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Vishay General Semiconductor - Diodes Division SA24CHE3/54
- Part No.:
- SA24CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA24CHE3/54.pdf
- Description:
- TVS DIODE 24VWM 43VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,640
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Product details
Overview
SA24CHE3/54 from Vishay is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), 12.9 A peak pulse current (IPPM), and clamps to ≤38.9 V at rated IPPM. It is AEC-Q101 qualified and used in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SA24CHE3/54 datasheet, SA24CHE3/54 pinout, SA24CHE3/54 application, or SA24CHE3/54 equivalent, key selection criteria include bi-directional clamping capability, DO-15 mechanical compatibility, AEC-Q101 qualification, 24 V system-level surge immunity, and thermal derating above 25 °C ambient.
Technical Context
This device operates as a voltage-clamping protector with symmetrical bi-directional avalanche behavior-no polarity marking required. Its glass-passivated junction enables fast response (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 μs transients at 0.01% duty cycle.
Designed for use without series impedance in many cases, it delivers consistent clamping performance across -55 °C to +175 °C junction temperature range and supports soldering per J-STD-002 and JESD 22-B102, with matte tin-plated leads and UL 94 V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 24 V nominal systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above VWM with margin against tolerance drift. |
| IPPM | 12.9 A - Peak current handled during 10/1000 μs transient; determines minimum series impedance needed for IEC 61000-4-5 compliance. |
| VC | ≤38.9 V - Clamped voltage at IPPM; defines maximum stress imposed on downstream ICs or MOSFETs during surge events. |
| PPPM | 500 W - Peak pulse power rating; validates suitability for Level 3/4 lightning/surge immunity per IEC 61000-4-5. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive or high-ambient industrial environments. |
| Qualification | AEC-Q101 - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case with UL 94 V-0 rating. Bi-directional construction means no cathode band; both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Either terminal serves as input/output for bidirectional surge suppression; no polarity dependency simplifies PCB layout and orientation. |
| Lead 1 / Lead 2 | Thermal and mechanical interface | Matte tin-plated copper leads support hand and wave soldering per JESD 22-B102; 0.375" (9.5 mm) lead length standard for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables <1 ns response time and stable leakage (<1 μA at VWM), critical for protecting high-speed sensor interfaces. |
| 500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line) surge testing without external current limiting in many 24 V applications. |
| AEC-Q101 qualification | Validates reliability for automotive body electronics, ADAS sensor modules, and infotainment power rails requiring zero field failures. |
| Low incremental clamping resistance | Ensures VC stays tightly bounded near VBR-ΔV = VC − VBR ≤12.2 V-reducing overvoltage overshoot on protected nodes. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and automotive material compliance requirements (e.g., VW 80101). |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to limit transients before they reach signal conditioning circuitry. Use Value: Maintains signal integrity by clamping induced spikes to ≤38.9 V while surviving repeated 12 V/24 V system surges per AEC-Q101 stress profiles. | Use Scenario: Safeguarding digital input channels of programmable logic controllers against inductive kickback from solenoid/relay switching in factory automation. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input lines, absorbing energy from >100 mJ transients without degradation over 10⁵+ events. Use Value: Eliminates need for external series resistors or RC snubbers due to low dynamic impedance and repeatable clamping performance. |
| Telecom Line Interface | Power Supply Rail Clamp |
Use Scenario: Shielding RS-485/RS-422 differential data lines in base station remote units exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Paired back-to-back configuration (or single bi-directional unit) across differential pair to suppress common-mode transients up to ±30 kV contact discharge. Use Value: Provides symmetrical clamping with matched VBR tolerances (±5%), ensuring balanced noise rejection and minimal signal distortion. | Use Scenario: Secondary overvoltage protection on 24 V DC power distribution rails feeding microcontrollers and communication ICs in embedded gateways. IC Role / Device Role / Timing Role: Final-stage clamp after primary TVS or fuse, limiting residual transients that bypass upstream protection to safe levels for downstream silicon. Use Value: Withstands 70 A non-repetitive forward surge (IFSM) and maintains VWM stability over 1000-hour HTOL testing at 150 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM (24 V), same DO-214AC package, lower PPPM (400 W), higher VC (43.5 V at IPPM), not AEC-Q101 qualified. | Preferred for cost-sensitive consumer electronics where automotive qualification is unnecessary. | Select SMAJ24CA only when AEC-Q101 is not mandated and board space allows SMC footprint. |
| 1.5KE24CA | Higher PPPM (1500 W), larger DO-201AE package, same VWM, VC = 38.7 V, AEC-Q101 not claimed. | Suitable for high-energy industrial mains-connected equipment requiring >500 W surge handling. | Choose 1.5KE24CA when system-level surge tests exceed IEC 61000-4-5 Level 4 and thermal mass permits larger package. |
Compared with SMAJ24CA and 1.5KE24CA, SA24CHE3/54 uniquely combines AEC-Q101 qualification, DO-15 form factor, and precise 500 W/38.9 V clamping-making it optimal for space-constrained automotive and industrial control modules needing certified reliability.
Availability
SA24CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and 24 V DC power rail clamping requiring stable component supply and long-term lifecycle assurance.
Supply support for SA24CHE3/54 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxCH series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, bi-directional transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure where AEC-Q101 validation and stable clamping are mandatory.
FAQ
What is the polarity configuration of SA24CHE3/54?
The SA24CHE3/54 is a bi-directional TVS diode with symmetrical terminals-no cathode marking is present. This allows it to protect against positive and negative transients equally, eliminating orientation concerns during placement and simplifying design for AC-coupled or differential signal paths. Its behavior matches the SA24CA designation in Vishay's documentation.
Does SA24CHE3/54 meet automotive qualification standards?
Yes, SA24CHE3/54 carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation (Rev. 18-Sep-12, Doc. #88378). It has passed stress tests including high-temperature reverse bias, temperature cycling, and ESD, making it suitable for automotive body control modules, sensor hubs, and infotainment power domains.
What is the maximum clamping voltage of SA24CHE3/54 at rated peak pulse current?
The maximum clamping voltage (VC) of SA24CHE3/54 is 38.9 V at its rated peak pulse current (IPPM) of 12.9 A under the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream IC voltage stress analysis in 24 V system designs.
Can SA24CHE3/54 be used in place of a unidirectional TVS like SA24A?
No-SA24CHE3/54 is bi-directional and lacks polarity marking, whereas SA24A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: SA24CHE3/54 suits AC, differential, or floating-rail applications; SA24A is for DC rails where forward conduction must be blocked. Their VBR and VC values also differ slightly per datasheet tables.
What packaging and reel configuration does SA24CHE3/54 ship in?
SA24CHE3/54 ships in 13" diameter paper tape and reel format with a base quantity of 4000 units per reel (ordering code /54). The device uses DO-204AC (DO-15) axial package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
SA24CHE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 11.6A
- 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)
SA24CHE3/54 FAQ
1.How can I place an order for SA24CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA24CHE3/54 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 SA24CHE3/54 reliable?
The price and inventory of SA24CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA24CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA24CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA24CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA24CHE3/54?
SA24CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA24CHE3/54 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 SA24CHE3/54?
For technical support, including SA24CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA24CHE3/54 requirements.
6.How does Aetrix verify that SA24CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA24CHE3/54 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 SA24CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA24CHE3/54?
All SA24CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA24CHE3/54, 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 SA24CHE3/54 part is unused and in its original packaging.
Return procedure for SA24CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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