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Microchip Technology 1N5371/TR12
- Part No.:
- 1N5371/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371/TR12.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,441
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Product details
Overview
1N5371/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 60 V, ±5% tolerance (B suffix), maximum dynamic impedance of 40 Ω at 20 mA test current, 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 power supply feedback loops.
For engineers reviewing the 1N5371/TR12 datasheet, 1N5371/TR12 pinout, 1N5371/TR12 application, or 1N5371/TR12 equivalent, this page delivers verified electrical specs, thermal derating behavior, JEDEC T-18 package details, RoHS-compliant plating, and direct alternatives with documented voltage/tolerance/IZM differences.
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 regulation stability relies on low ΔVZ (2.2 V) between 10% and 50% of IZM and minimal voltage drift across temperature due to its 25 °C/W junction-to-lead thermal resistance at 10 mm lead length.
The device achieves stable 60 V regulation under steady-state DC currents up to 350 mA when adequately heat-sunk, with surge capability of 350 A (8.3 ms half-sine) and forward voltage ≤1.2 V at 1.0 A. Its moisture sensitivity level is IPC/JEDEC Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±5% - precise regulation point for feedback networks and clamp thresholds |
| Test Current (IZT) | 20 mA - standardized bias point for VZ measurement and impedance characterization |
| Dynamic Impedance (ZZ) | 40 Ω max at IZT - low AC impedance ensures minimal voltage shift under load transients |
| Max Reverse Current (IR) | 0.5 μA at 45.5 V - tight leakage enables high-impedance sensing and low-power standby operation |
| Max Regulator Current (IZM) | 350 mA - maximum continuous DC current at 25°C lead temperature with proper heatsinking |
| Voltage Regulation (ΔVZ) | 2.2 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Power Dissipation (PD) | 5.0 W at TL = 25°C - rated steady-state power handling with 10 mm lead length from body |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables thermal modeling for PCB layout and heatsink sizing |
Pinout & Package
Package: JEDEC T-18 axial-leaded plastic encapsulated case per MIL-PRF-19500, void-free UL94V-0 epoxy body, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current entry terminal in forward bias; reference node in reverse-bias regulation | Connected to lower-potential side of regulated circuit; defines ground-referenced Zener orientation |
| Cathode (banded end) | Current exit terminal in forward bias; regulated output node in reverse bias | Connected to higher-potential side (e.g., feedback node); voltage at this terminal clamps to 60 V ±5% |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Guarantees mechanical and electrical interchangeability across authorized manufacturers |
| ±5% voltage tolerance (B suffix) | Enables tighter regulation than ±10% or ±20% variants without premium cost of ±1% parts |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating, no lead or hazardous substances |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life constraints during SMT or manual assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model discharges without parameter shift or failure, simplifying handling |
| High surge current rating (350 A) | Survives transient overvoltages such as lightning-induced surges or inductive kickback |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Clamp for DC Bus |
|---|---|
Use Scenario: Used in TL431-based or discrete op-amp feedback networks to regulate 60 V output rails in telecom and industrial SMPS. IC Role / Device Role / Timing Role: Zener reference element setting precise error amplifier threshold; replaces higher-cost voltage references where ±5% accuracy suffices. Use Value: Delivers stable 60 V reference with <2.2 V regulation spread across operating current range, reducing output ripple and improving load regulation. | Use Scenario: Placed across 48 V DC bus lines to protect downstream converters from transient overvoltage events exceeding 60 V. IC Role / Device Role / Timing Role: Passive shunt clamp absorbing surge energy until crowbar or shutdown activates; operates independently of control logic. Use Value: Withstands 350 A surge (8.3 ms) and exhibits only 0.5 μA leakage at 45.5 V, minimizing standby loss while ensuring fast response to overvoltage. |
| Programmable Voltage Reference | Industrial Sensor Excitation |
Use Scenario: Configured with series resistor to generate stable 60 V excitation for high-voltage piezoresistive sensors or isolation amplifiers. IC Role / Device Role / Timing Role: Primary voltage reference source; selected for predictable knee characteristics and low ΔVZ under varying load conditions. Use Value: Maintains regulation within ±5% across 20–350 mA operating range, enabling accurate sensor scaling without active regulation circuitry. | Use Scenario: Supplies regulated bias voltage to strain-gauge bridges or RTD signal chains requiring stable excitation above 40 V. IC Role / Device Role / Timing Role: Precision DC reference providing fixed potential to sensor elements; leverages low thermal resistance (25 °C/W) for ambient-temperature stability. Use Value: Achieves <0.4% typical VZ drift over –40°C to +85°C due to low RθJL, improving measurement repeatability in uncontrolled environments. |
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 ±5%, but in bulk packaging (no TR12 tape-and-reel); identical electrical specs and T-18 package | No reel logistics support; unsuitable for automated pick-and-place | Select 1N5371/TR12 for SMT production; choose 1N5371B for prototyping or hand-soldered repair |
| MMSZ5259ET1G | Surface-mount SOD-123 package; 62 V ±5%, 500 mW rating; ZZ = 110 Ω at 20 mA | Lower power, smaller footprint, higher impedance - not drop-in for 5 W thermal loads | Use MMSZ5259ET1G only in low-current (<50 mA), space-constrained designs; retain 1N5371/TR12 for >100 mA regulation or surge immunity |
Compared with 1N5371B and MMSZ5259ET1G, the 1N5371/TR12 uniquely combines 5 W power handling, axial-leaded mechanical robustness, tape-and-reel automation compatibility, and 350 A surge rating - making it the sole choice for industrial power supply clamping where thermal mass and reliability outweigh miniaturization.
Availability
1N5371/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, programmable voltage references, and industrial sensor excitation requiring stable component supply and full traceability.
Supply support for 1N5371/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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems, emphasizing thermal performance, surge resilience, and JEDEC-standardized interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5371/TR12?
The 1N5371/TR12 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its full designation. This means its actual regulation voltage falls between 57.0 V and 63.0 V at 20 mA test current and 25°C lead temperature, as confirmed in Microsemi's official datasheet revision D (2008).
Does the 1N5371/TR12 require dry packing before use?
No, the 1N5371/TR12 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored indefinitely at ambient conditions without desiccant or humidity-controlled packaging - a key advantage for long-term inventory and manual assembly workflows.
What is the maximum continuous current the 1N5371/TR12 can handle?
The 1N5371/TR12 supports a maximum continuous Zener current (IZM) of 350 mA at 25°C lead temperature with adequate heatsinking (10 mm lead length). At higher ambient temperatures, derating applies per Figure 1 in the datasheet - e.g., ~250 mA at TL = 75°C.
Can the 1N5371/TR12 be used as a direct replacement for the 1N5371B?
Yes, the 1N5371/TR12 is electrically and mechanically identical to the 1N5371B, differing only in packaging: TR12 denotes EIA-296 tape-and-reel format (12-inch reel), while 1N5371B is supplied in bulk. Both share the same T-18 axial package, ±5% tolerance, 60 V rating, and full specification compliance.
What is the surge current rating of the 1N5371/TR12 and how is it defined?
The 1N5371/TR12 has a peak non-recurrent surge current rating (IZSM) of 350 A, defined as the maximum amplitude of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without degradation - critical for protecting downstream circuitry from line surges or inductive switching spikes.
1N5371/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:
- ±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
1N5371/TR12 FAQ
1.How can I place an order for 1N5371/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371/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 1N5371/TR12 reliable?
The price and inventory of 1N5371/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5371/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5371/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5371/TR12?
1N5371/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371/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 1N5371/TR12?
For technical support, including 1N5371/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371/TR12 requirements.
6.How does Aetrix verify that 1N5371/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5371/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 1N5371/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5371/TR12?
All 1N5371/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371/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 1N5371/TR12 part is unused and in its original packaging.
Return procedure for 1N5371/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371/TR12 Tags
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