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Microchip Technology 1N5358BE3/TR8
- Part No.:
- 1N5358BE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5358BE3/TR8.pdf
- Description:
- DIODE ZENER 22V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,203
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Product details
Overview
1N5358BE3/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 22 V, ±5% tolerance (B suffix), 3.5 Ω dynamic impedance at 50 mA test current, and maximum reverse current of 0.5 μA at 15.8 V. 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 1N5358BE3/TR8 datasheet, 1N5358BE3/TR8 pinout, 1N5358BE3/TR8 application, or 1N5358BE3/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (4.7 A), low voltage regulation drift (±0.45 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal shunt voltage regulator, maintaining stable output voltage across wide operating current (50 mA IZT, up to 75 mA IZM) and temperature ranges. Its low dynamic impedance (3.5 Ω) ensures minimal voltage deviation under load transients, while the 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with minimal heatsinking when leads are trimmed to 10 mm.
The 1N5358BE3/TR8 uses a void-free thermosetting epoxy case (UL94V-0), cathode band polarity marking, and annealed matte-tin plating compatible with standard soldering profiles (260 °C/10 s). It meets MIL-PRF-19500 screening levels when prefixed (e.g., MV1N5358BE3/TR8) and is moisture-sensitive Level 1 per J-STD-020B-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V ±5% - precise regulation point for 24 V rail clamping or reference generation |
| Test Current (IZT) | 50 mA - standardized bias point for measuring VZ and ZZ |
| Dynamic Impedance (ZZ) | 3.5 Ω - low AC resistance ensures tight voltage stability under varying load currents |
| Max Reverse Current (IR) | 0.5 μA @ 15.8 V - negligible leakage below regulation threshold, critical for low-power standby circuits |
| Max Regulator Current (IZM) | 75 mA - maximum continuous DC current before exceeding 5 W power limit at 25 °C lead temperature |
| Voltage Regulation (ΔVZ) | ±0.45 V - difference between VZ measured at 10% and 50% of IZM, quantifying knee sharpness |
| Surge Current (IZSM) | 4.7 A - peak non-repetitive half-sine (8.3 ms) capability for transient suppression |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), 0.7 g weight, cathode indicated by colored band. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink terminal during reverse breakdown | Connected to lower-potential node (e.g., ground or return path); must be at lower voltage than cathode to enable regulation |
| Cathode | Current source terminal during reverse breakdown | Banded end; connected to higher-potential node (e.g., unregulated rail); defines regulated output voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures industry-standard electrical behavior, interchangeability, and test methodology compliance |
| RoHS-compliant e3 suffix | Meets EU RoHS Directive 2011/65/EU with lead-free matte-tin plating and halogen-free epoxy |
| Level 1 moisture sensitivity | No dry pack or baking required prior to assembly-reduces manufacturing overhead and handling risk |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model ESD events without parameter shift-simplifies handling in non-EPA environments |
| High surge current rating | 4.7 A peak (8.3 ms half-sine) enables robust transient voltage suppression without external crowbar circuitry |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing feedback reference in isolated 24 V DC-DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 22 V setpoint to error amplifier input. Use Value: Maintains ±0.45 V regulation across 7.5–37.5 mA load range, enabling <1% output voltage drift over line and load variations. | Use Scenario: Clamping induced surges on 24 V fieldbus lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Passive overvoltage clamp limiting rail excursions to ≤22.5 V during transients. Use Value: Absorbs 4.7 A surge (8.3 ms) without degradation, protecting downstream RS-485 transceivers rated for 30 V absolute max. |
| Programmable Logic Controller Input Conditioning | Test Equipment Reference Source |
Use Scenario: Providing stable bias for optocoupler-based 24 V digital input stage with variable source impedance. IC Role / Device Role / Timing Role: Zener shunt regulating input node to fixed 22 V, ensuring consistent LED forward current across supply tolerances. Use Value: Low 3.5 Ω dynamic impedance minimizes voltage sag under 50 mA step loads, preserving signal integrity during fast edge transitions. | Use Scenario: Serving as primary voltage reference in portable multimeter front-end analog section. IC Role / Device Role / Timing Role: Precision DC reference generating calibration points for ADC offset/gain correction. Use Value: ±5% initial tolerance and <0.45 V regulation spread support 0.1% measurement accuracy after factory trim. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5358B (non-e3, non-TR8) | Same electrical specs but SnPb lead finish and bulk packaging; no RoHS compliance or tape-and-reel convenience | Limited to legacy industrial assemblies where leaded solder and manual placement remain standard | Select only if RoHS exemption applies and reel-fed SMT assembly is not required |
| SMBJ5358B | Surface-mount SMB package (JEDEC DO-214AA); identical 22 V/5 W specs but 85 °C/W junction-to-ambient thermal resistance vs. 25 °C/W for axial leads | Used where board space is constrained and automated pick-and-place is mandatory; requires larger copper area for thermal management | Choose for high-density PCBs; avoid if >1.5 W sustained dissipation is expected without enhanced copper pours |
Compared with 1N5358B and SMBJ5358B, the 1N5358BE3/TR8 uniquely combines RoHS compliance, tape-and-reel delivery for automated insertion, and superior thermal performance (25 °C/W) via axial leads-making it optimal for through-hole industrial power designs requiring long-term reliability and regulatory conformance.
Availability
1N5358BE3/TR8 is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection circuits, and programmable logic controller input conditioning requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 1N5358BE3/TR8 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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized 5 W voltage regulation in harsh-environment power systems-emphasizing thermal robustness, surge resilience, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5358BE3/TR8?
The 1N5358BE3/TR8 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its nominal 22 V regulation point falls within 20.9 V to 23.1 V at 50 mA test current and 25 °C lead temperature. The tolerance remains stable across its –65 °C to +150 °C operating range, supporting designs requiring predictable clamping thresholds without active trimming.
Does the 1N5358BE3/TR8 require dry packing before PCB assembly?
No, the 1N5358BE3/TR8 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it can be stored and assembled indefinitely at ambient conditions without baking. This eliminates moisture-related popcorning risks during reflow or wave soldering and reduces handling complexity in manufacturing environments.
What is the maximum continuous power dissipation for the 1N5358BE3/TR8?
The 1N5358BE3/TR8 is rated for 5.0 W steady-state power dissipation at a lead temperature (TL) of 25 °C with 10 mm lead length from the body. Derating begins above 25 °C at 20 mW/°C (per the 25 °C/W junction-to-lead thermal resistance), reducing usable power to ~1.47 W at 25 °C ambient when mounted on a standard FR4 board with specified copper pads.
Can the 1N5358BE3/TR8 be used as a replacement for the legacy 1N5358B?
Yes, the 1N5358BE3/TR8 is a direct functional and mechanical replacement for the 1N5358B, retaining identical electrical specifications, axial T-18 package, and cathode band marking. The "e3" suffix adds RoHS compliance via matte-tin plating, and "TR8" denotes EIA-296 tape-and-reel packaging-making it suitable for automated through-hole insertion without design or layout changes.
What is the surge current rating of the 1N5358BE3/TR8, and how is it defined?
The 1N5358BE3/TR8 has a maximum non-repetitive surge current (IZSM) of 4.7 A, defined as the peak value of a single 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient energy-such as inductive kickback or lightning-induced spikes-without permanent parameter shift, provided the surge occurs infrequently and average power remains within 5 W limits.
1N5358BE3/TR8 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):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 15.8 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
1N5358BE3/TR8 FAQ
1.How can I place an order for 1N5358BE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5358BE3/TR8 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 1N5358BE3/TR8 reliable?
The price and inventory of 1N5358BE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5358BE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5358BE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5358BE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5358BE3/TR8?
1N5358BE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5358BE3/TR8 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 1N5358BE3/TR8?
For technical support, including 1N5358BE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5358BE3/TR8 requirements.
6.How does Aetrix verify that 1N5358BE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5358BE3/TR8 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 1N5358BE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5358BE3/TR8?
All 1N5358BE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5358BE3/TR8, 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 1N5358BE3/TR8 part is unused and in its original packaging.
Return procedure for 1N5358BE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5358BE3/TR8 Tags
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