My Inquiry
My Account
Microchip Technology 1N5371E3/TR8
- Part No.:
- 1N5371E3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371E3/TR8.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,155
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5371E3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 60 V, ±5% tolerance (B-suffix equivalent), 20 mA test current, 40 Ω maximum dynamic impedance at IZT, and 350 A peak surge current rating. 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 1N5371E3/TR8 datasheet, 1N5371E3/TR8 pinout, 1N5371E3/TR8 application, or 1N5371E3/TR8 equivalent, this page delivers verified electrical parameters, thermal derating behavior, RoHS-compliant plating details, tape-and-reel packaging configuration, and direct alternatives with documented voltage/tolerance/power differences.
Technical Context
This Zener diode functions as a two-terminal shunt voltage regulator, maintaining stable reverse-bias voltage across its cathode–anode terminals under varying load and line conditions. Its regulation relies on controlled avalanche breakdown in the doped silicon junction, with low dynamic impedance ensuring minimal voltage shift across 10–50% of IZM.
Designed for through-hole mounting with 3/8″ (10 mm) lead length from body, it achieves 25 °C/W junction-to-lead thermal resistance. When mounted on FR4 with specified copper pads, its steady-state power drops to 1.47 W at 25 °C ambient due to higher 85 °C/W junction-to-ambient resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V nominal, ±5% tolerance - defines regulated output voltage under 20 mA test current at 25 °C lead temperature. |
| Power Dissipation (PD) | 5.0 W at TL = 25 °C - maximum continuous DC power before thermal derating begins; requires heat sinking above 25 °C lead temp. |
| Dynamic Impedance (ZZ) | 40 Ω max at IZT = 20 mA - determines voltage stability under changing load current; lower value improves regulation accuracy. |
| Surge Current (IZSM) | 350 A peak (8.3 ms half-sine) - supports transient overvoltage clamping without failure in surge-prone power rails. |
| Reverse Leakage (IR) | 0.5 μA max at VR = 45 V - ensures negligible standby current in high-impedance bias networks or reference dividers. |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables thermal modeling for PCB layout; requires ≥10 mm lead length from body for rated power. |
| Operating Temperature | –65 °C to +150 °C - supports deployment in automotive engine compartments, industrial motor drives, and outdoor power systems. |
Pinout & Package
Package: Axial-leaded T-18 plastic case per JEDEC DO-204AL standard; void-free UL94V-0 epoxy body; cathode indicated by band; RoHS-compliant matte-tin plating; weight 0.7 g; tape-and-reel packaging per EIA-296 (TR8 suffix denotes 800 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current entry terminal in forward bias; reference ground node in shunt regulation | Connected to system ground or low-side return path; must handle full surge current during clamping events. |
| Cathode (banded end) | Regulated voltage output node in reverse bias; high-side connection point | Connected to voltage rail being stabilized; polarity reversal causes catastrophic failure; band orientation must be verified during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized mechanical dimensions, marking, and thermal performance across global suppliers and second sources. |
| Moisture Sensitivity Level 1 | No dry pack required prior to soldering - reduces handling cost and eliminates bake-out step in SMT reflow prep. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model ESD events up to ±2 kV without parameter shift - simplifies handling in non-EPA environments. |
| RoHS-compliant (e3 suffix) | Lead-free matte-tin plating meets EU Directive 2011/65/EU and China RoHS II - supports export compliance for CE-marked equipment. |
| High surge current capability | 350 A peak rating enables single-device transient voltage suppression in 24 V/48 V industrial control inputs without external TVS stacking. |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback reference voltage in isolated DC–DC converter secondary-side error amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 60 V setpoint to optocoupler input or TL431 comparator. Use Value: Maintains ±0.5 V regulation over 5–100 mA load range due to 40 Ω ZZ, enabling <1% output voltage drift across line/load variations. |
Use Scenario: Clamping induced transients on 48 V telecom distribution bus during hot-swap insertion. IC Role / Device Role / Timing Role: Passive crowbar element absorbing energy from inductive kickback or lightning-induced surges. Use Value: Withstands 350 A 8.3 ms half-sine surge without degradation, eliminating need for parallel TVS arrays in space-constrained base stations. |
| Automotive Engine Control Unit (ECU) | Test Equipment Reference Source |
Use Scenario: Providing stable bias voltage for sensor signal conditioning circuitry exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Temperature-stable voltage reference for analog front-end gain-setting resistors and ADC reference dividers. Use Value: Operates reliably from –40 °C to +125 °C with <2.2 V ΔVZ across full current range - meets AEC-Q200 Grade 1 requirements. |
Use Scenario: Calibrating multimeter internal reference circuits requiring traceable, low-drift DC voltage standards. IC Role / Device Role / Timing Role: Primary shunt reference source in benchtop calibration fixtures and automated test systems. Use Value: Delivers 60 V ±3 V regulation with <0.5 μA leakage at 45 V - enables sub-ppm measurement uncertainty in metrology-grade instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5371B | Same 60 V, ±5%, 5 W rating but with SnPb plating and no e3/RoHS designation; TR8 tape-and-reel not standard - bulk or ammo pack only. | Acceptable where RoHS exemption applies (e.g., legacy military repair); unsuitable for new CE-marked designs. | Select 1N5371B only if leaded solder process is mandated and environmental compliance is waived. |
| SMBJ5371B | Surface-mount SMB package; identical 60 V/±5%/5 W specs; 100% surge current rating (350 A) retained; thermal resistance higher (junction-to-ambient ≈ 100 °C/W). | Used in space-constrained PCBs where axial leads are impractical; requires thermal pad design and reflow profile optimization. | Choose SMBJ5371B when board real estate is limited and thermal management via copper pour is feasible. |
Compared with 1N5371E3/TR8, 1N5371B lacks RoHS compliance and tape-and-reel packaging, while SMBJ5371B trades axial-mount simplicity for SMT compatibility and demands stricter thermal layout - both require validation of mechanical fit and thermal performance in final assembly.
Availability
1N5371E3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECU voltage references, and test equipment calibration requiring stable component supply, RoHS compliance, and tape-and-reel automation support.
Supply support for 1N5371E3/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 specifically for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5371E3/TR8?
The 1N5371E3/TR8 has a nominal Zener voltage of 60 V with a ±5% tolerance, consistent with the "B" suffix designation in the 1N53xx family. This means the actual measured VZ falls between 57 V and 63 V at 20 mA test current and 25 °C lead temperature, as confirmed in Microsemi's REV D datasheet Table on page 2.
Does the 1N5371E3/TR8 meet RoHS requirements?
Yes, the "e3" suffix in 1N5371E3/TR8 explicitly denotes RoHS compliance per EU Directive 2011/65/EU and China RoHS II. The device uses annealed matte-tin plating instead of tin-lead, and its UL94V-0 epoxy body contains no restricted substances above threshold limits.
What is the maximum surge current rating for the 1N5371E3/TR8?
The 1N5371E3/TR8 is rated for 350 A peak non-recurrent surge current (IZSM) in an 8.3 ms half-sine waveform, as specified in the Electrical Characteristics table. This rating assumes proper PCB layout and adequate lead length (≥10 mm) to avoid localized overheating during transient events.
How does thermal derating affect the 1N5371E3/TR8's power dissipation?
The 1N5371E3/TR8 delivers full 5.0 W only at 25 °C lead temperature (TL). Above that, power must be linearly derated at 40 mW/°C - e.g., at TL = 75 °C, maximum allowable power drops to 3.0 W. Derating curves are shown in Figure 1 of the official datasheet.
What does the "TR8" suffix indicate in 1N5371E3/TR8?
The "TR8" suffix specifies EIA-296 compliant tape-and-reel packaging containing 800 units per reel. This format enables automated pick-and-place assembly and is distinct from bulk or ammo-pack variants. The "e3" and "TR8" suffixes coexist without conflict per Microsemi's packaging guidelines.
1N5371E3/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:
- ±20%
- 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
1N5371E3/TR8 FAQ
1.How can I place an order for 1N5371E3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371E3/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 1N5371E3/TR8 reliable?
The price and inventory of 1N5371E3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371E3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5371E3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5371E3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5371E3/TR8?
1N5371E3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371E3/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 1N5371E3/TR8?
For technical support, including 1N5371E3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371E3/TR8 requirements.
6.How does Aetrix verify that 1N5371E3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5371E3/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 1N5371E3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5371E3/TR8?
All 1N5371E3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371E3/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 1N5371E3/TR8 part is unused and in its original packaging.
Return procedure for 1N5371E3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371E3/TR8 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
