My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE68HE3/73
- Part No.:
- 1.5KE68HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE68HE3/73.pdf
- Description:
- TVS DIODE 55.1VWM 98VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,828
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE68HE3/73 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 64.6 V to 71.4 V breakdown voltage (VBR), 58.1 V maximum standoff voltage (VWM), 92.0 V clamping voltage 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 1.5KE68HE3/73 datasheet, 1.5KE68HE3/73 pinout, 1.5KE68HE3/73 application, or 1.5KE68HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), JEDEC 1.5KE package dimensions, and direct replacement guidance for high-reliability transient suppression design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast clamping response (<1 ns) and low incremental surge resistance. Its 1500 W peak pulse power handling is specified under standardized 10/1000 µs waveform conditions with 0.01% duty cycle, and it maintains stable clamping performance up to 175 °C junction temperature.
The device complies with JESD 201 Class 2 whisker testing (via HE3 suffix), supports soldering at 275 °C for 10 s (JESD 22-B106), and meets UL 94 V-0 flammability requirements via its molded epoxy case - confirming suitability for automotive-grade PCB assemblies requiring long-term reliability under thermal cycling and mechanical stress.
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 compatible with 48 V nominal systems |
| VC @ IPPM | 92.0 V - clamping voltage limits downstream IC stress during 16.3 A transient events |
| PPPM | 1500 W - handles lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) without degradation |
| IPPM | 16.3 A - peak pulse current capacity defined at 10/1000 µs waveform |
| TJ max. | +175 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports sustained surge dissipation without heatsinking |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - axial-lead, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, 0.210"–0.285" body diameter. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or lowest potential node in unidirectional clamp configuration |
| Cathode (banded end) | High-side transient input terminal | Placed in series with protected line; conducts avalanche current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power domains |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage stability under humidity and thermal stress |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity compliance without derating in compact layouts |
| Clamping response time < 1 ns | Protects sub-ns-sensitive logic and analog front-ends before damage occurs |
| JESD 201 Class 2 whisker resistance | Eliminates tin whisker risk in high-reliability automotive and industrial deployments |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role: Primary shunt protector placed between power rail and ground, upstream of DC/DC converters. Use Value: Clamps transients to ≤92.0 V, preventing MOSFET gate oxide rupture and MCU brownout in critical control modules. | Use Scenario: 4–20 mA current loop interfaces in PLC analog I/O modules subjected to ESD and field wiring surges. IC Role / Device Role: Unidirectional TVS placed across signal and return lines to suppress common-mode transients. Use Value: Limits induced voltage excursions to safe levels for precision op-amps and ADC inputs without affecting loop accuracy. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: -48 V telecom rectifier outputs feeding base station backplanes vulnerable to lightning-induced surges on long cable runs. IC Role / Device Role: Standoff-rated TVS on main DC bus, coordinated with upstream fuses and secondary MOVs. Use Value: Provides precise 58.1 V hold-off and rapid 92.0 V clamping to preserve PoE controller ICs and Ethernet PHYs. | Use Scenario: AC/DC power supply outputs driving BLDC motor controllers in smart home appliances. IC Role / Device Role: Final-stage transient guard on low-voltage DC bus before gate drivers and microcontrollers. Use Value: Absorbs commutation spikes and ESD events without degrading efficiency or causing latch-up in embedded motor ICs. |
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, VBR = 71.1–78.8 V, VC = 103 V @ 5.8 A | Better suited for space-constrained consumer PCBs; not AEC-Q101 qualified | Select when board area is limited and automotive qualification is unnecessary |
| 1.5KE68A-E3/54 | Same electrical specs and 1.5KE package, but commercial-grade (non-AEC-Q101), RoHS-compliant E3 suffix only | Lacks automotive qualification; suitable for industrial/commercial power supplies where extended temperature validation is not required | Choose for cost-sensitive non-automotive designs needing identical form-factor and clamping behavior |
Compared with 1.5KE68HE3/73, SMBJ64A offers reduced footprint and cost but sacrifices 60% pulse power headroom and automotive qualification; 1.5KE68A-E3/54 matches all electrical and mechanical attributes but omits AEC-Q101 validation - making it appropriate only for non-automotive use cases requiring identical layout compatibility.
Availability
1.5KE68HE3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply, long-lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for 1.5KE68HE3/73 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 and ruggedized performance.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising long-term parametric stability.
FAQ
What is the breakdown voltage range of the 1.5KE68HE3/73?
The 1.5KE68HE3/73 has a guaranteed breakdown voltage (VBR) range of 64.6 V to 71.4 V at 1.0 mA test current, measured per JEDEC standards. This tight tolerance ensures consistent turn-on behavior across production lots and supports robust design margins against overvoltage events in 48 V and 24 V systems. The 1.5KE68HE3/73 maintains this specification under full temperature range (–55 °C to +175 °C) and after repeated surge exposure.
Is the 1.5KE68HE3/73 qualified for automotive applications?
Yes, the 1.5KE68HE3/73 is AEC-Q101 qualified, as confirmed by Vishay's documentation for the HE3 suffix variant (1.5KE6.8AHE3_B to 1.5KE220AHE3_B). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its use in engine control, body electronics, and ADAS subsystems. The 1.5KE68HE3/73 carries the HE3 suffix denoting both RoHS compliance and AEC-Q101 qualification.
What is the clamping voltage of the 1.5KE68HE3/73 at its rated peak pulse current?
The 1.5KE68HE3/73 exhibits a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 16.3 A, tested with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring downstream components like microcontrollers and gate drivers remain within absolute maximum ratings. The 1.5KE68HE3/73 achieves this with low incremental surge resistance and minimal voltage overshoot.
Does the 1.5KE68HE3/73 have a bidirectional version?
No, the 1.5KE68HE3/73 is a unidirectional TVS diode. Bidirectional variants exist in the same family (e.g., 1.5KE68CA), but they are distinct part numbers with different marking, polarity, and electrical behavior. The "HE3/73" suffix applies exclusively to unidirectional AEC-Q101-qualified parts; no bidirectional version carries the HE3/73 designation. For bidirectional protection, engineers must select explicitly marked CA-suffix parts such as 1.5KE68CAHE3_B.
What package type does the 1.5KE68HE3/73 use, and what are its key mechanical properties?
The 1.5KE68HE3/73 uses the standard JEDEC Case Style 1.5KE - an axial-leaded, molded epoxy package with UL 94 V-0 flammability rating. Key mechanical properties include 0.375" (9.5 mm) lead length, 0.210"–0.285" body diameter, matte tin-plated leads compliant with J-STD-002, and JESD 201 Class 2 whisker resistance. Its RθJL of 15.4 °C/W enables effective heat transfer to PCB copper without external heatsinking.
1.5KE68HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 55.1V
- Voltage - Breakdown (Min):
- 61.2V
- Voltage - Clamping (Max) @ Ipp:
- 98V
- Current - Peak Pulse (10/1000µs):
- 15.3A
- 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
1.5KE68HE3/73 FAQ
1.How can I place an order for 1.5KE68HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE68HE3/73 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 1.5KE68HE3/73 reliable?
The price and inventory of 1.5KE68HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE68HE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE68HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE68HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE68HE3/73?
1.5KE68HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE68HE3/73 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 1.5KE68HE3/73?
For technical support, including 1.5KE68HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE68HE3/73 requirements.
6.How does Aetrix verify that 1.5KE68HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE68HE3/73 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 1.5KE68HE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE68HE3/73?
All 1.5KE68HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE68HE3/73, 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 1.5KE68HE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE68HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE68HE3/73 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 …
