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Vishay General Semiconductor - Diodes Division 1.5KE75CHE3/73
- Part No.:
- 1.5KE75CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75CHE3/73.pdf
- Description:
- TVS DIODE 60.7VWM 109VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,544
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Product details
Overview
1.5KE75CHE3/73 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 71.3 V to 78.8 V breakdown voltage (VBR), 64.1 V maximum standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), 14.6 A peak pulse current (IPPM), and clamps to ≤104 V at rated surge. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes in industrial and automotive power supplies.
For engineers reviewing the 1.5KE75CHE3/73 datasheet, 1.5KE75CHE3/73 pinout, 1.5KE75CHE3/73 application, or 1.5KE75CHE3/73 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package details, clamping behavior under 10/1000 µs surge, thermal derating curves, and AEC-Q101-qualified alternatives - all critical for ESD/surge protection design validation and BOM selection.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering bidirectional-capable clamping action only when configured as a CA variant; the 1.5KE75CHE3/73 is unidirectional, with cathode marked by a band. Its 104 V clamping voltage at 14.6 A ensures robust protection of 75 V-rated downstream circuitry while maintaining low incremental surge resistance.
It complies with JEDEC standard test waveforms (10/1000 µs), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and exhibits a temperature coefficient of +0.105 %/°C for VBR. Thermal resistance is 15.4 °C/W (junction-to-lead), enabling reliable operation up to 175 °C junction temperature with appropriate PCB copper pour.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V - Ensures reliable avalanche conduction onset above normal 64.1 V operating rail without false triggering |
| VWM | 64.1 V - Maximum continuous reverse working voltage; defines upper limit of safe DC bias before leakage rises |
| IPPM | 14.6 A - Peak surge current it safely clamps at 10/1000 µs waveform; determines minimum series impedance needed |
| VC @ IPPM | ≤104 V - Clamped voltage during full-rated surge; sets worst-case stress on protected load |
| PPPM | 1500 W - Peak pulse power handling capability; validates suitability for IEC 61000-4-5 Level 4 surges |
| TJ max | +175 °C - Enables use in under-hood automotive or high-ambient industrial environments without derating |
| RθJL | 15.4 °C/W - Low junction-to-lead thermal resistance supports high-reliability mounting on thick copper PCBs |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential node; carries full surge return current during clamping |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., 64 V rail); avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics over 1000+ surge events without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 Ed. 3 surge immunity requirements for industrial equipment |
| Clamping ratio VC/VBR ≈ 1.31 | Indicates low dynamic impedance (<1.5 Ω typical), minimizing let-through energy during fast transients |
| AEC-Q101 qualified (HE3 suffix variants) | Confirms reliability for automotive power electronics including body control modules and ADAS sensor power rails |
| UL 94 V-0 molding compound | Meets flammability safety standards for enclosed industrial enclosures and EV charging infrastructure |
Applications
| Industrial Motor Drive DC Bus Protection | Automotive Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Suppresses voltage spikes from contactor switching and regenerative braking on 48–72 V DC bus rails. IC Role / Device Role / Timing Role: Unidirectional TVS placed between bus rail and chassis ground; clamps within <1 ns to limit transient overshoot. Use Value: Prevents damage to gate drivers and MCU power supplies by limiting peak stress to ≤104 V during 1 kV/0.5 Ω IEC 61000-4-5 surges. |
Use Scenario: Protects 65 V-rated power management ICs in BCMs from load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on battery input line; coordinates with upstream fuse and downstream LDOs. Use Value: Withstands 200 A 8.3 ms surge per ISO 7637-2 Pulse 5a, ensuring system survival during alternator failure events. |
| Telecom Remote Radio Unit (RRU) Power Interface | Industrial PLC Analog Input Protection |
Use Scenario: Shields 48 V PoE-powered RRU front-end from induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on DC input; works with GDT and π-filter for multi-stage protection. Use Value: 1500 W rating handles 10/1000 µs lightning surges up to 10 kV open-circuit per ITU-T K.20/21, reducing downstream filter burden. |
Use Scenario: Guards 24 V analog input channels (e.g., 4–20 mA loops) against field-wiring ESD and accidental 240 VAC miswiring. IC Role / Device Role / Timing Role: Rail-to-rail unidirectional clamp on signal conditioning stage input; placed before instrumentation amplifier. Use Value: 64.1 V VWM allows full 24 V operation while clamping miswiring events to <104 V, preserving ADC front-end integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | DO-214AA package; lower 600 W PPPM; 75 V VBR min 71.3 V same; 10.3 A IPPM | Surface-mount; suited for space-constrained PCBs but requires larger copper area for thermal dissipation | Select for automated SMT assembly where board real estate is limited and 600 W surge margin suffices |
| 1.5KE75AHE3_B | Identical 1.5KE package and electrical specs; AEC-Q101 qualified; HE3_B denotes revision B and automotive qualification | Approved for automotive power systems requiring PPAP documentation and zero-defect reliability | Choose for automotive OEM designs where qualification traceability and long-term supply continuity are mandatory |
Compared with 1.5KE75CHE3/73, SMBJ75A-E3/52 offers SMT compatibility at reduced surge capacity, while 1.5KE75AHE3_B provides identical form-fit-function with certified automotive reliability - making the latter a drop-in upgrade for mission-critical vehicle applications.
Availability
1.5KE75CHE3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom remote radio units, and PLC analog input protection requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE75CHE3/73 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 diodes, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting industrial automation, transportation, and infrastructure applications where robustness against lightning and switching surges is non-negotiable.
FAQ
What is the polarity configuration of the 1.5KE75CHE3/73?
The 1.5KE75CHE3/73 is a unidirectional TVS diode, with the cathode clearly marked by a color band on the body. This configuration allows it to conduct only during positive overvoltage events on the cathode side relative to anode (ground), making it ideal for DC rail protection where reverse polarity is not expected. Its unidirectional nature distinguishes it from CA-suffixed variants like 1.5KE75CA, which are bidirectional.
Does the 1.5KE75CHE3/73 meet AEC-Q101 qualification?
No - the 1.5KE75CHE3/73 carries the commercial-grade E3 suffix and is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101, the functionally identical 1.5KE75AHE3_B is the designated qualified variant, with "HE3" denoting AEC-Q101 compliance and "B" indicating revision level. Always verify qualification status via Vishay's official part number cross-reference tool before automotive deployment.
What is the maximum clamping voltage of the 1.5KE75CHE3/73 under rated surge conditions?
The 1.5KE75CHE3/73 clamps to a maximum of 104 V when subjected to its rated 14.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the worst-case voltage imposed on protected circuitry during full-rated surge events - a critical parameter for verifying safe operating margins of downstream components.
How does the 1.5KE75CHE3/73 differ from the 1.5KE75A variant?
The 1.5KE75CHE3/73 and 1.5KE75A share identical electrical specifications and DO-201AD packaging, but differ in compliance and marking: "E3" indicates RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance, while base 1.5KE75A lacks explicit RoHS or whisker-test certification. Both are unidirectional and intended for general-purpose surge suppression.
Can the 1.5KE75CHE3/73 be used in parallel to increase surge current handling?
Yes - the 1.5KE75CHE3/73 may be paralleled to increase total IPPM capacity, but only with careful attention to matching VBR tolerances (±5 % per datasheet) and symmetrical PCB layout to ensure current sharing. Uneven distribution risks thermal runaway in one device; Vishay recommends using matched lots and adding small balancing resistors (0.1 Ω) if precise sharing is required for >2× rating.
1.5KE75CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 60.7V
- Voltage - Breakdown (Min):
- 67.5V
- Voltage - Clamping (Max) @ Ipp:
- 109V
- Current - Peak Pulse (10/1000µs):
- 13.9A
- 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
1.5KE75CHE3/73 FAQ
1.How can I place an order for 1.5KE75CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75CHE3/73 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 1.5KE75CHE3/73 reliable?
The price and inventory of 1.5KE75CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE75CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75CHE3/73?
1.5KE75CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75CHE3/73 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 1.5KE75CHE3/73?
For technical support, including 1.5KE75CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE75CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE75CHE3/73 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 1.5KE75CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE75CHE3/73?
All 1.5KE75CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75CHE3/73, 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 1.5KE75CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE75CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75CHE3/73 Tags
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