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Vishay General Semiconductor - Diodes Division 1.5KA22AHE3/73
- Part No.:
- 1.5KA22AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA22AHE3/73.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:4,942
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Product details
Overview
1.5KA22AHE3/73 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode designed for high-energy surge protection in harsh environments. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 30.6 V under 49.0 A peak pulse current, and operates up to +185 °C junction temperature - ideal for protecting automotive sensor signal lines against inductive switching transients.
For engineers reviewing the 1.5KA22AHE3/73 datasheet, 1.5KA22AHE3/73 pinout, 1.5KA22AHE3/73 application, or 1.5KA22AHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, 20.9–23.1 V breakdown range, low 0.092 %/°C VBR tempco, and RoHS-compliant HE3 packaging with matte tin leads.
Technical Context
This TVS diode employs Vishay's patented PAR® construction for stable clamping under repeated surge stress and high-temperature operation. Its unidirectional polarity enables precise reverse-biased protection of DC-powered circuits, with fast response time and low incremental surge resistance ensuring minimal let-through voltage during ESD or load-dump events.
Rated for automotive use per AEC-Q101, it supports operation from –65 °C to +185 °C and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). The device is optimized for placement on signal lines feeding ICs or MOSFETs where low leakage (<1 µA at 18.8 V) and tight VBR tolerance (±5%) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients without failure in automotive load-dump scenarios |
| Breakdown Voltage VBR | 20.9–23.1 V at 1 mA - ensures reliable triggering before downstream IC damage thresholds |
| Clamping Voltage VC | 30.6 V at 49.0 A - limits voltage seen by protected circuitry during worst-case surge |
| Stand-off Voltage VWM | 18.8 V - allows normal 12 V automotive system operation with margin |
| Junction Temperature Range | –65 °C to +185 °C - meets under-hood thermal requirements for AEC-Q101 compliance |
| Leakage Current ID | <1 µA at 18.8 V, 150 °C - prevents signal distortion or battery drain in always-on systems |
| Tempco of VBR | 0.092 %/°C - minimizes voltage shift across temperature, improving protection consistency |
Pinout & Package
Case Style 1.5KA: axial-leaded, molded epoxy package with cathode band marking; UL 94 V-0 rated body; matte tin-plated leads compliant with J-STD-002 and JESD22-B102; HE3 suffix passes JESD201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return in unidirectional TVS configuration |
| Cathode | Protected line connection | Connected to signal or power line being safeguarded; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable clamping performance and long-term reliability under repetitive surge stress |
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control and ADAS sensor interfaces |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events |
| Low incremental surge resistance | Reduces clamping voltage overshoot during fast-rising transients (e.g., ESD, inductive kick) |
| RoHS-compliant HE3 packaging | Meets automotive environmental standards with whisker-resistant matte tin plating |
Applications
| Automotive Engine Control Unit (ECU) Inputs | ADAS Camera Signal Lines |
|---|---|
Use Scenario: Protecting analog sensor inputs (e.g., throttle position, coolant temperature) from load-dump and alternator ripple in 12 V vehicle electrical systems. IC Role / Device Role: Unidirectional TVS placed between signal trace and chassis ground to clamp transients before reaching MCU ADC input. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers while maintaining <1 µA leakage at 18.8 V operating voltage. | Use Scenario: Safeguarding FPD-Link or GMSL serial video interface lines running from rear-view camera to infotainment display. IC Role / Device Role: Low-capacitance TVS on differential pair to suppress ESD and cable-induced surges without distorting high-speed video signals. Use Value: Clamps to 30.6 V within nanoseconds, preserving signal integrity and meeting ISO 10605 ESD immunity requirements. |
| Industrial CAN Bus Nodes | Telecom Power Supply Monitoring |
Use Scenario: Protecting CANH/CANL transceivers in factory automation nodes exposed to motor drive noise and relay switching. IC Role / Device Role: Bidirectional protection not applicable; this unidirectional part used on VCC rail or ground-referenced signal lines adjacent to CAN bus. Use Value: Provides 1500 W surge handling and 185 °C operation for robustness in hot control cabinet environments. | Use Scenario: Guarding voltage sense inputs on telecom rectifier modules monitoring -48 V DC distribution lines. IC Role / Device Role: Standoff-rated TVS on precision shunt-regulator feedback path to prevent false overvoltage trips during lightning-induced surges. Use Value: Tight 20.9–23.1 V VBR window ensures accurate trip threshold alignment with ±1% reference ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22AHE3/52 | Same VBR range (20.9–23.1 V), lower 600 W PPPM rating, SMB surface-mount package | Not suitable for high-energy load-dump; limited to board-level ESD on compact PCBs | Select when space-constrained layout prohibits axial-leaded devices and surge energy is ≤600 W |
| 1.5KE22A | Same 1500 W rating and VBR, but legacy DO-201 package, no AEC-Q101 qualification, higher leakage at 150 °C | Lacks automotive reliability validation; unsuitable for safety-critical ECUs or ADAS | Acceptable for industrial or consumer designs where AEC-Q101 is not mandated |
Compared with SMBJ22AHE3/52 and 1.5KE22A, the 1.5KA22AHE3/73 uniquely combines AEC-Q101 qualification, 1500 W capability in an axial package, and guaranteed low leakage at 150 °C - making it the only choice for thermally demanding automotive signal-line protection requiring long-term field reliability.
Availability
1.5KA22AHE3/73 is available at Aetrix Electronics and suitable for automotive ECU design, ADAS sensor interface protection, and industrial CAN node hardening requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 1.5KA22AHE3/73 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1.5KA series was engineered specifically for automotive transient suppression, emphasizing AEC-Q101 compliance, high-temperature stability, and robust PAR®-based clamping performance in under-hood and chassis-mounted electronics.
FAQ
What is the exact breakdown voltage range for 1.5KA22AHE3/73?
The 1.5KA22AHE3/73 has a specified breakdown voltage (VBR) range of 20.9 V to 23.1 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent triggering behavior across production lots and supports precise coordination with downstream IC overvoltage thresholds in automotive applications.
Is 1.5KA22AHE3/73 suitable for bidirectional transient protection?
No - the 1.5KA22AHE3/73 is a unidirectional TVS diode, intended for reverse-biased protection of DC circuits. It lacks symmetrical clamping characteristics required for AC or bipolar signal lines. For bidirectional protection, Vishay offers complementary parts such as the 1.5SMC22A series, but those are not functionally interchangeable with the 1.5KA22AHE3/73.
Does 1.5KA22AHE3/73 meet AEC-Q101 requirements?
Yes - the 1.5KA22AHE3/73 is explicitly qualified to AEC-Q101 for automotive applications. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life. The HE3 suffix confirms RoHS compliance and JESD201 Class 2 whisker resistance, both required for modern automotive electronics.
What is the maximum clamping voltage of 1.5KA22AHE3/73 under surge conditions?
The 1.5KA22AHE3/73 clamps to a maximum of 30.6 V when subjected to its rated peak pulse current of 49.0 A (10/1000 µs waveform). This value is guaranteed per datasheet Figure 4 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can 1.5KA22AHE3/73 be soldered using standard reflow profiles?
No - the 1.5KA22AHE3/73 is an axial-leaded through-hole device intended for wave soldering or hand soldering. Its maximum solder dip rating is 260 °C for 40 seconds. Reflow profiles are not applicable; attempting reflow may damage the molded epoxy body or compromise internal junction integrity.
1.5KA22AHE3/73 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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
1.5KA22AHE3/73 FAQ
1.How can I place an order for 1.5KA22AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA22AHE3/73 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 1.5KA22AHE3/73 reliable?
The price and inventory of 1.5KA22AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA22AHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KA22AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA22AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA22AHE3/73?
1.5KA22AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA22AHE3/73 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 1.5KA22AHE3/73?
For technical support, including 1.5KA22AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA22AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA22AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA22AHE3/73 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 1.5KA22AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA22AHE3/73?
All 1.5KA22AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA22AHE3/73, 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 1.5KA22AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA22AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA22AHE3/73 Tags
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