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Vishay General Semiconductor - Diodes Division 1.5KE120AHE3_B/C
- Part No.:
- 1.5KE120AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120AHE3_B/C.pdf
- Description:
- 1.5KW,120V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,253
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Product details
Overview
1.5KE120AHE3_B/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in power rails and signal lines. It features a 114 V to 126 V breakdown voltage (VBR), 102 V maximum working voltage (VWM), 165 V clamping voltage at 9.1 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1.5KE120AHE3_B/C datasheet, 1.5KE120AHE3_B/C pinout, 1.5KE120AHE3_B/C application, or 1.5KE120AHE3_B/C 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 lightning-surge transients per IEC 61000-4-5.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive-going surges, with a 3.5 V forward voltage at 100 A (per spec note for ≤1.5KE220A devices).
The device complies with AEC-Q101 stress testing for automotive use and supports soldering per JESD 22-B106 (275 °C, 10 s). Its molded epoxy case meets UL 94 V-0 flammability rating, and matte tin-plated leads satisfy J-STD-002 and JESD 22-B102 solderability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 102 V - maximum continuous reverse voltage before leakage exceeds 1 μA, defining safe operating margin |
| VC @ IPPM | 165 V - clamped voltage during 9.1 A 10/1000 µs surge, limiting downstream component stress |
| PPPM | 1500 W - peak surge power handling capability for standardized lightning/surge immunity compliance |
| TJ max. | +175 °C - high-temperature operation support for under-hood automotive and industrial power modules |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance enabling effective heat dissipation into PCB copper |
| IFSM | 200 A - surge current rating for 8.3 ms half-sine waveform, validating robustness against inductive switch-off events |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - axial-leaded, molded epoxy body (0.375" lead length), UL 94 V-0 rated, RoHS compliant, AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance reference; forms clamping loop with cathode during positive transients |
| Cathode | Reverse-biased terminal / surge shunt node | Connected to protected line; conducts when line voltage exceeds VWM, diverting surge energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive power inputs |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS power domains |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during clamping, reducing stress on downstream MOSFETs and ICs |
| Matte tin-plated leads | Ensures consistent solder wetting and intermetallic formation per J-STD-002, critical for high-reliability assembly |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator surge transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary shunt clamp placed between battery rail and ground, activated within <1 ns upon overvoltage detection. Use Value: Limits peak rail voltage to ≤165 V during 100 V/350 ms load dump, preventing damage to 36 V-rated DC-DC controllers and microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive coupling in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, suppressing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Clamps transient-induced voltage excursions to <165 V within 1 ns, preserving 12-bit ADC accuracy and preventing latch-up in op-amp front-ends. |
| Telecom AC/DC Power Supply Clamp | Consumer Appliance Motor Drive Surge Suppression |
Use Scenario: Safeguarding secondary-side rectifier outputs in telecom wall adapters exposed to lightning-induced surges on AC mains. IC Role / Device Role / Timing Role: Secondary-side TVS connected across bulk capacitor, clamping flyback spikes and differential-mode surges. Use Value: Absorbs 1500 W surge energy without degradation, maintaining output regulation and preventing capacitor overvoltage failure per UL 60950-1 Annex M. | Use Scenario: Protecting H-bridge gate drivers in smart appliance motor controls from back-EMF spikes during brushless DC motor commutation. IC Role / Device Role / Timing Role: Rail-to-ground TVS on 15–24 V logic supply, triggered by inductive kick from motor winding current interruption. Use Value: Limits supply rail overshoot to 165 V, ensuring gate driver ICs (e.g., DRV8305) remain within absolute maximum ratings during 200 A inductive turn-off events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | Lower peak power (600 W), smaller SMB package (vs. axial 1.5KE), higher VC/VBR ratio (1.45) | Better suited for space-constrained PCBs but insufficient for IEC 61000-4-5 Level 4; requires derating in high-temp environments | Select only if board area is critical and surge energy is limited to ≤600 W; verify thermal performance with RθJA = 110 °C/W |
| 1.5KE120CA | Bidirectional variant (no polarity marking), identical VBR/VC/PPPM, same AEC-Q101 qualification | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN bus); not usable in DC rail clamping without redesign | Choose for bidirectional protection needs; avoid for unidirectional DC rails due to unnecessary reverse conduction path |
Compared with 1.5KE120AHE3_B/C, SMBJ120A trades surge capacity for compactness and thermal efficiency in low-power designs, while 1.5KE120CA provides symmetrical clamping essential for AC or differential interfaces - neither offers drop-in replacement capability without circuit or layout review.
Availability
1.5KE120AHE3_B/C is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interfaces, telecom AC/DC supplies, and consumer appliance motor drives requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for 1.5KE120AHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power handling, and automotive-grade qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive power systems, industrial controls, and infrastructure equipment where sustained surge immunity and thermal stability are non-negotiable.
FAQ
What is the clamping voltage of the 1.5KE120AHE3_B/C under a 10/1000 µs surge?
The 1.5KE120AHE3_B/C clamps to a maximum of 165 V when subjected to its rated peak pulse current of 9.1 A using the standard 10/1000 µs waveform. This value is measured per Figure 7 in the Vishay datasheet 88301 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like 150 V-rated MOSFETs remain within safe operating area.
Is the 1.5KE120AHE3_B/C qualified for automotive applications?
Yes, the 1.5KE120AHE3_B/C carries the HE3 suffix, confirming full AEC-Q101 qualification per Note (2) on page 3 of Vishay document 88301. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - making it suitable for under-hood and chassis-mounted automotive modules where reliability under thermal and vibration stress is mandatory.
What does the "B/C" suffix mean in 1.5KE120AHE3_B/C?
The "B/C" suffix in 1.5KE120AHE3_B/C indicates packaging configuration: "B" denotes tape-and-reel delivery in 13-inch diameter reels, and "C" specifies the preferred package code per Vishay's ordering information table (page 3 of doc 88301). It does not affect electrical or thermal specifications - the device remains functionally identical to 1.5KE120AHE3_B and 1.5KE120AHE3_C variants.
Can the 1.5KE120AHE3_B/C be used in bidirectional signal protection?
No, the 1.5KE120AHE3_B/C is a unidirectional TVS diode, identifiable by its cathode band marking and specified VF = 3.5 V at 100 A. For bidirectional protection (e.g., RS-485, CAN), the 1.5KE120CA variant must be used - it lacks polarity marking and clamps symmetrically in both directions, whereas 1.5KE120AHE3_B/C conducts only during positive surges relative to cathode.
What is the thermal resistance from junction to lead (RθJL) for the 1.5KE120AHE3_B/C?
The 1.5KE120AHE3_B/C has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, as specified in the Thermal Characteristics table on page 3 of Vishay document 88301. This low value enables efficient heat transfer from the silicon die into the PCB copper via the axial leads - essential for sustaining repetitive surge events without exceeding the +175 °C maximum junction temperature.
1.5KE120AHE3_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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.5A
- 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
1.5KE120AHE3_B/C FAQ
1.How can I place an order for 1.5KE120AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120AHE3_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 1.5KE120AHE3_B/C reliable?
The price and inventory of 1.5KE120AHE3_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 1.5KE120AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE120AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE120AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120AHE3_B/C?
1.5KE120AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120AHE3_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 1.5KE120AHE3_B/C?
For technical support, including 1.5KE120AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE120AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE120AHE3_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 1.5KE120AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE120AHE3_B/C?
All 1.5KE120AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120AHE3_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 1.5KE120AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE120AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120AHE3_B/C Tags
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Diodes Incorporated
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Diodes Incorporated
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