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Microchip Technology 1N5369BE3/TR12
- Part No.:
- 1N5369BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5369BE3/TR12.pdf
- Description:
- DIODE ZENER 51V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,760
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Product details
Overview
1N5369BE3/TR12 from Microsemi is a 51 V, ±5% tolerance, 5 W axial-leaded silicon Zener diode optimized for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation. It delivers 25 mA test current (IZT), 27 Ω dynamic impedance (ZZ), and 230 mA maximum Zener current (IZM) with 2.5 V voltage regulation (ΔVZ) across 10–50% IZM.
For engineers reviewing the 1N5369BE3/TR12 datasheet, 1N5369BE3/TR12 pinout, 1N5369BE3/TR12 application, or 1N5369BE3/TR12 equivalent, key selection criteria include its 51 V nominal Zener voltage, ±5% tolerance (B suffix), RoHS-compliant e3 marking, tape-and-reel TR12 packaging, and thermal resistance of 25 °C/W junction-to-lead at 10 mm lead length.
Technical Context
This device operates as a two-terminal voltage reference with cathode-banded polarity, requiring reverse-bias connection where the banded end is positive relative to the anode. Its regulation performance is specified at TL = 25 °C with 40 ms DC current application, and it maintains stable VZ across -65 °C to +150 °C operating temperature range.
The 1N5369BE3/TR12 exhibits low dynamic impedance (27 Ω at 25 mA) and tight voltage regulation (2.5 V ΔVZ), enabling accurate clamping in transient suppression and stable biasing in analog circuits. Its 8.3 ms non-recurrent half-sine surge rating (IZSM = 230 A) supports robust overvoltage event handling without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 51 V nominal, ±5% tolerance - defines precise clamping threshold for feedback and protection circuits |
| Power Dissipation | 5.0 W at TL < 25 °C (3/8″ lead length) - sets maximum continuous DC power handling with adequate heatsinking |
| Test Current (IZT) | 25 mA - operating point at which VZ and ZZ are guaranteed per JEDEC spec |
| Dynamic Impedance (ZZ) | 27 Ω at IZT - determines small-signal AC voltage variation under load changes |
| Max Zener Current (IZM) | 230 mA - peak steady-state reverse current before thermal runaway at rated power |
| Voltage Regulation (ΔVZ) | 2.5 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Surge Current (IZSM) | 230 A (8.3 ms half-sine) - single-event transient energy absorption capability |
Pinout & Package
Package: Axial-leaded T-18 plastic case (JEDEC DO-201AD), void-free thermosetting epoxy body (UL94V-0), matte-tin plated leads, cathode indicated by band. Weight: 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current entry terminal in forward bias; reference ground node in reverse-bias regulation | Connected to system ground or low-side return path when used as shunt regulator |
| Cathode (banded end) | Current exit terminal in forward bias; regulated output node in reverse bias | Connected to voltage node requiring clamping or reference; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant construction | e3 suffix confirms lead-free matte-tin plating and halogen-free epoxy, meeting environmental compliance mandates |
| Moisture sensitivity Level 1 | No dry pack required - simplifies SMT handling and eliminates bake-out prior to assembly |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - withstands typical handling ESD without parameter shift |
| High surge current rating | 230 A (8.3 ms half-sine) - enables use in primary-side transient suppression without external crowbar |
| Stable regulation over temperature | Operates from -65 °C to +150 °C - suitable for automotive under-hood and industrial control environments |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler interface. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 51 V reference to error amplifier input. Use Value: Enables ±1% output regulation accuracy despite line/load variations due to low ΔVZ (2.5 V) and 27 Ω ZZ. |
Use Scenario: Clamps rail voltage during load dump or inductive kick events in 48 V industrial systems. IC Role / Device Role / Timing Role: Two-terminal passive clamp absorbing transient energy above 51 V threshold. Use Value: Withstands 230 A surge (8.3 ms) without failure, eliminating need for series fuse or TVS array in cost-sensitive designs. |
| Precision Analog Reference Source | Industrial Sensor Excitation |
Use Scenario: Supplies stable excitation voltage to bridge-based pressure or strain sensors in data acquisition modules. IC Role / Device Role / Timing Role: Low-drift, low-noise DC reference source replacing higher-cost IC references. Use Value: Delivers 51 V ±5% with 2.5 V regulation window, supporting 16-bit ADC full-scale accuracy in 0–50 V measurement ranges. |
Use Scenario: Provides regulated bias to high-voltage piezoresistive sensors in factory automation equipment. IC Role / Device Role / Timing Role: Fixed-voltage shunt regulator maintaining constant sensor excitation under varying supply conditions. Use Value: Maintains excitation stability across -40 °C to +105 °C ambient due to wide operating temperature range (-65 °C to +150 °C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5369B (non-e3, bulk) | Identical electrical specs but SnPb lead finish and bulk packaging; lacks RoHS compliance and tape/reel convenience | Not suitable for RoHS-compliant production; requires manual loading or tube-to-tape conversion | Select only for legacy repair or non-RoHS prototyping where e3 compliance is not mandated |
| MMSZ5255B-TP (Micro Commercial Components) | Surface-mount SOD-123 package; same 51 V / ±5% / 500 mW rating - lower power, different thermal profile | Designed for space-constrained PCBs; cannot replace 1N5369BE3/TR12 without layout change and derating | Choose for new compact designs where axial leads are impractical; verify thermal margin at 500 mW vs. 5 W rating |
Compared with 1N5369B and MMSZ5255B-TP, the 1N5369BE3/TR12 uniquely combines 5 W power handling, axial mounting flexibility, RoHS compliance, and tape-and-reel readiness - making it optimal for high-reliability industrial power supplies requiring field-proven ruggedness and supply chain continuity.
Availability
1N5369BE3/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and precision analog reference sources requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for 1N5369BE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was engineered for ruggedized 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 1N5369BE3/TR12?
The 1N5369BE3/TR12 has a ±5% Zener voltage tolerance, confirmed by the "B" suffix in its part number per Microsemi's documentation. This means its actual VZ falls within 48.45 V to 53.55 V at 25 °C lead temperature. The e3 suffix indicates RoHS compliance but does not affect tolerance. This tolerance is tighter than the ±10% (A suffix) or ±20% (no suffix) variants in the same family.
How is the 1N5369BE3/TR12 packaged and what does "TR12" signify?
The "TR12" suffix denotes tape-and-reel packaging per EIA-296 standard, containing 12,000 units per reel. The 1N5369BE3/TR12 uses axial-leaded T-18 (DO-201AD) plastic encapsulation with matte-tin plated leads. Its 0.7 g weight and 10 mm lead length are specified for thermal resistance calculations. The e3 marking confirms RoHS-compliant finish.
What is the maximum steady-state current the 1N5369BE3/TR12 can handle?
The 1N5369BE3/TR12 supports a maximum Zener current (IZM) of 230 mA when adequately heat sunk at TL < 25 °C with 10 mm lead length. At ambient mounting on FR4 (1 oz Cu, 4 mm² pad), its steady-state power drops to 1.47 W, limiting usable current to approximately 28.8 mA at 51 V. Derating curves in Figure 1 define safe operation above 25 °C.
Does the 1N5369BE3/TR12 require special handling for moisture sensitivity?
No - the 1N5369BE3/TR12 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it is not humidity-sensitive and requires no dry pack or baking prior to soldering. Its void-free epoxy body and RoHS-compliant plating enable direct placement into reflow or wave solder processes without preconditioning.
Can the 1N5369BE3/TR12 be used in automotive under-hood applications?
Yes - the 1N5369BE3/TR12 is rated for -65 °C to +150 °C operating and storage temperature, exceeding AEC-Q200 requirements for under-hood use. Its 230 A surge rating and nonsensitivity to ESD per MIL-STD-750 Method 1020 further support deployment in engine control units and battery management systems where thermal and transient stress are critical.
1N5369BE3/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):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 27 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 36.7 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
1N5369BE3/TR12 FAQ
1.How can I place an order for 1N5369BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5369BE3/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 1N5369BE3/TR12 reliable?
The price and inventory of 1N5369BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5369BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5369BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5369BE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5369BE3/TR12?
1N5369BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5369BE3/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 1N5369BE3/TR12?
For technical support, including 1N5369BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5369BE3/TR12 requirements.
6.How does Aetrix verify that 1N5369BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5369BE3/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 1N5369BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5369BE3/TR12?
All 1N5369BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5369BE3/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 1N5369BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5369BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5369BE3/TR12 Tags
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