My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KA12AHE3/54
- Part No.:
- 1.5KA12AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA12AHE3/54.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:8,152
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KA12AHE3/54 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode designed for high-reliability inductive load switching protection. It features a 1500 W peak pulse power rating (10/1000 µs), 11.4–12.6 V breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 2.0 µA max reverse leakage at VWM, and AEC-Q101 qualification for under-hood automotive electronics.
For engineers reviewing the 1.5KA12AHE3/54 datasheet, 1.5KA12AHE3/54 pinout, 1.5KA12AHE3/54 application, or 1.5KA12AHE3/54 equivalent, key selection criteria include clamping voltage (16.7 V at 89.8 A), junction temperature range (–65 °C to +185 °C), RoHS-compliant HE3 packaging, and JESD201 Class 2 whisker resistance - critical for engine control units and sensor interface protection.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repetitive surge stress and operates exclusively in unidirectional polarity with a color-band cathode marking. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD and load-dump transients in 12 V automotive systems.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), 6.5 W power dissipation on infinite heatsink at TL = 75 °C, and maintains performance up to +185 °C junction temperature - supporting operation in high-temperature engine compartments without derating penalties below 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V - ensures reliable triggering above 12 V system nominal while avoiding false trips during cold-crank dips |
| VWM | 10.2 V - maximum continuous reverse voltage before leakage exceeds 2.0 µA, compatible with 12 V rail monitoring |
| VC @ IPPM | 16.7 V - clamping voltage at 89.8 A peak pulse, limiting downstream IC stress to safe levels during ISO 7637-2 Pulse 1/2a events |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, sufficient for automotive load-dump suppression |
| TJ max. | +185 °C - extended junction temperature rating enables direct mounting near heat sources without thermal derating |
| AEC-Q101 | Qualified - certified for automotive electronic modules requiring zero-failure reliability in safety-critical subsystems |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; lead length 0.375" (9.5 mm); diameter 0.210" (5.3 mm). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference | Provides low-impedance path to sink transient energy into chassis or power return plane |
| Cathode | Current exit point in forward bias; marked by color band | Connected to protected line (e.g., CAN_H, sensor supply) - clamps to anode when overvoltage occurs |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent VBR stability across temperature and lifetime, reducing design margin uncertainty in harsh environments |
| 1500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12 V systems without external series impedance |
| HE3 suffix compliance | Fulfills JESD201 Class 2 whisker resistance and RoHS 2002/95/EC - suitable for high-reliability automotive PCB assembly |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to protected ICs - critical for 16 V-tolerant microcontrollers and CAN transceivers |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive CAN Bus Line Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 40 V, 100 ms) induced by alternator disconnection in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input filter capacitor. Use Value: Clamps peak voltage to 16.7 V at 89.8 A, protecting downstream DC/DC converters and MCU power supplies from destructive overvoltage. | Use Scenario: Shields high-speed CAN_H/CAN_L differential pairs from ESD (±25 kV) and coupled transients in body control modules. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to chassis ground. Use Value: Sub-1 ns response and 16.7 V clamping prevent CAN transceiver latch-up while maintaining signal integrity up to 1 Mbps. |
| Automotive Sensor Signal Line Protection | Industrial Motor Drive Gate Driver Protection |
Use Scenario: Protects analog outputs (e.g., throttle position, coolant temp) from inductive kickback in solenoid-actuated subsystems. IC Role / Device Role / Timing Role: TVS placed at sensor connector interface, cathode to signal line, anode to ground. Use Value: 2.0 µA leakage at 10.2 V ensures minimal impact on 12-bit ADC accuracy; 185 °C rating supports under-hood placement. | Use Scenario: Guards isolated gate driver inputs against cross-talk and flyback spikes in 48 V auxiliary motor controllers. IC Role / Device Role / Timing Role: Unidirectional TVS on low-voltage logic side of reinforced isolation barrier. Use Value: AEC-Q101 qualification validates robustness in vibration-prone industrial vehicles; 1500 W rating handles repeated PWM switching surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12AHE3/52 | Same VBR range (11.4–12.6 V), lower PPPM (600 W), SMB package (smaller footprint, lower thermal mass) | Targeted at space-constrained infotainment modules; insufficient for full load-dump duty cycle | Select only for non-load-dump applications where board area is critical and surge energy ≤ 600 W |
| 1.5KE12A | Same 1500 W rating and VBR, but legacy DO-201 package, no AEC-Q101 qualification, higher VC (20.1 V) | Acceptable for industrial/commercial use; not approved for automotive production | Use only in cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with SMBJ12AHE3/52 and 1.5KE12A, the 1.5KA12AHE3/54 delivers superior thermal robustness (185 °C vs. 150 °C), lower clamping voltage (16.7 V vs. 20.1 V), and automotive qualification - making it the sole choice for production ECU and ADAS sensor interfaces requiring zero field failure.
Availability
1.5KA12AHE3/54 is available at Aetrix Electronics and suitable for automotive engine control units, CAN bus nodes, sensor interface circuits, and industrial motor drive gate drivers requiring stable component supply across multi-year production cycles.
Supply support for 1.5KA12AHE3/54 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 1.5KA family was engineered specifically for AEC-Q101-compliant transient suppression in 12 V and 24 V automotive power networks - emphasizing thermal resilience, surge consistency, and long-term parametric stability under temperature cycling.
FAQ
What is the clamping voltage of the 1.5KA12AHE3/54 at its rated peak pulse current?
The 1.5KA12AHE3/54 has a maximum clamping voltage (VC) of 16.7 V at its rated peak pulse current (IPPM) of 89.8 A, measured using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures protected circuitry remains within safe voltage limits during ISO 7637-2 Pulse 5a events. The 1.5KA12AHE3/54 achieves this with low incremental surge resistance inherent to its PAR® construction.
Is the 1.5KA12AHE3/54 qualified for automotive use?
Yes, the 1.5KA12AHE3/54 is AEC-Q101 qualified and designated as high-reliability/automotive grade per its HE3 suffix. It meets all stress tests including temperature cycling, humidity bias, and mechanical shock required for under-hood deployment. The 1.5KA12AHE3/54 is explicitly listed in Vishay's automotive-grade product portfolio and carries full PPAP documentation support for Tier 1 suppliers.
What does the "HE3" suffix indicate on the 1.5KA12AHE3/54?
The "HE3" suffix on the 1.5KA12AHE3/54 denotes RoHS compliance, high-reliability construction, and qualification to JESD201 Class 2 for tin whisker resistance - essential for automotive soldering processes and long-term field reliability. It also confirms UL 94 V-0 flammability rating and matte tin plating compliant with J-STD-002 and JESD22-B102. The 1.5KA12AHE3/54 uses this suffix to distinguish itself from commercial-grade variants.
How does the 1.5KA12AHE3/54 differ from the standard 1.5KA12A part?
The 1.5KA12AHE3/54 includes the HE3 suffix, which adds RoHS compliance, AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and enhanced process controls versus the base 1.5KA12A. Electrically identical, the 1.5KA12AHE3/54 is screened for automotive use with tighter parameter distributions and extended life testing. The 1.5KA12AHE3/54 is supplied in 13" paper tape and reel (54 mm carrier width, 1400 pcs/reel).
What is the maximum operating junction temperature for the 1.5KA12AHE3/54?
The 1.5KA12AHE3/54 has a maximum operating junction temperature (TJ) of +185 °C, verified per AEC-Q101 test conditions. This allows direct placement near heat sources such as power inductors or engine manifolds without thermal derating below 125 °C. The 1.5KA12AHE3/54 maintains specified VBR, VC, and leakage performance across its full –65 °C to +185 °C range, enabling use in extreme under-hood environments.
1.5KA12AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 89.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA12AHE3/54 FAQ
1.How can I place an order for 1.5KA12AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA12AHE3/54 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 1.5KA12AHE3/54 reliable?
The price and inventory of 1.5KA12AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA12AHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA12AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA12AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA12AHE3/54?
1.5KA12AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA12AHE3/54 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 1.5KA12AHE3/54?
For technical support, including 1.5KA12AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA12AHE3/54 requirements.
6.How does Aetrix verify that 1.5KA12AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA12AHE3/54 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 1.5KA12AHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA12AHE3/54?
All 1.5KA12AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA12AHE3/54, 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 1.5KA12AHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA12AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA12AHE3/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
