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Microchip Technology 1N5357BE3/TR13
- Part No.:
- 1N5357BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5357BE3/TR13.pdf
- Description:
- DIODE ZENER 20V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,313
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Product details
Overview
1N5357BE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with a nominal regulation voltage of 20 V ±5%, maximum dynamic impedance of 237 Ω at 65 mA test current, and maximum reverse leakage current of 0.5 μA at 15.2 V. It operates across –65 °C to +150 °C and is RoHS-compliant (e3 suffix), designed for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5357BE3/TR13 datasheet, 1N5357BE3/TR13 pinout, 1N5357BE3/TR13 application, or 1N5357BE3/TR13 equivalent, key selection criteria include its 20 V Zener voltage tolerance, 5 W steady-state power rating at lead temperature <25 °C, low ΔVZ of 0.40 V (10–50% IZM), and T-18 axial package compatibility with through-hole PCB mounting.
Technical Context
This device functions as a two-terminal voltage regulator, conducting in reverse breakdown when cathode voltage exceeds anode by ≥20 V. Its Zener voltage is specified at 65 mA (IZT), with dynamic impedance measured at 1 kHz AC superimposed on DC bias - not derived from forward conduction or avalanche onset.
Thermal performance is defined relative to lead temperature (TL): 25 °C/W junction-to-lead at 10 mm lead length, enabling 5 W dissipation only with adequate heatsinking; mounted on FR4 with 4 mm² copper pads, derated to 1.47 W at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±5% at 65 mA - defines stable regulation point for feedback networks requiring tight voltage reference stability. |
| Power Dissipation (PD) | 5.0 W at TL < 25 °C - requires mechanical heat sinking via leads; derates linearly above 25 °C per Figure 1. |
| Dynamic Impedance (ZZ) | 237 Ω max at 65 mA - determines output voltage variation under load current changes in regulation circuits. |
| Reverse Leakage (IR) | 0.5 μA max at 15.2 V - ensures minimal quiescent current draw in high-impedance bias/reference paths. |
| Voltage Regulation (ΔVZ) | 0.40 V max - difference between VZ measured at 10% and 50% of IZM, indicating line regulation fidelity. |
| Max Surge Current (IZSM) | 75 A peak (8.3 ms half-sine) - supports transient overvoltage clamping without failure in surge-prone inputs. |
| Operating Temp Range | –65 °C to +150 °C - validated for industrial and automotive under-hood environments without derating. |
Pinout & Package
Package: T-18 axial-leaded plastic case (void-free UL94V-0 epoxy), cathode indicated by color band; leads are annealed matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode. |
| Cathode (banded end) | Zener regulation node | Connected to regulated rail or feedback point; maintains ~20 V above anode when reverse current ≥65 mA. |
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 SMT reflow prep and eliminates baking steps before assembly. |
| RoHS-compliant (e3) | Lead-free matte-tin plating meets EU Directive 2011/65/EU and China RoHS II requirements. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - withstands human-body-model discharges without parameter shift. |
| Tight voltage tolerance | ±5% (B suffix) enables use in applications where 1% or 2% references are unnecessary but 10% is insufficient. |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision voltage reference providing stable 20 V threshold to error amplifier input. Use Value: Enables ±1% output regulation accuracy with minimal external components and no trimming required. |
Use Scenario: Protecting microcontroller I/O pins from transient surges on industrial sensor lines. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage to 20.4 V (VZ + ΔVZ) during ESD or inductive kick events. Use Value: Absorbs up to 75 A surge (8.3 ms) without degradation, preserving downstream logic integrity. |
| Reference Voltage Source | Current Source Bias |
Use Scenario: Generating stable bias for op-amp comparators in battery-monitoring circuits. IC Role / Device Role / Timing Role: Two-terminal reference establishing fixed 20 V node for resistor-divider scaling. Use Value: Delivers <0.5 μA leakage at 15.2 V, minimizing error in high-impedance divider networks. |
Use Scenario: Setting constant current for LED driver or laser diode bias circuits. IC Role / Device Role / Timing Role: Series-pass element defining current via VZ/R relationship in simple constant-current topology. Use Value: Maintains <0.40 V regulation delta across 10–50% IZM, ensuring <2% current variation over load range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5357B | No e3 RoHS suffix; tin-lead plating instead of matte-tin; otherwise identical electrical specs and T-18 package. | Not suitable for lead-free assembly processes; requires Pb-based solder profile and violates RoHS compliance mandates. | Select 1N5357B only for legacy repair or non-RoHS-restricted military/aerospace programs with JAN/JANTX screening. |
| MMSZ5249B-TP | Surface-mount SOD-123 package (2.5 W rating); 20 V ±5%; higher ZZ (500 Ω typ); lower IZM (220 mA). | Cannot replace 1N5357BE3/TR13 in through-hole designs without board redesign; limited surge capability (12 A). | Choose MMSZ5249B-TP only for space-constrained PCBs where 5 W dissipation is not required and thermal management favors SMT layout. |
Compared with 1N5357B and MMSZ5249B-TP, the 1N5357BE3/TR13 uniquely combines RoHS compliance, 5 W axial-power handling, and JEDEC-standardized T-18 footprint - making it the only option for new industrial power supply designs requiring lead-free through-hole Zener regulation at 20 V.
Availability
1N5357BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and telecom infrastructure equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5357BE3/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 1N53xxB series was engineered for ruggedized voltage regulation in harsh-environment power systems - emphasizing thermal robustness, ESD immunity, and JEDEC-standardized interchangeability across military and commercial grades.
FAQ
What is the Zener voltage tolerance of the 1N5357BE3/TR13?
The 1N5357BE3/TR13 has a Zener voltage tolerance of ±5%, as indicated by the "B" suffix in its part number. This means its measured VZ falls within 19.0 V to 21.0 V at 65 mA test current and 25 °C lead temperature - verified per JEDEC registration and Microsemi's REV D datasheet.
Can the 1N5357BE3/TR13 be used in surface-mount designs?
No - the 1N5357BE3/TR13 uses a T-18 axial-leaded package intended for through-hole mounting. It lacks SMT-compatible terminations or footprint. For surface-mount equivalents, Microsemi offers the SMBJ5357B or SMBG5357B, which share the same 20 V ±5% regulation but in DO-214AA/DO-214AB packages.
What is the maximum continuous power dissipation for the 1N5357BE3/TR13?
The 1N5357BE3/TR13 is rated for 5.0 W steady-state power dissipation only when lead temperature (TL) is maintained below 25 °C, typically achieved via mechanical heatsinking of the leads. On standard FR4 PCB with 4 mm² copper pads, its derated power drops to 1.47 W at 25 °C ambient - per Figure 1 in the official datasheet.
Does the 1N5357BE3/TR13 meet RoHS requirements?
Yes - the "e3" suffix explicitly denotes RoHS compliance: lead-free matte-tin plating on leads and UL94V-0 void-free epoxy encapsulation. It satisfies EU Directive 2011/65/EU and China RoHS II Annex III substance restrictions, with full material declarations available from Microchip Technology.
What is the reverse leakage current specification for the 1N5357BE3/TR13?
The 1N5357BE3/TR13 specifies a maximum reverse leakage current (IR) of 0.5 μA at a reverse test voltage (VR) of 15.2 V - corresponding to 76% of its nominal 20 V Zener voltage. This low leakage ensures minimal loading in high-impedance reference or bias networks.
1N5357BE3/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:
- ±5%
- 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
1N5357BE3/TR13 FAQ
1.How can I place an order for 1N5357BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5357BE3/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 1N5357BE3/TR13 reliable?
The price and inventory of 1N5357BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5357BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5357BE3/TR13?
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1N5357BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5357BE3/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 1N5357BE3/TR13?
For technical support, including 1N5357BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5357BE3/TR13 requirements.
6.How does Aetrix verify that 1N5357BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5357BE3/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 1N5357BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5357BE3/TR13?
All 1N5357BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5357BE3/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 1N5357BE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5357BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5357BE3/TR13 Tags
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