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Vishay General Semiconductor - Diodes Division 1.5KA16AHE3/73
- Part No.:
- 1.5KA16AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA16AHE3/73.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:3,690
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Product details
Overview
1.5KA16AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-reliability clamping in power line and signal line protection. It features 1500 W peak pulse power (10/1000 µs), 16.8 V maximum breakdown voltage, 13.6 V stand-off voltage, 66.7 A peak pulse current, and AEC-Q101 qualification for under-hood automotive electronics.
For engineers reviewing the 1.5KA16AHE3/73 datasheet, 1.5KA16AHE3/73 pinout, 1.5KA16AHE3/73 application, or 1.5KA16AHE3/73 equivalent, this part supports robust overvoltage protection in engine control units, battery management systems, and sensor interface circuits where high-temperature stability (TJ up to +185 °C) and low clamping voltage (22.5 V at IPPM) are critical.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable clamping under repetitive surge stress and operates exclusively in unidirectional polarity with a color-banded cathode. Its 10/1000 µs waveform response delivers consistent 1500 W pulse handling while maintaining low incremental surge resistance and fast response time - essential for protecting MOSFETs and ICs against load dump and inductive switching transients.
The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine), exhibits 3.5 V max forward voltage at 100 A, and meets JESD201 Class 2 whisker resistance and RoHS/WEEE compliance. Its thermal design supports operation from –65 °C to +185 °C junction temperature, with derating above 25 °C ambient per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains automotive load dump surges without degradation |
| Breakdown Voltage VBR | 15.2 V min / 16.8 V max at 1.0 mA - defines precise clamping onset threshold |
| Stand-off Voltage VWM | 13.6 V - ensures no conduction during normal 12 V system operation |
| Clamping Voltage VC | 22.5 V at 66.7 A - limits protected circuit voltage during worst-case surge |
| Peak Pulse Current IPPM | 66.7 A - quantifies maximum transient energy absorption capability |
| Junction Temperature Range | –65 °C to +185 °C - enables deployment in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling and HTRB |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with matte tin-plated leads; UL 94 V-0 rated; lead length 9.5 mm (0.375″); diameter 4.8–5.3 mm; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line (e.g., ground or return path) |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail or signal input); marked by color band |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable VBR and low dynamic impedance across lifetime surge events |
| 1500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a/b load dump requirements for 12 V systems |
| AEC-Q101 qualified (automotive grade) | Validated for automotive under-hood use including HTSL, TCT, and HTRB testing |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes voltage overshoot on sensitive downstream components during transients |
| Matte tin plating, J-STD-002/JESD22-B102 compliant | Ensures reliable solder wetting and long-term interconnect integrity |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Battery Management System (BMS) Voltage Monitoring |
|---|---|
Use Scenario: Protects ECU main 12 V supply against alternator load dump and inductive switching spikes during ignition cycling. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC/DC input stage. Use Value: Limits transient voltage to ≤22.5 V, preventing damage to LDOs and microcontrollers while sustaining 1500 W surge energy. |
Use Scenario: Shields BMS analog front-end inputs measuring cell stack voltage from CAN bus coupling and relay bounce transients. IC Role / Device Role / Timing Role: Standoff-clamp protector on differential voltage sense lines upstream of precision ADC. Use Value: Maintains 13.6 V stand-off to avoid false triggering, with 22.5 V clamping preserving measurement accuracy during 66.7 A surges. |
| Automotive HVAC Blower Motor Driver | ADAS Camera Module Power Rail Protection |
Use Scenario: Suppresses back-EMF spikes generated by brushed blower motor commutation in climate control systems. IC Role / Device Role / Timing Role: TVS placed across motor driver H-bridge supply rails to clamp inductive kickback. Use Value: Absorbs 1500 W pulses with <1 ns response, preventing gate oxide failure in MOSFET drivers. |
Use Scenario: Guards 5 V/3.3 V camera module power inputs against ESD and cable discharge events in rear-view or surround-view systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on PMIC input before buck converter stage. Use Value: Withstands 200 A 8.3 ms surge and operates to +185 °C, ensuring reliability in sealed, thermally constrained housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16AHE3/52 | Lower peak pulse power (600 W), same VWM (13.6 V), SMB package (smaller footprint, lower thermal mass) | Suitable for lower-energy transients; not rated for AEC-Q101 or 1500 W load dump | Select when space-constrained and surge energy is limited to ISO 7637-2 Pulse 1/2a; verify thermal margin in PCB layout. |
| 1.5KE16A | Same VBR range and 1500 W rating, but TO-204AA (Axial Lead) package and no AEC-Q101 qualification | Lacks automotive reliability validation; higher inductance due to axial leads | Acceptable for industrial/commercial 12 V systems where AEC-Q101 is not mandated and board layout permits axial mounting. |
Compared with SMBJ16AHE3/52 and 1.5KE16A, the 1.5KA16AHE3/73 uniquely combines AEC-Q101 qualification, 1500 W clamping, and low-inductance radial-leaded 1.5KA package - making it the only option qualified for high-energy automotive load dump protection in compact under-hood modules.
Availability
1.5KA16AHE3/73 is available at Aetrix Electronics and suitable for automotive engine control units, battery management systems, and ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1.5KA16AHE3/73 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 optoelectronics for automotive, industrial, and computing markets.
The 1.5KA series was engineered specifically for AEC-Q101-compliant automotive transient suppression, emphasizing thermal robustness, stable clamping under repeated surges, and compatibility with automated SMT assembly using the HE3 suffix (JESD201 Class 2 whisker resistant).
FAQ
What is the clamping voltage of the 1.5KA16AHE3/73 at its rated peak pulse current?
The 1.5KA16AHE3/73 has a maximum clamping voltage (VC) of 22.5 V at its rated peak pulse current of 66.7 A (10/1000 µs waveform). This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting during automotive load dump events. The 1.5KA16AHE3/73 maintains this clamping performance across its full operating temperature range.
Is the 1.5KA16AHE3/73 suitable for bidirectional transient protection?
No, the 1.5KA16AHE3/73 is a unidirectional TVS diode and is not suitable for bidirectional protection. Its electrical characteristics - including breakdown voltage specification and polarity marking (cathode band) - are defined only for reverse-biased clamping operation. For bidirectional applications, a dedicated symmetric device such as the 1.5SMC16AHE3 must be selected instead of the 1.5KA16AHE3/73.
Does the 1.5KA16AHE3/73 meet AEC-Q101 requirements for automotive use?
Yes, the 1.5KA16AHE3/73 is explicitly qualified to AEC-Q101 standards for discrete semiconductors. This qualification includes stress tests such as high-temperature reverse bias (HTRB), temperature cycling (TCT), and highly accelerated life testing (HALT), confirming suitability for under-hood automotive applications. The "A" suffix and "HE3" packaging denote this automotive-grade reliability level for the 1.5KA16AHE3/73.
What is the maximum operating junction temperature for the 1.5KA16AHE3/73?
The 1.5KA16AHE3/73 has a maximum operating junction temperature (TJ) of +185 °C, as specified in the Absolute Maximum Ratings table. This high thermal limit supports deployment in high-ambient environments such as engine compartments, and the device's derating curve (Fig. 2) defines safe power dissipation limits above 25 °C ambient. The 1.5KA16AHE3/73 retains full functionality across its entire –65 °C to +185 °C junction range.
How does the 1.5KA16AHE3/73 differ from the standard 1.5KA16A variant?
The 1.5KA16AHE3/73 differs from the base 1.5KA16A by its packaging and qualification: the "HE3" suffix indicates RoHS-compliant, matte tin-plated leads meeting JESD201 Class 2 whisker resistance, and the "/73" denotes a specific tape-and-reel packaging configuration (7" reel, 1400 pcs). Both share identical electrical specs and AEC-Q101 qualification, but the 1.5KA16AHE3/73 is optimized for high-reliability automated assembly - a key distinction for the 1.5KA16AHE3/73 in production environments.
1.5KA16AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- 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
1.5KA16AHE3/73 FAQ
1.How can I place an order for 1.5KA16AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA16AHE3/73 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 1.5KA16AHE3/73 reliable?
The price and inventory of 1.5KA16AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA16AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA16AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA16AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA16AHE3/73?
1.5KA16AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA16AHE3/73 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 1.5KA16AHE3/73?
For technical support, including 1.5KA16AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA16AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA16AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA16AHE3/73 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 1.5KA16AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA16AHE3/73?
All 1.5KA16AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA16AHE3/73, 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 1.5KA16AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA16AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA16AHE3/73 Tags
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