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Microchip Technology 1N5357AE3/TR13
- Part No.:
- 1N5357AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5357AE3/TR13.pdf
- Description:
- DIODE ZENER 20V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,198
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Product details
Overview
1N5357AE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 20 V, ±10% tolerance (A suffix), 3.0 Ω maximum dynamic impedance at 65 mA test current, and 75 mA maximum Zener current when adequately heat-sunk. 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 1N5357AE3/TR13 datasheet, 1N5357AE3/TR13 pinout, 1N5357AE3/TR13 application, or 1N5357AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (75 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, where cathode-band polarity must be observed. Its low dynamic impedance (3.0 Ω) and tight voltage regulation (ΔVZ = 0.40 V) ensure stable reference performance across 10–50% of IZM. The T-18 package supports axial mounting with 0.7 g mass and UL94V-0 epoxy body.
Thermal design relies on junction-to-lead resistance (25 °C/W at 3/8″ lead length) rather than ambient-rated dissipation-steady-state power drops to 1.47 W on FR4 with defined copper pads. Forward voltage is ≤1.2 V at 1.0 A, and it withstands 260 °C soldering for 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±10% - defines regulation setpoint under 65 mA test current; high-end tolerance (22 V) sets IZM calculation basis. |
| Power Dissipation | 5.0 W at TL = 25°C - requires mechanical heat sinking via leads; derates linearly above 25°C. |
| Dynamic Impedance (ZZ) | 3.0 Ω max @ 65 mA - ensures minimal output voltage shift under load transients in feedback circuits. |
| Max Reverse Current (IR) | 0.5 μA @ 15.2 V - guarantees low leakage in high-impedance bias networks. |
| Surge Current (IZSM) | 75 A peak (8.3 ms half-sine) - provides transient overvoltage clamping capability without failure. |
| Voltage Regulation (ΔVZ) | 0.40 V - measured between 10% and 50% of IZM; quantifies line regulation fidelity in stable references. |
| Thermal Resistance | 25 °C/W junction-to-lead - enables thermal modeling using lead temperature, not ambient, for reliability prediction. |
Pinout & Package
Package: T-18 axial-leaded plastic 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 | Reference ground node in shunt regulator configuration | Connected to system ground or lower-potential rail; carries full Zener current during regulation. |
| Cathode | Regulated output node | Banded end; connected to feedback point or protected circuit node; maintains 20 V relative to anode under reverse bias. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized electrical behavior and interchangeability across qualified suppliers and legacy designs. |
| Moisture sensitivity Level 1 | No dry-pack required before PCB assembly-reduces handling cost and avoids bake-out delays. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during manual assembly or rework in industrial environments. |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating-no lead or hazardous substance exemptions needed. |
| Tape-and-reel packaging (TR13 suffix) | Enables automated pick-and-place placement; TR13 denotes EIA-296 standard 13-inch reel format. |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Provides stable 20 V reference for optocoupler-based feedback in isolated DC-DC converters. IC Role / Device Role / Timing Role: Shunt voltage reference regulating error amplifier input voltage. Use Value: Low ΔVZ (0.40 V) and 3.0 Ω ZZ minimize output voltage drift across line/load variations. | Use Scenario: Supplies excitation voltage to bridge-based pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Precision analog reference source for ratiometric signal conditioning. Use Value: ±10% VZ tolerance and <0.5 μA leakage at 15.2 V ensure stable bias under wide temperature range (–65°C to +150°C). |
| Overvoltage Clamp Protection | Programmable Threshold Detector |
Use Scenario: Clamps transient surges on 24 V DC control bus in railway signaling equipment. IC Role / Device Role / Timing Role: Passive crowbar element absorbing energy during lightning-induced spikes. Use Value: 75 A non-recurrent surge rating (8.3 ms) and robust epoxy encapsulation sustain repeated stress events. | Use Scenario: Sets trip point for comparator-based battery undervoltage lockout in backup power modules. IC Role / Device Role / Timing Role: Fixed threshold voltage source enabling hysteresis-free detection at ~20 V. Use Value: Tight ΔVZ and low knee impedance allow accurate, repeatable switching without external trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | ±5% VZ tolerance (vs. ±10% for 1N5357AE3/TR13); otherwise identical electrical specs and package. | Suitable where tighter regulation stability is required without changing layout or thermal design. | Select 1N5357B when reference accuracy dominates over cost; same footprint and mounting. |
| MMBZ5242B (SOT-23) | Surface-mount, 500 mW rating, 12 V nominal VZ, ±5%; not pin-compatible or power-equivalent. | Used only in space-constrained, low-power portable electronics-not a drop-in replacement. | Choose MMBZ5242B only for new SMT designs with <0.5 W dissipation needs; not suitable for 5 W thermal loads. |
Compared with 1N5357B, the 1N5357AE3/TR13 trades voltage accuracy for cost and availability in tape-and-reel; compared with MMBZ5242B, it delivers 10× higher power handling and axial-lead serviceability but requires through-hole assembly and board area.
Availability
1N5357AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, railway control systems, and sensor interface modules requiring stable component supply, long-lifecycle support, and RoHS-compliant procurement.
Supply support for 1N5357AE3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xx series was designed for ruggedized voltage regulation in harsh-environment power systems-emphasizing thermal robustness, surge resilience, and JEDEC-standard interoperability.
FAQ
What is the Zener voltage tolerance of the 1N5357AE3/TR13?
The 1N5357AE3/TR13 has a nominal Zener voltage of 20 V with ±10% tolerance, as indicated by the "A" suffix per Microsemi's documentation. This means the actual VZ falls between 18.0 V and 22.0 V at 65 mA test current and 25°C lead temperature. The tolerance directly affects IZM calculation-using VZM = 22.0 V yields the rated 75 mA maximum current.
Can the 1N5357AE3/TR13 be used without a heatsink?
The 1N5357AE3/TR13 can operate at full 5.0 W only when lead temperature (TL) is maintained at ≤25°C-typically requiring mechanical heat sinking via 3/8″ leads. On a standard FR4 PCB with specified copper, its steady-state power drops to 1.47 W. For continuous 5 W operation, external heatsinking or forced-air cooling is mandatory; derating curves in Figure 1 define safe limits.
What does the "TR13" suffix mean in 1N5357AE3/TR13?
The "TR13" suffix indicates tape-and-reel packaging per EIA-296 standard on a 13-inch reel-optimized for automated SMT placement equipment. It confirms the device is supplied in RoHS-compliant (e3) form, with matte-tin plating and moisture-sensitive Level 1 handling. The base part remains electrically and mechanically identical to bulk or ammo-pack versions of 1N5357AE3.
How does the 1N5357AE3/TR13 perform under surge conditions?
The 1N5357AE3/TR13 is rated for 75 A peak non-recurrent surge current (IZSM) in an 8.3 ms half-sine waveform, per Microsemi's datasheet. This capability enables reliable transient voltage suppression in industrial 24 V systems. Its void-free UL94V-0 epoxy body and low thermal resistance (25 °C/W) prevent thermal runaway during such events when leads are properly terminated.
Is the 1N5357AE3/TR13 suitable for automotive applications?
The 1N5357AE3/TR13 operates across –65°C to +150°C and meets MIL-STD-750 ESD testing, but it is not AEC-Q200 qualified. While used in some automotive-adjacent industrial systems (e.g., railway controls), Microsemi does not specify automotive-grade screening (e.g., JANTXV) for this variant. For production automotive ECUs, AEC-Q200-certified alternatives should be verified separately.
1N5357AE3/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:
- ±10%
- 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
1N5357AE3/TR13 FAQ
1.How can I place an order for 1N5357AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5357AE3/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 1N5357AE3/TR13 reliable?
The price and inventory of 1N5357AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5357AE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5357AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5357AE3/TR13 transactions.
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4.How is shipping managed for 1N5357AE3/TR13?
1N5357AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5357AE3/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 1N5357AE3/TR13?
For technical support, including 1N5357AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5357AE3/TR13 requirements.
6.How does Aetrix verify that 1N5357AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5357AE3/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 1N5357AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5357AE3/TR13?
All 1N5357AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5357AE3/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 1N5357AE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5357AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5357AE3/TR13 Tags
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