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Vishay General Semiconductor - Diodes Division 1.5KE75CAHE3/51
- Part No.:
- 1.5KE75CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75CAHE3/51.pdf
- Description:
- TVS DIODE 64.1VWM 104VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,507
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Product details
Overview
1.5KE75CAHE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 71.3 V to 78.8 V breakdown voltage (VBR) at 1 mA, 64.1 V maximum stand-off voltage (VWM), 104 V clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the 1.5KE75CAHE3/51 datasheet, 1.5KE75CAHE3/51 pinout, 1.5KE75CAHE3/51 application, or 1.5KE75CAHE3/51 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), JEDEC 1.5KE package dimensions, and real-world clamping behavior under transient stress.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, enabling single-device protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, critical for consistent clamping across repetitive transients.
The device complies with AEC-Q101 for automotive-grade reliability and supports soldering per JESD 22-B106 (275 °C, 10 s). With a 175 °C maximum junction temperature and UL 94 V-0 molded epoxy case, it sustains operation in harsh thermal and flammability environments typical of engine control units and base station power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at 1 mA - defines reliable conduction onset threshold for bidirectional surge clamping |
| VWM | 64.1 V - maximum continuous reverse voltage before leakage exceeds 1 μA, ensuring no false triggering |
| VC @ IPPM | 104 V at 14.6 A - clamped voltage during 1500 W transient, limiting downstream IC stress to safe levels |
| PPPM | 1500 W (10/1000 µs) - peak power handling capacity for lightning-induced surges per IEC 61000-4-5 |
| TJ max. | +175 °C - enables placement near high-power components without derating concerns |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports sustained power dissipation without heatsinking |
| AEC-Q101 | Qualified - validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
Pinout & Package
Package: JEDEC Case Style 1.5KE - axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bi-directional terminals | No polarity marking; symmetrical conduction allows installation without orientation check in AC or floating circuits |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures ±5% VBR tolerance and long-term stability under thermal cycling and humidity stress |
| 1500 W peak pulse power | Withstands 10/1000 µs transients up to 14.6 A - meets IEC 61000-4-5 Level 4 (4 kV) requirements |
| Sub-nanosecond response time | <1 ns clamping activation - protects sensitive MOSFET gates and ADC inputs before damage occurs |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HAST, and mechanical shock per AEC standard |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance - suitable for high-reliability solder joints in automotive PCBs |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., oxygen, pressure) from load dump and ESD events in engine compartments. IC Role / Device Role: Bi-directional clamping element placed across differential signal pairs or supply rails. Use Value: Limits transient voltage to ≤104 V while sustaining 1500 W pulses - prevents latch-up and gate oxide rupture in 5 V/3.3 V interface ICs. |
Use Scenario: Shielding 24 V digital input modules from inductive kickback caused by solenoid/relay switching in factory automation cabinets. IC Role / Device Role: Primary overvoltage clamp on field-side terminals before optocoupler isolation stage. Use Value: Clamps 1 kV/500 A surge (IEC 61000-4-5) to safe levels within 1 ns - eliminates need for additional RC snubbers or MOVs. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Surge protection on POTS or DSL line interfaces exposed to lightning-induced longitudinal surges on outdoor copper pairs. IC Role / Device Role: First-stage protector in hybrid transformer-coupled front-end, shunting common-mode energy to ground. Use Value: Symmetrical 75 V VWM and 104 V VC ensure compatibility with -48 V DC bias and AC ringing signals without forward conduction. |
Use Scenario: Secondary-side transient suppression on 12 V/24 V DC outputs of industrial SMPS units feeding motor drives and controllers. IC Role / Device Role: Output rail clamp preventing back-fed transients from damaging downstream regulators or microcontrollers. Use Value: 175 °C TJ max and 15.4 °C/W RθJL allow direct mounting on PCB near output filter caps - no thermal pad required. |
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 | DO-214AA package (SMB), lower PPPM = 600 W, VC = 121 V @ 4.9 A | Surface-mount only; unsuitable for through-hole legacy designs or high-current chassis grounding | Select when board space is constrained and peak surge energy is ≤600 W |
| 1.5KE75CA | Same 1.5KE package and electrical specs, but commercial-grade (E3 suffix), not AEC-Q101 qualified | Lacks automotive qualification testing - not approved for safety-critical vehicle subsystems | Choose for cost-sensitive industrial or consumer applications where AEC-Q101 is not mandated |
Compared with 1.5KE75CAHE3/51, SMBJ75CA trades higher mounting density for reduced surge capacity and no AEC-Q101 validation, while 1.5KE75CA retains identical form/fit/function but omits automotive reliability assurance - making 1.5KE75CAHE3/51 the sole choice for production automotive electronics requiring traceable qualification.
Availability
1.5KE75CAHE3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface surge suppression requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for 1.5KE75CAHE3/51 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-energy transient suppression in harsh environments, targeting applications demanding AEC-Q101 qualification, UL 94 V-0 safety, and repeatable clamping performance under repetitive surge stress.
FAQ
What does the 'HE3/51' suffix mean in 1.5KE75CAHE3/51?
The 'HE3' suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; '/51' denotes the packaging variant - 51-piece bulk pack. This distinguishes 1.5KE75CAHE3/51 from commercial-grade E3 variants and confirms its suitability for automotive production use where process control and material compliance are audited.
Is 1.5KE75CAHE3/51 suitable for protecting RS-485 communication lines?
Yes, 1.5KE75CAHE3/51 is appropriate for RS-485 line protection due to its bi-directional symmetry, 104 V clamping voltage, and sub-nanosecond response. When placed across A/B differential pairs or from each line to ground, it suppresses ESD and fast transients without distorting the ±7 V signaling envelope - confirmed by Vishay's application note AN8004 for data line TVS implementation.
How does the clamping voltage of 1.5KE75CAHE3/51 compare to its breakdown voltage?
1.5KE75CAHE3/51 has a VBR range of 71.3–78.8 V and clamps at 104 V under 14.6 A peak pulse current. The 25–30 V margin between VBR and VC provides design headroom to avoid false triggering during normal operation while ensuring robust protection during surges - a key advantage over Zener-based protectors with narrower margins.
Can 1.5KE75CAHE3/51 be used in parallel to increase surge current handling?
Yes, multiple 1.5KE75CAHE3/51 devices can be paralleled to distribute surge current, but matching VBR (±5%) and layout symmetry are essential to prevent current imbalance. Vishay recommends using matched lots and equal-length traces; derating total IPPM by 15% per added device accounts for parametric variation - verified in Application Note AN8002 for parallel TVS configurations.
What is the maximum operating temperature for 1.5KE75CAHE3/51 in continuous service?
The maximum junction temperature for 1.5KE75CAHE3/51 is +175 °C, but continuous operation depends on power dissipation. At ambient 75 °C with infinite heatsink, its rated power is 6.5 W; derating follows the curve in Figure 5 of document 88301. For PCB-mounted use without heatsink, thermal resistance rises significantly - actual continuous TJ must be calculated using RθJA = 75 °C/W and measured board conditions.
1.5KE75CAHE3/51 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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
1.5KE75CAHE3/51 FAQ
1.How can I place an order for 1.5KE75CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75CAHE3/51 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 1.5KE75CAHE3/51 reliable?
The price and inventory of 1.5KE75CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75CAHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE75CAHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75CAHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75CAHE3/51?
1.5KE75CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75CAHE3/51 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 1.5KE75CAHE3/51?
For technical support, including 1.5KE75CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE75CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75CAHE3/51 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 1.5KE75CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE75CAHE3/51?
All 1.5KE75CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75CAHE3/51, 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 1.5KE75CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE75CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75CAHE3/51 Tags
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