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Vishay General Semiconductor - Diodes Division SMBJ188AHE3/52
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- Part No.:
- SMBJ188AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ188AHE3/52.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,264
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Product details
Overview
SMBJ188AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 188 V stand-off voltage (VWM), 209–231 V breakdown voltage (VBR) at 1 mA, 328 V maximum clamping voltage (VC) at 2.0 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the SMBJ188AHE3/52 datasheet, SMBJ188AHE3/52 pinout, SMBJ188AHE3/52 application, or SMBJ188AHE3/52 equivalent, key selection criteria include clamping performance under 2.0 A surge, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, unidirectional polarity marking, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (209–231 V), it avalanches to divert transient energy away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response (<1 ns), critical for protecting high-voltage analog front-ends and gate drivers.
The device is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and supports peak forward surge current (IFSM) up to 100 A (8.3 ms half-sine). Junction temperature range spans −55 °C to +150 °C, with thermal resistance from junction-to-ambient at 100 °C/W - requiring careful PCB copper pad design per Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 200 V nominal systems. |
| VBR (min/max) | 209 V / 231 V at IT = 1 mA - tight 10.5% tolerance ensures predictable turn-on across production lots. |
| VC @ IPPM | 328 V at 2.0 A - clamping voltage during 10/1000 µs surge; limits stress on protected 250 V-rated MOSFETs or op-amps. |
| PPPM | 600 W - peak pulse power handling with standard 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves efficiency in high-impedance bias networks and sensor references. |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and enclosed industrial enclosures without derating. |
| RθJA | 100 °C/W - thermal resistance requires ≥5.0 mm × 5.0 mm copper pads per terminal for full 5.0 W steady-state dissipation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes shunt conduction loop. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood applications including engine control modules and battery management systems. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 (260 °C reflow) | Supports lead-free soldering without preconditioning; compatible with standard SMT assembly lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive 200 V-class SiC gate drivers. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of 200 V DC bus against switching transients from IGBT commutation and inductive load kickback. IC Role / Device Role / Timing Role: Shunt TVS diode placed across DC link capacitor to clamp voltage spikes to ≤328 V. Use Value: Prevents destructive overvoltage on 250 V-rated electrolytic capacitors and gate drivers, extending system lifetime. |
Use Scenario: Input-stage surge suppression on 176–264 VAC rectified outputs feeding isolated DC/DC converters. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk capacitor input, triggered within <1 ns of transient onset. Use Value: Maintains converter regulation during IEC 61000-4-5 Level 3 (2 kV line-earth) surges without latch-up or degradation. |
| Automotive Battery Management | High-Voltage Sensor Interfaces |
|
Use Scenario: Protection of BMS cell monitoring ICs connected to 192 V Li-ion battery stacks in EV traction packs. IC Role / Device Role / Timing Role: Unidirectional TVS on each cell tap line, referenced to pack ground. Use Value: Survives repeated load-dump pulses per ISO 7637-2 while maintaining <1 µA leakage at 188 V bias. |
Use Scenario: Guarding precision ADC inputs in HV isolation amplifiers measuring 150–200 V bus voltages. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) shunt clamp on differential sense lines upstream of isolation barrier. Use Value: Limits transient-induced offset error and prevents latch-up in 24-bit delta-sigma converters during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ188A-M3/52 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU automotive Tier 1). | Choose SMBJ188A-M3/52 if halogen-free bill-of-materials is required; otherwise SMBJ188AHE3/52 offers same performance with standard RoHS compliance. |
| SMCJ188AHE3/52 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher RθJA (60 °C/W) and 1500 W PPPM rating. | Used where higher surge energy absorption is needed (e.g., outdoor telecom cabinets), but requires larger PCB footprint. | Select SMBJ188AHE3/52 for space-constrained designs needing 600 W protection; choose SMCJ188AHE3/52 only if >1 kW surge margin is required and board area permits. |
Compared with SMBJ188A-M3/52, the HE3/52 variant offers identical protection performance with standard RoHS compliance; versus SMCJ188AHE3/52, it trades lower surge capacity for 40% smaller PCB area and tighter thermal coupling to copper pads.
Availability
SMBJ188AHE3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive battery management systems requiring stable component supply, AEC-Q101 validation, and consistent 188 V stand-off performance.
Supply support for SMBJ188AHE3/52 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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-power density.
The SMBJ series delivers standardized 600 W transient suppression in compact SMB packages, engineered specifically for cost-sensitive, high-volume applications demanding AEC-Q101 compliance and repeatable clamping behavior across temperature.
FAQ
What is the clamping voltage of SMBJ188AHE3/52 at its rated peak pulse current?
The SMBJ188AHE3/52 has a maximum clamping voltage (VC) of 328 V at 2.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ188AHE3/52 maintains this clamping performance across its full operating temperature range, ensuring consistent protection margin for 200 V-class components.
Is SMBJ188AHE3/52 qualified for automotive applications?
Yes, SMBJ188AHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88392. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge robustness - making SMBJ188AHE3/52 suitable for under-hood automotive systems such as battery management units and engine control modules where reliability under harsh conditions is mandatory.
What is the reverse leakage current specification for SMBJ188AHE3/52 at its stand-off voltage?
The SMBJ188AHE3/52 specifies a maximum reverse leakage current (ID) of 1.0 µA at its 188 V stand-off voltage (VWM), tested at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensing paths and minimizes standby power loss in always-on automotive subsystems. The SMBJ188AHE3/52 maintains leakage below 5 µA even at +125 °C, supporting stable operation across extended temperature ranges.
How does the thermal resistance of SMBJ188AHE3/52 affect PCB layout?
The SMBJ188AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, which assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To achieve rated 5.0 W power dissipation, designers must allocate sufficient copper area and consider internal layer heatsinking. Failure to meet this layout requirement causes excessive junction temperature rise, reducing surge endurance and accelerating parametric drift in the SMBJ188AHE3/52.
What packaging and reel options are available for SMBJ188AHE3/52?
SMBJ188AHE3/52 is supplied in 7" diameter plastic tape and reel format with a base quantity of 750 units per reel (ordering code suffix /52). It uses industry-standard SMB (DO-214AA) packaging with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. The SMBJ188AHE3/52 reel configuration supports high-speed pick-and-place assembly and meets MSL Level 1 moisture sensitivity requirements for lead-free reflow.
SMBJ188AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- 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)
SMBJ188AHE3/52 FAQ
1.How can I place an order for SMBJ188AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ188AHE3/52 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 SMBJ188AHE3/52 reliable?
The price and inventory of SMBJ188AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ188AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ188AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ188AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ188AHE3/52?
SMBJ188AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ188AHE3/52 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 SMBJ188AHE3/52?
For technical support, including SMBJ188AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ188AHE3/52 requirements.
6.How does Aetrix verify that SMBJ188AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ188AHE3/52 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 SMBJ188AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ188AHE3/52?
All SMBJ188AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ188AHE3/52, 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 SMBJ188AHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ188AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ188AHE3/52 Tags
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