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Vishay General Semiconductor - Diodes Division 1.5KE56CHE3/73
- Part No.:
- 1.5KE56CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE56CHE3/73.pdf
- Description:
- TVS DIODE 45.4VWM 80.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,331
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Product details
Overview
1.5KE56CHE3/73 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 53.2 V to 58.8 V breakdown voltage (VBR) at 1 mA, 47.8 V maximum standoff voltage (VWM), 77.0 V clamping voltage (VC) at 19.5 A peak pulse current, 1500 W peak pulse power rating with 10/1000 µs waveform, and operates across -55 °C to +175 °C junction temperature range. It is used to protect MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in industrial power supplies.
For engineers reviewing the 1.5KE56CHE3/73 datasheet, 1.5KE56CHE3/73 pinout, 1.5KE56CHE3/73 application, or 1.5KE56CHE3/73 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under standardized surge waveforms, RoHS-compliant packaging details, and AEC-Q101 qualification status where applicable - all specific to the 1.5KE56CHE3/73 variant.
Technical Context
This device employs 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-going surges, with a 3.5 V forward voltage (VF) at 100 A, confirming suitability for high-current surge suppression without forward conduction loss penalties.
The 1.5KE56CHE3/73 adheres to JEDEC case style 1.5KE, uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability requirements. The "HE3" suffix denotes RoHS compliance and AEC-Q101 qualification per revision B, validated for automotive-grade reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1 mA - defines precise voltage threshold at which clamping initiates under controlled test conditions |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 77.0 V at 19.5 A - clamped voltage during 10/1000 µs surge, directly limiting downstream component stress |
| PPPM | 1500 W - peak pulse power handling capability, enabling robust protection against lightning-induced or inductive-switching transients |
| TJ max. | +175 °C - high-temperature junction rating supports operation in under-hood automotive or industrial power-conversion environments |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), validating short-circuit withstand capability |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, informing heatsinking requirements for sustained power dissipation |
Pinout & Package
Package: JEDEC case style 1.5KE - molded epoxy body with axial leads, UL 94 V-0 rated, matte tin-plated terminals solderable per J-STD-002. Cathode identified by color band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected circuit; enables clamping only on positive transients relative to cathode |
| Cathode | Current exit point during forward conduction; marked with band | Connected to higher-potential rail (e.g., VCC); defines reference for unidirectional clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-line) without degradation when properly mounted |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units and body electronics requiring zero defect field performance |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V or 5 V logic |
| Solder dip 275 °C max. (10 s) | Enables compatibility with lead-free reflow and wave soldering processes without parametric shift or delamination |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against back-EMF spikes from brushed DC motor commutation. IC Role / Device Role: Unidirectional TVS placed between motor driver output and ground to clamp positive transients. Use Value: Limits voltage excursion to ≤77.0 V during 19.5 A surges, preventing latch-up or oxide rupture in 60 V-rated MOSFETs and 5 V MCU GPIOs. |
Use Scenario: Safeguarding LIN bus transceivers and door module sensors from load dump and jump-start transients. IC Role / Device Role: Primary clamping device on 12 V supply rail upstream of LDO regulators. Use Value: Withstands 200 A non-repetitive forward surge and clamps to 77.0 V, maintaining regulator input within safe operating area during ISO 7637-2 Pulse 5a events. |
| Telecom Power Feeds | Consumer AC-DC Adapters |
Use Scenario: Overvoltage protection on -48 V DC telecom distribution lines exposed to lightning-induced surges. IC Role / Device Role: Unidirectional TVS connected cathode-to-rail to suppress positive polarity transients on negative-ground systems. Use Value: 47.8 V VWM ensures no leakage during nominal -48 V operation; 77.0 V VC prevents damage to downstream DC-DC converters rated for 100 V input. |
Use Scenario: Secondary-side transient suppression on 5 V/12 V outputs of wall adapters subject to ESD and capacitive coupling noise. IC Role / Device Role: Low-capacitance TVS placed across output terminals to shunt fast transients before reaching USB ports or display interfaces. Use Value: Sub-1 ns response time captures ESD events before propagation; 1500 W rating handles multiple contact discharge events without parametric drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | Lower peak pulse power (600 W), smaller SMB package (vs. axial 1.5KE), 58.0 V VBR min | Preferred for space-constrained PCB layouts; unsuitable for >100 A surge events due to lower IPPM | Select SMBJ58A when board area is critical and surge energy is limited to IEC 61000-4-5 Level 2 (1 kV) |
| 1.5KE56A | Same electrical specs but E3 suffix only (RoHS commercial grade, not AEC-Q101 qualified) | Lacks automotive qualification; acceptable for industrial/commercial power supplies without automotive lifecycle requirements | Choose 1.5KE56A for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with 1.5KE56CHE3/73, SMBJ58A trades surge robustness for compactness, while 1.5KE56A retains identical clamping performance but omits automotive qualification - making the HE3/73 variant essential for Tier-1 automotive sourcing with traceable AEC-Q101 compliance.
Availability
1.5KE56CHE3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer AC-DC adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE56CHE3/73 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, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting applications demanding 1500 W surge capability, AEC-Q101 validation, and stable parametric performance across extended temperature ranges.
FAQ
What is the breakdown voltage range of the 1.5KE56CHE3/73?
The 1.5KE56CHE3/73 has a guaranteed breakdown voltage (VBR) range of 53.2 V to 58.8 V measured at 1 mA test current, per Vishay's 88301 datasheet revision 09-Aug-2022. This tolerance ensures consistent clamping initiation across production lots and supports reliable design margins for 48 V system protection. The 1.5KE56CHE3/73 maintains this specification under TA = 25 °C and conforms to JEDEC standards for transient suppressor diodes.
Is the 1.5KE56CHE3/73 AEC-Q101 qualified?
Yes, the 1.5KE56CHE3/73 is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's 88301 datasheet (note 2 on page 3). This qualification covers temperature cycling, mechanical shock, and surge endurance testing required for automotive electronics. The 1.5KE56CHE3/73 is approved for use in body control modules and powertrain peripherals where zero-defect reliability is mandatory.
What is the clamping voltage of the 1.5KE56CHE3/73 at its rated peak pulse current?
The 1.5KE56CHE3/73 clamps to a maximum of 77.0 V at its rated peak pulse current (IPPM) of 19.5 A under a 10/1000 µs waveform, as specified in the Electrical Characteristics table. This value represents the upper limit of voltage seen by downstream components during worst-case surge events and is critical for verifying safe operating area compliance of protected ICs and MOSFETs. The 1.5KE56CHE3/73 achieves this with low incremental resistance, minimizing overshoot.
Does the 1.5KE56CHE3/73 have bidirectional capability?
No, the 1.5KE56CHE3/73 is a unidirectional TVS diode, indicated by the absence of "CA" in its part number. Bidirectional variants (e.g., 1.5KE56CA) exist in the same family but are electrically distinct. The 1.5KE56CHE3/73 conducts only during positive voltage excursions relative to its cathode and must be oriented with the banded end toward the higher-potential node. Using it in reverse polarity will not provide clamping.
What packaging and plating does the 1.5KE56CHE3/73 use?
The 1.5KE56CHE3/73 uses JEDEC case style 1.5KE - an axial-leaded, molded epoxy package rated UL 94 V-0. Its leads are matte tin plated and compliant with J-STD-002 and JESD 22-B102 for solderability. The "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification, while the "/73" denotes tape-and-reel packaging (1400 pcs per reel, 13-inch diameter). This construction supports automated assembly and high-reliability field operation.
1.5KE56CHE3/73 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 45.4V
- Voltage - Breakdown (Min):
- 50.4V
- Voltage - Clamping (Max) @ Ipp:
- 80.5V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- 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
1.5KE56CHE3/73 FAQ
1.How can I place an order for 1.5KE56CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE56CHE3/73 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 1.5KE56CHE3/73 reliable?
The price and inventory of 1.5KE56CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE56CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE56CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE56CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE56CHE3/73?
1.5KE56CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE56CHE3/73 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 1.5KE56CHE3/73?
For technical support, including 1.5KE56CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE56CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE56CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE56CHE3/73 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 1.5KE56CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE56CHE3/73?
All 1.5KE56CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE56CHE3/73, 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 1.5KE56CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE56CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE56CHE3/73 Tags
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