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Microchip Technology 1N5357CE3/TR13
- Part No.:
- 1N5357CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5357CE3/TR13.pdf
- Description:
- DIODE ZENER 20V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,444
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Product details
Overview
1N5357CE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 20 V, ±2% tolerance (C suffix), 65 mA test current (IZT), 3.0 Ω dynamic impedance (ZZ), and 75 mA maximum Zener current (IZM) at 25°C lead temperature. 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 1N5357CE3/TR13 datasheet, 1N5357CE3/TR13 pinout, 1N5357CE3/TR13 application, or 1N5357CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (5.1 A), voltage regulation (ΔVZ = 0.40 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 voltage across wide operating current (10–75 mA) and temperature (–65°C to +150°C) ranges. Its low dynamic impedance (3.0 Ω) and tight ±2% voltage tolerance ensure minimal deviation under load variation.
The 1N5357CE3/TR13 uses a void-free thermosetting epoxy T-18 package with cathode band marking and is rated for 5.0 W steady-state dissipation at TL < 25°C (3/8″ lead length). Thermal resistance is specified as 25 °C/W junction-to-lead and 85 °C/W junction-to-ambient on FR4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±2% - precise regulation point for feedback networks requiring stable reference under varying load |
| Test Current (IZT) | 65 mA - standardized bias point for measuring VZ and ZZ; defines optimal operating zone for accuracy |
| Dynamic Impedance (ZZ) | 3.0 Ω - low AC resistance ensures minimal voltage shift with current transients in regulation circuits |
| Max Zener Current (IZM) | 75 mA - maximum continuous DC current at TL = 25°C; determines safe power handling with heat sinking |
| Voltage Regulation (ΔVZ) | 0.40 V - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity |
| Surge Current (IZSM) | 5.1 A - peak non-repetitive half-sine (8.3 ms) rating for transient overvoltage clamping |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal design with discrete lead-mounting; requires ≥10 mm lead length for full 5 W rating |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case (void-free UL94V-0 epoxy), cathode indicated by colored band. Leads are annealed matte-tin plated (RoHS compliant, e3 suffix), 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 across anode–cathode for regulation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated rail; supplies stable 20 V when reverse biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables high-accuracy feedback in switching power supplies without external trimming |
| 5.0 W power rating with 25 °C/W thermal resistance | Supports robust operation at full power with simple lead-length heat sinking (3/8″ from body) |
| Moisture sensitivity Level 1 (IPC/JEDEC J-STD-020B) | Eliminates dry-pack requirement and bake-out prior to assembly; reduces manufacturing overhead |
| RoHS-compliant matte-tin plating (e3 suffix) | Ensures compatibility with lead-free reflow profiles (260°C/10 s) and long-term solderability |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for ESD-protected workstations during assembly |
Applications
| Switching Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision 20 V reference source for TL431-type shunt regulators or direct feedback to PWM controller error amplifier. Use Value: ±2% tolerance and 3.0 Ω dynamic impedance minimize output voltage drift across line/load/temperature, improving overall PSU accuracy to ±1.5%. |
Use Scenario: Protecting downstream ICs from transient overvoltage events on 24 V industrial bus lines. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated when bus voltage exceeds 20 V threshold. Use Value: 5.1 A surge rating (8.3 ms half-sine) absorbs 100–200 J transients without failure, extending system reliability in harsh environments. |
| Programmable Voltage Reference | DC-DC Converter Trim Network |
|
Use Scenario: Generating stable 20 V reference for ADC front-end biasing or sensor excitation in data acquisition modules. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source replacing higher-cost bandgap references where 20 V output is required. Use Value: 0.40 V voltage regulation (ΔVZ) ensures ≤2% output variation from 6.5 mA to 37.5 mA, supporting consistent analog signal conditioning. |
Use Scenario: Fine-tuning output voltage of adjustable DC-DC modules (e.g., LM2596-based) via resistor divider offset. IC Role / Device Role / Timing Role: Fixed 20 V node injected into feedback divider to shift nominal output upward by defined margin. Use Value: Tight ±2% tolerance guarantees predictable trim accuracy; 75 mA IZM supports stable operation even with 10 kΩ divider loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | Same 20 V nominal VZ, but ±5% tolerance (B suffix) and higher ZZ (3.0 Ω vs. 3.0 Ω - identical per table); same IZM (75 mA) | Acceptable where tighter tolerance not required; lower cost due to relaxed spec | Select 1N5357B if system-level calibration compensates for voltage variance; use 1N5357CE3/TR13 only when ±2% initial accuracy is mandatory |
| MMSZ5249ET1G | Surface-mount SOD-123 package; 20 V ±5%, 20 mA IZT, 22 Ω ZZ, 1.0 W rating - significantly lower power and impedance performance | Limited to low-power logic-level clamping or biasing; unsuitable for 5 W regulation loads | Choose MMSZ5249ET1G only for space-constrained PCBs where power dissipation ≤1 W; retain 1N5357CE3/TR13 for >2 W continuous Zener loads |
Compared with 1N5357B and MMSZ5249ET1G, the 1N5357CE3/TR13 uniquely delivers ±2% tolerance, 5 W power capability, and 25 °C/W thermal resistance in an axial-leaded T-18 package-making it the only option for high-accuracy, high-power, through-hole Zener regulation without derating or heatsinking.
Availability
1N5357CE3/TR13 is available at Aetrix Electronics and suitable for switching power supply feedback, overvoltage clamp circuits, and programmable voltage reference designs requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5357CE3/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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial applications.
The 1N53xxB series was designed for rugged, high-stability voltage regulation in mission-critical power systems-emphasizing wide temperature range (–65°C to +150°C), low moisture sensitivity, and MIL-qualified screening options.
FAQ
What is the Zener voltage tolerance of the 1N5357CE3/TR13?
The 1N5357CE3/TR13 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in its part number. This means its actual breakdown voltage falls within 19.6 V to 20.4 V at 65 mA test current and 25°C lead temperature. The tolerance is guaranteed per JEDEC specification and verified during 100% testing. This level of precision makes the 1N5357CE3/TR13 suitable for applications demanding tight voltage reference stability without post-assembly calibration.
Can the 1N5357CE3/TR13 be used in surface-mount designs?
No, the 1N5357CE3/TR13 is an axial-leaded T-18 package device and is not compatible with surface-mount assembly processes. It requires through-hole mounting with ≥10 mm lead length from the body for full 5 W power dissipation. For surface-mount equivalents, Microsemi offers the SMBJ5357B (SMB package) and SMBG5357B (SMBG package), both rated for 5 W but with different thermal characteristics and footprint requirements than the 1N5357CE3/TR13.
What is the maximum surge current rating for the 1N5357CE3/TR13?
The 1N5357CE3/TR13 has a maximum non-repetitive surge current (IZSM) rating of 5.1 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating applies under specified test conditions and reflects the device's ability to absorb transient energy without failure. Engineers must ensure that surge duration and repetition rate remain within datasheet limits to avoid cumulative thermal stress on the 1N5357CE3/TR13 junction.
Does the 1N5357CE3/TR13 require dry packing before PCB assembly?
No, the 1N5357CE3/TR13 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it is not moisture-sensitive and does not require dry packing, baking, or special handling prior to reflow soldering. Its void-free epoxy encapsulation and robust construction allow standard storage and assembly practices-reducing process complexity and cost in high-volume manufacturing of products using the 1N5357CE3/TR13.
How does the thermal resistance of the 1N5357CE3/TR13 affect PCB layout?
The 1N5357CE3/TR13 has a junction-to-lead thermal resistance of 25 °C/W when mounted with 3/8″ (10 mm) lead length from the body. To achieve full 5 W power dissipation, PCB layout must maintain this minimum lead length and avoid excessive copper pour near the leads that could impede heat conduction away from the junction. Mounting on FR4 with standard pads yields 85 °C/W junction-to-ambient, limiting usable power to ~1.47 W unless additional heatsinking is implemented-so layout directly governs the 1N5357CE3/TR13's real-world power capability.
1N5357CE3/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):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 14.4 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
1N5357CE3/TR13 FAQ
1.How can I place an order for 1N5357CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5357CE3/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 1N5357CE3/TR13 reliable?
The price and inventory of 1N5357CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5357CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5357CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5357CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5357CE3/TR13?
1N5357CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5357CE3/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 1N5357CE3/TR13?
For technical support, including 1N5357CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5357CE3/TR13 requirements.
6.How does Aetrix verify that 1N5357CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5357CE3/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 1N5357CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5357CE3/TR13?
All 1N5357CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5357CE3/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 1N5357CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5357CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5357CE3/TR13 Tags
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