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Vishay General Semiconductor - Diodes Division 1.5KE12AHE3_B/C
- Part No.:
- 1.5KE12AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12AHE3_B/C.pdf
- Description:
- 1.5KW,12V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,902
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Product details
Overview
1.5KE12AHE3_B/C 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 12 V breakdown voltage (VBR = 11.4–12.6 V at 1.0 mA), 16.7 V maximum clamping voltage (VC) at 89.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE12AHE3_B/C datasheet, 1.5KE12AHE3_B/C pinout, 1.5KE12AHE3_B/C application, or 1.5KE12AHE3_B/C equivalent, this part delivers verified AEC-Q101 qualification (per note 2), RoHS-compliant matte tin-plated leads, and UL 94 V-0 molded epoxy packaging - critical for automotive, industrial, and telecom surge protection design-in.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below its stand-off voltage (VWM = 10.2 V), then rapidly avalanches above breakdown to clamp transient energy. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling sub-nanosecond response time (<1 ns) to fast-rising transients.
The device is rated for 200 A non-repetitive forward surge current (IFSM) and supports continuous power dissipation of 6.5 W on an infinite heatsink at TL = 75 °C. Thermal resistance is specified as RθJA = 75 °C/W and RθJL = 15.4 °C/W, confirming suitability for lead-mounted PCB-level protection without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at IT = 1.0 mA - defines precise avalanche onset threshold for reliable clamping activation |
| VWM | 10.2 V - maximum continuous reverse working voltage before leakage exceeds 5 μA |
| VC @ IPPM | 16.7 V at 89.8 A - clamping voltage under 10/1000 µs surge, limiting downstream component stress |
| PPPM | 1500 W - peak pulse power handling capability, sufficient for IEC 61000-4-5 Level 4 surge immunity |
| IFSM | 200 A - 8.3 ms half-sine surge current rating, supporting robust protection against motor-switching events |
| TJ range | –55 °C to +175 °C - extended junction temperature range enables under-hood and industrial deployment |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements (note 2) |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body meeting UL 94 V-0 flammability rating; 0.375" (9.5 mm) lead length; 0.042" (1.07 mm) lead diameter; total weight 0.968 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional configuration |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 12 V rail or signal input) to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR drift <0.1 %/°C and long-term parameter consistency across thermal cycling |
| 1500 W 10/1000 µs pulse rating | Supports single-event surge suppression compliant with IEC 61000-4-5 Ed. 3 (4 kV open-circuit, 2 Ω source) |
| AEC-Q101 qualified (HE3_B suffix) | Validated for automotive electronics per stress tests including HTGB, HTRB, and temperature cycling |
| Matte tin-plated leads | Guarantees solderability per J-STD-002/JESD 22-B102 and whisker resistance per JESD 201 Class 2 |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical industrial and transport applications |
Applications
| Automotive Power Rail 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: Unidirectional shunt TVS placed between power rail and chassis ground to clamp spikes up to 1500 W. Use Value: Limits voltage excursion to ≤16.7 V during 89.8 A surge, preventing damage to microcontrollers and CAN transceivers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point to suppress ESD and cable discharge events. Use Value: Sub-ns response clamps transients before reaching precision ADC front-end, preserving measurement integrity. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Secondary-side DC bus protection in PoE-powered network switches and base stations. IC Role / Device Role / Timing Role: Standoff-rated TVS on 48 V or 54 V distribution lines to absorb induced lightning surges. Use Value: Withstands repetitive 10/1000 µs pulses at 0.01 % duty cycle, extending system uptime in outdoor deployments. |
Use Scenario: Input-stage overvoltage protection in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Primary clamping element after bridge rectifier, before bulk capacitor and controller IC. Use Value: 10.2 V VWM allows safe operation across universal input (90–264 VAC), while 16.7 V VC prevents controller latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | DO-214AA package; 12 V VBR; 17.0 V VC @ 84.5 A; 600 W PPPM | Lower power rating limits use to sub-IEC Level 3 surges; surface-mount only | Select when board space is constrained and surge energy is ≤600 W |
| 1.5KE12CA | Bidirectional variant; same VBR/VC ratings but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal occurs | Choose only if bidirectional protection is mandated by circuit topology |
Compared with SMBJ12A and 1.5KE12CA, the 1.5KE12AHE3_B/C provides higher surge robustness (1500 W vs. 600 W) and through-hole mechanical stability, while retaining AEC-Q101 qualification - making it optimal for high-reliability DC power rail protection where layout flexibility and ruggedness are prioritized.
Availability
1.5KE12AHE3_B/C is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, telecom line cards, and consumer power adapters requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE12AHE3_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 demanding industrial and automotive environments.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent clamping performance, AEC-Q101 validation, and UL-certified packaging for mission-critical overvoltage protection.
FAQ
What is the breakdown voltage tolerance of the 1.5KE12AHE3_B/C?
The 1.5KE12AHE3_B/C has a guaranteed breakdown voltage range of 11.4 V to 12.6 V at test current IT = 1.0 mA, corresponding to ±5 % tolerance around the nominal 12 V rating. This tight VBR window ensures predictable clamping behavior across manufacturing lots and temperature extremes, critical for compliance with ISO 7637-2 Pulse 1 and Pulse 2b test limits.
Is the 1.5KE12AHE3_B/C suitable for automotive applications?
Yes, the 1.5KE12AHE3_B/C is AEC-Q101 qualified (as confirmed in Note 2 of Vishay document 88301), covering stress tests including high-temperature reverse bias, high-temperature operating life, and temperature cycling. Its –55 °C to +175 °C operating range and RoHS-compliant HE3_B suffix make it approved for under-hood and body-control module deployments.
How does the 1.5KE12AHE3_B/C differ from the standard 1.5KE12A?
The 1.5KE12AHE3_B/C adds two key enhancements over the base 1.5KE12A: (1) RoHS-compliant matte tin plating meeting JESD 201 Class 2 whisker resistance, and (2) formal AEC-Q101 qualification per Note 2. The "B/C" suffix denotes tape-and-reel packaging (1400 pcs per 13″ reel), whereas standard 1.5KE12A may ship in bulk or different formats.
What is the maximum clamping voltage of the 1.5KE12AHE3_B/C under surge conditions?
The 1.5KE12AHE3_B/C exhibits a maximum clamping voltage (VC) of 16.7 V when subjected to its rated peak pulse current of 89.8 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the worst-case voltage seen by downstream circuitry during a full-power transient event.
Can the 1.5KE12AHE3_B/C be used in bidirectional configurations?
No - the 1.5KE12AHE3_B/C is strictly unidirectional, indicated by the "A" suffix (vs. "CA" for bidirectional). Its cathode band marks the clamping terminal; reverse connection would block conduction. For bidirectional protection, the functionally matched 1.5KE12CA must be selected, which provides symmetric clamping in both polarities.
1.5KE12AHE3_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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 94A
- 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
1.5KE12AHE3_B/C FAQ
1.How can I place an order for 1.5KE12AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12AHE3_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 1.5KE12AHE3_B/C reliable?
The price and inventory of 1.5KE12AHE3_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 1.5KE12AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE12AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12AHE3_B/C?
1.5KE12AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12AHE3_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 1.5KE12AHE3_B/C?
For technical support, including 1.5KE12AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE12AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE12AHE3_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 1.5KE12AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE12AHE3_B/C?
All 1.5KE12AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12AHE3_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 1.5KE12AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE12AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12AHE3_B/C Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
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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D5V0L1B2WS-7
Diodes Incorporated
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