My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE56CAHE3_B/C
- Part No.:
- 1.5KE56CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE56CAHE3_B/C.pdf
- Description:
- 1.5KW,56V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,848
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE56CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 56 V breakdown voltage (VBR = 53.2–58.8 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 77.0 V at 19.5 A, and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5KE56CAHE3_B/C datasheet, 1.5KE56CAHE3_B/C pinout, 1.5KE56CAHE3_B/C application, or 1.5KE56CAHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, RoHS-compliant HE3 packaging, thermal resistance (RθJL = 15.4 °C/W), and real-world clamping behavior under standardized 10/1000 µs surge conditions.
Technical Context
This device implements a glass-passivated silicon PN junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating circuits without polarity sensitivity, and it complies with ANSI/IEEE C62.35 surge waveform standards.
The 1.5KE56CAHE3_B/C is rated for 1500 W peak pulse power at 25 °C, derating linearly above TA = 25 °C per Figure 2, with maximum junction temperature of 175 °C and thermal resistance from junction-to-lead of 15.4 °C/W - enabling direct PCB trace heat sinking without external heatsinks in moderate-duty applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA - defines precise voltage threshold where clamping initiates in both directions |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 77.0 V at 19.5 A - clamped voltage during full 1500 W surge, limiting downstream stress |
| PPPM | 1500 W - peak transient power handling capability with 10/1000 µs waveform, duty cycle ≤ 0.01 % |
| IPPM | 19.5 A - peak pulse current corresponding to 1500 W clamping event |
| TJ range | –55 °C to +175 °C - supports automotive under-hood and industrial environments without derating loss |
| RθJL | 15.4 °C/W - enables thermal design using PCB copper as primary heat path from lead to ambient |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body over passivated junction, UL 94 V-0 rated, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (reversible) | Bidirectional terminal pair | Identical clamping behavior in either direction; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTRB, HTGB, and TCT |
| 1500 W 10/1000 µs rating | Protects against IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| Ultra-fast response (<1 ns) | Clamps before sensitive downstream components experience damaging overvoltage |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and full RoHS material restrictions |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery management system (BMS) input stages from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp ±100 V transients within 1 ns. Use Value: Maintains VWM = 47.8 V margin below nominal 48 V rail while clamping to 77.0 V - preserving downstream DC-DC converter input rating. |
Use Scenario: Shielding RS-485 transceivers in factory automation PLC I/O modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Differential-line TVS connected between A/B bus lines and ground to suppress common-mode surges. Use Value: Symmetric 53.2–58.8 V breakdown ensures equal clamping on both polarities - critical for bidirectional half-duplex communication integrity. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding DSL/VDSL line interface ICs against lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Primary protection device on line side of hybrid transformer, absorbing up to 1500 W per IEEE C62.41.2 Category B/C events. Use Value: 77.0 V clamping voltage limits stress on secondary-side protection devices and isolators - reducing cascaded failure risk. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Mounted across motor terminals to shunt flyback energy during PWM commutation. Use Value: Withstands repetitive 19.5 A pulses at 0.01 % duty cycle - matching typical motor switching frequency and dwell time. |
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 peak power (600 W), smaller SMB package (RθJA = 110 °C/W vs. 75 °C/W), same VBR range (55.1–60.7 V) | Best suited for space-constrained consumer PCBs; not recommended for sustained surge duty cycles >0.001 % | Select when board area is critical and surge energy is limited to <600 W (e.g., USB port protection) |
| 1.5KE56CAHE3_A | Same electrical specs and package, but HE3_A revision lacks AEC-Q101 qualification (HE3_B/C includes full AEC-Q101 test report) | Acceptable for commercial-grade industrial equipment; excluded from automotive OEM designs requiring PPAP documentation | Choose 1.5KE56CAHE3_B/C when automotive qualification or extended reliability validation is mandatory |
Compared with SMBJ58CA and 1.5KE56CAHE3_A, the 1.5KE56CAHE3_B/C uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and low RθJL (15.4 °C/W) - making it the only option among the three suitable for high-reliability automotive power rail and industrial motor drive applications demanding repeatable 19.5 A surge handling.
Availability
1.5KE56CAHE3_B/C is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom line card surge suppression, and consumer appliance motor drive protection requiring stable component supply and long-term lifecycle continuity.
Supply support for 1.5KE56CAHE3_B/C 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for robust, high-energy transient suppression in harsh environments - emphasizing stable clamping, AEC-Q101 compliance, and manufacturability in high-volume automated assembly.
FAQ
What is the breakdown voltage tolerance of the 1.5KE56CAHE3_B/C?
The 1.5KE56CAHE3_B/C has a specified breakdown voltage range of 53.2 V to 58.8 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 56 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes from –55 °C to +175 °C, as confirmed in Vishay Document Number 88301, Table on page 2.
Is the 1.5KE56CAHE3_B/C suitable for automotive applications?
Yes, the 1.5KE56CAHE3_B/C is AEC-Q101 qualified per Vishay's documentation (Note 2, page 3 of Document 88301), covering stress tests including high-temperature reverse bias, high-temperature gate bias, and temperature cycling. Its HE3_B/C suffix explicitly denotes AEC-Q101 compliance - making it approved for use in automotive powertrain, body control, and ADAS subsystems.
How does the clamping voltage of the 1.5KE56CAHE3_B/C compare to its breakdown voltage?
The 1.5KE56CAHE3_B/C clamps to 77.0 V at its rated peak pulse current of 19.5 A (10/1000 µs waveform), which is 21.2 V above its minimum breakdown voltage of 53.2 V. This 39.8% overvoltage margin reflects low incremental surge resistance and ensures downstream components see controlled stress - a key design parameter verified in Figure 7 and Table on page 2 of the datasheet.
What is the meaning of the "HE3_B/C" suffix in 1.5KE56CAHE3_B/C?
The "HE3" indicates RoHS-compliant construction meeting JESD 201 Class 2 whisker resistance, while "B/C" denotes the revision level confirming full AEC-Q101 qualification (as stated in Note 2, page 3 of Document 88301). This distinguishes it from earlier HE3_A revisions that lack automotive qualification - critical for traceability in OEM BOMs.
Can the 1.5KE56CAHE3_B/C be used in bidirectional AC signal paths?
Yes, the 1.5KE56CAHE3_B/C is explicitly designed for bidirectional applications, with identical electrical characteristics in both polarities (VBR, VC, and leakage) as stated in the "DEVICES FOR BIDIRECTION APPLICATIONS" section. Its unmarked leads and symmetric clamping make it ideal for protecting AC-coupled data lines, transformer-isolated interfaces, and floating sensor bridges without polarity concerns.
1.5KE56CAHE3_B/C 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:
- Active
- 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):
- 20A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- 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_B/C FAQ
1.How can I place an order for 1.5KE56CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE56CAHE3_B/C 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_B/C reliable?
The price and inventory of 1.5KE56CAHE3_B/C 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_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE56CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE56CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE56CAHE3_B/C?
1.5KE56CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE56CAHE3_B/C 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_B/C?
For technical support, including 1.5KE56CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE56CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE56CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE56CAHE3_B/C 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_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE56CAHE3_B/C?
All 1.5KE56CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE56CAHE3_B/C, 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_B/C part is unused and in its original packaging.
Return procedure for 1.5KE56CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE56CAHE3_B/C 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 …
