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Microchip Technology 1N5371BE3/TR8
- Part No.:
- 1N5371BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371BE3/TR8.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,546
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Product details
Overview
1N5371BE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 60 V, ±5% tolerance (B suffix), 20 mA test current, 40 Ω dynamic impedance at IZT, and maximum reverse current 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 1N5371BE3/TR8 datasheet, 1N5371BE3/TR8 pinout, 1N5371BE3/TR8 application, or 1N5371BE3/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (350 A), voltage regulation (ΔVZ = 2.2 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 design centers on stable Zener voltage maintenance across wide current (20 mA IZT to 350 A IZSM) and temperature (–65 °C to +150 °C) ranges, enabled by low thermal resistance (25 °C/W) and moisture-resistant Level 1 packaging.
It features cathode band polarity marking, UL94V-0 void-free epoxy case, and RoHS compliance via e3 suffix. The TR8 tape-and-reel packaging supports automated assembly, while its 0.7 g weight and T-18 outline define mechanical integration constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±5% - defines precise clamping threshold for overvoltage protection circuits |
| Test Current (IZT) | 20 mA - standard bias point for measuring VZ and ZZ; ensures stable regulation under typical load conditions |
| Dynamic Impedance (ZZ) | 40 Ω @ IZT - low impedance maintains tight voltage regulation during current transients |
| Max Reverse Current (IR) | 0.5 μA @ 45.5 V - confirms sharp knee and minimal leakage below breakdown |
| Surge Current (IZSM) | 350 A (8.3 ms half-sine) - enables robust transient suppression without failure |
| Voltage Regulation (ΔVZ) | 2.2 V - difference between VZ measured at 10% and 50% of IZM, indicating line regulation stability |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - allows high continuous power (5 W) with minimal heatsinking at 3/8″ lead length |
Pinout & Package
Package: Axial-leaded T-18 plastic encapsulated case with cathode indicated by color band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026; weight 0.7 g; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse-biased operation requires this terminal at lower voltage than cathode |
| Cathode | Zener breakdown terminal | Banded end; connected to higher-potential node; defines 60 V regulation reference point in shunt configuration |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| ±5% voltage tolerance (B suffix) | Enables tighter system-level voltage margining vs. ±10% or ±20% variants |
| RoHS-compliant e3 suffix | Meets global environmental compliance without performance trade-offs |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special handling during board assembly and testing |
| Level 1 moisture classification | Permits direct use from reel without baking, reducing manufacturing overhead |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation loops. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 60 V setpoint to optocoupler input or error amplifier. Use Value: Maintains output regulation within ±1% over line/load/temperature due to low ΔVZ (2.2 V) and stable ZZ (40 Ω). | Use Scenario: Protecting downstream circuitry from 60 V rail overvoltage events in motor drive gate driver stages. IC Role / Device Role / Timing Role: Passive crowbar element clamping rail voltage before MOSFET gate oxide breakdown. Use Value: Withstands 350 A surge (8.3 ms) without degradation, preserving system reliability during fault conditions. |
| Programmable Voltage Monitor Threshold | Calibrated Sensor Excitation Source |
Use Scenario: Setting trip point for comparator-based undervoltage/overvoltage detection in battery management systems. IC Role / Device Role / Timing Role: Precision voltage threshold generator referenced to system ground. Use Value: ±5% tolerance and low temperature coefficient ensure consistent trip points across –40 °C to +85 °C operating range. | Use Scenario: Providing stable excitation voltage to resistive bridge sensors in industrial pressure transducers. IC Role / Device Role / Timing Role: Low-noise, low-drift shunt reference supplying constant current through sensor elements. Use Value: Minimal voltage variation (ΔVZ = 2.2 V) over 2–100 mA operating range ensures linear sensor response calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5371BTR | Same electrical specs, but lacks e3 RoHS suffix and TR8 tape-and-reel packaging; uses SnPb plating | Not suitable for RoHS-compliant production; requires lead-free process compatibility verification | Select 1N5371BE3/TR8 when RoHS compliance and automated placement are mandatory |
| SMBJ5371B | Surface-mount SMB package; identical 60 V ±5% VZ, but lower IZM (210 mA vs. 350 A surge), higher ZZ (79 Ω), and different thermal path | Used where PCB space is constrained and reflow soldering is preferred; not interchangeable in axial-leaded designs | Select SMBJ5371B only for new SMT layouts; not a drop-in replacement for through-hole 1N5371BE3/TR8 |
Compared with 1N5371BTR and SMBJ5371B, the 1N5371BE3/TR8 uniquely combines RoHS compliance, axial-leaded mechanical robustness, 350 A surge capability, and JEDEC-standardized T-18 packaging-making it optimal for industrial power supply and protection applications requiring legacy-compatible through-hole assembly.
Availability
1N5371BE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and programmable voltage monitors requiring stable component supply and long-term lifecycle support.
Supply support for 1N5371BE3/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 1N53xxB series was designed specifically for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and JEDEC-standardized interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5371BE3/TR8?
The 1N5371BE3/TR8 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its actual regulation voltage falls between 57 V and 63 V at 20 mA test current and 25 °C. The e3 suffix confirms RoHS compliance, and TR8 denotes tape-and-reel packaging for automated assembly. This tolerance enables predictable clamping behavior in industrial power rails.
What is the maximum surge current rating for the 1N5371BE3/TR8?
The 1N5371BE3/TR8 is rated for a maximum non-recurrent surge current (IZSM) of 350 A, defined as the peak of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without parametric shift or catastrophic failure. The value is validated under JEDEC test conditions and directly supports overvoltage protection roles in motor drives and power converters where lightning or switching surges occur.
How does the thermal resistance of the 1N5371BE3/TR8 affect its power dissipation capability?
The 1N5371BE3/TR8 has a junction-to-lead thermal resistance (RθJL) of 25 °C/W when mounted with 3/8″ (10 mm) lead length from the body. This allows full 5 W power dissipation at 25 °C ambient if leads act as heat sinks. On FR4 PCBs, RθJA rises to 85 °C/W, limiting steady-state power to ~1.47 W. Thus, the 1N5371BE3/TR8's thermal design flexibility supports both high-power discrete mounting and compact board-level integration.
Is the 1N5371BE3/TR8 suitable for RoHS-compliant manufacturing?
Yes, the 1N5371BE3/TR8 is RoHS compliant, as confirmed by the "e3" suffix in its part number. It uses annealed matte-tin plating per MIL-STD-750 Method 2026 and meets lead-free soldering requirements (260 °C for 10 s). Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, eliminating bake requirements prior to reflow. These attributes make the 1N5371BE3/TR8 fully compatible with modern green manufacturing processes.
What is the reverse leakage current specification for the 1N5371BE3/TR8?
The 1N5371BE3/TR8 specifies a maximum reverse current (IR) of 0.5 μA at a reverse voltage (VR) of 45.5 V - which is 75% of its nominal 60 V Zener voltage. This low leakage confirms sharp knee characteristics and minimal power loss in standby operation. It also ensures reliable blocking behavior in series-shunt hybrid regulator topologies where leakage could degrade reference accuracy.
1N5371BE3/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:
- ±5%
- 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
1N5371BE3/TR8 FAQ
1.How can I place an order for 1N5371BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371BE3/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 1N5371BE3/TR8 reliable?
The price and inventory of 1N5371BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5371BE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5371BE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5371BE3/TR8?
1N5371BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371BE3/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 1N5371BE3/TR8?
For technical support, including 1N5371BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371BE3/TR8 requirements.
6.How does Aetrix verify that 1N5371BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5371BE3/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 1N5371BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5371BE3/TR8?
All 1N5371BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371BE3/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 1N5371BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5371BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371BE3/TR8 Tags
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