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Vishay General Semiconductor - Diodes Division SA170CHE3/54
- Part No.:
- SA170CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA170CHE3/54.pdf
- Description:
- TVS DIODE 170VWM 304VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,460
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Product details
Overview
SA170CHE3/54 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for robust overvoltage protection of sensitive electronics. It features a 170 V stand-off voltage (VWM), 209 V minimum breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), 275 V maximum clamping voltage at 1.8 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA170CHE3/54 datasheet, SA170CHE3/54 pinout, SA170CHE3/54 application, or SA170CHE3/54 equivalent, this device is selected for high-energy transient suppression in automotive power lines, industrial sensor interfaces, and telecom signal conditioning where bidirectional surge immunity and lead-free, whisker-resistant terminations are required.
Technical Context
The SA170CHE3/54 operates as a bi-directional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 μA at 170 V), while the DO-204AC package supports 275 °C solder dip per JESD 22-B106.
It delivers 500 W peak pulse power under standardized 10/1000 μs waveform conditions with 0.01% duty cycle, and maintains clamping performance across -55 °C to +175 °C operating junction temperature range. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (min) | 189 V - Minimum breakdown voltage at 1 mA test current; ensures reliable triggering above normal operating voltage. |
| VBR (max) | 209 V - Maximum breakdown voltage at 1 mA; guarantees tight VBR distribution for predictable protection threshold. |
| VC @ IPPM | 275 V - Clamping voltage at 1.8 A peak pulse current; limits transient energy delivered to downstream components. |
| PPPM | 500 W - Peak pulse power handling (10/1000 μs); enables suppression of high-energy surges like ISO 7637-2 Pulse 5a. |
| ID @ VWM | <1.0 μA - Reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
Pinout & Package
Package: DO-204AC (DO-15), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads, RoHS-compliant, AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bi-directional) | Transient conduction path | No polarity marking; symmetric terminals enable bidirectional clamping without orientation dependency during PCB placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature, with low parameter drift and high reliability in harsh environments. |
| AEC-Q101 qualification (HE3) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| 500 W peak pulse power (10/1000 μs) | Withstands high-energy transients such as load dump and inductive switching spikes without degradation. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, critical for long-life automotive and industrial deployments. |
| UL 94 V-0 compliant molding compound | Provides flame-retardant encapsulation essential for safety-critical systems in transportation and infrastructure. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle power rails against ISO 7637-2 load dump and alternator surge events. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between battery rail and ECU input stage. Use Value: Limits transient voltage to ≤275 V during 500 W surges, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Fast-response TVS on 4–20 mA or 0–10 V signal lines exposed to ESD and field wiring transients. Use Value: Sub-1 ns response time and <1.0 μA leakage preserve signal integrity while absorbing ±1 kV ESD per IEC 61000-4-2. |
| Telecom Signal Line Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding RS-485/RS-232 transceivers in base station backhaul equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Bi-directional clamping element on differential data lines referenced to local ground. Use Value: Symmetrical clamping ensures equal protection for both signal polarities, maintaining common-mode noise rejection. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., washing machine drive circuits). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to absorb flyback energy during PWM switching. Use Value: 175 °C max junction temperature allows mounting near heat-generating motor drivers without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170CA | Same VWM (170 V) and bi-directional configuration, but lower PPPM (400 W) and higher VC (277 V); SMA package (smaller footprint, lower thermal mass). | Limited to lower-energy transients; unsuitable for full ISO 7637-2 Pulse 5a compliance without parallel staging. | Select SMAJ170CA only when board space is constrained and peak surge energy remains below 400 W. |
| 1.5KE170CA | Higher PPPM (1500 W), same VWM and bi-directionality, but larger DO-201AD package and higher VF; not AEC-Q101 qualified. | Supports heavier industrial surges but lacks automotive qualification and has longer lead time due to legacy packaging. | Choose 1.5KE170CA for non-automotive high-power surge zones where AEC-Q101 is not mandated. |
Compared with SMAJ170CA and 1.5KE170CA, the SA170CHE3/54 uniquely balances 500 W surge capability, AEC-Q101 qualification, DO-15 manufacturability, and JESD 201 Class 2 whisker resistance-making it optimal for automotive Tier-1 suppliers requiring traceable, high-reliability TVS devices.
Availability
SA170CHE3/54 is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, and telecom signal line protection requiring stable component supply, full AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for SA170CHE3/54 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 passive components with emphasis on reliability, precision, and automotive-grade qualification.
The SA170CHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where bidirectional clamping, AEC-Q101 compliance, and long-term stability are mandatory.
FAQ
What is the clamping voltage of the SA170CHE3/54 at its rated peak pulse current?
The SA170CHE3/54 exhibits a maximum clamping voltage (VC) of 275 V at its specified peak pulse current (IPPM) of 1.8 A under 10/1000 μs waveform conditions. This value is measured across the device terminals during transient suppression and defines the upper voltage limit imposed on protected circuitry during surge events. The SA170CHE3/54 maintains this clamping performance consistently across its full operating temperature range.
Is the SA170CHE3/54 suitable for automotive applications?
Yes, the SA170CHE3/54 is explicitly AEC-Q101 qualified (denoted by the HE3 suffix), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its DO-204AC package, 175 °C maximum junction temperature, and JESD 201 Class 2 whisker resistance meet stringent automotive reliability requirements. The SA170CHE3/54 is designed for use in environments subject to thermal cycling, vibration, and high-energy transients.
What does the "HE3" suffix indicate in SA170CHE3/54?
Within the SA170CHE3/54 part number, the "HE3" suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" versions and confirms compliance with automotive stress testing standards including temperature cycling, humidity bias, and mechanical shock. The SA170CHE3/54 also meets RoHS requirements and UL 94 V-0 flammability standards per its datasheet specifications.
How does the SA170CHE3/54 differ from uni-directional variants like SA170A?
The SA170CHE3/54 is a bi-directional TVS diode with symmetrical breakdown and clamping characteristics in both polarities, whereas SA170A is uni-directional and features a cathode band marking. The SA170CHE3/54 has no polarity marking and is used where AC signals or floating references require protection without orientation constraints. Its VBR min/max (189–209 V) applies equally in either direction, unlike SA170A which specifies forward voltage (VF = 3.5 V) and IFSM (70 A) only.
What is the maximum reverse leakage current for the SA170CHE3/54 at its stand-off voltage?
The SA170CHE3/54 has a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 170 V and TA = 25 °C. This low leakage ensures minimal power loss in standby operation and prevents false triggering in high-impedance circuits. Leakage remains well-controlled across temperature, supporting reliable performance in industrial and automotive applications where ambient temperatures exceed 85 °C.
SA170CHE3/54 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):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 304V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- 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)
SA170CHE3/54 FAQ
1.How can I place an order for SA170CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA170CHE3/54 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 SA170CHE3/54 reliable?
The price and inventory of SA170CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA170CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA170CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA170CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA170CHE3/54?
SA170CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA170CHE3/54 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 SA170CHE3/54?
For technical support, including SA170CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA170CHE3/54 requirements.
6.How does Aetrix verify that SA170CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA170CHE3/54 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 SA170CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA170CHE3/54?
All SA170CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA170CHE3/54, 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 SA170CHE3/54 part is unused and in its original packaging.
Return procedure for SA170CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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