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Vishay General Semiconductor - Diodes Division 1.5KE7.5AHE3_B/C
- Part No.:
- 1.5KE7.5AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5AHE3_B/C.pdf
- Description:
- 1.5KW,7.5V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,068
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Product details
Overview
1.5KE7.5AHE3_B/C from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA, 6.40 V maximum standoff voltage (VWM), 11.3 V clamping voltage (VC) at 133 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in industrial power supplies.
For engineers reviewing the 1.5KE7.5AHE3_B/C datasheet, 1.5KE7.5AHE3_B/C pinout, 1.5KE7.5AHE3_B/C application, or 1.5KE7.5AHE3_B/C equivalent, this part delivers verified unidirectional clamping performance with AEC-Q101 qualification, RoHS-compliant matte tin leads, and JEDEC-standard 1.5KE package compatibility - critical for automotive-grade power rail hardening and legacy board-level surge resilience.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking and exhibits 3.5 V forward voltage at 100 A, enabling effective crowbar-style clamping during fast-rising transients.
The device is rated for 1500 W peak pulse power under 10/1000 µs waveform with 0.01 % duty cycle, derated linearly above 25 °C ambient per Fig. 2, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine). Thermal resistance is 15.4 °C/W junction-to-lead, confirming suitability for lead-mounted PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise clamping initiation threshold for reliable overvoltage detection |
| VWM | 6.40 V - maximum continuous reverse operating voltage before leakage exceeds 500 µA |
| VC @ IPPM | 11.3 V at 133 A - clamped voltage seen by protected circuit during full 1500 W transient event |
| PPPM | 1500 W (10/1000 µs) - enables robust protection against lightning-induced surges and inductive kickback |
| IFSM | 200 A (8.3 ms half-sine) - supports single-event surge survival in motor drive and relay control circuits |
| TJ range | -55 °C to +175 °C - ensures operation in under-hood automotive, industrial PLC, and outdoor power electronics |
| Leakage @ VWM | 500 µA max - minimizes standby power loss in always-on 5 V/3.3 V rail protection |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body, UL 94 V-0 rated, 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 | Current entry point in forward bias | Connected to ground or low-side return path when protecting positive rail |
| Cathode (banded end) | Current exit point in forward bias; high-impedance terminal in reverse bias | Connected to protected line (e.g., +12 V rail); clamps to anode when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| AEC-Q101 qualified (HE3_B suffix) | Validated for automotive powertrain and body electronics per stress test requirements |
| 1500 W peak pulse power | Provides margin against IEC 61000-4-5 Level 4 (4 kV) surge events on 50 Ω source impedance |
| Sub-1 ns response time | Clamps before sensitive CMOS gate oxides experience destructive overvoltage |
| JESD 201 Class 2 whisker resistance (HE3) | Prevents tin whisker growth in high-reliability, long-life applications such as telecom infrastructure |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp spikes up to 40 V. Use Value: Limits rail voltage to ≤11.3 V during 133 A surge, preventing damage to LDOs and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point to shunt transients before signal conditioning stage. Use Value: 500 µA leakage at 6.4 V avoids loading 4–20 mA loop accuracy; 11.3 V clamping preserves ADC front-end integrity. |
| DC Motor Drive Board Protection | Legacy Industrial Control Power Supply |
Use Scenario: Suppressing inductive kickback from brushed DC motors controlled by H-bridge MOSFETs. IC Role / Device Role / Timing Role: Mounted across motor terminals or high-side supply rail to absorb flyback energy. Use Value: 200 A IFSM rating withstands repeated commutation surges; 1500 W PPPM handles worst-case stall conditions. |
Use Scenario: Hardening 24 V PLC power inputs against field-wiring transients and ground bounce. IC Role / Device Role / Timing Role: Primary-stage TVS on bulk input before bridge rectifier and bulk capacitor. Use Value: -55 °C to +175 °C TJ range supports operation in unventilated enclosures; RoHS HE3 suffix meets industrial lifecycle compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower PPPM (600 W), smaller SMB package (vs. axial 1.5KE), 7.78 V VBR min | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤Level 2 |
| 1.5KE7.5A-E3/54 | Same electrical specs, but commercial-grade (non-AEC-Q101), packaged in tape-and-reel with code "54" | Not qualified for automotive use; lacks JESD 201 Class 2 whisker resistance | Choose for cost-sensitive industrial or consumer designs where automotive qualification is unnecessary |
Compared with 1.5KE7.5AHE3_B/C, SMBJ7.0A trades peak power and thermal robustness for compactness, while 1.5KE7.5A-E3/54 retains identical clamping behavior but omits automotive qualification and enhanced whisker resistance - making the HE3_B/C variant uniquely suited for safety-critical, long-lifecycle deployments.
Availability
1.5KE7.5AHE3_B/C is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, DC motor drive board surge suppression, and legacy PLC power supply stabilization requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE7.5AHE3_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 diodes, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising long-term parametric stability.
FAQ
What is the breakdown voltage tolerance of the 1.5KE7.5AHE3_B/C?
The 1.5KE7.5AHE3_B/C has a guaranteed breakdown voltage range of 7.13 V to 7.88 V at 10 mA test current, corresponding to ±5 % tolerance around the nominal 7.5 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable system-level overvoltage margining in designs using the 1.5KE7.5AHE3_B/C.
Is the 1.5KE7.5AHE3_B/C suitable for bidirectional transient protection?
No, the 1.5KE7.5AHE3_B/C is strictly unidirectional - its cathode band denotes polarity, and it conducts only when anode-to-cathode voltage exceeds VBR. For bidirectional protection, Vishay offers the 1.5KE7.5CAHE3_B/C variant. Using the 1.5KE7.5AHE3_B/C in AC or floating-line applications risks incomplete clamping and potential device failure.
Does the 1.5KE7.5AHE3_B/C meet automotive qualification standards?
Yes, the "HE3_B" suffix confirms AEC-Q101 qualification per Vishay Document Number 88301, applicable to the 1.5KE6.8AHE3_B through 1.5KE220AHE3_B family. The 1.5KE7.5AHE3_B/C has passed stress tests including HTGB, HTRB, and temperature cycling, validating its use in automotive powertrain and body electronics where reliability is mission-critical.
What is the maximum clamping voltage of the 1.5KE7.5AHE3_B/C under surge conditions?
The 1.5KE7.5AHE3_B/C clamps to a maximum of 11.3 V when subjected to its rated 133 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 the protected circuit during a full 1500 W transient - a key parameter for verifying downstream IC survivability in the 1.5KE7.5AHE3_B/C design-in.
How does the 1.5KE7.5AHE3_B/C differ from the commercial-grade 1.5KE7.5A-E3/54?
The 1.5KE7.5AHE3_B/C adds AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas the 1.5KE7.5A-E3/54 is commercial-grade only. Both share identical electrical parameters (VBR, VC, PPPM), but the HE3_B/C variant is intended for automotive and high-reliability industrial use, while the -E3/54 version targets cost-sensitive consumer and general-purpose applications where qualification is not required.
1.5KE7.5AHE3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 139A
- 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
1.5KE7.5AHE3_B/C FAQ
1.How can I place an order for 1.5KE7.5AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5AHE3_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 1.5KE7.5AHE3_B/C reliable?
The price and inventory of 1.5KE7.5AHE3_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 1.5KE7.5AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5AHE3_B/C?
1.5KE7.5AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5AHE3_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 1.5KE7.5AHE3_B/C?
For technical support, including 1.5KE7.5AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE7.5AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5AHE3_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 1.5KE7.5AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5AHE3_B/C?
All 1.5KE7.5AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5AHE3_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 1.5KE7.5AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE7.5AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5AHE3_B/C Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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