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Vishay General Semiconductor - Diodes Division 1.5KE56CHE3/54
- Part No.:
- 1.5KE56CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE56CHE3/54.pdf
- Description:
- TVS DIODE 45.4VWM 80.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,895
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Product details
Overview
1.5KE56CHE3/54 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, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the 1.5KE56CHE3/54 datasheet, 1.5KE56CHE3/54 pinout, 1.5KE56CHE3/54 application, or 1.5KE56CHE3/54 equivalent, this device delivers verified transient suppression for 48 V DC systems, automotive body electronics, and telecom line cards where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.37), and AEC-Q101 qualification (HE3 suffix) are critical selection criteria.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (≤1.0 µA leakage at VWM), then avalanches rapidly at VBR to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and robust surge handling across -55 °C to +175 °C operating range.
The 1.5KE56CHE3/54 uses a standardized DO-201AD package with axial leads, enabling through-hole mounting on power input stages. Its thermal resistance (RθJL = 15.4 °C/W) supports reliable power dissipation during repetitive transients when soldered to copper land patterns per JESD 22-B106 (275 °C, 10 s).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 53.2–58.8 V at 1 mA - defines precise avalanche initiation threshold for repeatable clamping behavior |
| Standoff Voltage VWM | 47.8 V max - ensures no conduction during normal 48 V rail operation, avoiding standby leakage |
| Clamping Voltage VC | 77.0 V at 19.5 A (10/1000 µs) - limits downstream voltage stress to safe levels during ESD/Lightning surges |
| Peak Pulse Power PPPM | 1500 W - sustains single 1 ms transients common in IEC 61000-4-5 Level 4 testing |
| Leakage Current ID | ≤1.0 µA at VWM - prevents power loss and false triggering in low-current sensor circuits |
| Operating Temperature | -55 °C to +175 °C - supports under-hood automotive and industrial control cabinet deployment |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive electronic modules requiring reliability certification |
Pinout & Package
Package: DO-201AD molded epoxy case with matte tin-plated axial leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability standards. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to system ground or low-side return path in unidirectional clamp configuration |
| Cathode | Current exit point; marked with color band | Connected to protected line (e.g., 48 V rail) - avalanche occurs when cathode-to-anode voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse rating | Handles IEC 61000-4-5 combination wave surges (2 Ω/12 Ω source) without degradation |
| Sub-nanosecond response time | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors |
| AEC-Q101 qualified (HE3) | Validated for automotive applications including body control modules and ADAS power domains |
| Low incremental surge resistance | Minimizes VC overshoot during high-di/dt events like inductive switch-off |
Applications
| Industrial PLC Power Input | Automotive Body Control Module |
|---|---|
Use Scenario: 48 V DC input stage of programmable logic controller exposed to load dump and relay coil flyback. IC Role / Device Role: Primary shunt TVS protecting upstream DC-DC converter ICs and microcontroller power pins. Use Value: Clamps 10/1000 µs surges to ≤77.0 V, preventing latch-up or gate oxide damage in 5 V/3.3 V regulators downstream. |
Use Scenario: 12 V/24 V supply rail in door module subjected to ISO 7637-2 pulse 5a (load dump). IC Role / Device Role: Unidirectional overvoltage clamp placed before LDOs and CAN transceivers. Use Value: AEC-Q101 qualification and 175 °C TJmax ensure compliance with automotive ambient temperature requirements. |
| Telecom Line Card Protection | Consumer Appliance Motor Drive |
Use Scenario: DC feed line of remote radio unit powered via PoE++ or centralized 48 V supply. IC Role / Device Role: First-line defense against lightning-induced surges entering via outdoor cabling. Use Value: 1500 W rating and 77.0 V clamping enable pass/fail compliance with ITU-T K.20 and GR-1089-CORE. |
Use Scenario: H-bridge gate driver supply rail in smart washing machine motor control board. IC Role / Device Role: Suppresses inductive kickback from brushed DC motor commutation. Use Value: Fast response (<1 ns) and low VC/VBR ratio prevent false triggering of overvoltage lockout in gate drivers. |
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 PPPM (600 W), smaller SMB package (surface-mount), VC = 93.6 V at 6.4 A | Suitable for space-constrained PCBs but insufficient for IEC 61000-4-5 Level 4 | Select only for lower-energy surges or secondary protection layers where footprint is critical |
| 1.5KE56A-E3/54 | Same electrical specs, commercial-grade (non-AEC-Q101), identical DO-201AD package and pinout | Lacks automotive qualification; limited to industrial/commercial environments | Choose when AEC-Q101 is not required and cost optimization is prioritized |
Compared with SMBJ58A and 1.5KE56A-E3/54, the 1.5KE56CHE3/54 uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and through-hole mechanical robustness - making it the only option among the three qualified for automotive front-end power protection where vibration resistance and high-energy transients coexist.
Availability
1.5KE56CHE3/54 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body electronics, telecom line cards, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE56CHE3/54 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in DC power systems, emphasizing rugged packaging, tight VBR tolerance, and AEC-Q101-compliant variants for automotive electronics.
FAQ
What is the clamping voltage of the 1.5KE56CHE3/54 under standard test conditions?
The 1.5KE56CHE3/54 has a maximum clamping voltage (VC) of 77.0 V at 19.5 A peak pulse current with a 10/1000 µs waveform. This value is measured per JEDEC standards and reflects the actual voltage seen by protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The 1.5KE56CHE3/54 maintains this performance across its full operating temperature range.
Is the 1.5KE56CHE3/54 suitable for automotive applications?
Yes, the 1.5KE56CHE3/54 is AEC-Q101 qualified (denoted by the HE3 suffix), making it suitable for automotive applications including body control modules, infotainment power supplies, and ADAS domain controllers. Its operating junction temperature range of -55 °C to +175 °C and validation per automotive reliability test protocols confirm suitability for under-hood and cabin-mounted electronics where thermal and vibration stresses are present.
How does the 1.5KE56CHE3/54 differ from the non-HE3 version 1.5KE56A-E3/54?
The 1.5KE56CHE3/54 differs from 1.5KE56A-E3/54 solely in qualification status: the HE3 suffix indicates full AEC-Q101 compliance, including stress testing for temperature cycling, humidity bias, and high-temperature operating life. Electrically and physically, both share identical VBR, VC, package (DO-201AD), and pinout. The 1.5KE56CHE3/54 is required for automotive production; the 1.5KE56A-E3/54 serves commercial/industrial use cases.
What is the standoff voltage rating for the 1.5KE56CHE3/54?
The 1.5KE56CHE3/54 has a maximum working peak reverse voltage (VWM) of 47.8 V, meaning it remains non-conductive under continuous 48 V DC nominal rail conditions. This allows safe integration into 48 V systems such as telecom power feeds and industrial automation controllers without leakage-induced power loss or false triggering - confirmed by ≤1.0 µA reverse leakage at VWM.
Does the 1.5KE56CHE3/54 require heatsinking for standard operation?
No external heatsink is required for single-pulse operation, as the 1.5KE56CHE3/54 dissipates energy transiently. Its thermal resistance from junction to lead (RθJL) is 15.4 °C/W, and typical PCB copper land patterns provide sufficient heat spreading. For repetitive surges, derating per Figure 2 in the Vishay datasheet (Document 88301) applies - but standard 1.5KE56CHE3/54 deployment in power input stages relies on inherent package thermal mass and board layout, not added heatsinks.
1.5KE56CHE3/54 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:
- 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
1.5KE56CHE3/54 FAQ
1.How can I place an order for 1.5KE56CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE56CHE3/54 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 1.5KE56CHE3/54 reliable?
The price and inventory of 1.5KE56CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE56CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE56CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE56CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE56CHE3/54?
1.5KE56CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE56CHE3/54 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 1.5KE56CHE3/54?
For technical support, including 1.5KE56CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE56CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE56CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE56CHE3/54 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 1.5KE56CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE56CHE3/54?
All 1.5KE56CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE56CHE3/54, 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 1.5KE56CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE56CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE56CHE3/54 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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