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Vishay General Semiconductor - Diodes Division 1.5KE10AHE3/51
- Part No.:
- 1.5KE10AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE10AHE3/51.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,859
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Product details
Overview
1.5KE10AHE3/51 from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 9.5 V minimum breakdown voltage (VBR), 8.55 V maximum stand-off voltage (VWM), 14.5 V clamping voltage at 103 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability - used in protecting automotive ECUs, industrial sensor interfaces, and power supply inputs.
For engineers reviewing the 1.5KE10AHE3/51 datasheet, 1.5KE10AHE3/51 pinout, 1.5KE10AHE3/51 application, or 1.5KE10AHE3/51 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package details, clamping performance under surge conditions, RoHS-compliant and whisker-tested construction (JESD 201 Class 2), and direct alternative options for circuit redesign or supply continuity planning.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds VBR (9.5–10.5 V), it avalanches to divert transient energy away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<10 µA at 8.55 V).
It is rated for 1500 W peak pulse power with 10/1000 µs waveform, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and maintains operation from –55 °C to +175 °C junction temperature - enabling use in under-hood automotive environments and industrial power systems where thermal derating must be considered per Fig. 2 and Fig. 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 9.5 V / 10.5 V - defines precise avalanche initiation threshold; ensures reliable clamping onset before damage to protected ICs. |
| VWM | 8.55 V - maximum continuous reverse operating voltage; guarantees no conduction during normal DC rail operation. |
| VC @ IPPM | 14.5 V at 103 A - clamping voltage under full-rated surge; limits stress on downstream MOSFETs or microcontrollers. |
| PPPM | 1500 W - peak pulse power handling (10/1000 µs); enables robust protection against EFT, lightning-induced surges, and inductive switching transients. |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms); supports high-energy fault events without bond wire failure. |
| TJ max. | +175 °C - maximum junction temperature; allows deployment in high-ambient environments such as engine control modules. |
| RθJL | 15.4 °C/W - junction-to-lead thermal resistance; informs heatsinking requirements when mounted on PCB copper pour or chassis. |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS compliant, and qualified to AEC-Q101. Lead length 0.375" (9.5 mm), body diameter 0.210" (5.3 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in uni-directional configuration; conducts during positive transients if placed in forward bias. |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to protected line (e.g., 12 V rail); avalanches into conduction when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<10 µA) across temperature and lifetime. |
| 1500 W peak pulse power (10/1000 µs) | Provides single-event surge immunity exceeding IEC 61000-4-5 Level 4 (4 kV) when properly routed and decoupled. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| JESD 201 Class 2 whisker resistance | Eliminates risk of tin whisker growth in long-life, high-reliability deployments (e.g., EV battery management systems). |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD > 30 kV/µs), improving protection margin for sensitive analog front-ends. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply input of an automotive body control module (BCM) against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Shunt clamping device placed between VIN and ground, responding within <1 ns to limit voltage excursion to ≤14.5 V. Use Value: Prevents latch-up or permanent damage to MCU, CAN transceivers, and power management ICs during vehicle-level EMC testing. |
Use Scenario: Safeguarding 24 V analog input of a PLC analog I/O module against field-wiring induced surges (IEC 61000-4-4 EFT). IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal conditioning path; placed upstream of op-amp input stage and ADC driver. Use Value: Maintains signal integrity by limiting transient-induced offset shift and preventing saturation or input-stage breakdown. |
| DC-DC Converter Input Protection | Telecom Line Card Surge Suppression |
|
Use Scenario: Guarding the input of a 48 V to 5 V isolated DC-DC converter in telecom infrastructure against accidental AC mains coupling or lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient suppressor on primary-side bus; coordinated with MOV and filter inductors for staged energy absorption. Use Value: Extends converter lifespan by absorbing >90 % of 1500 W surge energy before secondary-side regulation circuitry sees overvoltage. |
Use Scenario: Protecting Ethernet PHY interface and PoE controller on a network switch line card exposed to outdoor cabling. IC Role / Device Role / Timing Role: Uni-directional TVS on DC bias line (e.g., MDI pair center tap) to clamp common-mode surges while preserving signal fidelity. Use Value: Enables compliance with GR-1089-CORE Section 4.5.2 (lightning surge) without degrading 100BASE-TX or 1000BASE-T signal rise time or jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Lower PPPM (600 W), smaller SMB package (vs. 1.5KE), VC = 17.0 V @ 35.1 A | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only) | Select when board space is constrained and surge threat level is limited to ±8 kV contact ESD or low-duty-cycle EFT. |
| 1.5KE10CA | Bi-directional variant; same VBR, VC, and PPPM; symmetric clamping for AC-coupled or floating lines | Required for differential signal lines (e.g., RS-485, CAN FD) where polarity reversal occurs; not usable on DC rails with defined ground reference | Choose for bidirectional data lines or ungrounded sensor outputs where transient polarity is undefined or alternating. |
Compared with 1.5KE10AHE3/51, SMBJ10A offers footprint savings but sacrifices 60 % peak power handling and automotive qualification; 1.5KE10CA retains identical surge capability but enables symmetrical clamping essential for differential signaling - neither is pin-compatible, requiring layout revision.
Availability
1.5KE10AHE3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for 1.5KE10AHE3/51 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 - delivering consistent clamping performance, extended temperature operation, and qualification to AEC-Q101 for mission-critical automotive and industrial applications.
FAQ
What is the breakdown voltage range for the 1.5KE10AHE3/51?
The 1.5KE10AHE3/51 has a guaranteed breakdown voltage (VBR) range of 9.5 V to 10.5 V at 1.0 mA test current, per Vishay Document 88301. This tight tolerance ensures predictable clamping onset and compatibility with 12 V system designs where overvoltage margin must be controlled precisely. The 1.5KE10AHE3/51 achieves this via laser-trimmed silicon junction and glass passivation.
Is the 1.5KE10AHE3/51 suitable for automotive applications?
Yes - the 1.5KE10AHE3/51 carries AEC-Q101 qualification (per note 2 on page 3 of Document 88301), confirming its suitability for automotive under-hood and cabin applications. It meets requirements for temperature cycling, humidity bias, and mechanical shock, and is rated for operation from –55 °C to +175 °C. The HE3 suffix denotes RoHS compliance and JESD 201 Class 2 whisker resistance, critical for long-life automotive modules.
How does the clamping voltage of the 1.5KE10AHE3/51 compare to its breakdown voltage?
The 1.5KE10AHE3/51 clamps at 14.5 V when subjected to its rated 103 A peak pulse current (10/1000 µs waveform), which is ~45 % above its minimum breakdown voltage of 9.5 V. This incremental clamping voltage (ΔVC = 5.0 V) reflects low dynamic impedance and ensures protected circuits remain below absolute maximum ratings during surge events - a key advantage over Zener-based alternatives with higher VC/VBR ratios.
What is the maximum steady-state power dissipation of the 1.5KE10AHE3/51?
The 1.5KE10AHE3/51 has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at lead temperature (TL) of 75 °C, as specified in the "Maximum Ratings" table. In typical PCB layouts without heatsinking, derating applies per Fig. 5 - e.g., at TL = 100 °C, PD drops to ~4.5 W. This rating governs continuous leakage power under elevated ambient conditions, not transient surge handling.
Does the 1.5KE10AHE3/51 have a marked cathode terminal?
Yes - the 1.5KE10AHE3/51 is a uni-directional TVS diode with a visible color band (typically black or dark gray) on the cathode end, per the "Polarity" note on page 1 of Document 88301. This marking aligns with standard diode polarity conventions and must be oriented toward the protected line (e.g., 12 V rail) to ensure correct reverse-bias clamping operation. Bi-directional variants (e.g., 1.5KE10CA) lack this marking.
1.5KE10AHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 103A
- 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
1.5KE10AHE3/51 FAQ
1.How can I place an order for 1.5KE10AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE10AHE3/51 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 1.5KE10AHE3/51 reliable?
The price and inventory of 1.5KE10AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE10AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE10AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE10AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE10AHE3/51?
1.5KE10AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE10AHE3/51 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 1.5KE10AHE3/51?
For technical support, including 1.5KE10AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE10AHE3/51 requirements.
6.How does Aetrix verify that 1.5KE10AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE10AHE3/51 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 1.5KE10AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE10AHE3/51?
All 1.5KE10AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE10AHE3/51, 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 1.5KE10AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE10AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE10AHE3/51 Tags
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