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Vishay General Semiconductor - Diodes Division 1N6277-E3/54
- Part No.:
- 1N6277-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6277-E3/54.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,156
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Product details
Overview
1N6277-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 1500 W peak pulse power rating (10/1000 µs), 17.1–18.9 V breakdown voltage (VBR at 1 mA), 15.3 V maximum working voltage (VWM), 25.2 V clamping voltage (VC at 59.5 A), and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in industrial and automotive systems.
For engineers reviewing the 1N6277-E3/54 datasheet, 1N6277-E3/54 pinout, 1N6277-E3/54 application, or 1N6277-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under standardized surge waveforms, thermal resistance data, and RoHS-compliant commercial-grade sourcing guidance.
Technical Context
The 1N6277-E3/54 implements a glass-passivated silicon PN junction optimized for fast transient suppression with sub-nanosecond response time. Its unidirectional polarity uses a cathode band marking and exhibits low incremental surge resistance, enabling effective clamping of 10/1000 µs surges up to 59.5 A while maintaining 25.2 V VC.
It operates within a 75 °C/W junction-to-ambient thermal resistance (RθJA) and 15.4 °C/W junction-to-lead (RθJL) under standard mounting conditions. The device supports 200 A non-repetitive forward surge current (IFSM) and maintains stable VBR temperature coefficient of +0.089 %/°C - critical for predictable clamping across wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V at 1 mA - defines precise voltage threshold where clamping initiates |
| VWM | 15.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 25.2 V at 59.5 A - peak clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 1500 W - peak pulse power handling capability per industry-standard 10/1000 µs waveform |
| IFSM | 200 A - single half-sine surge current rating (8.3 ms), supporting robust inrush and fault tolerance |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor equipment |
| RθJA | 75 °C/W - thermal resistance defining power derating above 25 °C ambient; requires heatsinking above ~4 W |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), molded epoxy body with matte tin-plated leads; RoHS-compliant, commercial grade (E3 suffix); 0.968 g unit weight; supplied in 13" paper tape and reel (54 mm carrier, 1400 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts during positive transients when cathode is biased higher |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to higher-potential rail (e.g., VCC); avalanches into low-impedance state during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA at VWM) over lifetime and temperature cycling |
| 1500 W peak pulse power (10/1000 µs) | Provides high-energy transient immunity without degradation after repeated surges at 0.01% duty cycle |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience damaging overvoltage - critical for protecting microcontrollers and ADC inputs |
| AEC-Q101 qualification option (HE3 variant) | Enables drop-in use in automotive ECUs when specified as 1N6277AHE3_B; not applicable to E3/54 commercial version |
| UL 94 V-0 flammability rated epoxy | Meets safety standards for enclosure-integrated protection in industrial control panels and power supplies |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and current-sense amplifiers against flyback voltage from relay and solenoid switching. IC Role / Device Role: Primary clamping element placed across DC bus or signal line input to absorb 1500 W inductive spikes. Use Value: Limits transient voltage to ≤25.2 V, preventing latch-up or oxide breakdown in 3.3 V/5 V logic interfaces and MOSFET gate oxides. | Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to load dump and jump-start conditions. IC Role / Device Role: Unidirectional TVS connected between VBAT and ground to clamp positive transients only. Use Value: Withstands 200 A IFSM and maintains 15.3 V stand-off, ensuring uninterrupted operation during ISO 7637-2 Pulse 1/2a events. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Overvoltage protection on 48 V DC power inputs of remote radio units and base station backhaul equipment. IC Role / Device Role: Front-end TVS in series with fuse and common-mode choke to meet IEC 61000-4-5 Level 4 requirements. Use Value: Delivers 1500 W clamping margin with 25.2 V VC, reducing required downstream capacitor sizing and PCB area. | Use Scenario: ESD and surge protection for microcontroller I/O pins controlling relays, displays, and touch sensors in washing machines and HVAC controllers. IC Role / Device Role: Localized TVS mounted adjacent to connector or IC pin to minimize trace inductance. Use Value: Sub-nanosecond response ensures clamping occurs before 100 ns ESD pulses reach MCU GPIO, eliminating firmware resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | Lower peak power (400 W), SMA package (smaller footprint), 18.9 V VBR, 29.2 V VC at 13.7 A | Targeted for space-constrained consumer electronics; insufficient for 1500 W industrial surges | Select SMAJ18A only when board area is critical and surge energy is ≤400 W (e.g., USB port protection). |
| 1.5KE18A | Same electrical specs and DO-201AD package; identical VBR, VWM, VC, PPPM, and thermal ratings; differs only in ordering code format | No functional or application difference - direct form-fit-function replacement | 1.5KE18A is a manufacturer-equivalent part number; interchangeability confirmed by Vishay's cross-reference table (Doc. 88301, p.2). |
Compared with SMAJ18A, 1N6277-E3/54 delivers 275% higher surge power handling and lower clamping voltage per amp, making it suitable for heavy-duty industrial transients; versus 1.5KE18A, it is electrically and mechanically identical - differing only in packaging and tape/reel configuration (E3/54 vs. standard bulk/reel).
Availability
1N6277-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer appliance control boards requiring stable component supply and full traceability.
Supply support for 1N6277-E3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and AEC-Q qualification.
The 1N6277-E3/54 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage tolerance of the 1N6277-E3/54?
The 1N6277-E3/54 has a guaranteed breakdown voltage (VBR) range of 17.1 V to 18.9 V at 1 mA test current, representing ±5.5% tolerance around the nominal 18 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in 15–24 V systems where the 1N6277-E3/54 is commonly deployed.
Is the 1N6277-E3/54 RoHS compliant and lead-free?
Yes, the 1N6277-E3/54 is RoHS compliant and lead-free, as indicated by the "E3" suffix per Vishay's ordering nomenclature. It meets JESD 201 Class 1A whisker test requirements and uses matte tin-plated leads solderable per J-STD-002 and JESD 22-B102 - fully compatible with lead-free reflow processes up to 260 °C peak.
What is the maximum clamping voltage of the 1N6277-E3/54 under surge conditions?
The maximum clamping voltage (VC) of the 1N6277-E3/54 is 25.2 V at 59.5 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - a key parameter for validating safe operation of downstream 3.3 V or 5 V ICs.
Can the 1N6277-E3/54 be used in bidirectional configurations?
No, the 1N6277-E3/54 is strictly unidirectional. Bidirectional variants in the same family carry the "CA" suffix (e.g., 1.5KE18CA). The 1N6277-E3/54 features a cathode band marking and is intended for clamping positive transients only; using it in reverse-biased AC applications would result in forward conduction and failure.
What is the thermal resistance and power derating behavior of the 1N6277-E3/54?
The 1N6277-E3/54 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15.4 °C/W. Its steady-state power dissipation (PD) is rated at 6.5 W at TL = 75 °C, derating linearly to zero at 175 °C junction temperature. For continuous operation above 25 °C ambient, users must apply the derating curve in Fig. 5 of Vishay Doc. 88301 to ensure the 1N6277-E3/54 remains within safe thermal limits.
1N6277-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 56.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1N6277-E3/54 FAQ
1.How can I place an order for 1N6277-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6277-E3/54 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 1N6277-E3/54 reliable?
The price and inventory of 1N6277-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6277-E3/54 is usually 5 days.
3.What payment methods are accepted for 1N6277-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6277-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6277-E3/54?
1N6277-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6277-E3/54 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 1N6277-E3/54?
For technical support, including 1N6277-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6277-E3/54 requirements.
6.How does Aetrix verify that 1N6277-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6277-E3/54 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 1N6277-E3/54 meets industry standards.
7.What is the process for return or replacement of 1N6277-E3/54?
All 1N6277-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6277-E3/54, 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 1N6277-E3/54 part is unused and in its original packaging.
Return procedure for 1N6277-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6277-E3/54 Tags
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