My Inquiry
My Account
Microchip Technology 1N5355BE3/TR13
- Part No.:
- 1N5355BE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5355BE3/TR13.pdf
- Description:
- DIODE ZENER 18V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,019
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5355BE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 18 V, ±5% tolerance (B suffix), 65 mA test current (IZT), 2.5 Ω dynamic impedance (ZZ), and 75 mA maximum Zener current (IZM) at 25°C lead temperature. It regulates voltage in power supply feedback loops, overvoltage protection circuits, and reference voltage generation for industrial power converters.
For engineers reviewing the 1N5355BE3/TR13 datasheet, 1N5355BE3/TR13 pinout, 1N5355BE3/TR13 application, or 1N5355BE3/TR13 equivalent, key selection criteria include Zener voltage accuracy, 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 operates as a reverse-biased voltage reference with stable regulation across 10–50% of IZM (7.5–37.5 mA). Its low dynamic impedance (2.5 Ω) ensures minimal voltage variation under load changes, and its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation with 3/8″ (10 mm) lead length heat sinking.
Designed for DC voltage stabilization, it exhibits 0.40 V voltage regulation (ΔVZ) between 10% and 50% of IZM, withstands 8.3 ms non-repetitive half-sine surge currents up to 75 A, and maintains operation from –65°C to +150°C with moisture sensitivity level 1 (no dry pack required).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18 V ±5% - precise reference for feedback networks requiring tight regulation tolerance |
| Test Current (IZT) | 65 mA - operating point where VZ and ZZ are specified; defines stable bias condition |
| Dynamic Impedance (ZZ) | 2.5 Ω - low AC resistance ensures minimal output voltage drift under varying load current |
| Max Zener Current (IZM) | 75 mA - maximum continuous DC current at TL = 25°C with adequate heat sinking |
| Power Dissipation | 5.0 W at TL < 25°C - supports high-current regulation when leads act as heatsink |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable thermal design with 10 mm lead length |
| Voltage Regulation (ΔVZ) | 0.40 V - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity |
| Surge Current (IZSM) | 75 A (8.3 ms half-sine) - robust transient suppression capability for input-stage clamping |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), cathode indicated by band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit ground or lower-potential node in reverse-bias regulation configuration |
| Cathode | Zener regulation terminal / Output reference node | Banded end; connected to regulated voltage node; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB mechanical and electrical specifications for interchangeability |
| ±5% voltage tolerance | Ensures consistent 18 V reference across production batches without post-assembly trimming |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and bake-out prior to PCB assembly |
| Nonsensitive to ESD | Withstands MIL-STD-750 Method 1020 ESD stress without parameter shift or failure |
| RoHS-compliant (e3 suffix) | Meets EU Directive 2011/65/EU with annealed matte-tin plating and lead-free construction |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Zener reference providing stable 18 V threshold for TL431-type shunt regulator or discrete error amplifier. Use Value: Maintains ±1% output regulation over line/load/temperature with 2.5 Ω dynamic impedance minimizing feedback loop gain variation. | Use Scenario: Clamps transient surges on 24 V DC input rail of industrial PLC I/O module during inductive load switching. IC Role / Device Role / Timing Role: Standalone overvoltage clamp absorbing 8.3 ms surges up to 75 A without degradation. Use Value: Prevents downstream IC damage by limiting rail voltage to ≤20.1 V (VZM at +5%) during transients. |
| Precision Voltage Reference | DC-DC Converter Bias Supply |
Use Scenario: Generates stable 18 V reference for ADC voltage reference buffer or analog sensor excitation circuit. IC Role / Device Role / Timing Role: Low-noise, low-drift Zener source replacing higher-cost bandgap references where 0.40 V ΔVZ is acceptable. Use Value: Delivers 18 V ±0.9 V over 10–50% IZM range, enabling 12-bit system accuracy without calibration. | Use Scenario: Powers gate driver IC bias rails in 48 V automotive DC-DC buck converter with wide input transients. IC Role / Device Role / Timing Role: Pre-regulator supplying clean 18 V to isolated driver ICs from noisy 48 V bus. Use Value: Sustains 5 W dissipation with 25 °C/W thermal resistance, eliminating need for external heatsink in compact layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5355B | No e3 RoHS suffix; tin-lead plating; same VZ, IZT, ZZ, IZM, and package | Not compliant with EU RoHS Directive 2011/65/EU; requires exemption documentation for export | Select when legacy tin-lead assembly process is used and RoHS compliance is not required |
| SMBJ5355B | Surface-mount SMB package; identical electrical specs but 85 °C/W junction-to-ambient thermal resistance | Lower power derating on FR4 board (1.47 W vs. 5 W); unsuitable for high-current regulation without copper pour | Select for space-constrained designs where board-level thermal management allows lower dissipation |
Compared with 1N5355B and SMBJ5355B, the 1N5355BE3/TR13 uniquely combines RoHS compliance, axial-leaded mechanical robustness, and full 5 W lead-temperature-rated dissipation-making it optimal for industrial power supplies requiring field-replaceable through-hole components with traceable sourcing.
Availability
1N5355BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and telecom DC-DC converters requiring stable component supply with full RoHS compliance and JEDEC-standard interchangeability.
Supply support for 1N5355BE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and long-term parametric consistency under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5355BE3/TR13?
The 1N5355BE3/TR13 has a Zener voltage tolerance of ±5%, denoted by the "B" suffix in its part number. This means its nominal 18 V regulation voltage falls within 17.1 V to 18.9 V at 65 mA test current and 25°C lead temperature, as confirmed in Microsemi's official 1N5333B–1N5388B datasheet Rev D.
Can the 1N5355BE3/TR13 be used in surface-mount designs?
No-the 1N5355BE3/TR13 is an axial-leaded T-18 package and is not compatible with SMT reflow processes. For surface-mount equivalents, Microsemi specifies the SMBJ5355B (SMB package) or SMBG5355B, which share identical electrical characteristics but require different thermal and layout considerations due to higher junction-to-ambient resistance.
What is the maximum surge current rating for the 1N5355BE3/TR13?
The 1N5355BE3/TR13 is rated for a non-repetitive peak surge current (IZSM) of 75 A, defined as an 8.3 ms half-sine waveform. This rating is validated per Microsemi's test conditions and supports transient clamping in industrial power inputs without degradation when operated within specified thermal limits.
Does the 1N5355BE3/TR13 require dry packing before PCB assembly?
No-the 1N5355BE3/TR13 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored and assembled without dry packing or baking. Its void-free UL94V-0 epoxy encapsulation prevents moisture ingress, eliminating pre-assembly handling constraints.
How does the thermal resistance of the 1N5355BE3/TR13 affect its power dissipation capability?
The 1N5355BE3/TR13 has a junction-to-lead thermal resistance of 25 °C/W at 3/8″ (10 mm) lead length. This enables full 5.0 W dissipation at TL < 25°C, but derates linearly above that temperature-e.g., only ~3.75 W at TL = 50°C. Effective heat sinking via PCB copper or chassis mounting is essential to maintain rated power.
1N5355BE3/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):
- 18 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 13 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
1N5355BE3/TR13 FAQ
1.How can I place an order for 1N5355BE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5355BE3/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 1N5355BE3/TR13 reliable?
The price and inventory of 1N5355BE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5355BE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N5355BE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5355BE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5355BE3/TR13?
1N5355BE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5355BE3/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 1N5355BE3/TR13?
For technical support, including 1N5355BE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5355BE3/TR13 requirements.
6.How does Aetrix verify that 1N5355BE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5355BE3/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 1N5355BE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5355BE3/TR13?
All 1N5355BE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5355BE3/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 1N5355BE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5355BE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5355BE3/TR13 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
