My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1N6291A-E3/54
- Part No.:
- 1N6291A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6291A-E3/54.pdf
- Description:
- TVS DIODE 58.1VWM 92VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,674
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N6291A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 64.6 V to 71.4 V breakdown voltage (VBR), 58.1 V standoff voltage (VWM), 92.0 V clamping voltage (VC) at 16.3 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1N6291A-E3/54 datasheet, 1N6291A-E3/54 pinout, 1N6291A-E3/54 application, or 1N6291A-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under surge conditions, thermal resistance data, and direct alternatives for circuit-level ESD and lightning transient suppression design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action begins at VBR = 64.6–71.4 V with 1.0 mA test current and limits transient energy to ≤92.0 V at 16.3 A IPPM, enabling robust protection of downstream MOSFETs and ICs against inductive switching spikes and lightning-induced surges.
Rated for 1500 W peak pulse power (10/1000 µs waveform), it sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 3.5 V max forward voltage at 100 A. Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, supporting operation up to 175 °C junction temperature without derating loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 58.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 92.0 V @ 16.3 A - clamped voltage during 10/1000 µs surge, defining worst-case stress on protected device |
| PPPM | 1500 W - peak transient power handling capability per single 10/1000 µs pulse |
| IFSM | 200 A - surge current tolerance for 8.3 ms half-sine wave, critical for motor driver and relay coil snubbing |
| TJ Range | -55 °C to +175 °C - enables deployment in under-hood automotive and high-temperature industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports high-power pulse dissipation without heatsink |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), molded epoxy body with matte tin-plated leads; RoHS-compliant (E3 suffix), commercial grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance reference in unidirectional configuration |
| Cathode | Protected line connection / clamping node | Marked with color band; ties to power rail or signal line requiring transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without cascaded protection stages |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience damaging overvoltage (e.g., <100 ps propagation delay) |
| AEC-Q101 qualified variants available | HE3 suffix versions meet automotive-grade qualification for engine control and body electronics |
| UL 497B recognized | Validated for telecom and industrial surge protector designs requiring safety agency approval |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary clamping element placed between power input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤92.0 V, preventing damage to 36 V-rated input capacitors and LDO regulators. | Use Scenario: Shielding 4–20 mA analog sensor outputs from ESD and field-induced surges in factory automation. IC Role / Device Role / Timing Role: Unidirectional shunt suppressor mounted at connector entry point. Use Value: Clamps 8/20 µs ESD events to <95 V within 1 ns, preserving 12-bit ADC accuracy and isolator integrity. |
| Telecom Line Interface Surge Guard | Consumer Power Adapter Output Clamp |
Use Scenario: Safeguarding DSL/POE line drivers against lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: First-stage TVS in hybrid protection circuit with gas discharge tube and PTC. Use Value: Absorbs 1500 W surge energy without degradation, maintaining UL 497B compliance for telecom infrastructure. | Use Scenario: Preventing output overvoltage in AC/DC adapters due to feedback loop failure or rectifier short. IC Role / Device Role / Timing Role: Secondary-side crowbar device across regulated 5 V/12 V output rail. Use Value: Triggers at 64.6 V and clamps to 92.0 V, protecting USB peripherals and downstream SMPS controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | Lower PPPM (600 W), smaller SMB package (IPPM = 9.9 A @ VC = 103 V), same VWM (55.1 V) | Better suited for space-constrained PCBs; insufficient for 1.5KE-level surge standards | Select when board area is critical and surge requirements are ≤IEC 61000-4-5 Level 2 |
| 1.5KE68A-E3/54 | Identical electrical specs and package; same Vishay manufacturing lot traceability and RoHS compliance | No functional or mechanical difference - alternate part numbering convention used interchangeably | Direct form-fit-function replacement; no redesign required |
Compared with 1N6291A-E3/54, SMBJ64A offers footprint reduction but sacrifices 60% peak power handling, while 1.5KE68A-E3/54 provides identical protection performance with full documentation alignment to the 1.5KE family datasheet.
Availability
1N6291A-E3/54 is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, telecom line protection, and consumer power adapter designs requiring stable component supply and long-lifecycle support.
Supply support for 1N6291A-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 and high-power handling.
The 1N6291A-E3/54 belongs to the TRANSZORB® 1.5KE series - engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage range of the 1N6291A-E3/54?
The 1N6291A-E3/54 has a guaranteed breakdown voltage (VBR) range of 64.6 V to 71.4 V at 1.0 mA test current, measured per JEDEC standard. This range ensures consistent clamping behavior across production lots and supports design margining for 60 V nominal systems. The 1N6291A-E3/54 maintains this specification across its full operating temperature range (-55 °C to +175 °C).
How does the 1N6291A-E3/54 differ from bidirectional TVS diodes like 1N6291CA?
The 1N6291A-E3/54 is unidirectional and features a cathode band marking; it conducts only in reverse bias above VBR, making it ideal for DC power rail protection. In contrast, 1N6291CA is bidirectional with symmetrical clamping in both polarities and no polarity marking - used in AC-coupled or floating signal lines. The 1N6291A-E3/54 cannot replace bidirectional types without circuit redesign.
What is the maximum clamping voltage of the 1N6291A-E3/54 under surge conditions?
The 1N6291A-E3/54 clamps to a maximum of 92.0 V at 16.3 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is validated per Fig. 7 of the Vishay 88301 datasheet. The 1N6291A-E3/54 achieves this with sub-nanosecond response, minimizing overshoot.
Is the 1N6291A-E3/54 suitable for automotive applications?
The base 1N6291A-E3/54 is commercial grade; however, the AEC-Q101 qualified variant 1N6291AHE3_B is available for automotive use. That version undergoes extended temperature cycling, humidity testing, and surge validation per AEC-Q101 Rev D. For under-hood modules or ADAS sensors requiring automotive qualification, specify the HE3_B suffix - the 1N6291A-E3/54 itself is not AEC-Q101 certified.
What package type does the 1N6291A-E3/54 use and what are its key mechanical properties?
The 1N6291A-E3/54 uses the JEDEC DO-201AD package (Case Style 1.5KE), with 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter, and matte tin-plated leads compliant with J-STD-002. Its molded epoxy body meets UL 94 V-0 flammability rating, and the E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance - all documented in the 1N6291A-E3/54 ordering information table.
1N6291A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- 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
1N6291A-E3/54 FAQ
1.How can I place an order for 1N6291A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6291A-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 1N6291A-E3/54 reliable?
The price and inventory of 1N6291A-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 1N6291A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1N6291A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6291A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6291A-E3/54?
1N6291A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6291A-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 1N6291A-E3/54?
For technical support, including 1N6291A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6291A-E3/54 requirements.
6.How does Aetrix verify that 1N6291A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6291A-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 1N6291A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1N6291A-E3/54?
All 1N6291A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6291A-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 1N6291A-E3/54 part is unused and in its original packaging.
Return procedure for 1N6291A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6291A-E3/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
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…
