My Inquiry
My Account
Microchip Technology 1N5371CE3/TR8
- Part No.:
- 1N5371CE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371CE3/TR8.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,115
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5371CE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 60 V, ±2% tolerance (C suffix), 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 1N5371CE3/TR8 datasheet, 1N5371CE3/TR8 pinout, 1N5371CE3/TR8 application, or 1N5371CE3/TR8 equivalent, this page delivers verified electrical specs, thermal derating behavior, RoHS-compliant plating details, and direct alternatives for stable 60 V regulation under high-surge conditions.
Technical Context
This Zener operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be held positive relative to the anode. Its 60 V nominal Zener voltage is specified at 20 mA test current (IZT) and measured at 25°C lead temperature (TL), with voltage regulation (ΔVZ) of 2.2 V defined as the difference between voltages at 10% and 50% of IZM.
Thermal design relies on junction-to-lead resistance of 25°C/W at 10 mm lead length; when mounted on FR4 with 4 mm² copper pads, junction-to-ambient rises to 85°C/W. Steady-state power drops to 1.47 W at TA = 25°C under that PCB condition, per Figure 1 derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±2% - precise regulation point for feedback loops and reference circuits |
| Test Current (IZT) | 20 mA - operating point where VZ and ZZ are guaranteed per JEDEC spec |
| Max Dynamic Impedance (ZZ) | 40 Ω at IZT - low AC impedance ensures minimal output voltage variation under load transients |
| Max Regulator Current (IZM) | 350 mA - maximum continuous DC current at TL = 25°C with adequate heat sinking |
| Peak Surge Current (IZSM) | 350 A - withstands non-repetitive 8.3 ms half-sine surges, e.g., from inductive switching |
| Voltage Regulation (ΔVZ) | 2.2 V - difference between VZ at 10% and 50% of IZM, indicating regulation linearity |
| Forward Voltage (VF) | 1.2 V max @ 1.0 A - defines conduction loss during forward bias, relevant for clamp configurations |
| Operating Temperature | –65°C to +150°C - supports deployment in automotive engine compartments and industrial enclosures |
Pinout & Package
Package: Axial-leaded T-18 molded epoxy case (JEDEC TO-204-AD), void-free UL94V-0 compliant body, 0.7 g weight, cathode indicated by band. Leads are RoHS-compliant annealed matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased current sink terminal | Connected to lower-potential node; carries full Zener current during regulation |
| Cathode | Reverse-biased voltage reference terminal | Banded end; held at regulated 60 V above anode; referenced to system ground or feedback node |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control vs. ±5% (B) or ±10% (A) variants, reducing need for trimming |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU without lead or hazardous substances, qualified per J-STD-020B Level 1 |
| 8.3 ms surge rating (350 A) | Protects downstream circuitry from transient overvoltages in motor drives and relay coils |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for pre-handling ESD safeguards during assembly or field service |
| Low thermal resistance (25°C/W junction-to-lead) | Allows 5 W dissipation with minimal heatsinking-only 3/8″ (10 mm) lead length required |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp for Relay Drivers |
|---|---|
Use Scenario: Provides stable 60 V reference for error amplifiers in isolated DC-DC converters rated up to 48 V input. IC Role / Device Role / Timing Role: Zener diode acting as two-terminal shunt voltage reference in feedback divider network. Use Value: ±2% tolerance ensures output voltage accuracy within ±0.6 V across temperature, reducing calibration overhead. | Use Scenario: Placed across relay coil terminals to suppress 150 V+ flyback spikes generated during de-energization. IC Role / Device Role / Timing Role: Passive clamp device absorbing inductive energy via controlled reverse breakdown. Use Value: 350 A surge rating handles repetitive 8.3 ms transients without degradation, extending relay contact life. |
| Automotive Engine Control Unit Protection | Programmable Logic Controller (PLC) Input Conditioning |
Use Scenario: Protects 5 V microcontroller I/O pins from battery dump load transients reaching 60 V during alternator regulation faults. IC Role / Device Role / Timing Role: Shunt limiter clamping supply rail to safe level before TVS activation. Use Value: –65°C to +150°C operating range matches under-hood ECU thermal envelope without derating. | Use Scenario: Used in 24 V DC input modules to regulate auxiliary 5 V logic rails and absorb field-wiring induced surges. IC Role / Device Role / Timing Role: Primary voltage regulator and surge absorber in front-end power conditioning stage. Use Value: 40 Ω dynamic impedance maintains <1 V output shift across 10–100 mA load changes, ensuring clean logic thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5371B | Same 60 V nominal VZ, but ±5% tolerance (B suffix) and 350 mA IZM; no RoHS compliance (no e3) | Lacks RoHS compliance; suitable only for legacy non-RoHS designs or cost-sensitive non-regulated markets | Select when RoHS is not required and ±5% regulation accuracy suffices for feedback stability |
| SMBJ5371CE3 | Surface-mount SMB package; identical 60 V ±2%, 20 mA IZT, 40 Ω ZZ, but lower 1.0 W Pd and 100 A IZSM | Designed for automated SMT assembly; unsuitable for high-power dissipation or high-surge environments | Choose for space-constrained PCBs where 5 W dissipation is managed externally or surge risk is low |
Compared with 1N5371B and SMBJ5371CE3, the 1N5371CE3/TR8 uniquely combines RoHS compliance, ±2% precision, 5 W power handling, and 350 A surge capability in an axial-leaded through-hole package-making it optimal for industrial and automotive applications demanding both accuracy and ruggedness.
Availability
1N5371CE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECU protection, and PLC input conditioning requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5371CE3/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 radiation-hardened components for aerospace, defense, and industrial markets.
The 1N53xx series was designed specifically for robust, high-power voltage regulation in harsh-environment systems where precision, surge resilience, and extended temperature operation are critical.
FAQ
What is the Zener voltage tolerance of the 1N5371CE3/TR8?
The 1N5371CE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its actual regulation voltage falls between 58.8 V and 61.2 V at 20 mA test current and 25°C lead temperature, enabling tighter feedback control than ±5% (B) or ±10% (A) variants.
Does the 1N5371CE3/TR8 require dry-pack moisture protection?
No, the 1N5371CE3/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not moisture-sensitive and does not require dry-pack packaging or baking prior to soldering. Its void-free epoxy encapsulation provides inherent moisture resistance.
What is the maximum continuous current the 1N5371CE3/TR8 can handle?
The 1N5371CE3/TR8 supports a maximum continuous Zener current (IZM) of 350 mA at TL = 25°C with 3/8″ (10 mm) lead length from the body. At ambient temperature (TA = 25°C) on FR4 board, steady-state power drops to 1.47 W, limiting usable current to approximately 24.5 mA without additional heatsinking.
Can the 1N5371CE3/TR8 be used as a replacement for the 1N5371B?
Yes, the 1N5371CE3/TR8 is functionally compatible with the 1N5371B-both regulate at 60 V-but differs in tolerance (±2% vs. ±5%) and RoHS compliance (e3 suffix). No PCB changes are needed, though system-level accuracy and compliance requirements must be revalidated.
What does the "TR8" suffix indicate in 1N5371CE3/TR8?
"TR8" indicates tape-and-reel packaging per EIA-296 standard, with 8 mm carrier tape width and component orientation optimized for automated pick-and-place assembly. The base part remains 1N5371CE3; TR8 adds logistics and handling specifications-not electrical or thermal changes.
1N5371CE3/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:
- ±2%
- 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
1N5371CE3/TR8 FAQ
1.How can I place an order for 1N5371CE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371CE3/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 1N5371CE3/TR8 reliable?
The price and inventory of 1N5371CE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371CE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5371CE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5371CE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5371CE3/TR8?
1N5371CE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371CE3/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 1N5371CE3/TR8?
For technical support, including 1N5371CE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371CE3/TR8 requirements.
6.How does Aetrix verify that 1N5371CE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5371CE3/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 1N5371CE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5371CE3/TR8?
All 1N5371CE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371CE3/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 1N5371CE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5371CE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371CE3/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…
