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Microchip Technology 1N5372BE3/TR12
- Part No.:
- 1N5372BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5372BE3/TR12.pdf
- Description:
- DIODE ZENER 62V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,263
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Product details
Overview
1N5372BE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 62 V, ±5% tolerance (B suffix), 20 mA test current (IZT), 42 Ω dynamic impedance (ZZ), and 400 A surge current rating (IZSM). 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 1N5372BE3/TR12 datasheet, 1N5372BE3/TR12 pinout, 1N5372BE3/TR12 application, or 1N5372BE3/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), steady-state power derating on FR4, reverse leakage at VR = 47.1 V, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage regulator in reverse-biased mode, maintaining stable output across wide current variation (IZM = 400 mA at TL = 25 °C). Its low dynamic impedance (42 Ω) and tight voltage regulation (ΔVZ = 2.1 V between 10% and 50% IZM) support stable reference performance under load transients.
The 1N5372BE3/TR12 uses void-free thermosetting epoxy encapsulation (UL94V-0), cathode band polarity marking, and is moisture-sensitive Level 1 per J-STD-020B - eliminating dry-pack requirements. It supports tape-and-reel packaging (TR12 suffix) and meets MIL-PRF-19500 screening options when prefixed with MQ/MX/MV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±5% - defines regulated output level under specified IZT = 20 mA; high-voltage stability enables use in 48 V telecom and industrial bus protection. |
| Power Dissipation | 5.0 W at TL = 25 °C (3/8″ lead length) - requires minimum heatsinking for continuous operation above ~1.47 W on standard FR4 PCB. |
| Dynamic Impedance (ZZ) | 42 Ω @ IZT = 20 mA - low AC impedance ensures minimal voltage shift during ripple or transient current changes. |
| Max Surge Current (IZSM) | 400 A (8.3 ms half-sine) - withstands high-energy transients common in motor drives and relay switching circuits. |
| Reverse Leakage (IR) | 0.5 μA @ VR = 47.1 V - ultra-low leakage preserves regulation accuracy and minimizes standby power loss. |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable thermal design when mounted with 10 mm lead length from body. |
| Operating Temp Range | –65 °C to +150 °C - supports deployment in automotive engine compartments and industrial outdoor enclosures. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by colored band. Leads are annealed matte-tin plated (RoHS-compliant, solderable per MIL-STD-750 Method 2026).
| 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 between cathode and anode to activate regulation. |
| Cathode | Zener regulation terminal / input for reverse-bias voltage | Banded end; connected to unregulated input rail; maintains stable 62 V drop relative to anode under operating current range. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized electrical behavior, mechanical dimensions, and test methodology across global supply chain. |
| ±5% voltage tolerance (B suffix) | Provides tighter regulation than ±10% (A) or ±20% (no suffix), reducing need for post-regulation trimming in mid-precision systems. |
| RoHS-compliant e3 suffix | Meets EU RoHS Directive 2011/65/EU with matte-tin plating - no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE. |
| Level 1 moisture sensitivity | Eliminates bake-out or dry-pack requirements before SMT reflow - simplifies handling and reduces manufacturing cost. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model ESD events without parameter shift - improves reliability in manual assembly and field service. |
Applications
| Industrial Power Supply Reference | Telecom 48 V Bus Overvoltage Clamp |
|---|---|
Use Scenario: Provides stable 62 V reference for feedback loop in isolated DC-DC converters delivering 48 V output. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing error amplifier setpoint. Use Value: Maintains ±0.31 V regulation (ΔVZ = 2.1 V over 40–200 mA) ensuring <±1% output voltage drift across line/load variations. |
Use Scenario: Clamps transient surges on -48 V telecom distribution bus caused by lightning-induced coupling or hot-swap events. IC Role / Device Role / Timing Role: Standby shunt protector activated only during overvoltage excursions exceeding 62 V. Use Value: Absorbs 400 A peak surge (8.3 ms) without failure, protecting downstream DC-DC modules and line cards. |
| Motor Drive DC Link Snubber | Test Equipment High-Voltage Calibration |
Use Scenario: Suppresses voltage spikes across IGBT collector-emitter during turn-off in 600 V industrial inverters. IC Role / Device Role / Timing Role: Passive snubbing element clamping DC link to safe margin below IGBT breakdown rating. Use Value: Limits dv/dt-induced overshoot to ≤62 V + 2.1 V, preventing false triggering of desaturation protection. |
Use Scenario: Serves as traceable 62 V calibration standard in benchtop multimeters and programmable power supplies. IC Role / Device Role / Timing Role: Precision voltage reference source with verified ±5% tolerance and low ΔVZ drift. Use Value: Enables NIST-traceable verification of 60–65 V measurement ranges with <0.5 μA leakage minimizing loading error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5372BRLG | Same 62 V ±5%, 5 W rating, but in bulk packaging (no TR12 tape/reel); identical electrical specs and T-18 package. | No reel logistics - suitable for hand-soldered prototypes or low-volume repair, not automated SMT lines. | Select 1N5372BRLG for lab validation or field replacement where reel feeding is unnecessary. |
| MMBZ5255B-TP | Surface-mount SOT-23 package, 62 V ±5%, but rated only 225 mW - 22× lower power than 1N5372BE3/TR12. | Cannot replace in high-power clamping roles; limited to low-current biasing or signal-level reference. | Choose MMBZ5255B-TP only for space-constrained PCBs where dissipation stays below 225 mW. |
Compared with 1N5372BE3/TR12, 1N5372BRLG offers identical performance in bulk form, while MMBZ5255B-TP trades power capability for miniaturization - neither is pin-compatible due to axial vs. SMT packaging, and both require layout revision if substituted.
Availability
1N5372BE3/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, telecom bus protection, motor drive snubbers, and test equipment calibration requiring stable component supply with full RoHS compliance and JEDEC-standardized performance.
Supply support for 1N5372BE3/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 1N53xxB series was designed for robust, high-power voltage regulation in harsh environments - emphasizing thermal resilience, surge immunity, and long-term parametric stability over decades of operation.
FAQ
What is the Zener voltage tolerance of the 1N5372BE3/TR12?
The 1N5372BE3/TR12 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its measured VZ at 20 mA test current falls within 58.9 V to 65.1 V at TL = 25 °C. The e3 suffix confirms RoHS compliance, and TR12 denotes tape-and-reel packaging - all consistent with Microsemi's 1N5333B–1N5388B family specifications.
Can the 1N5372BE3/TR12 be used without a heatsink?
The 1N5372BE3/TR12 can operate without an external heatsink only at reduced power: its steady-state rating drops to 1.47 W when mounted on FR4 with 4 mm² copper pads. At full 5 W, it requires 3/8″ (10 mm) lead length from body and adequate ambient airflow or chassis conduction to maintain junction temperature within –65 °C to +150 °C limits. Derating curves in the official datasheet must be followed for reliable operation.
What does the "TR12" suffix mean in 1N5372BE3/TR12?
The "TR12" suffix in 1N5372BE3/TR12 indicates tape-and-reel packaging per EIA-296 standard, with 12 mm tape width and component spacing optimized for automated pick-and-place assembly. This format supports high-volume production and is distinct from bulk (RLG) or ammo-pack (AP) variants - all sharing identical electrical and thermal characteristics as the base 1N5372B device.
How does the 1N5372BE3/TR12 handle surge conditions?
The 1N5372BE3/TR12 is rated for 400 A peak non-recurrent surge current (IZSM) in an 8.3 ms half-sine waveform, per JEDEC standards. This capability allows it to absorb energy from inductive kickback or lightning-induced transients without degradation. Its 25 °C/W thermal resistance and robust epoxy encapsulation ensure survivability when properly mounted with sufficient copper area for heat spreading during surge events.
Is the 1N5372BE3/TR12 suitable for automotive under-hood applications?
Yes - the 1N5372BE3/TR12 operates across –65 °C to +150 °C and is qualified to MIL-PRF-19500 screening levels (with MQ/MX/MV prefixes). Its moisture sensitivity Level 1, ESD hardness per MIL-STD-750 Method 1020, and UL94V-0 epoxy make it suitable for engine control units and battery management systems where thermal cycling and vibration resistance are critical. Full AEC-Q101 qualification requires prefix-based screening.
1N5372BE3/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:
- ±5%
- 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
1N5372BE3/TR12 FAQ
1.How can I place an order for 1N5372BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5372BE3/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 1N5372BE3/TR12 reliable?
The price and inventory of 1N5372BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5372BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5372BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5372BE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5372BE3/TR12?
1N5372BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5372BE3/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 1N5372BE3/TR12?
For technical support, including 1N5372BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5372BE3/TR12 requirements.
6.How does Aetrix verify that 1N5372BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5372BE3/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 1N5372BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5372BE3/TR12?
All 1N5372BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5372BE3/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 1N5372BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5372BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5372BE3/TR12 Tags
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