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Vishay General Semiconductor - Diodes Division SMBJ170CHE3/52
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- Part No.:
- SMBJ170CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ170CHE3/52.pdf
- Description:
- TVS DIODE 170VWM 304VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,709
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Product details
Overview
SMBJ170CHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 170 V stand-off voltage (VWM), 189–209 V breakdown voltage (VBR) at 1 mA, 2.2 A maximum reverse leakage at VWM, 275 V clamping voltage (VC) at 2.2 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in industrial motor drives and telecom interface circuits.
For engineers reviewing the SMBJ170CHE3/52 datasheet, SMBJ170CHE3/52 pinout, SMBJ170CHE3/52 application, or SMBJ170CHE3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping behavior under surge, and direct alternative part comparisons - all aligned to Vishay's 88392 specification revision (Jan 2024).
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (189–209 V). Its low incremental surge resistance and sub-nanosecond response time enable effective suppression of fast transients induced by inductive switching or ESD events.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), it delivers 600 W peak pulse power handling per JEDEC-standard 10/1000 µs waveform, with derating above 25 °C ambient per Fig. 2 and thermal resistance RθJA = 100 °C/W (typical).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 189–209 V at IT = 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 275 V at IPPM = 2.2 A - Peak voltage seen by protected circuit during full-rated 10/1000 µs surge; determines downstream component stress. |
| IPPM (Peak Pulse Current) | 2.2 A - Maximum non-repetitive surge current supported at rated waveform; directly tied to PCB pad layout and thermal design. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy absorption capability under standardized 10/1000 µs test condition; validates suitability for IEC 61000-4-5 Level 3/4 threats. |
| RθJA (Junction-to-Ambient) | 100 °C/W - Thermal resistance defining junction temperature rise per watt dissipated; critical for reliability in enclosed or high-ambient environments. |
| TJ max. | 150 °C - Absolute maximum junction temperature; sets upper limit for thermal design margin in sustained surge or high-duty-cycle applications. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked with cathode band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to system ground or lower-potential rail; establishes reference for clamping action during positive transients on cathode side. |
| Cathode | Protected line connection / Surge current sink | Connected to line being protected (e.g., 170 V DC bus); conducts surge current to anode during overvoltage, limiting voltage to ≤275 V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - enables use in engine control units and ADAS power supplies. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5-compliant surge immunity up to 1 kV open-circuit / 0.5 kA short-circuit for industrial equipment interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during clamping - reduces stress on downstream MOSFETs, gate drivers, and ADC front-ends. |
| MSL Level 1 (J-STD-020) | Compatible with standard reflow profiles up to 260 °C peak - eliminates pre-bake requirements and supports high-yield automated assembly. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage performance across temperature and lifetime - critical for field-deployed telecom infrastructure. |
Applications
| Industrial Motor Drive DC Bus Protection | Telecom Line Interface Surge Suppression |
|---|---|
Use Scenario: Protecting 170 V nominal DC link in servo drive inverters from inductive kickback during IGBT switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and ground to clamp voltage spikes exceeding 170 V. Use Value: Limits transient voltage to ≤275 V, preventing gate oxide damage to 200 V-rated IGBTs and maintaining functional safety compliance. |
Use Scenario: Safeguarding RS-485 transceiver inputs on base station backhaul modules exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on differential pair lines referenced to local ground plane. Use Value: Clamps common-mode surges within 1 ns, preserving signal integrity and avoiding latch-up in ±10 V tolerant transceivers. |
| Automotive Body Control Module Power Input | Renewable Energy Inverter DC Link Monitoring |
Use Scenario: Securing 12 V–170 V wide-input buck converter input in BCMs subjected to load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail upstream of PMIC. Use Value: Absorbs 600 W surge energy without degradation, meeting AEC-Q101 stress requirements and enabling single-stage protection architecture. |
Use Scenario: Protecting voltage sense circuitry monitoring 170 V DC output of solar microinverters during grid fault conditions. IC Role / Device Role / Timing Role: High-VWM TVS across precision resistor divider to prevent ADC saturation. Use Value: Maintains <2.2 µA leakage at 170 V, avoiding measurement offset drift while surviving repetitive 100 V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170AHE3/52 | Same VWM, VBR, VC, and PPPM; identical AEC-Q101 qualification and SMB package; differs only in suffix coding (HE3 vs. HE3/52 denotes tape-and-reel packaging variant). | No functional difference; both support same surge ratings and thermal profiles. | Select SMBJ170AHE3/52 if sourcing from alternate reel size (e.g., 3200-unit 13" reel) or distributor inventory preference. |
| SMCJ170AHE3/52 | Same electrical specs but SMC (DO-214AB) package: 7.11 mm × 6.22 mm footprint, 50 % larger area, 30 % lower RθJA (70 °C/W), higher IPPM (3.5 A). | Better thermal performance and surge margin; requires PCB layout change due to larger pad pattern and pitch. | Choose SMCJ170AHE3/52 when board space allows and higher surge endurance (>2.2 A) or improved thermal headroom is required. |
Compared with SMBJ170CHE3/52, SMBJ170AHE3/52 offers identical protection performance in a functionally interchangeable reel format, while SMCJ170AHE3/52 provides enhanced surge capacity and thermal derating at the cost of increased footprint - making it suitable for high-reliability or high-power-density designs where layout revision is feasible.
Availability
SMBJ170CHE3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, automotive body control modules, and renewable energy inverter monitoring systems requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production lots.
Supply support for SMBJ170CHE3/52 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in compact surface-mount formats, targeting automotive, industrial, and telecom systems where space-constrained, high-clamping-ratio protection is essential.
FAQ
What is the clamping voltage of SMBJ170CHE3/52 at its rated peak pulse current?
The SMBJ170CHE3/52 has a maximum clamping voltage (VC) of 275 V at its rated peak pulse current (IPPM) of 2.2 A, measured using the standard 10/1000 µs double-exponential waveform. This value defines the highest voltage the protected circuit will experience during a full-rated surge event, ensuring compatibility with 300 V-rated downstream components. The SMBJ170CHE3/52 maintains this clamping performance across its qualified temperature range (–55 °C to +150 °C).
Is SMBJ170CHE3/52 AEC-Q101 qualified, and what does that cover?
Yes, SMBJ170CHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88392 (Rev. Jan 2024). This qualification covers stress tests including temperature cycling, highly accelerated stress test (HAST), mechanical shock, and solder heat resistance - validating reliability for automotive power electronics such as body control modules and ADAS power supplies. The SMBJ170CHE3/52 meets these requirements in its SMB (DO-214AA) package with matte tin terminations.
How does the SMBJ170CHE3/52 differ from the bidirectional SMBJ170CHE3/52CA variant?
The SMBJ170CHE3/52 is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where surge direction is known (e.g., positive rail to ground). The "CA" suffix denotes a bidirectional version (e.g., SMBJ170CHE3/52CA), which lacks polarity marking and clamps symmetrically in both directions - suitable for AC lines or differential signals. Electrical specs like VWM, VBR, and VC differ: SMBJ170CHE3/52CA has VWM = 170 V (peak), VBR = 189–209 V (bidirectional), and same PPPM, but no forward voltage rating. The SMBJ170CHE3/52 is not interchangeable with CA variants without circuit redesign.
What is the maximum reverse leakage current for SMBJ170CHE3/52 at its stand-off voltage?
The SMBJ170CHE3/52 exhibits a maximum reverse leakage current (ID) of 2.2 µA at its rated stand-off voltage (VWM) of 170 V and ambient temperature of 25 °C, per Vishay datasheet 88392. This low leakage ensures minimal power loss and avoids measurement errors in high-impedance sensing circuits - critical for voltage monitor ICs or precision divider networks. Leakage remains below 5 µA up to 125 °C, supporting stable operation in thermally demanding enclosures.
Can SMBJ170CHE3/52 be used in place of SMBJ150AHE3/52 for higher-voltage protection?
Yes, SMBJ170CHE3/52 can replace SMBJ150AHE3/52 where system operating voltage increases from 150 V to 170 V nominal, provided the protected circuit's voltage rating accommodates the higher clamping voltage (275 V vs. 243 V for SMBJ150A). Both share identical package, thermal profile, and AEC-Q101 qualification. However, the SMBJ170CHE3/52 has lower peak pulse current (2.2 A vs. 2.5 A) and slightly higher VC, so verify surge energy alignment with IEC 61000-4-5 test levels before substitution. The SMBJ170CHE3/52 is not a drop-in replacement without validation.
SMBJ170CHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ170CHE3/52 FAQ
1.How can I place an order for SMBJ170CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ170CHE3/52 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 SMBJ170CHE3/52 reliable?
The price and inventory of SMBJ170CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ170CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ170CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ170CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ170CHE3/52?
SMBJ170CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ170CHE3/52 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 SMBJ170CHE3/52?
For technical support, including SMBJ170CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ170CHE3/52 requirements.
6.How does Aetrix verify that SMBJ170CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ170CHE3/52 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 SMBJ170CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ170CHE3/52?
All SMBJ170CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ170CHE3/52, 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 SMBJ170CHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ170CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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