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Microchip Technology 1N5350BE3/TR12
- Part No.:
- 1N5350BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5350BE3/TR12.pdf
- Description:
- DIODE ZENER 13V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,677
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Product details
Overview
1N5350BE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 13 V, ±5% tolerance (B suffix), 100 mA maximum regulator current (IZM), 2.5 Ω maximum dynamic impedance (ZZ) at 100 mA test current, and operates from –65 °C to +150 °C. It delivers stable voltage reference in power supply feedback loops and overvoltage protection circuits requiring robust surge handling and low voltage drift.
For engineers reviewing the 1N5350BE3/TR12 datasheet, 1N5350BE3/TR12 pinout, 1N5350BE3/TR12 application, or 1N5350BE3/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (7.0 A), reverse leakage (<1.0 µA at 9.4 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a precision shunt voltage regulator, maintaining stable output voltage across wide operating current (100 mA IZM) and temperature ranges (–65 °C to +150 °C). Its low dynamic impedance (2.5 Ω) ensures minimal voltage variation under load changes, while its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W operation with minimal heatsinking at 3/8″ lead length.
The 1N5350BE3/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band marking, tin-lead or RoHS-compliant annealed matte-tin leads, and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required. It withstands 8.3 ms half-sine surge currents up to 7.0 A and exhibits <0.25 V voltage regulation (ΔVZ) between 10% and 50% of IZM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V ±5% - precise regulation point for feedback and clamp circuits |
| Test Current (IZT) | 100 mA - standardized bias point for VZ and ZZ measurement |
| Dynamic Impedance (ZZ) | 2.5 Ω max - low AC resistance ensures tight voltage stability under varying load |
| Max Regulator Current (IZM) | 100 mA - maximum continuous DC current at TL = 25 °C with adequate heatsinking |
| Surge Current (IZSM) | 7.0 A - peak non-repetitive 8.3 ms half-sine capability for transient suppression |
| Voltage Regulation (ΔVZ) | 0.25 V max - difference between VZ measured at 10% and 50% of IZM |
| Reverse Leakage (IR) | <1.0 µA at VR = 9.4 V - low off-state current minimizes standby power loss |
Pinout & Package
T-18 axial-leaded plastic package with cathode indicated by color band; leads are tin-lead or RoHS-compliant annealed matte-tin, solderable per MIL-STD-750 Method 2026. Polarity: banded end is cathode (positive terminal during Zener conduction).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to lower-potential node; carries reverse leakage current when biased below VZ |
| Cathode | Banded lead | Connected to higher-potential node; conducts current when reverse voltage ≥ VZ, clamping voltage |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N53xxB mechanical and electrical definitions |
| RoHS-compliant (e3 suffix) | Lead-free matte-tin plating meets EU Directive 2011/65/EU requirements |
| Level 1 moisture sensitivity | No dry pack or baking required before PCB assembly per J-STD-020B |
| High surge endurance | Withstands 7.0 A, 8.3 ms half-sine surges without degradation |
| Low thermal resistance | 25 °C/W junction-to-lead enables full 5 W dissipation with minimal heatsinking |
Applications
| Switching Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in optocoupler-coupled feedback loop of isolated DC-DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Shunt voltage reference providing error signal proportional to output deviation. Use Value: Tight 13 V ±5% tolerance and low ΔVZ (0.25 V) ensure output regulation within ±1.5% over line/load/temperature. |
Use Scenario: Placed across sensitive IC inputs to limit transient overvoltage from ESD or inductive switching. IC Role / Device Role / Timing Role: Clamping element diverting surge current away from protected circuitry. Use Value: 7.0 A surge rating and fast response enable reliable suppression of 8.3 ms transients without failure. |
| Industrial Sensor Excitation | Reference Voltage Source |
Use Scenario: Provides stable excitation voltage for resistive bridge sensors in process control transmitters. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed bias for Wheatstone bridge arms. Use Value: Low ZZ (2.5 Ω) and minimal VZ drift over –40 °C to +85 °C maintain sensor linearity within 0.05% FS. |
Use Scenario: Supplies reference voltage to ADC input stages in data acquisition modules. IC Role / Device Role / Timing Role: Low-noise, temperature-stable voltage source for analog-to-digital conversion. Use Value: 0.25 V ΔVZ and <1.0 µA IR at 9.4 V reduce quantization error and offset drift in 12-bit systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5350B | No TR12 tape-and-reel packaging; bulk or ammo pack only; same electrical specs | Lacks automated placement compatibility; unsuitable for high-volume SMT lines | Select 1N5350B only for prototyping or low-volume through-hole assembly |
| MMSZ5242B-TP | Surface-mount SOD-123 package; 13 V ±5%, 200 mW rating; higher ZZ (20 Ω) | Not suitable for 5 W power dissipation; limited to low-current references | Choose MMSZ5242B-TP only for space-constrained, low-power designs where thermal mass is insufficient for axial devices |
Compared with 1N5350B and MMSZ5242B-TP, the 1N5350BE3/TR12 uniquely combines JEDEC-standard axial form factor, 5 W power handling, tape-and-reel automation support, and industrial-grade surge/thermal performance-making it the only option for high-reliability, medium-power Zener regulation in production environments.
Availability
1N5350BE3/TR12 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, industrial sensor excitation, and precision reference voltage sources requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.
Supply support for 1N5350BE3/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, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized voltage regulation in harsh-environment power systems-emphasizing surge resilience, wide temperature operation, and JEDEC-standard mechanical interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5350BE3/TR12?
The 1N5350BE3/TR12 has a nominal Zener voltage of 13 V with a ±5% tolerance, as indicated by the "B" suffix in its part number. This means the actual VZ falls between 12.35 V and 13.65 V at 100 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance but does not affect voltage tolerance.
Can the 1N5350BE3/TR12 be used in surface-mount designs?
No-the 1N5350BE3/TR12 uses an axial-leaded T-18 package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the SMBJ5350B or SMBG5350B in DO-214AA/DO-214AB packages. These share the same 13 V ±5% regulation but differ in thermal performance and mounting method.
What is the maximum power dissipation of the 1N5350BE3/TR12 at ambient temperature?
When mounted on a standard FR4 PCB with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N5350BE3/TR12 dissipates up to 1.47 W at TA = 25 °C. Its full 5 W rating applies only at TL = 25 °C with 3/8″ (10 mm) lead length from body-requiring external heatsinking for sustained high-power operation.
Does the 1N5350BE3/TR12 require dry packing before reflow soldering?
No-the 1N5350BE3/TR12 has IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, meaning it may be stored and processed indefinitely at ambient conditions without baking or dry pack. Its void-free epoxy encapsulation prevents moisture ingress during standard reflow profiles up to 260 °C for 10 seconds.
How does the 1N5350BE3/TR12 handle transient overvoltage events?
The 1N5350BE3/TR12 is rated for 7.0 A peak non-repetitive surge current (IZSM) in an 8.3 ms half-sine waveform-enabling reliable clamping of common power-line transients and ESD-induced spikes. Its low dynamic impedance (2.5 Ω) and fast turn-on ensure rapid voltage limiting without thermal runaway under defined surge conditions.
1N5350BE3/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):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 9.4 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
1N5350BE3/TR12 FAQ
1.How can I place an order for 1N5350BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5350BE3/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 1N5350BE3/TR12 reliable?
The price and inventory of 1N5350BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5350BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350BE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5350BE3/TR12?
1N5350BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5350BE3/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 1N5350BE3/TR12?
For technical support, including 1N5350BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350BE3/TR12 requirements.
6.How does Aetrix verify that 1N5350BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5350BE3/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 1N5350BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5350BE3/TR12?
All 1N5350BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350BE3/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 1N5350BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5350BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5350BE3/TR12 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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