | 400 A peak (8.3 ms) supports robust input-stage transient suppression without external TVS |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stable 62 V reference in isolated flyback auxiliary winding feedback network. IC Role / Device Role / Timing Role: Shunt voltage reference providing error signal to optocoupler-driven PWM controller. Use Value: Maintains ±10% output regulation across line/load variations with 42 Ω ZZ limiting error amplifier gain drift. |
Use Scenario: Clamping circuit protecting 60 V-rated MOSFET gate driver IC from input surges. IC Role / Device Role / Timing Role: Passive overvoltage clamp absorbing 400 A transients without latch-up or degradation. Use Value: Prevents gate oxide rupture by limiting voltage to ≤65.5 V during 8.3 ms surges per IEC 61000-4-5. |
| DC Motor Field Winding Snubber | Programmable Voltage Threshold Detector |
Use Scenario: Suppressing inductive kickback from 48 V brushed DC motor field coil during PWM switching. IC Role / Device Role / Timing Role: Energy-dissipating Zener clamping diode placed across field winding terminals. Use Value: Limits flyback voltage to 62 V ±10%, reducing snubber capacitor stress and enabling use of 100 V-rated FETs. |
Use Scenario: Setting precise trip threshold for comparator-based battery overcharge detection at 62 V. IC Role / Device Role / Timing Role: Precision voltage reference feeding non-inverting input of rail-to-rail comparator. Use Value: Enables ±0.62 V absolute threshold accuracy (±10%) without trimming, supporting Li-ion stack monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5372B | Same 62 V nominal VZ, but ±5% tolerance (B suffix) vs. ±10% (A suffix) | Higher precision required in feedback loops where ±0.62 V error is unacceptable | Select 1N5372B when tighter regulation is needed; otherwise 1N5372AE3/TR13 offers cost advantage |
| MMBZ5255BLT1G | Surface-mount SOT-23 package, 500 mW rating, 62 V ±5%, 100 Ω ZZ | Not suitable for 5 W continuous dissipation; limited to low-power bias/reference roles | Choose MMBZ5255BLT1G only for space-constrained PCBs with <100 mA average current |
Compared with 1N5372B and MMBZ5255BLT1G, the 1N5372AE3/TR13 delivers full 5 W power handling in axial-leaded form, making it uniquely suited for industrial power stage clamping and high-current reference duties where thermal mass and lead-frame heat sinking are critical.
Availability
1N5372AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and DC motor snubbers requiring stable component supply with RoHS compliance and JEDEC-standard reliability.
Supply support for 1N5372AE3/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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N53xx series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing surge resilience, wide temperature operation, and long-term parametric stability under thermal cycling.
FAQ
What is the Zener voltage tolerance of the 1N5372AE3/TR13?
The 1N5372AE3/TR13 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its actual regulation voltage falls between 55.8 V and 68.2 V at 20 mA test current and 25 °C. The tolerance is confirmed in the Electrical Characteristics table on page 1 of the Microsemi datasheet revision D (2008), where all "A"-suffix devices are explicitly defined as ±10%.
Does the 1N5372AE3/TR13 require dry packing before reflow soldering?
No, the 1N5372AE3/TR13 does not require dry packing. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ambient conditions without baking. This is stated in the Features section and confirmed in the Mechanical and Packaging section of the Microsemi datasheet, which notes "no dry pack required."
What is the maximum continuous Zener current for the 1N5372AE3/TR13?
The maximum continuous Zener current (IZM) for the 1N5372AE3/TR13 is 630 mA at TL < 25 °C with 3/8″ lead length. This value is derived from P = VZM × IZM, where VZM = 62 V × 1.1 = 68.2 V (upper limit of ±10% tolerance) and P = 5 W. The datasheet lists IZM = 630 mA directly in the Electrical Characteristics table for 1N5372B/A variants.
Can the 1N5372AE3/TR13 be used as a direct replacement for the 1N5372B?
The 1N5372AE3/TR13 is not a direct replacement for the 1N5372B due to its wider ±10% voltage tolerance versus the B version's ±5%. While both share identical package, pinout, and power rating, the looser tolerance affects regulation accuracy in precision feedback paths. Substitution requires system-level validation of output voltage drift under worst-case VZ limits.
What is the surge current rating of the 1N5372AE3/TR13 and how is it defined?
The 1N5372AE3/TR13 has a surge current rating (IZSM) of 400 A, defined as the peak value of a non-recurrent 8.3 ms half-sine waveform. This rating is specified in Note 5 of the datasheet and reflects the device's ability to absorb transient energy without failure-critical for input-stage surge protection in industrial power converters.
1N5372AE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 42 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 44.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- T-18
1N5372AE3/TR13 FAQ
1.How can I place an order for 1N5372AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5372AE3/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 1N5372AE3/TR13 reliable?
The price and inventory of 1N5372AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5372AE3/TR13 is usually 5 days.
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Once your 1N5372AE3/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 1N5372AE3/TR13?
For technical support, including 1N5372AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5372AE3/TR13 requirements.
6.How does Aetrix verify that 1N5372AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5372AE3/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 1N5372AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5372AE3/TR13?
All 1N5372AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5372AE3/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 1N5372AE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5372AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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