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Vishay General Semiconductor - Diodes Division 1.5KE27AHE3_A/C
- Part No.:
- 1.5KE27AHE3_A/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE27AHE3_A/C.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:611
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Product details
Overview
1.5KE27AHE3_A/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 25.7 V minimum breakdown voltage (VBR), 23.1 V maximum standoff voltage (VWM), 37.5 V clamping voltage (VC) at 40.0 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE27AHE3_A/C datasheet, 1.5KE27AHE3_A/C pinout, 1.5KE27AHE3_A/C application, or 1.5KE27AHE3_A/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), JEDEC 1.5KE package dimensions, and direct alternative part comparisons - all confirmed from Vishay Document #88301 (Rev. 09-Aug-2022).
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance, enabling effective clamping of fast transients induced by inductive switching or ESD events. Its 1500 W peak pulse power handling (10/1000 µs waveform) and 200 A non-repetitive forward surge current (8.3 ms half-sine) support high-energy transient suppression without degradation.
The device is rated for 6.5 W steady-state power dissipation on an infinite heatsink at TL = 75 °C and exhibits a temperature coefficient of VBR of +0.096 %/°C. The matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance (HE3 suffix), confirming suitability for automated assembly in automotive-grade production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA test current - defines precise voltage threshold where clamping initiates under controlled DC stress |
| VWM | 23.1 V maximum - ensures reliable blocking of normal operating voltage with <1 µA leakage at rated standoff |
| VC @ IPPM | 37.5 V at 40.0 A peak pulse current - actual clamped voltage seen by protected circuit during 10/1000 µs surge |
| PPPM | 1500 W - peak transient energy absorption capability per single 10/1000 µs pulse, critical for lightning/inductive spike immunity |
| TJ range | -55 °C to +175 °C - enables deployment in under-hood automotive, industrial motor drives, and outdoor power electronics |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, used to calculate safe power derating in real PCB layouts |
| AEC-Q101 | Qualified - validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body with matte tin-plated axial leads; meets UL 94 V-0 flammability rating and RoHS compliance (HE3 suffix denotes AEC-Q101 qualification).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential side of protected line; cathode must face higher potential for unidirectional clamping |
| Cathode | Current exit terminal in forward bias; marked with color band | Connected to higher-potential rail (e.g., VIN); reverse-biased operation enables clamping of positive transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) without failure or parameter shift |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero defect field performance |
| Sub-1 ns response time | Clamps transients before sensitive ICs (e.g., microcontrollers, CAN transceivers) experience damaging overvoltage |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability assemblies, eliminating latent short-circuit risk over 15+ year service life |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a, up to 60 V/100 ms) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp positive surges while blocking normal 12–16 V operation. Use Value: Limits voltage seen by downstream LDOs and MCU power pins to ≤37.5 V, preventing latch-up or oxide rupture. |
Use Scenario: 4–20 mA current loop sensors in factory automation subject to cable-induced ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback. IC Role / Device Role / Timing Role: TVS mounted across sensor output terminals to shunt transients before they reach analog front-end op-amps or ADC inputs. Use Value: Clamps fast-rising edges within 1 ns, preserving signal integrity and avoiding false readings or ADC saturation. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Protection |
Use Scenario: PoE-powered network switches with 48 V DC input susceptible to lightning-induced surges on outdoor Ethernet cabling. IC Role / Device Role / Timing Role: Primary-level TVS on main 48 V rail upstream of DC/DC converters and PHY ICs. Use Value: Absorbs 1500 W surge energy without thermal runaway, maintaining system uptime during transient events. |
Use Scenario: Brushed DC motor control in washing machines, where commutation spikes exceed 100 V on 24 V logic rails. IC Role / Device Role / Timing Role: TVS installed across motor driver IC supply pins to suppress inductive flyback voltage. Use Value: Prevents destructive overvoltage on gate drivers and logic ICs, reducing field return rates due to MOSFET failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPPM (600 W), smaller SMB package (RθJA ≈ 110 °C/W), VC = 38.9 V @ 15.4 A | Best suited for space-constrained consumer PCBs with moderate surge exposure (IEC 61000-4-5 Level 2) | Select when board area is limited and peak surge energy is ≤600 W; verify thermal margin given higher RθJA |
| 1.5KE27CA | Bidirectional variant (VBR = 25.7–28.4 V symmetric), same PPPM, VC = 43.5 V @ 34.5 A | Required for AC-coupled lines or bidirectional data buses (e.g., RS-485, CAN FD) where negative transients occur | Choose only if protecting balanced or AC-signaled paths; unidirectional 1.5KE27AHE3_A/C is superior for DC rail protection due to lower VC |
Compared with SMBJ24A, 1.5KE27AHE3_A/C delivers 2.5× higher surge energy handling and better thermal performance in high-power industrial environments; versus 1.5KE27CA, it provides tighter clamping (37.5 V vs. 43.5 V) for DC applications where polarity is fixed and negative transients are absent.
Availability
1.5KE27AHE3_A/C is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, telecom DC feeds, and appliance motor drive circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5KE27AHE3_A/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 automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 qualification, stable parametric performance over temperature, and robust mechanical construction for automated manufacturing.
FAQ
What is the exact breakdown voltage range for 1.5KE27AHE3_A/C?
The 1.5KE27AHE3_A/C has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1.0 mA test current, per Vishay Document #88301. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The value is measured under standardized JEDEC conditions and remains stable over the full -55 °C to +175 °C operating junction temperature range. 1.5KE27AHE3_A/C maintains this specification without drift after 1000 hours of high-temperature operating life testing.
Is 1.5KE27AHE3_A/C qualified for automotive use?
Yes, 1.5KE27AHE3_A/C carries the HE3 suffix, which explicitly denotes AEC-Q101 qualification per Vishay's ordering information and revision notes. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). This makes 1.5KE27AHE3_A/C suitable for under-hood engine control units, body control modules, and ADAS power supplies where zero-defect reliability is mandated.
What is the clamping voltage of 1.5KE27AHE3_A/C at its rated peak pulse current?
The clamping voltage (VC) of 1.5KE27AHE3_A/C is 37.5 V at 40.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform, as specified in the Electrical Characteristics table of Document #88301. This value represents the maximum voltage imposed on the protected circuit during worst-case surge conditions and is critical for ensuring downstream ICs remain within absolute maximum ratings. 1.5KE27AHE3_A/C achieves this with low incremental surge resistance, minimizing overshoot.
How does the HE3 suffix differ from the E3 suffix in 1.5KE27AHE3_A/C?
The HE3 suffix in 1.5KE27AHE3_A/C indicates RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes RoHS compliance only (commercial grade). Document #88301 confirms HE3 devices undergo additional automotive-specific reliability testing and are approved for use in safety-critical vehicle subsystems. The "A/C" in the full part number refers to packaging configuration (tape-and-reel), not functional differentiation. 1.5KE27AHE3_A/C is therefore the preferred choice for automotive Tier 1 suppliers.
Can 1.5KE27AHE3_A/C be used in bidirectional signal protection?
No, 1.5KE27AHE3_A/C is a unidirectional TVS diode - its cathode is marked with a color band and it conducts only in reverse bias above VBR. For bidirectional protection (e.g., RS-485, CAN, USB), the bidirectional variant 1.5KE27CA must be used. Attempting to use 1.5KE27AHE3_A/C on AC-coupled or polarity-agnostic lines risks forward conduction during negative transients, leading to device failure or system malfunction. Always match polarity type to signal architecture. 1.5KE27AHE3_A/C is strictly intended for DC rail protection with defined polarity.
1.5KE27AHE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 40A
- 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
1.5KE27AHE3_A/C FAQ
1.How can I place an order for 1.5KE27AHE3_A/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE27AHE3_A/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 1.5KE27AHE3_A/C reliable?
The price and inventory of 1.5KE27AHE3_A/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE27AHE3_A/C is usually 5 days.
3.What payment methods are accepted for 1.5KE27AHE3_A/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE27AHE3_A/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE27AHE3_A/C?
1.5KE27AHE3_A/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE27AHE3_A/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 1.5KE27AHE3_A/C?
For technical support, including 1.5KE27AHE3_A/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE27AHE3_A/C requirements.
6.How does Aetrix verify that 1.5KE27AHE3_A/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE27AHE3_A/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 1.5KE27AHE3_A/C meets industry standards.
7.What is the process for return or replacement of 1.5KE27AHE3_A/C?
All 1.5KE27AHE3_A/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE27AHE3_A/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 1.5KE27AHE3_A/C part is unused and in its original packaging.
Return procedure for 1.5KE27AHE3_A/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE27AHE3_A/C Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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