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Microchip Technology 1N5372C/TR8
- Part No.:
- 1N5372C/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5372C/TR8.pdf
- Description:
- DIODE ZENER 62V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,313
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Product details
Overview
1N5372C/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 62 V, ±2% tolerance (C suffix), 42 Ω dynamic impedance at 20 mA test current, and maximum reverse leakage 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 1N5372C/TR8 datasheet, 1N5372C/TR8 pinout, 1N5372C/TR8 application, or 1N5372C/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 in reverse-biased mode, maintaining stable output across wide current ranges (IZM = 400 mA max at TL < 25 °C). Its low dynamic impedance (42 Ω) and tight ±2% voltage tolerance ensure minimal deviation under load variation.
The 1N5372C/TR8 uses a void-free thermosetting epoxy T-18 package rated UL94V-0, with cathode indicated by band and leads solderable at 260 °C for 10 s. Thermal resistance is specified at 25 °C/W junction-to-lead (3/8″ lead length) and 85 °C/W junction-to-ambient on FR4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±2% - precise regulation point for feedback loops and reference circuits |
| Power Dissipation | 5.0 W at 25 °C lead temperature - requires heatsinking above 25 °C ambient |
| Test Current (IZT) | 20 mA - standard bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 42 Ω at IZT - low AC resistance ensures stable regulation under varying load currents |
| Max Reverse Leakage (IR) | 0.5 μA at 47.1 V - guarantees minimal standby current in high-impedance sensing paths |
| Surge Current (IZSM) | 400 A (8.3 ms half-sine) - withstands transient overvoltage events without failure |
| Voltage Regulation (ΔVZ) | 2.1 V - difference between VZ measured at 10% and 50% of IZM, indicating line regulation performance |
Pinout & Package
Package: T-18 axial-leaded plastic case (UL94V-0 epoxy), cathode identified by color band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage reference node | Connected to circuit ground or lower-potential rail in shunt regulator configuration |
| Cathode | Zener regulation terminal / high-voltage reference node | Banded end; connected to unregulated input; provides stable 62 V reference to load or error amplifier |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control vs. ±5% (B) or ±10% (A) variants, reducing calibration overhead |
| JEDEC-registered 1N53xx series | Guarantees standardized mechanical dimensions, thermal behavior, and electrical test conditions across manufacturers |
| Moisture sensitivity Level 1 | No dry-pack required before PCB assembly - simplifies handling and reduces BOM cost |
| 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 with matte-tin plating - no lead or hazardous substance restrictions in production |
Applications
| Industrial Power Supply Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Shunt reference providing precise 62 V threshold to TL431-like comparator or error amplifier. Use Value: ±2% tolerance enables <1% output voltage drift across line/load/temperature, meeting EN 61000-3-2 compliance. | Use Scenario: Protecting downstream MOSFET gates or ADC inputs from transient surges in motor drive inverters. IC Role / Device Role / Timing Role: Fast-acting clamp limiting voltage to 62 V during 400 A surge events (8.3 ms). Use Value: 42 Ω dynamic impedance ensures clamping voltage stays within safe margin of 62 V + 2.1 V regulation delta. |
| Programmable Reference Source | High-Voltage Sensor Biasing |
Use Scenario: Generating stable bias for high-side current sense amplifiers in telecom rectifiers. IC Role / Device Role / Timing Role: Precision 62 V reference for resistor-divider networks feeding instrumentation amplifiers. Use Value: 0.5 μA reverse leakage prevents loading errors in high-impedance divider arms (>1 MΩ). | Use Scenario: Providing regulated bias to photodiode or avalanche photodetector anodes in optical receivers. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source stabilizing detector operating point. Use Value: 25 °C/W junction-to-lead thermal resistance allows direct mounting to metal chassis for stable temperature coefficient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5372B/TR8 | ±5% tolerance, 47 Ω ZZ, same VZ nominal and IZM | Lower precision; suitable where calibration compensates for tolerance | Select when cost priority outweighs regulation accuracy; verify ΔVZ = 2.1 V still meets system line regulation spec |
| MMSZ5259ET1G | Surface-mount SOD-123, 500 mW, 62 V ±5%, ZZ = 130 Ω | Not drop-in; requires layout change and derating for 5 W operation | Choose only for space-constrained designs accepting higher impedance and lower power handling |
Compared with 1N5372B/TR8 and MMSZ5259ET1G, the 1N5372C/TR8 delivers superior voltage stability (±2% vs ±5%) and lower dynamic impedance (42 Ω vs 47 Ω or 130 Ω), making it optimal for high-accuracy feedback and low-drift biasing where thermal management permits axial-leaded mounting.
Availability
1N5372C/TR8 is available at Aetrix Electronics and suitable for industrial power supply feedback, overvoltage clamp protection, and programmable reference source applications requiring stable component supply and long-term obsolescence mitigation.
Supply support for 1N5372C/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed for robust, high-power voltage regulation in harsh environments-emphasizing thermal resilience, surge survivability, and JEDEC-standardized interchangeability across military and commercial applications.
FAQ
What is the Zener voltage tolerance of the 1N5372C/TR8?
The 1N5372C/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix per Microsemi's documentation. This means its actual regulation voltage falls within 60.76 V to 63.24 V at 20 mA test current and 25 °C lead temperature. The 1N5372C/TR8 achieves tighter regulation than the ±5% 1N5372B/TR8 variant, supporting higher-accuracy feedback designs without external trimming.
How much power can the 1N5372C/TR8 dissipate continuously?
The 1N5372C/TR8 is rated for 5.0 W continuous power dissipation at a lead temperature (TL) of 25 °C, with linear derating above that temperature at 40 mW/°C. When mounted on an FR4 PCB with specified copper pads, its steady-state power drops to 1.47 W at 25 °C ambient. Proper heatsinking-such as 3/8″ lead length from body-is required to sustain full 5 W operation, as confirmed in Microsemi's Figure 1 derating curve.
What is the maximum reverse leakage current for the 1N5372C/TR8?
The 1N5372C/TR8 specifies a maximum reverse leakage current (IR) of 0.5 μA at a reverse test voltage (VR) of 47.1 V, per the "ELECTRICAL CHARACTERISTICS" table. This low leakage ensures minimal error in high-impedance reference divider networks and supports stable operation in battery-backed or ultra-low-power monitoring circuits where standby current must be tightly controlled.
Does the 1N5372C/TR8 meet RoHS requirements?
Yes, the 1N5372C/TR8 is RoHS compliant, indicated by the "e3" suffix in its full manufacturer designation. Its leads feature RoHS-compliant annealed matte-tin plating per MIL-STD-750 Method 2026, and the void-free thermosetting epoxy case meets UL94V-0 flammability standards. No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances exceed EU Directive 2011/65/EU limits.
What is the surge current rating of the 1N5372C/TR8?
The 1N5372C/TR8 has a maximum non-recurrent surge current (IZSM) rating of 400 A for an 8.3 ms half-sine waveform, as documented in the "ELECTRICAL CHARACTERISTICS" table. This rating reflects its ability to absorb transient energy without degradation, making it suitable for clamping inductive kickback or lightning-induced surges in industrial motor controls and power converter front-ends.
1N5372C/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:
- ±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
1N5372C/TR8 FAQ
1.How can I place an order for 1N5372C/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5372C/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 1N5372C/TR8 reliable?
The price and inventory of 1N5372C/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5372C/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5372C/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5372C/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5372C/TR8?
1N5372C/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5372C/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 1N5372C/TR8?
For technical support, including 1N5372C/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5372C/TR8 requirements.
6.How does Aetrix verify that 1N5372C/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5372C/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 1N5372C/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5372C/TR8?
All 1N5372C/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5372C/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 1N5372C/TR8 part is unused and in its original packaging.
Return procedure for 1N5372C/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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