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Vishay General Semiconductor - Diodes Division SA15CHE3/54
- Part No.:
- SA15CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA15CHE3/54.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,086
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Product details
Overview
SA15CHE3/54 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), and 20.5 A peak pulse current (IPPM). It provides clamping protection for signal lines in automotive sensor units and industrial control interfaces.
For engineers reviewing the SA15CHE3/54 datasheet, SA15CHE3/54 pinout, SA15CHE3/54 application, or SA15CHE3/54 equivalent, this AEC-Q101 qualified TVS offers verified bi-directional surge suppression with low clamping voltage (24.4 V at IPPM), RoHS-compliant matte tin leads, and UL 94 V-0 molded epoxy packaging - critical for ESD and inductive-switching transient mitigation in harsh environments.
Technical Context
The SA15CHE3/54 operates as a bi-directional avalanche diode, symmetrically clamping transients above ±16.7 V in both polarities. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling consistent response to repetitive 10/1000 μs waveforms at 0.01 % duty cycle.
Designed for automotive-grade reliability, it supports operating junction temperatures from –55 °C to +175 °C and meets JESD 201 Class 2 whisker resistance. The device exhibits no polarity marking - consistent with bi-directional construction - and delivers 24.4 V clamping at 20.5 A, with temperature coefficient of +0.016 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry |
| VBR (min/max) | 16.7 V / 18.5 V - guaranteed avalanche onset range at 1 mA test current; ensures predictable turn-on under surge |
| VC @ IPPM | 24.4 V - clamped voltage at 20.5 A peak pulse; limits downstream voltage stress during transient events |
| PPPM | 500 W - peak power dissipation capability with 10/1000 μs waveform; sustains high-energy surges without failure |
| ID @ VWM | 1.0 μA - ultra-low leakage at rated stand-off; prevents signal distortion or bias shift in high-impedance circuits |
| TJ max. | +175 °C - extended junction temperature rating; enables use in under-hood automotive and industrial motor drive environments |
| AEC-Q101 | Qualified - validated for automotive electronics per stress-test requirements including HTOL, TC, and HAST |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Bi-directional terminal | Functions identically as cathode in reverse bias; no polarity marking required for symmetric operation |
| Cathode (Lead 2) | Bi-directional terminal | Functions identically as anode in reverse bias; terminals interchangeable due to symmetrical avalanche structure |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates surface degradation under humidity or bias stress |
| 500 W peak pulse power (10/1000 μs) | Withstands high-energy transients from inductive load switching without thermal runaway or parametric shift |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation essential for safety-critical systems in enclosed enclosures |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance; suitable for high-reliability solder joints in vibration-prone environments |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus signal lines in wheel speed or temperature sensors exposed to load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional clamping element placed across differential pair or single-ended line to limit transient voltage swing. Use Value: Clamps 24.4 V at 20.5 A, preventing damage to upstream transceivers while maintaining signal integrity below 15 V nominal operation. | Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers subjected to relay-coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Standoff protector on field-side interface, absorbing repetitive 500 W surges without degradation over 10⁵ cycles. Use Value: Enables >175 °C junction operation and AEC-Q101 reliability margin, supporting extended service life in uncooled control cabinets. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceiver pins in base station backhaul equipment against lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary front-end TVS on data line, coordinated with secondary GDT or MOV for staged energy handling. Use Value: Low 1.0 μA leakage preserves receiver sensitivity; fast avalanche response (<1 ns) prevents data corruption during sub-microsecond transients. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards during direction reversal. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge outputs to clamp inductive kickback. Use Value: 500 W rating handles repeated 10/1000 μs pulses from motor switching; DO-15 package allows manual or automated through-hole assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Same VWM (15 V), lower PPPM (400 W), SMA package (surface-mount), higher VC (24.4 V identical) | Requires PCB rework for SMT layout; lacks AEC-Q101 qualification; suited for space-constrained consumer designs | Select when board area is limited and automotive qualification is not required |
| P6SMB15CA | Same VWM (15 V), identical PPPM (600 W), DO-214AA package, slightly higher VBR (16.7–18.5 V same), VC = 24.4 V | Larger footprint than DO-15; higher IFSM (100 A); intended for higher-energy industrial surge environments | Select when higher surge current margin or legacy DO-214AA compatibility is needed |
Compared with SMAJ15CA and P6SMB15CA, the SA15CHE3/54 uniquely combines AEC-Q101 qualification, DO-15 through-hole compatibility, and precise 20.5 A IPPM rating - making it optimal for automotive and industrial through-hole designs requiring certified reliability without layout change.
Availability
SA15CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply and long-term lifecycle support.
Supply support for SA15CHE3/54 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 TVS devices with emphasis on reliability, power handling, and automotive qualification.
The SAxxCH series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust bi-directional transient suppression in automotive, industrial, and telecom systems where AEC-Q101 compliance and high pulse power are mandatory.
FAQ
What is the clamping voltage of the SA15CHE3/54 at its rated peak pulse current?
The SA15CHE3/54 has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPPM) of 20.5 A, measured using the standard 10/1000 μs waveform. This value ensures protected circuits remain within safe voltage limits during surge events. The SA15CHE3/54 maintains this clamping performance across its full operating temperature range and after repeated transient exposure.
Is the SA15CHE3/54 suitable for automotive applications?
Yes, the SA15CHE3/54 is AEC-Q101 qualified and explicitly designed for automotive use. Its construction - including glass-passivated junction, UL 94 V-0 epoxy, and JESD 201 Class 2 whisker resistance - meets stringent automotive reliability requirements. The SA15CHE3/54 is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where transient immunity is critical.
How does the bi-directional configuration of the SA15CHE3/54 affect its mounting and usage?
The SA15CHE3/54 has no polarity marking and functions identically in both directions, eliminating orientation concerns during placement. This symmetry simplifies PCB layout and assembly, especially in differential or AC-coupled signal paths. Unlike uni-directional TVS diodes, the SA15CHE3/54 requires no cathode band alignment - a key advantage in high-volume automotive manufacturing where misorientation risks must be eliminated.
What is the maximum steady-state power dissipation for the SA15CHE3/54?
The SA15CHE3/54 has a maximum steady-state power dissipation (PD) of 3.0 W when mounted on an infinite heatsink at lead temperature (TL) of 75 °C. Derating applies above 25 °C ambient, per the published derating curve. This rating governs continuous power handling - distinct from its 500 W peak pulse capability - and informs thermal design for sustained leakage or low-duty-cycle surge conditions involving the SA15CHE3/54.
Does the SA15CHE3/54 meet RoHS and halogen-free requirements?
Yes, the SA15CHE3/54 carries the HE3 suffix, indicating RoHS compliance per Directive 2011/65/EU and halogen-free status per JEDEC JS709A. Its matte tin-plated leads satisfy J-STD-002 solderability, and the molding compound is UL 94 V-0 rated. These attributes make the SA15CHE3/54 suitable for environmentally regulated markets including EU automotive and industrial equipment.
SA15CHE3/54 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- 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)
SA15CHE3/54 FAQ
1.How can I place an order for SA15CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA15CHE3/54 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 SA15CHE3/54 reliable?
The price and inventory of SA15CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA15CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA15CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA15CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA15CHE3/54?
SA15CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA15CHE3/54 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 SA15CHE3/54?
For technical support, including SA15CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA15CHE3/54 requirements.
6.How does Aetrix verify that SA15CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA15CHE3/54 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 SA15CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA15CHE3/54?
All SA15CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA15CHE3/54, 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 SA15CHE3/54 part is unused and in its original packaging.
Return procedure for SA15CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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