My Inquiry
My Account
Microchip Technology 1N5362BE3/TR12
- Part No.:
- 1N5362BE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5362BE3/TR12.pdf
- Description:
- DIODE ZENER 28V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5362BE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 28 V, ±5% tolerance (B suffix), 6.0 Ω dynamic impedance at 50 mA test current, and maximum reverse current of 0.5 μA at 21.2 V. It operates from –65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in DC power supplies.
For engineers reviewing the 1N5362BE3/TR12 datasheet, 1N5362BE3/TR12 pinout, 1N5362BE3/TR12 application, or 1N5362BE3/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (130 A), 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 mode. Its Zener voltage is specified at 28 V ±5% under 50 mA dc test current (IZT), with dynamic impedance measured at 1 kHz ac modulation (6.0 Ω) and voltage regulation (ΔVZ) of 3.9 V between 10% and 50% of IZM.
Thermal design relies on lead-temperature derating: full 5 W dissipation is rated at TL = 25 °C (3/8″ from body); junction-to-ambient thermal resistance is 85 °C/W on FR4 with defined copper pad geometry. Polarity is marked by cathode band; operation requires banded end positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28 V ±5% at 50 mA - defines stable regulation point under nominal bias |
| Power Dissipation (Pd) | 5.0 W at TL = 25 °C - requires heat sinking above ambient for sustained operation |
| Dynamic Impedance (ZZ) | 6.0 Ω at IZT = 50 mA - low impedance ensures minimal output voltage shift with load current changes |
| Max Reverse Current (IR) | 0.5 μA at VR = 21.2 V - confirms tight leakage control below knee voltage |
| Surge Current (IZSM) | 130 A (8.3 ms half-sine) - supports transient overvoltage clamping without failure |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - enables direct thermal path modeling for PCB lead-mounting |
| Operating Temperature | –65 °C to +150 °C - qualified for industrial and extended-temperature environments |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode indicated by color band; leads are annealed matte-tin plated per MIL-STD-750, solderable at 260 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-bias polarity requires this terminal negative relative to cathode |
| Cathode (banded end) | Regulated output node | Provides stable 28 V reference when reverse-biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures standardized electrical behavior and interchangeability across qualified suppliers |
| Moisture sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to assembly |
| e3 RoHS-compliant plating | Matte-tin termination meets lead-free soldering requirements without SnPb contamination risk |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for special ESD handling during board assembly and testing |
| High surge current capability | 130 A rating enables robust transient suppression in unregulated input stages |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing output of linear regulators or shunt-based feedback networks in industrial power modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 28 V setpoint for error amplifiers or comparators. Use Value: Maintains ±5% regulation across 10–50 mA operating range with only 3.9 V total voltage variation (ΔVZ). |
Use Scenario: Clamping input rails against surges in automotive battery-connected electronics. IC Role / Device Role / Timing Role: Standby overvoltage clamp activated during load-dump transients. Use Value: Withstands 130 A surge (8.3 ms) without degradation, protecting downstream MOSFETs and controllers. |
| Temperature-Stable Reference Source | Programmable Current Sink Bias |
Use Scenario: Generating fixed bias voltages for op-amp input stages in sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Low-drift 28 V reference enabling ratiometric scaling of analog front-ends. Use Value: Operates reliably from –65 °C to +150 °C with <0.5 μA leakage at 21.2 V, minimizing temperature-induced offset. |
Use Scenario: Setting constant current for LED driver bias or analog calibration circuits. IC Role / Device Role / Timing Role: Precision current sink formed with series resistor and 28 V Zener reference. Use Value: 6.0 Ω dynamic impedance ensures <±0.3 V current-setting error over 10–50 mA range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5362B | No TR12 tape-and-reel packaging; same electrical specs and e3 plating | Manual placement or low-volume prototyping where reel format is unnecessary | Select 1N5362B for hand-soldered evaluation or small-batch builds without automated pick-and-place |
| MMSZ5262ET1G | Surface-mount SOD-123 package (200 mW), 28 V ±5%, 30 Ω Zz at 20 mA | Space-constrained PCBs requiring SMT assembly instead of axial through-hole mounting | Choose MMSZ5262ET1G only when board layout mandates SMT and thermal load remains ≤200 mW |
Compared with 1N5362BE3/TR12, the 1N5362B offers identical regulation performance without tape-and-reel convenience, while MMSZ5262ET1G trades 5 W power handling and axial mechanical robustness for compact SMT fit-neither is pin-compatible, and substitution requires layout and thermal redesign.
Availability
1N5362BE3/TR12 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and temperature-stable reference source applications requiring stable component supply, long-term obsolescence mitigation, and traceable sourcing.
Supply support for 1N5362BE3/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N53xxB series was engineered specifically for ruggedized 5 W voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and MIL-compliant screening options.
FAQ
What is the Zener voltage tolerance of the 1N5362BE3/TR12?
The 1N5362BE3/TR12 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its nominal 28 V regulation point falls within 26.6 V to 29.4 V at 50 mA test current and 25 °C lead temperature. The e3 suffix confirms RoHS compliance, and TR12 denotes tape-and-reel packaging per EIA-296 standard.
Can the 1N5362BE3/TR12 replace a 1N5362B in existing designs?
Yes-the 1N5362BE3/TR12 is functionally identical to the 1N5362B in all electrical and thermal specifications. The only differences are the e3 RoHS-compliant plating and TR12 tape-and-reel packaging. No circuit or layout changes are needed; it is a drop-in replacement for automated assembly where reel format is required.
What is the maximum surge current rating for the 1N5362BE3/TR12?
The 1N5362BE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 130 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating assumes proper PCB thermal relief and is validated per JEDEC test conditions-exceeding this value risks irreversible junction damage even if average power remains within limits.
How does the thermal resistance of the 1N5362BE3/TR12 affect PCB layout?
The 1N5362BE3/TR12 has a junction-to-lead thermal resistance of 25 °C/W when mounted with 3/8″ (10 mm) lead length from body. To sustain 5 W dissipation, PCB traces must provide adequate copper mass and airflow; on FR4 with 4 mm² pads, junction-to-ambient resistance rises to 85 °C/W, limiting continuous power to ~1.47 W at 25 °C ambient.
Is the 1N5362BE3/TR12 suitable for use in automotive applications?
Yes-the 1N5362BE3/TR12 operates across –65 °C to +150 °C and meets MIL-PRF-19500 screening levels when ordered with MQ/MX/MV prefixes. While the base 1N5362BE3/TR12 is not pre-screened, its construction (UL94V-0 epoxy, matte-tin leads, ESD-nonsensitive) aligns with automotive under-hood environmental requirements when paired with appropriate system-level qualification.
1N5362BE3/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):
- 28 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 20.1 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
1N5362BE3/TR12 FAQ
1.How can I place an order for 1N5362BE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5362BE3/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 1N5362BE3/TR12 reliable?
The price and inventory of 1N5362BE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362BE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5362BE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362BE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5362BE3/TR12?
1N5362BE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5362BE3/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 1N5362BE3/TR12?
For technical support, including 1N5362BE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362BE3/TR12 requirements.
6.How does Aetrix verify that 1N5362BE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5362BE3/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 1N5362BE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5362BE3/TR12?
All 1N5362BE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362BE3/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 1N5362BE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5362BE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5362BE3/TR12 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
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
