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Vishay General Semiconductor - Diodes Division 1.5KA36AHE3/73
- Part No.:
- 1.5KA36AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA36AHE3/73.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:5,612
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Product details
Overview
1.5KA36AHE3/73 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 49.9 V under 30.1 A peak pulse current, and operates up to +185 °C junction temperature - ideal for protecting automotive sensor signal lines and MOSFET gates against load-switching transients.
For engineers reviewing the 1.5KA36AHE3/73 datasheet, 1.5KA36AHE3/73 pinout, 1.5KA36AHE3/73 application, or 1.5KA36AHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, 34.2–37.8 V breakdown range, 30.8 V stand-off voltage, low 0.099 %/°C VBR tempco, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses patented PAR® construction for stable clamping under repetitive surge stress and features a molded epoxy case rated UL 94 V-0. Its unidirectional polarity and matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 reliability standards.
Designed for automotive-grade reliability, it supports operation from –65 °C to +185 °C, withstands 200 A non-repetitive forward surge (8.3 ms half-sine), and maintains <1 µA leakage at 30.8 V (TJ = 150 °C), enabling robust protection in engine control units and ADAS sensor interfaces.
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) | 34.2 V min / 37.8 V max at 1 mA - defines precise clamping onset threshold for system-level overvoltage immunity |
| Stand-off Voltage (VWM) | 30.8 V - ensures no conduction during normal 24 V automotive rail operation |
| Clamping Voltage (VC) | 49.9 V at 30.1 A - limits protected circuit voltage to safe level during worst-case surge |
| Operating Temperature Range | –65 °C to +185 °C - enables deployment in under-hood ECUs and transmission control modules |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| RoHS & Whisker Compliance | RoHS 2002/95/EC; JESD201 Class 2 - eliminates tin whisker risk in long-life automotive assemblies |
Pinout & Package
Package: Case Style 1.5KA - axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference; enables unidirectional clamping to GND |
| Cathode | Current exit point; marked by color band | Connected to protected line (e.g., CAN_H, sensor output); absorbs positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance across 1000+ surge cycles without parameter drift |
| 1500 W peak pulse rating (10/1000 µs) | Meets ISO 7637-2 Pulse 5a/b energy requirements for 24 V commercial vehicle systems |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response time) |
| Solder dip tolerance | Withstands 260 °C for 40 s - compatible with standard lead-free reflow and wave soldering |
| High-temperature stability | 0.099 %/°C VBR tempco ensures predictable clamping across full operating range |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Sensor Interface |
|---|---|
Use Scenario: Protection of 5 V sensor supply rails and LIN bus lines against alternator load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and ground, absorbing >100 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends during cold-crank and jump-start events. |
Use Scenario: Guarding MIPI CSI-2 data lines and power inputs of surround-view camera modules against ESD and cable discharge. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) unidirectional clamp on differential pairs, preserving signal integrity up to 1.5 Gbps. Use Value: Maintains image fidelity while meeting ISO 10605 ±8 kV contact discharge immunity without adding jitter or skew. |
| Industrial Motor Drive I/O | Commercial Telematics Module |
Use Scenario: Shielding digital I/O (GPIO, PWM) and encoder feedback lines from inductive kickback in HVAC blower and pump controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS (30.8 V) placed at connector interface to shunt surges before reaching isolation barriers or MCU pins. Use Value: Eliminates field failures caused by 600 V/μs transients induced by 24 V solenoid switching in factory automation cabinets. |
Use Scenario: Securing LTE antenna control lines, GNSS RF bias feeds, and CAN FD communication ports in fleet-tracking telematics units. IC Role / Device Role / Timing Role: High-reliability TVS with AEC-Q101 qualification deployed across multiple voltage domains (12 V, 5 V, 3.3 V). Use Value: Ensures 15-year field life in mobile infrastructure by surviving repeated thermal cycling and vibration-induced surge coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36AHE3/52 | Same VWM (30.8 V) and VC (49.9 V), but lower PPPM (600 W) and smaller SMB package (3.5 mm x 3.5 mm) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5; preferred for space-constrained PCBs | Select when board area is critical and surge energy stays below 100 mJ |
| 1.5KE36A-E3/54 | Same electrical specs but TO-204AA (DO-41) package, non-AEC-Q101, and no HE3 whisker qualification | Acceptable for industrial/commercial use only; lacks automotive qualification and long-term whisker resistance | Choose for cost-sensitive non-automotive designs where AEC-Q101 and JESD201 Class 2 are not required |
Compared with SMBJ36AHE3/52 and 1.5KE36A-E3/54, the 1.5KA36AHE3/73 uniquely combines 1500 W surge capability, AEC-Q101 qualification, and JESD201 Class 2 whisker resistance in an axial-leaded automotive package - making it the only option qualified for under-hood deployment in safety-critical vehicle subsystems.
Availability
1.5KA36AHE3/73 is available at Aetrix Electronics and suitable for automotive ECU protection, ADAS sensor interface hardening, and industrial motor drive I/O shielding requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1.5KA36AHE3/73 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 high-temperature stability, repeatable clamping, and long-term whisker resistance in under-hood environments.
FAQ
What is the exact breakdown voltage range for 1.5KA36AHE3/73?
The 1.5KA36AHE3/73 has a guaranteed breakdown voltage (VBR) range of 34.2 V to 37.8 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable clamping behavior in automotive 24 V systems where overvoltage thresholds must be precisely controlled to avoid nuisance triggering or insufficient protection.
Is 1.5KA36AHE3/73 qualified to AEC-Q101?
Yes, the 1.5KA36AHE3/73 is explicitly AEC-Q101 qualified, as confirmed in the "Notes" section of Vishay document 88300 (Revision 20-Oct-08). This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), validating its suitability for automotive under-hood applications.
What does the HE3 suffix indicate on 1.5KA36AHE3/73?
The HE3 suffix on 1.5KA36AHE3/73 denotes RoHS compliance, high-reliability automotive grade, and JESD201 Class 2 whisker resistance. It confirms the device meets stringent automotive plating requirements to prevent tin whisker growth over 15+ years of operation - a mandatory specification for safety-critical vehicle electronics.
What is the maximum clamping voltage for 1.5KA36AHE3/73 at rated peak pulse current?
The 1.5KA36AHE3/73 clamps to a maximum of 49.9 V at its rated peak pulse current of 30.1 A (10/1000 µs waveform). This value is specified in the Electrical Characteristics table of document 88300 and defines the upper voltage limit imposed on protected circuits during worst-case surge events.
Can 1.5KA36AHE3/73 be used in bidirectional configurations?
No, the 1.5KA36AHE3/73 is unidirectional only, as stated in the FEATURES section of document 88300. It protects against positive transients referenced to ground. For bidirectional protection (e.g., AC lines or differential buses), two devices in series-opposing configuration or a dedicated bidirectional TVS such as SMAJ36A would be required.
1.5KA36AHE3/73 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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
1.5KA36AHE3/73 FAQ
1.How can I place an order for 1.5KA36AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA36AHE3/73 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 1.5KA36AHE3/73 reliable?
The price and inventory of 1.5KA36AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA36AHE3/73 is usually 5 days.
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1.5KA36AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA36AHE3/73 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 1.5KA36AHE3/73?
For technical support, including 1.5KA36AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA36AHE3/73 requirements.
6.How does Aetrix verify that 1.5KA36AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KA36AHE3/73 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 1.5KA36AHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KA36AHE3/73?
All 1.5KA36AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA36AHE3/73, 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 1.5KA36AHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KA36AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA36AHE3/73 Tags
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