My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA43CAHE3/54
- Part No.:
- SA43CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA43CAHE3/54.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,083
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA43CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 500 W peak pulse power (10/1000 μs), 43 V stand-off voltage (VWM), 69.4 V maximum clamping voltage (VC) at 7.2 A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA43CAHE3/54 datasheet, SA43CAHE3/54 pinout, SA43CAHE3/54 application, or SA43CAHE3/54 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, and validated alternatives for ESD and inductive switching protection in automotive ECUs and industrial sensor interfaces.
Technical Context
The SA43CAHE3/54 operates as a symmetrical, bidirectional avalanche diode with no polarity marking, enabling identical clamping in both directions. Its breakdown voltage (VBR) is specified between 47.8 V and 52.8 V at 1 mA test current, and it maintains stable clamping up to 175 °C junction temperature.
It uses glass-passivated chip junction technology for low incremental surge resistance and fast response time (<1 ns), meeting IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) immunity requirements when properly laid out. The device is rated for repetitive 0.01% duty cycle surges and complies with JESD 22-B106 soldering standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 47.8 V / 52.8 V at 1 mA - Ensures reliable avalanche initiation across manufacturing lot and temperature |
| VC @ IPPM | 69.4 V at 7.2 A - Clamping voltage during 10/1000 μs surge; limits downstream IC stress |
| PPPM | 500 W - Peak transient energy absorption capability under standardized waveform |
| IFSM | Not applicable - Bidirectional device has no forward surge rating (unidirectional only) |
| TJ max | 175 °C - Enables operation in under-hood automotive environments without derating |
| Package | DO-15 (DO-204AC) - Industry-standard axial leaded package with 0.258" body length and matte tin leads |
Pinout & Package
SA43CAHE3/54 is a two-terminal bidirectional TVS diode in DO-15 package. No polarity marking; terminals are interchangeable. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with 275 °C/10 s max solder dip tolerance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamps voltage above ±69.4 V in either direction |
| Leads (L1/L2) | PCB interconnect interface | Provide mechanical anchoring and thermal path; lead length affects inductance and clamping performance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| 500 W peak pulse power (10/1000 μs) | Withstands high-energy transients from load dump or inductive switching without degradation |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
| UL 94 V-0 molded epoxy case | Provides flame-retardant housing suitable for enclosed industrial and automotive enclosures |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or 12 V supply rails in body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Standby clamping element placed directly at connector entry point to shunt surge energy before reaching MCU or transceiver. Use Value: Limits transient voltage to ≤69.4 V, preventing latch-up or gate oxide damage in 3.3 V/5 V automotive microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on differential or single-ended signal lines exposed to field wiring noise. Use Value: Maintains signal integrity by clamping EFT bursts (IEC 61000-4-4) without adding capacitance that would distort 1–10 kHz sensor bandwidth. |
| Telecom Line Surge Suppression | Consumer Appliance Motor Control |
Use Scenario: Protecting RS-485 transceivers in building automation gateways from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary line-side TVS placed before common-mode choke to absorb common-mode energy. Use Value: Withstands 500 W surges while maintaining <1 nF junction capacitance, preserving signal rise time for 10 Mbps data rates. | Use Scenario: Shielding motor driver ICs in washing machine control boards from back-EMF spikes during brushless DC motor commutation. IC Role / Device Role / Timing Role: Low-inductance TVS mounted adjacent to H-bridge MOSFETs to clamp inductive kickback. Use Value: Responds in <1 ns to limit VDS overshoot, reducing need for oversized MOSFETs and lowering BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | Same VWM (43 V), lower PPPM (400 W), SMA package (surface-mount) | Requires PCB rework for SMT layout; unsuitable for through-hole legacy designs | Select when board space is constrained and reflow assembly is available |
| 1.5KE43CA | Same VWM (43 V), higher PPPM (1500 W), DO-201 package (larger body, 2.5 mm lead spacing) | Higher surge margin but requires larger footprint and may not fit tight connector areas | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 (4 kV) |
Compared with SMAJ43CA and 1.5KE43CA, the SA43CAHE3/54 offers AEC-Q101 qualification and DO-15 form factor ideal for automotive through-hole production, balancing robustness, qualification, and legacy compatibility without requiring layout changes.
Availability
SA43CAHE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom line surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SA43CAHE3/54 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 diodes, rectifiers, and protection devices with emphasis on reliability, qualification, and application-specific performance.
The SAxxCA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for bidirectional transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SA43CAHE3/54 under a 10/1000 μs surge?
The SA43CAHE3/54 has a maximum clamping voltage (VC) of 69.4 V at 7.2 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 9 in the Vishay datasheet 88378 and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SA43CAHE3/54 suitable for automotive applications?
Yes, SA43CAHE3/54 is AEC-Q101 qualified (as indicated by the "HE3" suffix) and rated for operation from –55 °C to +175 °C. Its glass-passivated junction, DO-15 mechanical robustness, and compliance with JESD 22-B106 soldering ensure suitability for under-hood and body-control module deployments where SA43CAHE3/54 provides certified transient protection.
Does SA43CAHE3/54 have polarity markings?
No, SA43CAHE3/54 is a bidirectional TVS diode and carries no polarity marking on its DO-15 package. Both terminals are functionally identical, allowing installation in either orientation - a key advantage for protecting AC-coupled or differential signal paths where polarity reversal is possible.
What is the standoff voltage (VWM) of SA43CAHE3/54?
The standoff voltage (VWM) of SA43CAHE3/54 is 43 V - the maximum DC or RMS voltage the device will block without entering avalanche conduction. This parameter ensures SA43CAHE3/54 remains non-conductive during normal operation while triggering reliably above 47.8 V breakdown threshold.
How does SA43CAHE3/54 differ from unidirectional SA43AHE3/54?
SA43CAHE3/54 is bidirectional with symmetrical clamping in both directions and no cathode band, whereas SA43AHE3/54 is unidirectional with a cathode marking and conducts only in reverse bias. SA43CAHE3/54 supports AC or floating-line protection; SA43AHE3/54 is used where polarity is fixed and forward conduction must be blocked.
SA43CAHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA43CAHE3/54 FAQ
1.How can I place an order for SA43CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA43CAHE3/54 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 SA43CAHE3/54 reliable?
The price and inventory of SA43CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA43CAHE3/54 is usually 5 days.
3.What payment methods are accepted for SA43CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA43CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA43CAHE3/54?
SA43CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA43CAHE3/54 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 SA43CAHE3/54?
For technical support, including SA43CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA43CAHE3/54 requirements.
6.How does Aetrix verify that SA43CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA43CAHE3/54 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 SA43CAHE3/54 meets industry standards.
7.What is the process for return or replacement of SA43CAHE3/54?
All SA43CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA43CAHE3/54, 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 SA43CAHE3/54 part is unused and in its original packaging.
Return procedure for SA43CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA43CAHE3/54 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 …
