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Microchip Technology 1N5356BE3/TR12
- Part No.:
- 1N5356BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5356BE3/TR12.pdf
- Description:
- DIODE ZENER 19V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,384
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Product details
Overview
1N5356BE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 19 V, ±5% tolerance (B suffix), 65 mA test current (IZT), 3.0 Ω maximum dynamic impedance (ZZ), and 0.5 μA maximum reverse leakage at 14.4 V (VR). 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 1N5356BE3/TR12 datasheet, 1N5356BE3/TR12 pinout, 1N5356BE3/TR12 application, or 1N5356BE3/TR12 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 functions as a two-terminal voltage regulator operating in reverse breakdown, maintaining stable output voltage across wide current (10–75 mA) and temperature (–65°C to +150°C) ranges. Its low dynamic impedance (3.0 Ω) and tight voltage regulation (ΔVZ = 0.40 V) ensure minimal deviation under load transients.
The 1N5356BE3/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band marking, rated for 5.0 W steady-state dissipation at 25°C lead temperature (3/8″ from body), and exhibits 0.7 g mass and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19 V ±5% - precise regulation point for feedback networks requiring stable 19 V reference |
| Test Current (IZT) | 65 mA - defined operating point where VZ and ZZ are specified; sets minimum bias for regulation |
| Dynamic Impedance (ZZ) | 3.0 Ω max - low AC resistance ensures minimal output voltage shift during current variations |
| Max Reverse Leakage (IR) | 0.5 μA at VR = 14.4 V - ultra-low leakage preserves efficiency in high-impedance bias circuits |
| Max Regulator Current (IZM) | 75 mA - maximum DC current before exceeding 5 W power limit at TL = 25°C |
| Surge Current (IZSM) | 75 A (8.3 ms half-sine) - withstands transient overloads without degradation |
| Voltage Regulation (ΔVZ) | 0.40 V - difference between VZ measured at 10% and 50% of IZM; quantifies line regulation performance |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free thermosetting epoxy, UL94V-0), cathode indicated by colored band. Leads are RoHS-compliant annealed matte-tin plated, solderable per MIL-STD-750 Method 2026. Weight: 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to circuit ground or lower-potential rail; defines polarity for reverse-bias operation |
| Cathode | Zener breakdown terminal / Regulated output node | Banded end; connected to unregulated input; delivers stable 19 V to load when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| ±5% voltage tolerance (B suffix) | Enables tighter regulation than ±10% (A) or ±20% (no suffix) variants in feedback-critical designs |
| RoHS-compliant e3 suffix | Meets EU RoHS Directive 2011/65/EU; matte-tin plating eliminates lead-based solder compatibility issues |
| Level 1 moisture sensitivity | No dry pack required; simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces risk of field failure during handling or board-level integration without special precautions |
Applications
| Switching Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback paths using optocoupler-coupled error amplifiers. IC Role / Device Role / Timing Role: Primary-side voltage reference providing accurate 19 V threshold for error signal generation. Use Value: Maintains ±1% output regulation across line/load/temperature due to low ΔVZ (0.40 V) and stable VZ over 65–75 mA operating range. |
Use Scenario: Clamping transient surges on 24 V industrial control bus lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Shunt protection element diverting excess energy to ground when bus voltage exceeds 19 V. Use Value: Withstands 75 A surge (8.3 ms) without failure while holding clamped voltage within 19.4 V (VZM), limiting downstream IC stress. |
| Programmable Voltage Reference | DC-DC Converter Trim Circuit |
Use Scenario: Generating precision bias voltages for analog sensor front-ends or ADC reference buffers in embedded instrumentation. IC Role / Device Role / Timing Role: Stable 19 V source feeding resistive divider to derive lower reference points (e.g., 5 V, 3.3 V). Use Value: Low 0.5 μA leakage at 14.4 V prevents loading errors in high-impedance divider networks; ±5% tolerance ensures predictable scaling. |
Use Scenario: Fine-tuning output voltage of adjustable DC-DC modules (e.g., LM2596-based supplies) via feedback node injection. IC Role / Device Role / Timing Role: Adjustable shunt element modifying effective feedback resistor ratio to shift regulated output. Use Value: 3.0 Ω dynamic impedance minimizes interaction with feedback loop dynamics, preserving stability during trim adjustments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5356B | No TR12 tape-and-reel packaging; bulk or ammo pack only; identical electrical specs and T-18 package | Lacks automated SMT placement support; suitable for manual prototyping or low-volume through-hole assembly | Select 1N5356B when reel packaging is unnecessary and cost-per-unit is prioritized over placement automation. |
| MMBZ5247BS-7-F | Surface-mount SOD-123 package; 19 V ±5%, but lower 0.5 W power rating and 100 mA IZM; not axial-leaded | Designed for space-constrained PCBs; unsuitable for high-power dissipation or legacy through-hole layouts | Choose MMBZ5247BS-7-F only for compact, low-power applications where thermal mass and lead length constraints prohibit axial devices. |
Compared with 1N5356BE3/TR12, the 1N5356B offers identical regulation performance without tape-and-reel convenience, while MMBZ5247BS-7-F trades power handling (5 W → 0.5 W) and mounting method (axial → SMT) for board area reduction-neither is pin-compatible, and both require layout or thermal redesign.
Availability
1N5356BE3/TR12 is available at Aetrix Electronics and suitable for switching power supply feedback, overvoltage protection clamp, and programmable voltage reference applications requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for 1N5356BE3/TR12 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 markets.
The 1N53xxB series was engineered for robust voltage regulation in harsh environments, emphasizing thermal resilience, surge survivability, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of 1N5356BE3/TR12?
The 1N5356BE3/TR12 has a nominal Zener voltage of 19 V with ±5% tolerance, as indicated by the "B" suffix per Microsemi's documentation. This means the actual VZ falls between 18.05 V and 19.95 V at 65 mA test current and 25°C lead temperature. The e3 suffix confirms RoHS compliance but does not affect voltage tolerance.
Can 1N5356BE3/TR12 be used in surface-mount designs?
No, the 1N5356BE3/TR12 is an axial-leaded T-18 package device intended for through-hole mounting only. It lacks solder pads or terminations compatible with reflow soldering. For surface-mount equivalents, consider SMBJ5356B or MMBZ5247BS-7-F-but note their lower power ratings and different thermal profiles.
What is the maximum power dissipation of 1N5356BE3/TR12 at 25°C?
The 1N5356BE3/TR12 is rated for 5.0 W steady-state power dissipation at TL = 25°C with 3/8″ (10 mm) lead length from the body. Derating is required above 25°C: thermal resistance is 25 °C/W junction-to-lead, so usable power drops linearly-e.g., 3.75 W at TL = 50°C.
How does the voltage regulation (ΔVZ) specification impact circuit performance for 1N5356BE3/TR12?
The ΔVZ of 0.40 V for 1N5356BE3/TR12 specifies the change in Zener voltage between 10% and 50% of IZM (7.5 mA to 37.5 mA). This low value ensures consistent regulation across typical operating currents, reducing output drift in feedback networks and improving load regulation in power supplies.
Is 1N5356BE3/TR12 suitable for automotive under-hood applications?
Yes-the 1N5356BE3/TR12 operates from –65°C to +150°C and meets MIL-PRF-19500 screening levels (with MQ/MX/MV prefixes). Its epoxy package, Level 1 moisture sensitivity, and nonsensitivity to ESD per MIL-STD-750 make it viable for under-hood use, provided mechanical mounting and thermal sinking meet automotive vibration and heat dissipation requirements.
1N5356BE3/TR12 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):
- 19 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 13.7 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
1N5356BE3/TR12 FAQ
1.How can I place an order for 1N5356BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5356BE3/TR12 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 1N5356BE3/TR12 reliable?
The price and inventory of 1N5356BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5356BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5356BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5356BE3/TR12 transactions.
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4.How is shipping managed for 1N5356BE3/TR12?
1N5356BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5356BE3/TR12 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 1N5356BE3/TR12?
For technical support, including 1N5356BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5356BE3/TR12 requirements.
6.How does Aetrix verify that 1N5356BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5356BE3/TR12 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 1N5356BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5356BE3/TR12?
All 1N5356BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5356BE3/TR12, 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 1N5356BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5356BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5356BE3/TR12 Tags
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