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Microchip Technology 1N5371C/TR12
- Part No.:
- 1N5371C/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371C/TR12.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:9,051
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Product details
Overview
1N5371C/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with a 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 1N5371C/TR12 datasheet, 1N5371C/TR12 pinout, 1N5371C/TR12 application, or 1N5371C/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), steady-state power derating, reverse leakage at VR = 45 V, and compliance with MIL-PRF-19500 screening options.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse breakdown. Its Zener voltage is specified at 25°C with 20 mA test current (IZT), and its regulation stability is characterized by ΔVZ ≤ 2.2 V across 10–50% of IZM. The low 25 °C/W junction-to-lead thermal resistance enables high continuous current operation when mounted with ≥10 mm lead length from body.
It exhibits 0.5 μA maximum reverse current at VR = 45 V, 79 Ω maximum dynamic knee impedance at 1 mA (ZZK), and complies with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required. RoHS-compliant matte-tin plating and UL94V-0 epoxy encapsulation support reliable through-hole assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±2% at 20 mA - precise reference for feedback loops requiring tight regulation |
| Power Dissipation (Pd) | 5.0 W at TL < 25°C - supports robust overvoltage clamping in 24/48 V systems |
| Dynamic Impedance (ZZ) | 40 Ω max at IZT - ensures minimal output voltage variation under load transients |
| Surge Current (IZSM) | 350 A (8.3 ms half-sine) - withstands lightning-induced or inductive-switching surges |
| Thermal Resistance | 25 °C/W junction-to-lead - enables >3.5 A DC operation with adequate heatsinking |
| Reverse Leakage (IR) | 0.5 μA max at VR = 45 V - maintains low standby power in always-on circuits |
| Voltage Regulation (ΔVZ) | 2.2 V max - quantifies worst-case drift between 10% and 50% of max Zener current |
Pinout & Package
Package: Axial-leaded T-18 molded epoxy case (JEDEC DO-201AD). Cathode indicated by color band; diode operated with banded end positive relative to unbanded end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lower-potential rail; defines Zener bias polarity |
| Cathode (banded end) | Regulated output node | Provides stable 60 V reference when reverse-biased; sinks current into load |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop control vs. ±5% (B) or ±10% (A) variants |
| Level 1 moisture sensitivity (J-STD-020B) | Eliminates dry-pack requirement and bake-out prior to soldering |
| RoHS-compliant matte-tin plating | Ensures solderability and reliability per modern environmental directives |
| UL94V-0 epoxy encapsulation | Provides flame-retardant mechanical protection for industrial environments |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions during manual assembly and testing |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated 48 V DC-DC converters using optocoupler-based feedback. IC Role / Device Role / Timing Role: Precision 60 V Zener reference providing stable bias to TL431 or optocoupler LED. Use Value: ±2% tolerance ensures output accuracy within ±0.5% over line/load/temperature, reducing need for post-production trimming. | Use Scenario: Clamping transient spikes on 48 V battery bus in telecom rectifier modules. IC Role / Device Role / Timing Role: Shunt protector diverting surge energy above 60 V to ground before downstream MOSFETs fail. Use Value: 350 A surge rating handles 8.3 ms surges without degradation, extending system MTBF in harsh electrical environments. |
| Programmable Voltage Reference | Field-Serviceable Calibration Standard |
Use Scenario: Generating stable 60 V reference for 16-bit DAC calibration in automated test equipment. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source replacing bulkier IC references where size/cost matter. Use Value: 40 Ω dynamic impedance and 2.2 V ΔVZ ensure reference stability across 2–10 mA operating range, improving measurement repeatability. | Use Scenario: Replaceable reference element in portable multimeter calibration jigs. IC Role / Device Role / Timing Role: Field-swappable Zener standard traceable to NIST via ±2% initial tolerance and low long-term drift. Use Value: Axial T-18 package allows hand-solder replacement without rework stations; RoHS plating ensures compatibility with legacy repair workflows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5371B/TR12 | ±5% VZ tolerance (vs. ±2%); otherwise identical electrical specs and packaging | Acceptable where cost priority outweighs regulation precision; requires wider feedback loop margins | Select when budget constraints dominate and system-level calibration compensates for tolerance |
| SMBJ5371C | Surface-mount SMB package (vs. axial T-18); same 60 V ±2%, but 1.47 W FR4 board rating vs. 5 W lead-mounted | Used in space-constrained PCBs; not suitable for high-power dissipation without thermal pads | Choose only if layout mandates SMT and thermal design accommodates lower power rating |
Compared with 1N5371B/TR12, the 1N5371C/TR12 delivers tighter regulation for critical feedback paths, while SMBJ5371C trades axial-mount ruggedness and power handling for PCB area savings-neither is pin-compatible due to differing form factors and mounting methods.
Availability
1N5371C/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifiers, programmable instrumentation, and field-serviceable calibration tools requiring stable component supply and long-lifecycle support.
Supply support for 1N5371C/TR12 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, high-power Zener regulation in mission-critical power systems where thermal stability, surge resilience, and long-term parameter consistency are essential.
FAQ
What is the Zener voltage tolerance of the 1N5371C/TR12?
The 1N5371C/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix per Microsemi's documentation. This means its measured VZ at 20 mA and 25°C falls within 58.8 V to 61.2 V. This tighter tolerance improves accuracy in feedback networks compared to ±5% (B suffix) or ±10% (A suffix) variants of the same 1N5371 family.
Can the 1N5371C/TR12 be used in surface-mount designs?
No-the 1N5371C/TR12 uses an axial-leaded T-18 (DO-201AD) package and is intended for through-hole mounting. For surface-mount equivalents, Microsemi offers the SMBJ5371C in SMB package. While electrically similar, the SMBJ5371C has different thermal performance (1.47 W on FR4 vs. 5 W lead-mounted) and is not a drop-in replacement for the 1N5371C/TR12.
What is the maximum steady-state current the 1N5371C/TR12 can handle?
The 1N5371C/TR12 supports up to approximately 3.5 A DC current when adequately heat sunk-calculated from its 5 W power rating and 60 V VZ (IZM ≈ 5 W / 60 V ≈ 83 mA at full tolerance limit, but derated per thermal resistance). With 10 mm lead length from body and ambient <25°C, its 25 °C/W junction-to-lead resistance allows sustained operation near rated power without exceeding 150°C junction temperature.
Does the 1N5371C/TR12 require dry packing before reflow soldering?
No-the 1N5371C/TR12 has IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, meaning it is not hygroscopic and does not require dry packing or baking prior to soldering. Its void-free thermosetting epoxy body inherently resists moisture absorption, simplifying manufacturing logistics and reducing process risk.
Is the 1N5371C/TR12 RoHS compliant?
Yes-the "e3" designation in Microsemi's official documentation confirms RoHS compliance for the 1N5371C/TR12. It features annealed matte-tin plating on leads and meets EU Directive 2011/65/EU requirements. The "TR12" suffix indicates tape-and-reel packaging per EIA-296, which is compatible with automated placement equipment.
1N5371C/TR12 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
1N5371C/TR12 FAQ
1.How can I place an order for 1N5371C/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371C/TR12 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 1N5371C/TR12 reliable?
The price and inventory of 1N5371C/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371C/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5371C/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5371C/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5371C/TR12?
1N5371C/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371C/TR12 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 1N5371C/TR12?
For technical support, including 1N5371C/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371C/TR12 requirements.
6.How does Aetrix verify that 1N5371C/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5371C/TR12 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 1N5371C/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5371C/TR12?
All 1N5371C/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371C/TR12, 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 1N5371C/TR12 part is unused and in its original packaging.
Return procedure for 1N5371C/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371C/TR12 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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