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Microchip Technology 1N5371E3/TR12
- Part No.:
- 1N5371E3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5371E3/TR12.pdf
- Description:
- DIODE ZENER 60V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,499
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Product details
Overview
1N5371E3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal zener voltage of 60 V, ±5% tolerance (B-suffix equivalent), 20 mA test current, 40 Ω dynamic impedance at IZT, and maximum reverse current of 0.5 µA at 45.5 V. It regulates voltage in power supply reference and overvoltage protection circuits operating from −65 °C to +150 °C.
For engineers reviewing the 1N5371E3/TR12 datasheet, 1N5371E3/TR12 pinout, 1N5371E3/TR12 application, or 1N5371E3/TR12 equivalent, key selection criteria include its 60 V regulation accuracy, 5 W steady-state power capability with adequate heat sinking, low 0.5 µA leakage at rated VR, and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This device operates as a precision voltage reference in shunt-regulator configurations, maintaining stable output voltage across wide current ranges (20 mA IZT to 350 mA IZM) and temperature extremes (−65 °C to +150 °C). Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation when leads are mounted 10 mm from body.
The 1N5371E3/TR12 exhibits 2.2 V voltage regulation (ΔVZ) between 10% and 50% of IZM, and 79 Ω dynamic knee impedance (ZZK) at 1 mA-critical for low-noise biasing and feedback loop stability in analog power control circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 60 V ±5% - precise regulation point for 52–68 V system references |
| Test Current (IZT) | 20 mA - standard bias point for measuring VZ and ZZ |
| Dynamic Impedance (ZZ) | 40 Ω at IZT - low AC impedance ensures minimal voltage variation under load transients |
| Max Reverse Current (IR) | 0.5 µA at 45.5 V - ultra-low leakage preserves accuracy in high-impedance sensing nodes |
| Max Regulator Current (IZM) | 350 mA - supports high-current shunt regulation when adequately heat sunk |
| Surge Current (IZSM) | 350 A (8.3 ms half-sine) - withstands transient overvoltage events without failure |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables full 5 W dissipation with minimal lead-length thermal penalty |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026; weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink terminal in reverse-biased operation | Connected to lower-potential node (e.g., ground or return path) during regulation |
| Cathode | Current source terminal in reverse-biased operation | Banded end; connected to regulated voltage node; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized mechanical dimensions and electrical behavior across global supply chain |
| Moisture sensitivity Level 1 | No dry pack required-reduces handling cost and eliminates bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during board assembly and testing |
| High surge current rating (350 A) | Provides robust transient immunity in industrial power rails without external TVS |
| Stable ΔVZ = 2.2 V | Guarantees ≤2.2 V variation across 10–50% of IZM, critical for precision feedback loops |
Applications
| Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side error amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 60 V reference for optocoupler-driven regulation. Use Value: Maintains ±5% output regulation across line/load/temperature with <0.5 µA leakage minimizing bias error. |
Use Scenario: Clamping transient spikes on 48 V telecom distribution bus during lightning-induced surges. IC Role / Device Role / Timing Role: Passive overvoltage clamp absorbing energy up to 350 A (8.3 ms) without degradation. Use Value: Prevents downstream IC damage while maintaining system uptime-no active control or timing function required. |
| Industrial Sensor Excitation | Programmable Current Source Bias |
Use Scenario: Providing stable excitation voltage for 4–20 mA loop-powered pressure transducers in oil & gas field instruments. IC Role / Device Role / Timing Role: Precision voltage reference setting loop compliance voltage in analog front-end circuitry. Use Value: Enables accurate sensor scaling over −40 °C to +85 °C ambient due to low ΔVZ and wide operating temperature range. |
Use Scenario: Setting reference voltage for LM334-based programmable current sources in calibration equipment. IC Role / Device Role / Timing Role: Fixed 60 V reference establishing ISET = VREF/RSET in two-terminal current sources. Use Value: Delivers 0.5% absolute accuracy (±5% VZ × 1% RSET) with negligible temperature drift contribution from Zener. |
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 SnPb lead finish (non-RoHS); no e3 suffix; TR12 tape/reel not standard | Acceptable where RoHS exemption applies and reel packaging is not required | Select 1N5371B only if legacy SnPb assembly process is used and tape-and-reel is unnecessary |
| MMSZ5257ET1G | Surface-mount SOD-123 package; 62 V ±5%; 500 mW rating; 100 Ω ZZ; 100 nA IR at 49.4 V | Suitable for space-constrained PCBs but cannot handle >100 mA continuous current | Choose MMSZ5257ET1G only for low-power, high-density designs where 5 W dissipation is unnecessary |
Compared with 1N5371E3/TR12, 1N5371B offers identical electrical performance but lacks RoHS compliance and tape-and-reel packaging, while MMSZ5257ET1G trades power handling and thermal robustness for miniaturization-neither is pin-compatible, and both require layout changes.
Availability
1N5371E3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom overvoltage protection, and sensor excitation circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5371E3/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 1N53xx series was designed specifically for ruggedized 5 W axial Zener regulation in harsh-environment power systems-emphasizing thermal robustness, surge immunity, and moisture-insensitive packaging.
FAQ
What is the zener voltage tolerance of the 1N5371E3/TR12?
The 1N5371E3/TR12 has a nominal zener voltage of 60 V with ±5% tolerance, confirmed by the "B" designation in its base family (1N5371B) and consistent with Microsemi's documented suffix coding-"B" indicates ±5%, and the e3/TR12 variant retains this electrical specification while adding RoHS compliance and tape-and-reel packaging.
Does the 1N5371E3/TR12 require derating above 25 °C ambient?
Yes-the 1N5371E3/TR12 must be derated linearly above 25 °C ambient when mounted on FR4 with specified copper pads; its steady-state power drops from 5.0 W at 25 °C to 1.47 W at 25 °C ambient, with full derating to zero at 150 °C per Figure 1 in the official datasheet. Lead-temperature derating (TL) applies separately at 3/8″ lead length.
What is the maximum surge current rating for the 1N5371E3/TR12?
The 1N5371E3/TR12 has a maximum non-recurrent surge current (IZSM) of 350 A, defined as the peak of an 8.3 ms half-sine waveform. This value is explicitly listed in the Electrical Characteristics table for type number 1N5371B (the base variant of 1N5371E3/TR12) and applies identically to the e3/TR12 version.
Can the 1N5371E3/TR12 be used in surface-mount designs?
No-the 1N5371E3/TR12 uses an axial-leaded T-18 package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5371B or SMBG5371B in DO-214AA/DO-214AB packages, which share the same 60 V ±5% regulation but differ in thermal performance and mounting method.
What does the "TR12" suffix indicate in 1N5371E3/TR12?
The "TR12" suffix denotes tape-and-reel packaging per EIA-296 standard, containing 12,000 units per reel. This is distinct from bulk or ammo-pack options and enables automated pick-and-place assembly; the "e3" prefix confirms RoHS-compliant matte-tin plating, making 1N5371E3/TR12 fully compliant with modern environmental regulations.
1N5371E3/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
1N5371E3/TR12 FAQ
1.How can I place an order for 1N5371E3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5371E3/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 1N5371E3/TR12 reliable?
The price and inventory of 1N5371E3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5371E3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5371E3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5371E3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5371E3/TR12?
1N5371E3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5371E3/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 1N5371E3/TR12?
For technical support, including 1N5371E3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5371E3/TR12 requirements.
6.How does Aetrix verify that 1N5371E3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5371E3/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 1N5371E3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5371E3/TR12?
All 1N5371E3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5371E3/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 1N5371E3/TR12 part is unused and in its original packaging.
Return procedure for 1N5371E3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5371E3/TR12 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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