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Microchip Technology 1N5373CE3/TR13
- Part No.:
- 1N5373CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5373CE3/TR13.pdf
- Description:
- DIODE ZENER 68V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,614
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Product details
Overview
1N5373CE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 68 V, ±2% tolerance (C suffix), 20 mA test current, 44 Ω dynamic impedance at IZT, and maximum reverse leakage of 0.5 μA at 51.7 V. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N5373CE3/TR13 datasheet, 1N5373CE3/TR13 pinout, 1N5373CE3/TR13 application, or 1N5373CE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (500 A), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates as a two-terminal voltage reference, conducting in reverse breakdown to maintain stable output voltage under varying load and line conditions. Its 68 V nominal Zener voltage is specified at 20 mA test current with ±2% tolerance, and it exhibits low dynamic impedance (44 Ω) for tight regulation across its operating current range.
The diode features a T-18 axial package with void-free thermosetting epoxy body (UL94V-0), cathode band polarity marking, and 0.7 g mass. Thermal resistance is 25 °C/W junction-to-lead at 10 mm lead length, enabling 5 W dissipation at TL ≤ 25 °C with adequate heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 68 V ±2% at 20 mA - ensures precise voltage reference stability in feedback loops |
| Power Dissipation | 5.0 W at 25 °C lead temperature - supports high-current regulation when mounted with 10 mm lead length |
| Dynamic Impedance (ZZ) | 44 Ω at 20 mA - minimizes output voltage variation under load transients |
| Reverse Leakage Current | 0.5 μA max at 51.7 V - guarantees low standby power loss in sensing and biasing applications |
| Surge Current (IZSM) | 500 A peak (8.3 ms half-sine) - withstands transient overvoltage events without degradation |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable thermal design with standard axial mounting |
| Operating Temperature | –65 °C to +150 °C - suitable for harsh-environment industrial and aerospace power systems |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case (UL94V-0 epoxy), cathode indicated by band, RoHS-compliant matte-tin plated leads per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / Regulated output node | Banded end; must be held positive relative to anode to enter regulation mode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables high-accuracy voltage references without external trimming in precision power supplies |
| Moisture sensitivity Level 1 (IPC/JEDEC J-STD-020B) | Eliminates dry-pack requirement and bake-out prior to assembly, reducing manufacturing cost |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Supports handling and assembly in standard environments without special ESD controls |
| 5.0 W steady-state power at TL < 25 °C | Provides robust overvoltage clamping capability in DC-DC converter protection circuits |
| RoHS-compliant e3 suffix | Meets global environmental compliance requirements for industrial and telecom equipment |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener diode provides precise 68 V reference for optocoupler-based error amplifier input. Use Value: ±2% tolerance ensures consistent output voltage regulation across production batches and temperature extremes. | Use Scenario: Clamping transient surges on 48 V DC bus in motor drive control modules. IC Role / Device Role / Timing Role: Acts as shunt protector, diverting excess energy during load dump or inductive kick events. Use Value: 500 A surge rating and 5 W power handling enable reliable protection without sacrificial fuse dependency. |
| Programmable Voltage Monitor | High-Voltage Bias Generator |
Use Scenario: Setting threshold for undervoltage/overvoltage detection in battery management systems. IC Role / Device Role / Timing Role: Forms reference leg in comparator input network for 68 V trip point. Use Value: Low 0.5 μA leakage at 51.7 V ensures minimal current draw in always-on monitoring circuits. | Use Scenario: Generating stable bias voltage for gate drivers in high-side IGBT modules. IC Role / Device Role / Timing Role: Supplies regulated 68 V gate bias to isolated driver ICs requiring precise startup voltage. Use Value: 44 Ω dynamic impedance maintains voltage stability despite driver switching current transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5373B | Same 68 V nominal voltage but ±5% tolerance (B suffix); identical package and thermal specs | Acceptable where tighter voltage accuracy is not required, e.g., non-critical clamp functions | Select 1N5373B only if ±5% regulation tolerance meets system margin requirements |
| MMBZ5268B | Surface-mount SOD-123 package; 68 V ±5%, 0.5 W power rating; 100 Ω ZZ at 10 mA | Limited to low-power signal-level referencing; unsuitable for 5 W clamping or high-surge scenarios | Choose MMBZ5268B only for space-constrained PCBs where power and surge demands are below 0.5 W |
Compared with 1N5373B and MMBZ5268B, the 1N5373CE3/TR13 delivers superior voltage accuracy (±2% vs ±5%), higher power handling (5 W vs 0.5 W), and robust surge immunity (500 A vs no rated surge), making it optimal for industrial-grade regulation and protection where precision and ruggedness are critical.
Availability
1N5373CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply reference, overvoltage protection circuit, and programmable voltage monitor applications requiring stable component supply and long-term lifecycle support.
Supply support for 1N5373CE3/TR13 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N53xx series was developed specifically for high-power, high-stability voltage regulation in demanding power conversion and protection systems where axial-leaded robustness and wide temperature operation are essential.
FAQ
What is the Zener voltage tolerance of the 1N5373CE3/TR13?
The 1N5373CE3/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in the part number. This means its nominal 68 V regulation voltage falls within 66.64 V to 69.36 V at 20 mA test current and 25 °C lead temperature. The tighter tolerance supports precision reference applications where standard ±5% devices would introduce unacceptable error margins.
Does the 1N5373CE3/TR13 require dry packing before reflow soldering?
No, the 1N5373CE3/TR13 does not require dry packing before reflow soldering. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, meaning it can be stored and processed in ambient conditions without baking. This eliminates pre-reflow moisture removal steps and reduces manufacturing overhead for high-volume production of the 1N5373CE3/TR13.
What is the maximum surge current rating for the 1N5373CE3/TR13?
The 1N5373CE3/TR13 has a maximum non-recurrent surge current (IZSM) rating of 500 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy without failure, making the 1N5373CE3/TR13 suitable for protecting sensitive downstream circuitry against load dump or inductive switching events in industrial power systems.
How is polarity marked on the 1N5373CE3/TR13?
The 1N5373CE3/TR13 uses a cathode band marking on the body to indicate polarity. The banded end is the cathode and must be held at a higher potential than the anode to operate in Zener breakdown mode. This marking is visible on the void-free thermosetting epoxy case and aligns with JEDEC-standard axial diode orientation conventions used throughout the 1N53xx series.
Is the 1N5373CE3/TR13 RoHS compliant?
Yes, the 1N5373CE3/TR13 is RoHS compliant, as confirmed by the "e3" suffix in its part number. This indicates annealed matte-tin plating on leads that meets EU Directive 2011/65/EU requirements. The 1N5373CE3/TR13 contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and is suitable for environmentally regulated industrial and telecom equipment.
1N5373CE3/TR13 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):
- 68 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 44 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 49 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
1N5373CE3/TR13 FAQ
1.How can I place an order for 1N5373CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5373CE3/TR13 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 1N5373CE3/TR13 reliable?
The price and inventory of 1N5373CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5373CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5373CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5373CE3/TR13 transactions.
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4.How is shipping managed for 1N5373CE3/TR13?
1N5373CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5373CE3/TR13 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 1N5373CE3/TR13?
For technical support, including 1N5373CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5373CE3/TR13 requirements.
6.How does Aetrix verify that 1N5373CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5373CE3/TR13 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 1N5373CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5373CE3/TR13?
All 1N5373CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5373CE3/TR13, 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 1N5373CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5373CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5373CE3/TR13 Tags
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