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Microchip Technology 1N5371A/TR12
- Part No.:
- 1N5371A/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371A/TR12.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,641
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Product details
Overview
1N5371A/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal zener voltage of 60 V, ±10% tolerance (A suffix), 20 mA test current, 40 Ω dynamic impedance at IZT, and maximum reverse current of 0.5 μA at 45 V. It regulates voltage in power supply feedback loops, overvoltage protection circuits, and reference voltage generation for industrial power converters.
For engineers reviewing the 1N5371A/TR12 datasheet, 1N5371A/TR12 pinout, 1N5371A/TR12 application, or 1N5371A/TR12 equivalent, key selection criteria include its 60 V regulation point, 5 W steady-state power capability at TL < 25°C with 3/8" lead length, low 0.5 μA leakage at VR = 45 V, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates as a voltage reference by maintaining a stable 60 V across its terminals under reverse bias when current exceeds the knee region (IZK ≈ 1 mA). Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with minimal heatsinking-critical for compact industrial power supplies.
The 1N5371A/TR12 exhibits 2.2 V voltage regulation (ΔVZ) between 10% and 50% of IZM, confirming tight regulation stability across operating current range. Its 79 Ω dynamic impedance at 1 mA (ZZK) and 40 Ω at 20 mA (ZZ) support precision reference use where load-induced voltage drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±10% - defines precise regulation threshold for overvoltage clamping and reference generation |
| Test Current (IZT) | 20 mA - operating point at which VZ and ZZ are specified; sets minimum stable regulation current |
| Dynamic Impedance (ZZ) | 40 Ω at IZT - low impedance ensures minimal voltage shift under varying load current |
| Max Reverse Current (IR) | 0.5 μA at VR = 45 V - ultra-low leakage preserves accuracy in high-impedance reference nodes |
| Power Dissipation (Pd) | 5.0 W at TL < 25°C (3/8" lead length) - enables robust voltage regulation without external heatsink in space-constrained designs |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - allows direct thermal path to PCB copper or chassis for sustained 5 W operation |
| Surge Current (IZSM) | 350 A (8.3 ms half-sine) - withstands transient overvoltage events like lightning-induced surges |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-201AD; void-free UL94V-0 epoxy body; cathode indicated by band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to system ground or common return; forms low-impedance path during forward bias or reference biasing |
| Cathode | Zener regulation terminal / Voltage reference output | Banded end; connected to regulated node (e.g., feedback divider tap); maintains 60 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 5 W Zener | Guarantees standardized mechanical dimensions, thermal performance, and electrical behavior across suppliers |
| Moisture sensitivity Level 1 | No dry pack required-reduces handling cost and eliminates bake-out before assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during manufacturing and field service |
| RoHS-compliant (e3 suffix) | Meets global environmental compliance requirements without sacrificing electrical or thermal performance |
| High surge current rating (350 A) | Provides inherent transient immunity in unregulated input stages without additional TVS devices |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback converter feedback loop via optocoupler-coupled divider. IC Role / Device Role / Timing Role: Zener reference node defining precise 60 V threshold for error amplifier biasing. Use Value: Maintains ±10% output regulation across line/load/temperature with only 2.2 V ΔVZ variation from 2 mA to 100 mA. |
Use Scenario: Clamps DC bus voltage during regenerative braking in motor drives to prevent IGBT overvoltage failure. IC Role / Device Role / Timing Role: Passive crowbar element absorbing energy from inductive kickback. Use Value: Withstands 350 A surge (8.3 ms) while holding voltage ≤62.2 V, protecting downstream 650 V rated switches. |
| Programmable Voltage Reference | Field Instrument Calibration |
Use Scenario: Serves as primary reference in portable multimeter front-end ADC bias network. IC Role / Device Role / Timing Role: Stable 60 V source for resistor-divider scaling to 5 V or 10 V internal references. Use Value: 0.5 μA IR at 45 V ensures negligible current draw from high-Z divider, preserving accuracy. |
Use Scenario: Provides traceable 60 V calibration point in handheld process calibrators used in oil & gas field maintenance. IC Role / Device Role / Timing Role: Primary voltage standard against which DMMs and transmitters are adjusted. Use Value: ±10% tolerance and 25 °C/W RθJL enable stable output during extended field use without active temperature compensation. |
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/TR12 | ±5% tolerance (B suffix) vs. ±10% (A suffix); same VZ, IZT, ZZ, and package | Required where tighter regulation tolerance is needed for precision feedback or calibration | Select 1N5371B/TR12 if system-level voltage accuracy demands <±5% deviation at 60 V |
| 1N5371C/TR12 | ±2% tolerance (C suffix); otherwise identical electrical and thermal specs | Suitable for metrology-grade references or high-reliability aerospace power monitors | Choose 1N5371C/TR12 only when calibration traceability requires sub-2% initial tolerance and long-term stability |
Compared with 1N5371A/TR12, the B and C variants offer progressively tighter voltage tolerances (±5% and ±2%) without altering power rating, thermal resistance, or surge capability-enabling design reuse with improved accuracy where board space and thermal layout remain unchanged.
Availability
1N5371A/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and portable test equipment requiring stable component supply with consistent 60 V regulation performance and RoHS compliance.
Supply support for 1N5371A/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 5 W voltage regulation in harsh-environment power systems where thermal stability, surge resilience, and long-term parameter consistency are critical.
FAQ
What is the zener voltage tolerance of the 1N5371A/TR12?
The 1N5371A/TR12 has a nominal zener voltage of 60 V with a tolerance of ±10%, as indicated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ at 20 mA test current falls within 54 V to 66 V at 25°C lead temperature. The tolerance directly impacts regulation accuracy in feedback networks and must be accounted for in worst-case circuit analysis.
Does the 1N5371A/TR12 require dry packing or baking before PCB assembly?
No, the 1N5371A/TR12 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not hygroscopic and does not require dry packing or pre-assembly baking. This simplifies manufacturing logistics and eliminates risk of popcorning during reflow, supporting high-yield automated assembly of industrial control boards.
What is the maximum continuous power dissipation for the 1N5371A/TR12 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz copper, 4 mm² pads, 1 mm track width, 25 mm length), the 1N5371A/TR12 dissipates up to 1.47 W continuously at 25°C ambient temperature. This derated value reflects its 85°C/W junction-to-ambient thermal resistance-significantly lower than its 25°C/W junction-to-lead rating, emphasizing the importance of lead-length thermal path optimization.
Can the 1N5371A/TR12 be used as a replacement for the 1N5371B/TR12?
The 1N5371A/TR12 can serve as a functional alternative to the 1N5371B/TR12 in applications tolerant of ±10% voltage variation instead of ±5%, but it is not a drop-in replacement where tight regulation is required. Both share identical package, pinout, power rating, and thermal characteristics-only the VZ tolerance differs due to the A vs. B suffix.
What is the surge current rating of the 1N5371A/TR12 and how is it defined?
The 1N5371A/TR12 has a peak non-recurrent surge current rating of 350 A, defined per Microsemi as the maximum amplitude of an 8.3 ms half-sine waveform. This rating validates its use in transient suppression roles-for example, clamping inductive kickback in relay drivers-without degradation, provided surge duty cycle remains infrequent and average power stays within 5 W limits.
1N5371A/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:
- ±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
1N5371A/TR12 FAQ
1.How can I place an order for 1N5371A/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371A/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 1N5371A/TR12 reliable?
The price and inventory of 1N5371A/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371A/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5371A/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5371A/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5371A/TR12?
1N5371A/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371A/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 1N5371A/TR12?
For technical support, including 1N5371A/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371A/TR12 requirements.
6.How does Aetrix verify that 1N5371A/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5371A/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 1N5371A/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5371A/TR12?
All 1N5371A/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371A/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 1N5371A/TR12 part is unused and in its original packaging.
Return procedure for 1N5371A/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371A/TR12 Tags
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