My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KA43HE3/54
- Part No.:
- 1.5KA43HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA43HE3/54.pdf
- Description:
- TVS DIODE 34.8VWM 61.9VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:4,732
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KA43HE3/54 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 61.9 V under 24.2 A surge current, and operates up to +185 °C junction temperature - ideal for protecting automotive sensor signal lines and MOSFET gate drivers against load dump and inductive switching transients.
For engineers reviewing the 1.5KA43HE3/54 datasheet, 1.5KA43HE3/54 pinout, 1.5KA43HE3/54 application, or 1.5KA43HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 34.8 V stand-off voltage, low 0.101 %/°C VBR tempco, and RoHS-compliant HE3 packaging with JESD201 Class 2 whisker resistance.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable clamping under repeated surge stress and exhibits very fast response time (<1 ns) due to its passivated junction and low incremental surge resistance. Its unidirectional polarity and 1.0 mA test current ensure precise breakdown voltage control between 38.7 V and 47.3 V.
The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine), maintains 3.5 V max forward voltage at 100 A, and supports operation from –65 °C to +185 °C - enabling use in under-hood automotive modules where thermal derating and reliability 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 events |
| Breakdown Voltage (VBR) | 38.7 V min / 47.3 V max at 1.0 mA - defines precise clamping threshold for 36 V nominal systems |
| Stand-off Voltage (VWM) | 34.8 V - ensures no conduction during normal 32–36 V operating range in 24 V automotive systems |
| Clamping Voltage (VC) | 61.9 V at 24.2 A - limits downstream voltage stress on protected ICs and MOSFETs |
| Junction Temperature Range | –65 °C to +185 °C - enables direct mounting in high-temperature engine compartments |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD |
| RoHS & Whisker Compliance | HE3 suffix: RoHS-compliant, JESD201 Class 2 tin whisker resistance |
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).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side reference in unidirectional TVS configuration |
| Cathode | Current exit point; marked by color band | Connected to protected line - clamps to anode when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable clamping performance over 1000+ surge cycles without parameter drift |
| 1500 W peak pulse power | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 24 V systems |
| AEC-Q101 qualification | Validated for automotive under-hood use including HTGB, HTRB, and TCT |
| Low VBR tempco (0.101 %/°C) | Minimizes clamping voltage shift across –40 °C to +125 °C ambient range |
| Solder dip 260 °C, 40 s | Supports standard lead-free reflow and wave soldering processes without degradation |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting CAN transceiver signal lines and microcontroller GPIOs from alternator load dump and relay coil flyback in diesel engine ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches sensitive interface ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic inputs while maintaining signal integrity during 100 V/100 ms pulses. | Use Scenario: Shielding PLC analog input channels and digital outputs from inductive kickback in solenoid valve control circuits. IC Role / Device Role / Timing Role: Fast-acting voltage clamp placed directly at connector entry point. Use Value: Limits transient overshoot to <62 V, keeping protected 24 V-rated op-amps and isolators within safe operating area. |
| Automotive ADAS Camera Module | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding FPD-Link III serial interface lines in rear-view camera modules exposed to battery transients during jump-start events. IC Role / Device Role / Timing Role: Standoff-mode protector on differential data lines with minimal capacitance impact. Use Value: Clamps 1500 W surges within nanoseconds while adding only ~100 pF capacitance at 0 V bias - preserving 3 Gbps signal fidelity. | Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs subject to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converters and hot-swap controllers. Use Value: Absorbs 10/1000 µs surges up to 1500 W without degradation, ensuring uninterrupted power delivery to base station radios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36AHE3/52 | Lower PPPM (600 W), lower VBR (40–44.4 V), same AEC-Q101 and HE3 package | Better suited for 24 V systems with lower surge energy; not rated for full load-dump compliance | Select when system-level testing confirms <600 W surge exposure and tighter VBR tolerance is required |
| 1.5KE43A | Same VBR range but non-automotive grade; no AEC-Q101; higher leakage at 150 °C | Limited to industrial/commercial use; unsuitable for automotive production due to reliability validation gap | Acceptable only for cost-sensitive non-automotive prototypes where qualification is not mandated |
Compared with SMBJ36AHE3/52 and 1.5KE43A, the 1.5KA43HE3/54 provides verified 1500 W load-dump capability, extended 185 °C operation, and AEC-Q101 traceability - making it the sole choice for production automotive modules requiring zero field failures under thermal and surge stress.
Availability
1.5KA43HE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive protection, and ADAS camera module development requiring stable component supply and long-term lifecycle assurance.
Supply support for 1.5KA43HE3/54 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, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5KA series was engineered specifically for AEC-Q101-compliant automotive transient suppression - emphasizing thermal robustness, surge endurance, and process-controlled VBR tightness in harsh under-hood environments.
FAQ
What is the maximum clamping voltage of the 1.5KA43HE3/54 under specified surge conditions?
The 1.5KA43HE3/54 has a maximum clamping voltage (VC) of 61.9 V at 24.2 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components remain within safe voltage limits during standardized automotive surge events such as ISO 7637-2 Pulse 5a. The 1.5KA43HE3/54 achieves this clamping performance while maintaining low incremental surge resistance and stable behavior across temperature.
Is the 1.5KA43HE3/54 qualified for automotive use per AEC-Q101?
Yes, the 1.5KA43HE3/54 is explicitly AEC-Q101 qualified, as confirmed in Vishay document 88300 (Revision 20-Oct-08), Section "Mechanical Data" and "Notes". The HE3 suffix denotes high-reliability, automotive-grade construction, including validation for high-temperature reverse bias (HTRB), temperature cycling (TCT), and accelerated life testing. This qualification applies directly to the 1.5KA43HE3/54, not just the family.
What does the 'HE3/54' suffix mean in 1.5KA43HE3/54?
The 'HE3' suffix indicates RoHS-compliant, high-reliability construction meeting JESD201 Class 2 whisker resistance and solder dip 260 °C / 40 s requirements. The '/54' denotes the preferred package code: 13-inch paper tape and reel, 1400 units per reel. This ordering format is defined in the "Ordering Information" section of Vishay document 88300 and applies uniquely to the 1.5KA43HE3/54 variant.
How does the 1.5KA43HE3/54 differ from the 1.5KA43A variant?
The 1.5KA43HE3/54 has a breakdown voltage range of 38.7 V to 47.3 V at 1.0 mA, while the 1.5KA43A variant is tighter: 40.9 V to 45.2 V. Both share identical power ratings, clamping voltage (61.9 V vs. 59.3 V), and AEC-Q101 qualification. The 1.5KA43HE3/54 offers broader VBR tolerance for cost-sensitive designs where exact clamping threshold is less critical than total surge immunity.
Can the 1.5KA43HE3/54 be used in bidirectional configurations?
No - the 1.5KA43HE3/54 is unidirectional only, as stated in the "Features" section of Vishay document 88300. Its cathode is marked by a color band, and it conducts only in reverse breakdown. For bidirectional protection, separate devices or dedicated bidirectional TVS arrays must be used; the 1.5KA43HE3/54 itself cannot be wired or operated as bidirectional.
1.5KA43HE3/54 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):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 24.2A
- 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
1.5KA43HE3/54 FAQ
1.How can I place an order for 1.5KA43HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA43HE3/54 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 1.5KA43HE3/54 reliable?
The price and inventory of 1.5KA43HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA43HE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA43HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA43HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA43HE3/54?
1.5KA43HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA43HE3/54 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 1.5KA43HE3/54?
For technical support, including 1.5KA43HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA43HE3/54 requirements.
6.How does Aetrix verify that 1.5KA43HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA43HE3/54 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 1.5KA43HE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA43HE3/54?
All 1.5KA43HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA43HE3/54, 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 1.5KA43HE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA43HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA43HE3/54 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
