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Vishay General Semiconductor - Diodes Division 1.5SMC170AHE3_A/H
- Part No.:
- 1.5SMC170AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC170AHE3_A/H.pdf
- Description:
- TVS DIODE 145VWM 234VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,615
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Product details
Overview
1.5SMC170AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 170 V breakdown voltage (VBR min = 162 V, max = 179 V), 145 V standoff voltage (VWM), 234 V clamping voltage (VC) at 6.4 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the 1.5SMC170AHE3_A/H datasheet, 1.5SMC170AHE3_A/H pinout, 1.5SMC170AHE3_A/H application, or 1.5SMC170AHE3_A/H equivalent, this device serves as a high-reliability, surface-mount TVS for protecting automotive ECUs, industrial motor drives, and telecom interface circuits against lightning surges and inductive switching transients.
Technical Context
The 1.5SMC170AHE3_A/H operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient events and low incremental surge resistance. Its SMC (DO-214AB) package supports automated placement and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
It delivers 1500 W peak pulse power under standardized 10/1000 µs waveform conditions, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads). The device is rated for -65 °C to +150 °C operating junction temperature and exhibits a VBR temperature coefficient of 0.108 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 162 V / 179 V - Ensures reliable avalanche conduction onset within tight tolerance for predictable clamping behavior |
| VWM | 145 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC blocking range |
| VC @ IPPM | 234 V at 6.4 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected IC or MOSFET |
| PPPM | 1500 W - Peak transient power handling capability; enables protection against severe lightning-induced surges (IEC 61000-4-5) |
| IFSM | 200 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports protection of power rails during load dump events |
| TJ max | +150 °C - High-temperature operation support for under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., ground or return path); defines unidirectional conduction direction |
| Cathode | Avalanche conduction terminal / Surge current sink | Connected to protected line (e.g., 12 V rail or CAN_H); conducts surge current to ground during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime and temperature; improves long-term reliability vs. epoxy-passivated alternatives |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect field performance |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts), improving protection margin for sensitive gate drivers |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive Interface |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power inputs in engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before LDOs or DC-DC converters. Use Value: Withstands 200 A surge (8.3 ms) and clamps to 234 V, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Safeguarding RS-485/RS-422 communication lines in variable frequency drives exposed to ground potential differences and switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable layout (though 1.5SMC170AHE3_A/H is unidirectional, used with complementary pair or in single-rail configurations) across differential pairs or shielded signal returns. Use Value: 1500 W rating absorbs repetitive transients from nearby contactor switching, maintaining data integrity without latch-up. |
| Telecom Line Card Surge Protection | Consumer Appliance Power Input Stage |
|
Use Scenario: Front-end protection on AC/DC adapter inputs in base station remote radio units subjected to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device mounted directly at connector entry point, coordinated with MOVs and gas discharge tubes in multi-stage architecture. Use Value: Fast <1 ns response and 234 V clamping limit ensure semiconductor-level protection before secondary suppression elements activate. |
Use Scenario: Overvoltage safeguard on main SMPS input in smart home hubs and HVAC controllers operating in noisy residential grids. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-line, suppressing line-to-ground surges induced by nearby appliance switching. Use Value: AEC-Q101 qualification provides extended lifetime assurance beyond commercial-grade alternatives in thermally stressed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A-E3/52 | Lower PPPM (600 W), same VWM/VBR, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients (e.g., IEC 61000-4-4 EFT only); not suitable for lightning-level threats | Select when board space is constrained and surge threat level is defined as ≤1 kV/2 Ω IEC 61000-4-5 |
| 1.5KE170A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Not suitable for automated SMT production or automotive under-hood environments due to packaging and qualification gaps | Choose only for legacy through-hole designs or non-automotive industrial prototypes where reflow compatibility is irrelevant |
Compared with SMBJ170A-E3/52 and 1.5KE170A, the 1.5SMC170AHE3_A/H uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and SMC surface-mount compatibility-making it the only option qualified for high-reliability automotive power rail protection with full SMT manufacturability.
Availability
1.5SMC170AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and telecom infrastructure requiring stable component supply, AEC-Q101 compliance, and high-energy transient immunity.
Supply support for 1.5SMC170AHE3_A/H 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, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where compact size, surge robustness, and qualification rigor are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC170AHE3_A/H under maximum surge conditions?
The 1.5SMC170AHE3_A/H has a maximum clamping voltage (VC) of 234 V at 6.4 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The 1.5SMC170AHE3_A/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is the 1.5SMC170AHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC170AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026). It undergoes stress testing for temperature cycling, highly accelerated life testing (HALT), and ESD per AEC-Q101 requirements. The 1.5SMC170AHE3_A/H is approved for use in engine control units, body electronics, and ADAS modules where sustained reliability under thermal and mechanical stress is critical.
What package type does the 1.5SMC170AHE3_A/H use, and what are its mounting requirements?
The 1.5SMC170AHE3_A/H uses the SMC (DO-214AB) surface-mount package, with dimensions of 7.75 mm × 6.22 mm × 2.62 mm and a cathode band marking polarity. Per Vishay's recommended layout, it must be mounted on 8.0 mm × 8.0 mm copper pads per terminal to achieve rated 1500 W pulse power. The device meets MSL Level 1 and supports lead-free reflow up to 260 °C peak, eliminating pre-bake requirements.
How does the 1.5SMC170AHE3_A/H differ from bidirectional variants like 1.5SMC170CA?
The 1.5SMC170AHE3_A/H is unidirectional, meaning it conducts surge current only from cathode to anode (reverse bias), with polarity marked by a band. In contrast, 1.5SMC170CA is bidirectional and symmetrical-clamping in both directions with no polarity marking. The 1.5SMC170AHE3_A/H is selected for DC power rail protection (e.g., 12 V input), while 1.5SMC170CA suits AC lines or differential signals where polarity reversal occurs. Electrical parameters (VBR, VC, PPPM) are otherwise matched.
What is the maximum operating temperature and thermal resistance of the 1.5SMC170AHE3_A/H?
The 1.5SMC170AHE3_A/H has a maximum junction temperature (TJ) of +150 °C and a typical thermal resistance of 75 °C/W (junction-to-ambient) when mounted on minimum recommended pad layout, and 15 °C/W (junction-to-leads). These values are specified in the Thermal Characteristics table of Vishay document 88303. Derating curves (Figure 2) show that at 100 °C ambient, the device retains ~60% of its 1500 W pulse rating-critical for under-hood automotive deployment.
1.5SMC170AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC170AHE3_A/H FAQ
1.How can I place an order for 1.5SMC170AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC170AHE3_A/H 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 1.5SMC170AHE3_A/H reliable?
The price and inventory of 1.5SMC170AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC170AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC170AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC170AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC170AHE3_A/H?
1.5SMC170AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC170AHE3_A/H 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 1.5SMC170AHE3_A/H?
For technical support, including 1.5SMC170AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC170AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC170AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC170AHE3_A/H 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 1.5SMC170AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC170AHE3_A/H?
All 1.5SMC170AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC170AHE3_A/H, 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 1.5SMC170AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC170AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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