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Microchip Technology 1N5372AE3/TR12
- Part No.:
- 1N5372AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5372AE3/TR12.pdf
- Description:
- DIODE ZENER 62V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,016
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Product details
Overview
1N5372AE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 62 V, ±10% tolerance (A suffix), 20 mA test current, 42 Ω dynamic impedance at IZT, and maximum reverse current of 0.5 μA at 47.1 V. 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 1N5372AE3/TR12 datasheet, 1N5372AE3/TR12 pinout, 1N5372AE3/TR12 application, or 1N5372AE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (400 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator operating in reverse-biased breakdown mode. Its regulation stability relies on low dynamic impedance (42 Ω) at 20 mA and minimal voltage variation (ΔVZ = 2.1 V) between 10% and 50% of IZM.
The 1N5372AE3/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band polarity marking and is rated for 5 W steady-state dissipation at TL < 25 °C with 3/8″ lead length - not ambient-rated without heat sinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±10% - defines regulated output voltage under specified test conditions (IZT = 20 mA). |
| Power Dissipation | 5.0 W at TL < 25 °C - requires mechanical heat sinking via leads; derates to 1.47 W at TA = 25 °C on FR4 board. |
| Dynamic Impedance (ZZ) | 42 Ω at IZT = 20 mA - determines regulation sensitivity to load current changes. |
| Max Reverse Current (IR) | 0.5 μA at VR = 47.1 V - ensures low leakage below knee voltage, critical for standby power integrity. |
| Surge Current (IZSM) | 400 A (8.3 ms half-sine) - supports transient overvoltage clamping in surge protection circuits. |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design using lead conduction, not PCB copper area alone. |
| Voltage Regulation (ΔVZ) | 2.1 V - measured between 10% and 50% of IZM (630 mA), quantifies regulation linearity. |
Pinout & Package
Package: Axial-leaded T-18 plastic case with cathode indicated by colored 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 | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse bias applied across anode–cathode to enable regulation. |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input rail; maintains stable 62 V relative to anode when reverse biased above VZ. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB series mechanical and electrical definitions for interchangeability. |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out before assembly. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - withstands electrostatic discharge without parameter shift or failure. |
| RoHS Compliant (e3) | Lead-free matte-tin plating meets EU Directive 2011/65/EU - suitable for environmentally regulated production. |
| Tape & Reel Packaging (TR12) | EIA-296 compliant 12 mm tape - enables automated SMT placement despite axial form factor via carrier tape adaptation. |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback reference in isolated DC-DC converter secondary-side error amplifiers. IC Role / Device Role / Timing Role: Zener diode providing precise 62 V reference to optocoupler input, enabling tight output voltage regulation. Use Value: Low ΔVZ (2.1 V) and stable ZZ (42 Ω) minimize output drift across line/load variations. | Use Scenario: Protecting 48 V telecom line interface ICs from lightning-induced surges. IC Role / Device Role / Timing Role: Shunt clamp absorbing transient energy above 62 V threshold before downstream components reach breakdown. Use Value: 400 A surge rating (8.3 ms) and low thermal resistance (25 °C/W) prevent thermal runaway during repeated transients. |
| Programmable Voltage Reference | Field-Adjustable Sensor Biasing |
Use Scenario: Setting adjustable trip point in analog comparator-based battery monitoring circuits. IC Role / Device Role / Timing Role: Zener node establishes stable threshold voltage for comparator input against which battery voltage is compared. Use Value: ±10% tolerance allows calibration trimming while maintaining robustness against temperature drift (–65 °C to +150 °C). | Use Scenario: Providing bias voltage to high-impedance piezoresistive pressure sensors in harsh-environment industrial gauges. IC Role / Device Role / Timing Role: Low-leakage (0.5 μA at 47.1 V) Zener supplies stable excitation voltage independent of supply ripple. Use Value: Minimal IR ensures sensor bridge accuracy remains unaffected by Zener self-heating or leakage-induced offset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5372B | Same 62 V nominal, but ±5% tolerance (B suffix) vs. ±10% (A suffix); identical package, thermal, and surge specs. | Higher precision regulation required where tighter voltage control is critical, e.g., metrology-grade references. | Select 1N5372B when system-level tolerance budget demands ≤±5% Zener variation; otherwise 1N5372AE3/TR12 offers cost-effective standard tolerance. |
| MMBZ5255BS | Surface-mount SOD-123 package; 62 V ±5%, 200 mW rating - not power-scalable; no TR tape option. | Low-power portable electronics where board space and weight constrain axial devices. | Choose MMBZ5255BS only for space-constrained, low-current (<50 mA) applications; cannot replace 1N5372AE3/TR12 in 5 W power roles. |
Compared with 1N5372B and MMBZ5255BS, the 1N5372AE3/TR12 uniquely combines axial-leaded serviceability, 5 W power handling, RoHS compliance, and EIA-296 tape & reel support - making it optimal for industrial power modules requiring field-replaceable, high-surge-capable Zeners.
Availability
1N5372AE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protectors, programmable voltage references, and field-deployable sensor systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N5372AE3/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 timing solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed for ruggedized voltage regulation in mission-critical power systems where thermal stability, surge resilience, and long-term parametric consistency are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5372AE3/TR12?
The 1N5372AE3/TR12 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its actual regulation voltage falls between 55.8 V and 68.2 V at 20 mA test current and 25 °C. The tolerance is verified per JEDEC standards and applies across the full operating temperature range of –65 °C to +150 °C.
Can the 1N5372AE3/TR12 be used without a heatsink?
The 1N5372AE3/TR12 can dissipate up to 5.0 W only when lead temperature (TL) is maintained below 25 °C - typically requiring mechanical heat sinking via 3/8″ (10 mm) lead length. At ambient temperature (TA) = 25 °C on FR4 board, its steady-state rating drops to 1.47 W. Therefore, continuous 5 W operation without heatsinking exceeds safe thermal limits and risks parametric shift or failure.
What does the "e3" and "TR12" suffix mean in 1N5372AE3/TR12?
The "e3" suffix indicates RoHS-compliant matte-tin plating per EU Directive 2011/65/EU, replacing traditional tin-lead finishes. The "TR12" denotes EIA-296 standard tape-and-reel packaging in 12 mm carrier tape - enabling automated pick-and-place assembly despite the axial-leaded T-18 package geometry.
How is the cathode identified on the 1N5372AE3/TR12?
The cathode of the 1N5372AE3/TR12 is marked by a distinct color band on the body of the T-18 package. During operation, the banded end must be held at a higher potential than the anode (unbanded end) to achieve reverse-bias Zener breakdown and voltage regulation. Polarity misconnection results in forward conduction (~1.2 V drop) rather than regulation.
What is the maximum surge current rating for the 1N5372AE3/TR12?
The 1N5372AE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 400 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating assumes proper mounting and thermal path; exceeding this value, even briefly, may cause irreversible junction damage due to localized overheating.
1N5372AE3/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):
- 62 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 42 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 44.6 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
1N5372AE3/TR12 FAQ
1.How can I place an order for 1N5372AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5372AE3/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 1N5372AE3/TR12 reliable?
The price and inventory of 1N5372AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5372AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5372AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5372AE3/TR12 transactions.
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4.How is shipping managed for 1N5372AE3/TR12?
1N5372AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5372AE3/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 1N5372AE3/TR12?
For technical support, including 1N5372AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5372AE3/TR12 requirements.
6.How does Aetrix verify that 1N5372AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5372AE3/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 1N5372AE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5372AE3/TR12?
All 1N5372AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5372AE3/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 1N5372AE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5372AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5372AE3/TR12 Tags
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