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Microchip Technology 1N5371AE3/TR8
- Part No.:
- 1N5371AE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371AE3/TR8.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,364
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Product details
Overview
1N5371AE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 60 V, ±10% tolerance (A suffix), 20 mA test current, 40 Ω dynamic impedance at IZT, and maximum reverse leakage of 0.5 µA at 45.5 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 1N5371AE3/TR8 datasheet, 1N5371AE3/TR8 pinout, 1N5371AE3/TR8 application, or 1N5371AE3/TR8 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (350 A), voltage regulation (ΔVZ = 1.20 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 60 V output across a wide operating current range (20 mA to 83 mA). Its low dynamic impedance (40 Ω) ensures minimal voltage deviation under load variation, while its 25 °C/W thermal resistance enables reliable 5 W dissipation with 3/8″ lead length heat sinking.
The 1N5371AE3/TR8 features a void-free UL94V-0 epoxy case, cathode band polarity marking, and moisture sensitivity level 1 - eliminating dry-pack requirements. It withstands 8.3 ms half-sine surge currents up to 350 A and exhibits <0.5 µA leakage at 45.5 V, supporting robust overvoltage clamping in DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±10% - defines regulated output voltage under 20 mA test current; high-end tolerance limit is 66 V for IZM calculation. |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - supports continuous regulation in thermally managed linear supply designs. |
| Dynamic Impedance (ZZ) | 40 Ω at IZT = 20 mA - determines voltage stability against current fluctuations; lower than 1N5370B (35 Ω) due to tighter process control. |
| Max Reverse Leakage (IR) | 0.5 µA at VR = 45.5 V - ensures negligible standby current in high-impedance bias networks. |
| Surge Current (IZSM) | 350 A (8.3 ms half-sine) - provides transient overvoltage suppression without degradation in telecom or motor drive protection circuits. |
| Voltage Regulation (ΔVZ) | 1.20 V - measured between 10% and 50% of IZM; quantifies regulation linearity for feedback reference applications. |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables direct lead-mounting on heatsinks; 85 °C/W junction-to-ambient on FR4 with 4 mm² copper pad. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-201AD), void-free UL94V-0 epoxy body, matte-tin plated leads solderable per MIL-STD-750 Method 2026. Cathode indicated by single black band; banded end must be biased positive relative to anode for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink terminal in reverse bias | Connected to lower-potential node (e.g., ground or return rail); carries full Zener current during regulation. |
| Cathode (banded end) | Regulated voltage output node | Provides stable 60 V reference when reverse-biased; must be held at higher potential than anode. |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant construction | e3 suffix confirms lead-free matte-tin plating and halogen-free epoxy - meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack. |
| High surge current capability | 350 A peak (8.3 ms half-sine) enables single-device transient voltage suppression in 48 V industrial bus systems. |
| Tight thermal resistance | 25 °C/W junction-to-lead allows 5 W operation with minimal heatsinking - suitable for compact PCB layouts with 3/8″ lead length. |
| Low reverse leakage | ≤0.5 µA at 45.5 V ensures minimal error in high-gain op-amp reference circuits and battery-powered sensor bias networks. |
| Stable voltage regulation | ΔVZ = 1.20 V over 10–50% IZM range supports accurate feedback in switching regulator error amplifiers. |
Applications
| Industrial Power Supply Reference | DC Bus Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 60 V reference for TL431-based adjustable linear regulators in programmable bench power supplies. IC Role / Device Role / Timing Role: Zener diode serves as primary voltage reference source, setting feedback divider ratio for output regulation accuracy. Use Value: ±10% VZ tolerance and 1.20 V ΔVZ ensure ≤2% total output error across temperature and load, meeting Class II lab supply specs. |
Use Scenario: Clamping 48 V DC distribution bus against load-dump transients in factory automation controllers. IC Role / Device Role / Timing Role: Standby shunt element that conducts only during overvoltage events exceeding 60 V threshold. Use Value: 350 A surge rating absorbs 100 mJ pulses without failure, eliminating need for parallel TVS arrays in space-constrained PLC modules. |
| Motor Drive Gate Bias Stabilization | Telecom Line Card Protection |
Use Scenario: Stabilizing isolated gate driver bias voltage for 600 V IGBTs in servo amplifier inverters. IC Role / Device Role / Timing Role: Zener clamp maintains constant 60 V across bootstrap capacitor, ensuring consistent gate-source voltage during PWM switching. Use Value: 40 Ω ZZ minimizes voltage sag under 20 mA dynamic gate charge/discharge current, preserving switching timing integrity. |
Use Scenario: Protecting analog front-end circuitry on DSL line cards from induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary overvoltage limiter placed before protection ICs and ADC inputs to prevent latch-up. Use Value: 0.5 µA leakage at 45.5 V avoids signal path loading in high-impedance receive amplifiers, preserving SNR above 70 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5371B (Microsemi) | ±5% VZ tolerance vs. ±10% for 1N5371AE3/TR8; identical 60 V nominal, 40 Ω ZZ, and 350 A IZSM. | Higher precision required in feedback loops where 3 V tolerance margin is insufficient. | Select 1N5371B when voltage accuracy dominates over cost; same package and thermal performance. |
| SMBJ60A (Microchip) | Surface-mount SMB package (vs. axial T-18); 60 V VBR (min), 66.7 V VWM; 100 W peak power but lower continuous rating (1.0 W). | Used in automated SMT assembly where board space is constrained and surge duty cycle is infrequent. | Choose SMBJ60A only for transient-only clamping; not suitable for continuous 5 W regulation like 1N5371AE3/TR8. |
Compared with 1N5371B, the 1N5371AE3/TR8 trades voltage precision for cost efficiency in non-critical references; versus SMBJ60A, it delivers true 5 W continuous regulation with superior thermal management - making it irreplaceable in linear regulator and high-duty-cycle clamp roles.
Availability
1N5371AE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, DC bus protection systems, and motor drive bias networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5371AE3/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 5 W voltage regulation in harsh-environment power systems - emphasizing thermal robustness, surge resilience, and long-term parametric stability over decades of field operation.
FAQ
What is the Zener voltage tolerance of the 1N5371AE3/TR8?
The 1N5371AE3/TR8 has a ±10% Zener voltage tolerance, indicated by the "A" suffix in its part number. This means its actual regulation voltage falls between 54 V and 66 V at 20 mA test current and 25 °C lead temperature. The e3/TR8 suffix confirms RoHS compliance and tape-and-reel packaging - both independent of voltage tolerance grading.
How much power can the 1N5371AE3/TR8 dissipate continuously?
The 1N5371AE3/TR8 is rated for 5.0 W continuous power dissipation at a lead temperature (TL) of 25 °C with 3/8″ (10 mm) lead length from the body. Derating is required above 25 °C - approximately 40 mW/°C - per the published power derating curve. On standard FR4 PCBs with 4 mm² copper pads, its steady-state rating drops to 1.47 W at 25 °C ambient.
What is the maximum reverse leakage current for the 1N5371AE3/TR8?
The 1N5371AE3/TR8 specifies a maximum reverse leakage current (IR) of 0.5 µA at a reverse test voltage (VR) of 45.5 V. This value is guaranteed across the full operating temperature range (–65 °C to +150 °C) and reflects the device's suitability for high-impedance reference and sensing applications where leakage-induced errors must remain below nanoscale thresholds.
Does the 1N5371AE3/TR8 have surge current capability, and if so, what is its rating?
Yes, the 1N5371AE3/TR8 is rated for a non-repetitive peak surge current (IZSM) of 350 A, defined as the maximum amplitude of an 8.3 ms half-sine waveform. This capability enables the device to absorb transient energy in industrial power systems without degradation - a key differentiator from lower-power Zeners or standard rectifiers lacking specified surge ratings.
What does the "TR8" suffix mean in 1N5371AE3/TR8?
The "TR8" suffix in 1N5371AE3/TR8 indicates tape-and-reel packaging per EIA-296 standard, with 800 units per reel. This format supports automated SMT placement despite the device's axial-leaded T-18 package - achieved via carrier tape with pocketed orientation and cover tape sealing. The "e3" prefix confirms RoHS-compliant matte-tin plating, fully compatible with lead-free reflow profiles.
1N5371AE3/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):
- 60 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 43 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
1N5371AE3/TR8 FAQ
1.How can I place an order for 1N5371AE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371AE3/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 1N5371AE3/TR8 reliable?
The price and inventory of 1N5371AE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371AE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5371AE3/TR8?
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4.How is shipping managed for 1N5371AE3/TR8?
1N5371AE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371AE3/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 1N5371AE3/TR8?
For technical support, including 1N5371AE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371AE3/TR8 requirements.
6.How does Aetrix verify that 1N5371AE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5371AE3/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 1N5371AE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5371AE3/TR8?
All 1N5371AE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371AE3/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 1N5371AE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5371AE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371AE3/TR8 Tags
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