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Vishay General Semiconductor - Diodes Division 1.5KE56CAHE3/51
- Part No.:
- 1.5KE56CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE56CAHE3/51.pdf
- Description:
- TVS DIODE 47.8VWM 77VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,394
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Product details
Overview
1.5KE56CAHE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 53.2 V to 58.8 V breakdown voltage (VBR), 47.8 V stand-off voltage (VWM), 77.0 V maximum 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 automotive and industrial control systems.
For engineers reviewing the 1.5KE56CAHE3/51 datasheet, 1.5KE56CAHE3/51 pinout, 1.5KE56CAHE3/51 application, or 1.5KE56CAHE3/51 equivalent, this device is selected for robust bi-directional ESD and lightning surge suppression where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are required in harsh environments.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise clamping during transient events such as inductive switching or lightning-induced surges on DC bus or communication lines.
The device uses a DO-201AD package with axial leads, optimized for through-hole mounting and high thermal dissipation via lead conduction (RθJL = 15.4 °C/W). It supports repetitive surge duty cycles up to 0.01% and is rated for continuous operation from –55 °C to +175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V - defines reliable conduction onset under surge; ±5% tolerance ensures predictable clamping threshold |
| VWM | 47.8 V - maximum continuous working voltage before leakage exceeds 1 µA; sets safe operating margin below breakdown |
| VC @ IPPM | 77.0 V at 19.5 A - clamping voltage during 10/1000 µs transient; limits downstream voltage stress to protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability; enables protection against severe transients like ISO 7637-2 Pulse 5a |
| IPPM | 19.5 A - peak pulse current capacity; determines survivability under standardized surge waveforms |
| Junction Temp Range | –55 °C to +175 °C - supports deployment in under-hood automotive, industrial motor drives, and outdoor power electronics |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JESD47 |
Pinout & Package
Package: DO-201AD (axial-lead, molded epoxy case per JEDEC DO-201AD outline; meets UL 94 V-0 flammability rating). Matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. Bi-directional polarity: no marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional surge path | No polarity distinction; either lead serves as input/output terminal for transient energy diversion in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over time and temperature; eliminates parameter drift due to moisture or contamination |
| 1500 W peak pulse power (10/1000 µs) | Supports high-energy surge immunity per IEC 61000-4-5 Level 4 (4 kV line-to-line) without degradation |
| Clamping response time < 1 ns | Engages before sensitive semiconductor junctions experience overvoltage damage during fast-rising transients |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes VC overshoot during high-current surges, improving protection margin for 3.3 V/5 V logic and gate drivers |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Bi-directional shunt clamp placed across power rail upstream of DC/DC converter input. Use Value: Limits voltage excursion to ≤77.0 V during 1500 W surges, preventing latch-up or gate oxide rupture in downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point to suppress ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events. Use Value: Clamps transients within 1 ns while maintaining <1 µA leakage at 47.8 V, preserving signal integrity and ADC accuracy. |
| Telecom DC Power Feeds | Motor Drive Control Signal Lines |
Use Scenario: Safeguarding -48 V telecom rectifier outputs against lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Bi-directional TVS installed between power rail and chassis ground to divert common-mode surges. Use Value: Handles 10/1000 µs surges up to 19.5 A without failure, meeting Telcordia GR-1089-CORE Level 3 requirements. |
Use Scenario: Protecting isolated gate driver inputs (e.g., optocoupler or SiO2 isolator outputs) in 3-phase inverter control boards. IC Role / Device Role / Timing Role: Point-of-use clamp on PWM signal traces to suppress coupling from high-dV/dt switching nodes. Use Value: Prevents false triggering or latch-up in gate drivers by limiting coupled transients to <77.0 V with sub-nanosecond response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Lower PPPM (600 W), smaller SMB package (surface-mount), higher VC/VBR ratio (1.25 vs. 1.30) | Better suited for space-constrained PCBs; less robust for high-energy 10/1000 µs surges | Select when board area is critical and surge energy is limited to ≤600 W (e.g., secondary-side signal lines). |
| 1.5KE56C | Same electrical specs but non-AEC-Q101, commercial-grade (E3 suffix only), lower whisker test class (JESD 201 Class 1A vs. HE3's Class 2) | Approved for industrial/commercial use only; not certified for automotive under-hood deployment | Choose for cost-sensitive consumer or computing applications where automotive qualification is unnecessary. |
Compared with 1.5KE56CAHE3/51, SMBJ58CA trades surge robustness for compactness, while 1.5KE56C retains identical clamping performance but lacks automotive reliability validation - making 1.5KE56CAHE3/51 the sole choice when AEC-Q101 compliance and 1500 W capability are mandatory.
Availability
1.5KE56CAHE3/51 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom DC feed protection requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for 1.5KE56CAHE3/51 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 1.5KE series was engineered specifically for high-power transient suppression in harsh environments, emphasizing AEC-Q101 qualification, stable clamping, and ruggedized packaging for under-hood and factory-floor deployment.
FAQ
What is the breakdown voltage range of the 1.5KE56CAHE3/51?
The 1.5KE56CAHE3/51 has a specified breakdown voltage (VBR) range of 53.2 V to 58.8 V at 1.0 mA test current, measured per JEDEC standard. This ±5% tolerance ensures consistent clamping behavior across production lots and temperature extremes from –55 °C to +175 °C, directly supporting design margin calculations for protected circuits.
Is the 1.5KE56CAHE3/51 suitable for automotive applications?
Yes, the 1.5KE56CAHE3/51 is AEC-Q101 qualified (confirmed by HE3 suffix and Vishay documentation), tested for temperature cycling, high-temperature reverse bias, and surge endurance. It is approved for use in automotive powertrain, body control, and ADAS subsystems where bi-directional surge immunity and long-term reliability are mandated.
What does the "CA" suffix indicate in 1.5KE56CAHE3/51?
The "CA" suffix denotes a bi-directional configuration: the 1.5KE56CAHE3/51 provides symmetrical transient suppression in both polarities, with identical VBR, VC, and IPPM values regardless of voltage polarity. Unlike uni-directional variants (e.g., 1.5KE56A), it requires no polarity orientation during PCB placement.
What is the maximum clamping voltage of the 1.5KE56CAHE3/51 under surge conditions?
The 1.5KE56CAHE3/51 clamps to a maximum of 77.0 V at its rated peak pulse current of 19.5 A (10/1000 µs waveform). This value is guaranteed per datasheet Fig. 9 and defines the upper voltage limit imposed on protected circuitry during worst-case transients, enabling accurate overvoltage margin analysis for downstream ICs.
How does the HE3 suffix differ from E3 in Vishay TVS diodes?
The HE3 suffix on 1.5KE56CAHE3/51 indicates RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes RoHS compliance only (JESD 201 Class 1A). HE3 devices undergo additional stress testing for automotive use, including extended temperature cycling and humidity-bias life validation not required for E3-grade parts.
1.5KE56CAHE3/51 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 19.5A
- 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
1.5KE56CAHE3/51 FAQ
1.How can I place an order for 1.5KE56CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE56CAHE3/51 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 1.5KE56CAHE3/51 reliable?
The price and inventory of 1.5KE56CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE56CAHE3/51 is usually 5 days.
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1.5KE56CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE56CAHE3/51 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 1.5KE56CAHE3/51?
For technical support, including 1.5KE56CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE56CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE56CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE56CAHE3/51 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 1.5KE56CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE56CAHE3/51?
All 1.5KE56CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE56CAHE3/51, 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 1.5KE56CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE56CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE56CAHE3/51 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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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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