My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1N6297A-E3/51
- Part No.:
- 1N6297A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6297A-E3/51.pdf
- Description:
- TVS DIODE 102VWM 165VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,088
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N6297A-E3/51 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 114 V to 126 V breakdown voltage (VBR), 102 V maximum working voltage (VWM), 165 V clamping voltage (VC) at 9.1 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - used in automotive power supply input stages and industrial I/O protection.
For engineers reviewing the 1N6297A-E3/51 datasheet, 1N6297A-E3/51 pinout, 1N6297A-E3/51 application, or 1N6297A-E3/51 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal resistance data, and direct alternative part comparisons - all confirmed from Vishay's official 88301 document revision 09-Aug-2022.
Technical Context
This device uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive transients only, with a 3.5 V forward voltage at 100 A per JEDEC specification.
The 1N6297A-E3/51 is rated for 1500 W peak pulse power (10/1000 µs waveform), derated linearly above 25 °C ambient, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). Thermal resistance is 15.4 °C/W junction-to-lead, enabling robust heat dissipation in PCB-mounted applications without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at 1 mA test current - defines precise voltage threshold where clamping initiates |
| VWM | 102 V maximum - ensures reliable blocking during normal operation without leakage |
| VC @ IPPM | 165 V at 9.1 A - limits downstream voltage stress during 10/1000 µs surges |
| PPPM | 1500 W - sustains high-energy lightning-induced transients per IEC 61000-4-5 |
| IFSM | 200 A (8.3 ms half-sine) - handles inrush and fault currents without bond-wire failure |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial environments |
| RθJL | 15.4 °C/W - enables direct PCB thermal path design without external heatsink |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS compliant (E3 suffix), 0.375" lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path |
| Cathode | Clamping reference node | Marked with color band; tied to protected line (e.g., 12 V rail or CAN_H) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment |
| Clamping time < 1 ns | Protects sensitive gate oxides in MOSFETs and IC inputs before damage occurs |
| Low incremental surge resistance | Minimizes VC overshoot during high-di/dt events like relay coil flyback |
| AEC-Q101 qualified option available | HE3 variant supports automotive powertrain and body electronics qualification requirements |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery rail exposed to load dump (ISO 16750-2) and alternator ripple in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and DC-DC converter input. Use Value: Clamps transients up to 120 V peak to ≤165 V within 1 ns, preventing regulator latch-up or MOSFET avalanche failure. |
Use Scenario: 4–20 mA analog sensor loop in factory automation subject to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Cathode tied to signal line, anode to system ground - shunts fast transients away from ADC front-end. Use Value: Limits voltage excursion to 165 V during 1 kV/500 Ω contact discharge, preserving 24-bit SAR ADC accuracy and isolation barrier integrity. |
| Telecom AC/DC Adapter Surge Clamp | Motor Drive Gate Driver Protection |
Use Scenario: Secondary-side output of offline SMPS powering VoIP phones, exposed to conducted surges via Ethernet or phone line coupling. IC Role / Device Role / Timing Role: Mounted across +5 V output and GND to suppress ring wave transients (IEC 61000-4-12). Use Value: Absorbs 1500 W for 1 ms without degradation, maintaining regulated output within ±5 % during surge recovery. |
Use Scenario: High-side gate drive rail (e.g., 15 V) in three-phase inverter subject to Miller-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-gate rail to clamp positive-going spikes above 102 V. Use Value: Prevents gate oxide breakdown by limiting VGS to ≤165 V, enabling reliable 20 kHz PWM operation with <100 ns recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | Lower PPPM (600 W), smaller SMB package (vs. 1.5KE axial), VC = 196 V @ 3.1 A | Better suited for space-constrained PCBs; insufficient for ISO 16750-2 load dump | Select when board area is critical and surge energy ≤600 W; verify thermal margin with RθJA = 110 °C/W |
| 1.5KE120A | Same electrical specs and case style; differs only in packaging - bulk vs. tape-and-reel (E3/51) | Identical performance and mounting; no design change required | Choose for manual assembly or prototyping; 1N6297A-E3/51 is preferred for automated SMT line compatibility |
Compared with SMBJ120A, the 1N6297A-E3/51 delivers 2.5× higher surge power handling and lower clamping ratio (VC/VBR = 1.33 vs. 1.63), making it suitable for harsher automotive and industrial transients; versus 1.5KE120A, it offers identical protection performance with optimized reel packaging for high-volume pick-and-place.
Availability
1N6297A-E3/51 is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC I/O protection, and telecom power adapter designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1N6297A-E3/51 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1N6297A-E3/51 belongs to Vishay's TRANSZORB® TVS family - engineered specifically for high-energy transient suppression in demanding environments where clamping speed, power density, and thermal stability are critical.
FAQ
What is the breakdown voltage tolerance for 1N6297A-E3/51?
The 1N6297A-E3/51 has a specified breakdown voltage range of 114 V to 126 V at 1 mA test current, representing a ±5.3 % tolerance around the nominal 120 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports predictable system-level surge margin analysis in designs using the 1N6297A-E3/51.
Is 1N6297A-E3/51 RoHS compliant and halogen-free?
Yes, the 1N6297A-E3/51 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards - all confirmed in Vishay document 88301.
Can 1N6297A-E3/51 be used in bidirectional configurations?
No, the 1N6297A-E3/51 is strictly unidirectional. Bidirectional variants in the same family use the "CA" suffix (e.g., 1.5KE120CA); the "A" suffix denotes unidirectional polarity with cathode band marking. Using 1N6297A-E3/51 in reverse-biased mode risks permanent junction damage due to lack of symmetric breakdown capability.
What is the maximum clamping voltage of 1N6297A-E3/51 under surge conditions?
The 1N6297A-E3/51 exhibits a maximum clamping voltage (VC) of 165 V when subjected to its rated 9.1 A peak pulse current (IPPM) under the standard 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 involving the 1N6297A-E3/51.
Does 1N6297A-E3/51 require a heatsink for continuous operation?
No heatsink is required for the 1N6297A-E3/51 under normal operating conditions because its 6.5 W steady-state power dissipation rating (PD) assumes infinite heatsink conditions, while typical PCB layout provides sufficient thermal path. With RθJL = 15.4 °C/W and standard 0.375" lead length, board-level copper pour alone maintains TJ within spec for ambient temperatures up to 105 °C - verified in Vishay's thermal derating curve (Fig. 5).
1N6297A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- 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
1N6297A-E3/51 FAQ
1.How can I place an order for 1N6297A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6297A-E3/51 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 1N6297A-E3/51 reliable?
The price and inventory of 1N6297A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6297A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6297A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6297A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6297A-E3/51?
1N6297A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6297A-E3/51 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 1N6297A-E3/51?
For technical support, including 1N6297A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6297A-E3/51 requirements.
6.How does Aetrix verify that 1N6297A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6297A-E3/51 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 1N6297A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6297A-E3/51?
All 1N6297A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6297A-E3/51, 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 1N6297A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6297A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6297A-E3/51 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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 …
