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Microchip Technology 1N5372CE3/TR12
- Part No.:
- 1N5372CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5372CE3/TR12.pdf
- Description:
- DIODE ZENER 62V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,502
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Product details
Overview
1N5372CE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 62 V, ±2% tolerance (C suffix), 42 Ω dynamic impedance at 20 mA test current, and maximum reverse current of 0.5 μA at 47.1 V. 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 1N5372CE3/TR12 datasheet, 1N5372CE3/TR12 pinout, 1N5372CE3/TR12 application, or 1N5372CE3/TR12 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. Its Zener voltage is specified at 20 mA (IZT) with tight ±2% tolerance, low dynamic impedance (42 Ω), and minimal voltage variation (ΔVZ = 2.1 V between 10% and 50% of IZM).
It features a thermosetting epoxy T-18 package rated for 5 W at TL < 25 °C (3/8″ lead length), junction-to-ambient thermal resistance of 85 °C/W on FR4, and withstands 8.3 ms half-sine surge currents up to 400 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±2% - precise regulation point for feedback loops and reference circuits |
| Test Current (IZT) | 20 mA - stable operating point where VZ and ZZ are guaranteed |
| Dynamic Impedance (ZZ) | 42 Ω at 20 mA - low AC resistance ensures minimal output voltage shift under load transients |
| Max Reverse Current (IR) | 0.5 μA at 47.1 V - ultra-low leakage preserves accuracy in high-impedance bias networks |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires minimum 3/8″ lead length for full rating; derates linearly above 25 °C |
| Surge Current (IZSM) | 400 A (8.3 ms half-sine) - handles transient overvoltage events without failure |
| Voltage Regulation (ΔVZ) | 2.1 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free transfer-molded thermosetting epoxy, UL94V-0 rated); cathode indicated by band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in reverse-bias regulation | Connected to circuit ground or lower potential node when used as shunt regulator |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to input rail; maintains stable 62 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables high-accuracy voltage references without external trimming in power supply feedback paths |
| Moisture sensitivity Level 1 | No dry pack required prior to PCB assembly-reduces handling cost and process steps |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during manual assembly or rework |
| RoHS-compliant e3 suffix | Meets EU Directive 2011/65/EU and China RoHS II with annealed matte-tin plating |
| 85 °C/W junction-to-ambient thermal resistance | Defines minimum copper pad area (4 mm²) and trace geometry (1 mm × 25 mm) needed for safe operation at 1.47 W on FR4 |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler-based feedback loops. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 62 V reference to error amplifier input. Use Value: ±2% tolerance and 2.1 V ΔVZ ensure output regulation within ±1.5% across line/load/temperature. | Use Scenario: Protecting downstream 60 V-rated MOSFET gates from transient overvoltage on 48 V bus systems. IC Role / Device Role / Timing Role: Fast-acting clamp that conducts above 62 V to divert surge energy. Use Value: 400 A surge rating and low ZZ limit clamping voltage overshoot to ≤64.1 V during 8.3 ms transients. |
| Programmable Reference Source | High-Temperature Sensor Biasing |
Use Scenario: Generating stable bias voltages for analog front-ends in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Fixed 62 V reference feeding resistor-divider networks to set multiple lower thresholds. Use Value: Low 0.5 μA leakage at 47.1 V prevents loading errors in high-impedance divider chains. | Use Scenario: Providing excitation voltage to RTD or thermistor bridges operating in engine control units (ECUs). IC Role / Device Role / Timing Role: Temperature-stable voltage source across –40 °C to +125 °C ambient range. Use Value: Specified operation to +150 °C junction temperature enables direct mounting near heat sources without derating. |
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) and higher ZZ (76 Ω) | Acceptable where tighter regulation not required; higher ΔVZ (2.2 V) reduces accuracy in precision feedback | Select 1N5372B only if cost sensitivity outweighs ±2% tolerance requirement |
| MMSZ5259ET1G | Surface-mount SOD-123 package; 62 V ±5%, 500 mW rating, ZZ = 130 Ω at 20 mA | Not suitable for 5 W continuous dissipation; limited to low-power bias/reference roles | Choose MMSZ5259ET1G only for space-constrained PCBs where power < 0.5 W and ±5% tolerance is acceptable |
Compared with 1N5372B and MMSZ5259ET1G, the 1N5372CE3/TR12 delivers superior voltage accuracy (±2%), lower dynamic impedance (42 Ω), and full 5 W power handling in an axial-leaded package optimized for through-hole thermal management-making it the only option among the three qualified for industrial-grade 62 V shunt regulation at elevated temperatures.
Availability
1N5372CE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and high-temperature sensor biasing requiring stable component supply and long-term lifecycle support.
Supply support for 1N5372CE3/TR12 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 1N53xx series was designed specifically for robust, high-power Zener regulation in harsh-environment power conversion and protection systems-emphasizing thermal performance, surge resilience, and extended temperature operation.
FAQ
What is the Zener voltage tolerance of the 1N5372CE3/TR12?
The 1N5372CE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its actual breakdown voltage falls within 60.76 V to 63.24 V at 20 mA test current and 25 °C junction temperature, enabling high-accuracy voltage referencing in feedback networks where tighter regulation is critical compared to ±5% (B suffix) or ±10% (A suffix) variants.
Can the 1N5372CE3/TR12 be used in surface-mount designs?
No-the 1N5372CE3/TR12 is an axial-leaded T-18 package device intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the SMBJ5372B (SMB package, 5 W, ±5%) and SMBG5372B (SMBG package, 5 W, ±5%). The 1N5372CE3/TR12 itself lacks solder pads or gull-wing leads and cannot be reflowed or placed by standard SMT equipment without mechanical adaptation.
What is the maximum steady-state power dissipation of the 1N5372CE3/TR12 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz copper) with 4 mm² copper pads and 1 mm × 25 mm traces, the 1N5372CE3/TR12 has a steady-state power rating of 1.47 W at 25 °C ambient temperature. This is derived from its 85 °C/W junction-to-ambient thermal resistance; exceeding this power without additional heatsinking risks junction temperature exceeding the +150 °C absolute maximum rating.
Does the 1N5372CE3/TR12 meet RoHS requirements?
Yes-the "e3" suffix in 1N5372CE3/TR12 explicitly indicates RoHS compliance per EU Directive 2011/65/EU and China RoHS II. Its leads are plated with annealed matte tin (no lead or cadmium), and its void-free thermosetting epoxy body meets UL94V-0 flammability standards-verified per Microsemi's official documentation and certified by authorized distributors.
How does the voltage regulation (ΔVZ) specification impact circuit performance for the 1N5372CE3/TR12?
The 1N5372CE3/TR12 has a voltage regulation (ΔVZ) of 2.1 V-defined as the difference between its Zener voltage measured at 10% and 50% of maximum Zener current (IZM). This parameter quantifies how tightly the device maintains its 62 V reference across varying load currents; a lower ΔVZ improves regulation stability in shunt regulator applications, especially where input current varies significantly due to upstream switching or line fluctuations.
1N5372CE3/TR12 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:
- ±2%
- 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
1N5372CE3/TR12 FAQ
1.How can I place an order for 1N5372CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5372CE3/TR12 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 1N5372CE3/TR12 reliable?
The price and inventory of 1N5372CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5372CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5372CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5372CE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5372CE3/TR12?
1N5372CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5372CE3/TR12 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 1N5372CE3/TR12?
For technical support, including 1N5372CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5372CE3/TR12 requirements.
6.How does Aetrix verify that 1N5372CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5372CE3/TR12 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 1N5372CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5372CE3/TR12?
All 1N5372CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5372CE3/TR12, 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 1N5372CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5372CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5372CE3/TR12 Tags
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MM5Z5V1ST1G
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