My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE68AHE3/51
- Part No.:
- 1.5KE68AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68AHE3/51.pdf
- Description:
- TVS DIODE 58.1VWM 92VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,517
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE68AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 64.6 V minimum breakdown voltage (VBR), 58.1 V maximum stand-off voltage (VWM), 92.0 V clamping voltage at 16.3 A peak pulse current (VC @ IPPM), 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5KE68AHE3/51 datasheet, 1.5KE68AHE3/51 pinout, 1.5KE68AHE3/51 application, or 1.5KE68AHE3/51 equivalent, this device serves as a robust, glass-passivated, leaded TVS solution for protecting MOSFETs, ICs, and sensor interfaces against inductive switching transients and lightning-induced surges in industrial and automotive systems.
Technical Context
This uni-directional TVS diode operates with a cathode-band polarity marking and exhibits low incremental surge resistance and sub-nanosecond response time (≤1 ns). Its clamping behavior is defined by a 92.0 V maximum clamping voltage at 16.3 A (10/1000 µs waveform), with thermal resistance of 15.4 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient).
The device supports 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), maintains ≤1.0 µA reverse leakage at VWM, and is rated for continuous power dissipation of 6.5 W on an infinite heatsink at TL = 75 °C. It uses a molded epoxy case compliant with UL 94 V-0 and matte tin-plated leads meeting J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines reliable conduction onset under transient stress |
| VWM | 58.1 V maximum - ensures no conduction during normal 56 V–58 V DC rail operation |
| VC @ IPPM | 92.0 V at 16.3 A (10/1000 µs) - limits downstream voltage to safe levels during surge events |
| PPPM | 1500 W peak pulse power - handles high-energy transients without failure |
| IFSM | 200 A peak forward surge (8.3 ms half-sine) - withstands repetitive inrush or fault currents |
| TJ max | +175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Leakage @ VWM | ≤1.0 µA - minimizes standby power loss and avoids false triggering |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, 0.210"–0.285" body diameter. RoHS-compliant, AEC-Q101 qualified (HE3 suffix), matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side (e.g., ground or return path) in uni-directional protection configuration |
| Cathode | Current exit terminal in forward bias; marked with color band | Connected to protected line (e.g., +12 V rail or signal input); conducts during reverse-transient overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS subsystems per stress-test requirements |
| Sub-1 ns response time | Clamps transients before sensitive ICs (e.g., microcontrollers, CAN transceivers) experience damaging overvoltage |
| Low incremental surge resistance | Minimizes VC overshoot and improves clamping precision across varying surge amplitudes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load-dump and alternator-switching transients. IC Role / Device Role: Primary shunt clamp placed between power rail and ground, triggered only during overvoltage events ≥64.6 V. Use Value: Limits rail voltage to ≤92.0 V during 1500 W surges, preventing damage to MCU power supplies and analog front-ends. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) and digital I/O (CAN, LIN) in factory automation sensors. IC Role / Device Role: Uni-directional TVS connected cathode-to-line, anode-to-ground to suppress ESD and inductive kickback. Use Value: Clamps fast-rising transients (<1 ns) while maintaining <1 µA leakage at 58.1 V, preserving signal integrity and accuracy. |
| Telecom Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Front-end protection of DSL or PoE-powered equipment exposed to lightning-induced surges on copper lines. IC Role / Device Role: First-stage clamping device in series with gas discharge tube (GDT) or PTC, handling bulk energy before secondary protection. Use Value: Absorbs up to 1500 W (10/1000 µs) without degradation, enabling compliance with ITU-T K.20/K.21 immunity standards. |
Use Scenario: Overvoltage safeguard on AC-DC adapter primary-side rectified DC bus (e.g., 85 V DC after bridge rectifier). IC Role / Device Role: Standoff-rated TVS (58.1 V VWM) placed across bulk capacitor to clamp switch-mode regulator turn-off spikes. Use Value: Prevents capacitor overvoltage and MOSFET avalanche failure during transient overload, extending adapter lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | DO-214AA package (SMB), 64 V VWM, 101 V VC @ 13.9 A, 600 W PPPM | Lower power rating and surface-mount format - suited for space-constrained PCBs but not direct replacement for axial-leaded 1.5KE layout | Select SMBJ64A when board space is limited and surge energy is ≤600 W; verify thermal relief and mounting compatibility. |
| 1.5KE68CA | Bi-directional variant, same VBR/VWM/VC specs, identical 1500 W rating and 1.5KE package | Protects AC-coupled or bidirectional signal lines (e.g., RS-485, audio) where polarity reversal occurs | Choose 1.5KE68CA only when protecting symmetric signals; 1.5KE68AHE3/51 remains optimal for DC rail clamping with defined polarity. |
Compared with SMBJ64A, 1.5KE68AHE3/51 delivers 2.5× higher surge power handling and axial-leaded mechanical robustness for high-vibration environments; versus 1.5KE68CA, it offers lower capacitance and simpler biasing for unidirectional DC protection - making it the preferred choice for automotive power rail and industrial DC interface applications.
Availability
1.5KE68AHE3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor modules, and telecom infrastructure requiring stable component supply, AEC-Q101 compliance, and proven 1500 W transient resilience.
Supply support for 1.5KE68AHE3/51 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through robust, standardized, and qualification-backed protection devices.
FAQ
What is the breakdown voltage range for the 1.5KE68AHE3/51?
The 1.5KE68AHE3/51 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 tight tolerance ensures predictable clamping onset across temperature and unit-to-unit variation, critical for coordinating with downstream overvoltage thresholds in automotive and industrial controllers.
Is the 1.5KE68AHE3/51 suitable for automotive applications?
Yes, the 1.5KE68AHE3/51 is AEC-Q101 qualified (per documentation note 2), confirming its reliability for automotive use including engine control units, body electronics, and ADAS power domains. Its 175 °C maximum junction temperature, glass-passivated junction, and robust surge ratings meet stringent automotive environmental and lifetime requirements.
How does the clamping voltage of the 1.5KE68AHE3/51 compare to its stand-off voltage?
The 1.5KE68AHE3/51 has a maximum stand-off voltage (VWM) of 58.1 V and a maximum clamping voltage (VC) of 92.0 V at 16.3 A. This 33.9 V differential provides sufficient margin to avoid false triggering during normal operation while limiting transient overvoltage to a safe level for downstream 75 V-rated components.
What is the peak pulse current rating for the 1.5KE68AHE3/51?
The 1.5KE68AHE3/51 is rated for 16.3 A peak pulse current (IPPM) under the standard 10/1000 µs double-exponential waveform. This value is derived directly from its 1500 W peak pulse power rating and 92.0 V clamping voltage (IPPM = PPPM/VC), and is validated per JEDEC test conditions.
Does the 1.5KE68AHE3/51 have RoHS and lead-free compliance?
Yes, the HE3 suffix in 1.5KE68AHE3/51 indicates full RoHS compliance (per EU Directive 2011/65/EU) and adherence to Vishay's material categorization standard (document 99912). The matte tin-plated leads are also qualified to JESD 201 Class 2 whisker resistance, ensuring long-term solder joint integrity.
1.5KE68AHE3/51 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE68AHE3/51 FAQ
1.How can I place an order for 1.5KE68AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68AHE3/51 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 1.5KE68AHE3/51 reliable?
The price and inventory of 1.5KE68AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE68AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68AHE3/51?
1.5KE68AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68AHE3/51 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 1.5KE68AHE3/51?
For technical support, including 1.5KE68AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68AHE3/51 requirements.
6.How does Aetrix verify that 1.5KE68AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68AHE3/51 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 1.5KE68AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE68AHE3/51?
All 1.5KE68AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68AHE3/51, 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 1.5KE68AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE68AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68AHE3/51 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
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…
