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Vishay General Semiconductor - Diodes Division 1.5KE75CAHE3_B/C
- Part No.:
- 1.5KE75CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75CAHE3_B/C.pdf
- Description:
- 1.5KW,75V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,600
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Product details
Overview
1.5KE75CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 71.3 V to 78.8 V breakdown voltage (VBR), 64.1 V standoff voltage (VWM), 104 V clamping voltage at 14.6 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the 1.5KE75CAHE3_B/C datasheet, 1.5KE75CAHE3_B/C pinout, 1.5KE75CAHE3_B/C application, or 1.5KE75CAHE3_B/C equivalent, this part delivers verified bidirectional clamping performance, AEC-Q101 qualification, RoHS-compliant HE3 packaging, and validated thermal resistance (RθJL = 15.4 °C/W) for robust transient suppression in harsh environments.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, critical for consistent clamping under repetitive transients.
Designed for 10/1000 µs surge waveforms, it sustains 1500 W peak pulse power at TA = 25 °C and derates linearly above 25 °C per Fig. 2, with maximum junction temperature rated at +175 °C and thermal resistance from junction to lead at 15.4 °C/W - supporting reliable operation on PCBs with moderate copper pour.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V - defines guaranteed conduction onset range under 1 mA test current; ensures predictable turn-on before downstream component damage. |
| VWM | 64.1 V - maximum continuous reverse operating voltage; allows safe integration into 48 V or 60 V nominal systems with margin. |
| VC @ IPPM | 104 V - clamping voltage at 14.6 A peak pulse; limits transient overvoltage seen by protected ICs to ≤104 V during 10/1000 µs surges. |
| PPPM | 1500 W - peak pulse power rating for 10/1000 µs waveform; supports protection against lightning-induced surges per IEC 61000-4-5 Level 4. |
| IPPM | 14.6 A - peak pulse current corresponding to VC = 104 V; determines minimum trace width and fuse coordination requirements. |
| TJ max. | +175 °C - maximum junction temperature; enables use in under-hood automotive or high-ambient industrial enclosures. |
| RθJL | 15.4 °C/W - junction-to-lead thermal resistance; confirms effective heat transfer to PCB pads or heatsinked leads without forced cooling. |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, compliant with J-STD-002 and JESD 22-B102 solderability standards. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Reversible surge current path | Both terminals function identically; no cathode band marking required - simplifies layout for AC or differential line protection. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR drift <0.1 %/°C and long-term reliability under thermal cycling in automotive-grade applications. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics per stress test requirements including HTRB, HTGB, and temperature cycling - suitable for engine control units and ADAS sensors. |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment and telecom infrastructure up to Level 4 (4 kV line-to-line). |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage stress on protected devices - critical for 3.3 V or 5 V logic interfaces sharing same supply rail as protected circuitry. |
| JESD 201 Class 2 whisker resistance (HE3) | Prevents tin whisker growth under high humidity and temperature bias, ensuring long-term solder joint integrity in sealed automotive modules. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input pins to clamp surges before DC-DC regulators and microcontrollers. Use Value: Withstands 1500 W pulses and operates up to +175 °C, meeting ISO 7637-2 Pulse 5a requirements without derating. |
Use Scenario: Shielding 4–20 mA current loop transmitters from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Placed differentially across signal lines to suppress common-mode transients while preserving analog accuracy. Use Value: Symmetrical clamping ensures equal protection on both signal wires, maintaining loop balance and avoiding offset errors. |
| Telecom DSL Line Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Guarding ADSL/VDSL line interface ICs against lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: First-stage protector in hybrid protection circuits, shunting energy before gas discharge tubes or PTCs. Use Value: 104 V clamping voltage limits stress on downstream silicon, enabling use with 100 V-rated line drivers. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb inductive kickback before reaching MCU GPIO or driver ICs. Use Value: Fast response time (<1 ns) prevents latch-up in motor control ICs; bidirectional capability accommodates reversal during braking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower peak pulse power (600 W), smaller SMB package (vs. DO-201AB), higher RθJA (90 °C/W). | Better suited for space-constrained consumer electronics; insufficient for automotive load dump per ISO 7637-2. | Select when board area is limited and surge energy is ≤600 W; verify thermal margin with PCB copper. |
| 1.5KE75CAHE3_A | Same electrical specs and package, but HE3_A revision lacks AEC-Q101 qualification (HE3_B/C is qualified). | Acceptable for commercial industrial use; not approved for automotive safety-critical modules requiring AEC-Q101 evidence. | Choose 1.5KE75CAHE3_B/C for automotive OEM programs; use HE3_A only where qualification documentation is not required. |
Compared with SMBJ75CA, 1.5KE75CAHE3_B/C delivers 2.5× higher surge power handling and proven automotive qualification; versus 1.5KE75CAHE3_A, it adds documented AEC-Q101 compliance - essential for Tier 1 automotive BOMs requiring audit-ready qualification records.
Availability
1.5KE75CAHE3_B/C is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, telecom DSL line safeguarding, and consumer appliance motor drive suppression requiring stable component supply and full traceability.
Supply support for 1.5KE75CAHE3_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, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in demanding environments - emphasizing rugged packaging, AEC-Q101 qualification, and precise clamping performance across wide temperature ranges.
FAQ
What is the clamping voltage of the 1.5KE75CAHE3_B/C under a 10/1000 µs surge?
The 1.5KE75CAHE3_B/C clamps to a maximum of 104 V at its rated peak pulse current of 14.6 A under a 10/1000 µs waveform. This value is measured per JEDEC standard test conditions and reflects worst-case voltage seen by protected circuitry during surge events - critical for validating voltage margins of downstream ICs.
Is the 1.5KE75CAHE3_B/C suitable for automotive applications?
Yes, the 1.5KE75CAHE3_B/C carries the HE3 suffix, confirming AEC-Q101 qualification per Vishay's documentation (Document 88301, Note 2). It is approved for use in automotive powertrain, body control, and ADAS modules where transient immunity and high-temperature operation up to +175 °C are required.
How does the bidirectional design of the 1.5KE75CAHE3_B/C affect PCB layout?
The 1.5KE75CAHE3_B/C has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies layout for AC-coupled lines, differential buses (e.g., RS-485), or any application where voltage polarity may reverse - reducing assembly errors and enabling symmetric routing.
What is the standoff voltage (VWM) of the 1.5KE75CAHE3_B/C, and why does it matter?
The 1.5KE75CAHE3_B/C has a maximum standoff voltage (VWM) of 64.1 V, meaning it remains non-conductive below this DC or RMS voltage. This parameter ensures compatibility with 48 V and 60 V nominal systems while providing sufficient margin above normal operating voltage to prevent leakage or false triggering during steady-state operation.
Does the 1.5KE75CAHE3_B/C require a heatsink for standard operation?
No external heatsink is required for standard 1500 W pulse operation at TA = 25 °C, as its RθJL of 15.4 °C/W allows adequate heat dissipation through PCB copper and lead frames. However, sustained repetitive surges or ambient temperatures above 75 °C necessitate thermal evaluation using the derating curve in Figure 2 of the datasheet.
1.5KE75CAHE3_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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 15A
- 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
1.5KE75CAHE3_B/C FAQ
1.How can I place an order for 1.5KE75CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75CAHE3_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 1.5KE75CAHE3_B/C reliable?
The price and inventory of 1.5KE75CAHE3_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 1.5KE75CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE75CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75CAHE3_B/C?
1.5KE75CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75CAHE3_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 1.5KE75CAHE3_B/C?
For technical support, including 1.5KE75CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE75CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE75CAHE3_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 1.5KE75CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE75CAHE3_B/C?
All 1.5KE75CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75CAHE3_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 1.5KE75CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE75CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75CAHE3_B/C Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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