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Microchip Technology 1N5372AE3/TR8
- Part No.:
- 1N5372AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5372AE3/TR8.pdf
- Description:
- DIODE ZENER 62V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,758
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Product details
Overview
1N5372AE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 62 V, ±10% tolerance (A suffix), 20 mA test current, 42 Ω maximum dynamic impedance at IZT, and 400 mA maximum Zener current (IZM). It operates from –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5372AE3/TR8 datasheet, 1N5372AE3/TR8 pinout, 1N5372AE3/TR8 application, or 1N5372AE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (400 A), voltage regulation (ΔVZ = 2.1 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown mode. Its 62 V nominal Zener voltage is specified at 20 mA test current with ±10% tolerance, and it maintains stable regulation across 10–50% of IZM (40–200 mA) with ΔVZ ≤ 2.1 V.
Thermal design relies on low junction-to-lead thermal resistance (25 °C/W at 3/8″ lead length), enabling 5 W dissipation at TL = 25 °C. It features UL94V-0 epoxy encapsulation, cathode band polarity marking, and moisture sensitivity level 1 per J-STD-020B-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±10% - defines regulated output voltage under 20 mA test current; high-voltage reference for feedback loops. |
| Power Dissipation | 5.0 W at TL = 25 °C - requires minimum 3/8″ (10 mm) lead length from body for full rating. |
| Dynamic Impedance (ZZ) | 42 Ω max at IZT = 20 mA - determines voltage stability under load current variation. |
| Max Zener Current (IZM) | 400 mA - peak continuous reverse current before thermal runaway; sets upper limit for shunt regulator sizing. |
| Surge Current (IZSM) | 400 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure. |
| Voltage Regulation (ΔVZ) | 2.1 V - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity. |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal management via PCB copper pads or heatsink attachment to leads. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by color band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased reference terminal | Connected to system ground or lower-potential node; carries full Zener current during regulation. |
| Cathode | Regulated output terminal | Banded end; held at stable 62 V relative to anode; interfaces directly with error amplifier inputs or clamp nodes. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized electrical behavior and interchangeability across qualified suppliers. |
| ±10% voltage tolerance (A suffix) | Supports cost-sensitive applications where tighter tolerance is unnecessary; reduces BOM cost vs. ±5% (B) or ±1% (D) variants. |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life constraints-enables direct placement after opening tape/reel packaging. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-safe workstations during assembly. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU; uses annealed matte-tin plating instead of tin-lead, compatible with Pb-free reflow profiles. |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp for DC Bus |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Primary-side voltage reference connected to TL431 cathode or optocoupler LED anode. Use Value: Provides stable 62 V reference to set precise output voltage; low ΔVZ ensures <±0.5% output drift over load range. |
Use Scenario: Protecting 48 V or 60 V DC distribution rails from transient surges (e.g., in telecom or railway systems). IC Role / Device Role / Timing Role: Shunt clamp placed across rail and ground; conducts only above 62 V threshold. Use Value: Absorbs 400 A surge (8.3 ms) without degradation; 5 W steady-state rating sustains prolonged overvoltage events. |
| Programmable Voltage Reference | Field-Serviceable Voltage Calibration |
Use Scenario: Setting adjustable thresholds in analog comparators or ADC reference dividers for test equipment. IC Role / Device Role / Timing Role: Fixed reference node in resistor-divider networks; replaces trim-pot-based references for long-term stability. Use Value: Delivers <100 ppm/°C tempco over –65 °C to +150 °C; ±10% initial tolerance acceptable for coarse calibration steps. |
Use Scenario: Field-replaceable reference element in calibrated instrumentation requiring traceable voltage standards. IC Role / Device Role / Timing Role: Swappable Zener module mounted on service-accessible header; marked with part number and date code. Use Value: e3 RoHS compliance and JEDEC registration ensure consistent replacement; axial leads simplify hand-soldering during repair. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5372B | Same 62 V nominal voltage but ±5% tolerance (B suffix); otherwise identical ratings and package. | Used where tighter voltage accuracy is required, such as in precision feedback loops or metrology-grade references. | Select 1N5372B when output regulation stability >±5% is mandatory; no layout change needed. |
| MMBZ5255B (SOT-23) | Surface-mount 62 V Zener (±5%), rated for 0.5 W-not a power-equivalent replacement. | Suitable only for low-power signal-level clamping or biasing; cannot replace 1N5372AE3/TR8 in 5 W applications. | Choose MMBZ5255B only for space-constrained PCBs with <100 mA Zener current; verify thermal derating on FR4. |
Compared with 1N5372B and MMBZ5255B, the 1N5372AE3/TR8 offers the lowest cost per watt for through-hole 62 V regulation, combines RoHS compliance with legacy JEDEC compatibility, and delivers proven surge robustness unmatched by SMT alternatives.
Availability
1N5372AE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, DC bus protection circuits, and programmable voltage reference designs requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5372AE3/TR8 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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for ruggedized, high-power voltage regulation in harsh-environment power systems-emphasizing thermal resilience, surge immunity, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance for 1N5372AE3/TR8?
The 1N5372AE3/TR8 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 lead temperature. The tolerance is verified per JEDEC standard and applies across the full operating temperature range of –65 °C to +150 °C.
Can 1N5372AE3/TR8 be used in surface-mount designs?
No, the 1N5372AE3/TR8 is an axial-leaded T-18 package and is not suitable for surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5372B (DO-214AA) and SMBG5372B (DO-214AB), both rated for 5 W and sharing identical electrical specs. These require reflow profile validation and board layout changes versus the through-hole 1N5372AE3/TR8.
What is the maximum surge current rating for 1N5372AE3/TR8?
The 1N5372AE3/TR8 is rated for a maximum non-recurrent surge current (IZSM) of 400 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating assumes proper lead mounting and adequate heat sinking; repeated surges must respect the device's thermal time constant and cumulative energy limits specified in Microsemi Application Note AN-202.
How does the e3 suffix affect 1N5372AE3/TR8?
The "e3" suffix on 1N5372AE3/TR8 indicates RoHS compliance: lead-free matte-tin plating on annealed copper leads, fully compliant with EU Directive 2011/65/EU. It retains full compatibility with SnPb soldering processes and meets MIL-STD-750 Method 2026 solderability requirements-no reflow profile adjustment is needed for Pb-free assembly.
Is 1N5372AE3/TR8 suitable for use in automotive applications?
The 1N5372AE3/TR8 is not AEC-Q200 qualified and lacks automotive-specific screening (e.g., temperature cycling, vibration, or humidity testing). While its operating temperature range (–65 °C to +150 °C) exceeds typical automotive under-hood requirements, Microsemi recommends the JAN1N5372B or JANTXV1N5372B variants-screened to MIL-PRF-19500-for mission-critical automotive systems.
1N5372AE3/TR8 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/TR8 FAQ
1.How can I place an order for 1N5372AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5372AE3/TR8 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/TR8 reliable?
The price and inventory of 1N5372AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5372AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5372AE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5372AE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5372AE3/TR8?
1N5372AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5372AE3/TR8 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/TR8?
For technical support, including 1N5372AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5372AE3/TR8 requirements.
6.How does Aetrix verify that 1N5372AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5372AE3/TR8 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/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5372AE3/TR8?
All 1N5372AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5372AE3/TR8, 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/TR8 part is unused and in its original packaging.
Return procedure for 1N5372AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5372AE3/TR8 Tags
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