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Vishay General Semiconductor - Diodes Division SMBJ75CHE3/5B
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- Part No.:
- SMBJ75CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CHE3/5B.pdf
- Description:
- TVS DIODE 75VWM 134VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,048
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Product details
Overview
SMBJ75CHE3/5B 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 DC power rails and signal lines. It features a 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 121 V maximum clamping voltage (VC) at 5.0 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform-used to safeguard MOSFETs, ICs, and sensor interfaces in industrial motor drives.
For engineers reviewing the SMBJ75CHE3/5B datasheet, SMBJ75CHE3/5B pinout, SMBJ75CHE3/5B application, or SMBJ75CHE3/5B equivalent, key selection criteria include its AEC-Q101 qualification status, low incremental surge resistance, fast response time (<1 ns), and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads per JEDEC standard.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior under repetitive transients. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ max = 150 °C) support reliable operation in ambient temperatures up to +85 °C when mounted per recommended pad layout.
The SMBJ75CHE3/5B delivers precise voltage limiting with a ±5% VBR tolerance band and a temperature coefficient of 0.106 %/°C, enabling predictable clamping performance across automotive and industrial temperature ranges. It meets MSL Level 1 per J-STD-020 and is rated for 100 A non-repetitive forward surge current (IFSM) at 8.3 ms half-sine.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 75 V systems. |
| VBR (Breakdown Voltage) | 83.3–92.1 V at 1.0 mA - Avalanche onset range; ensures reliable triggering above normal operating voltage but below system damage threshold. |
| VC (Clamping Voltage) | 121 V at IPPM = 5.0 A - Peak voltage seen by protected circuit during 10/1000 µs transient; limits stress on downstream 100 V-rated components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform; supports IEC 61000-4-5 Level 3 compliance. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Negligible standby power loss and minimal impact on high-impedance sensor bias networks. |
| TJ max | 150 °C - Enables use in under-hood automotive ECUs and industrial power supplies without derating at full load. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, and polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional clamp configuration; enables low-VF path during surge. |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to protected line (e.g., 75 V rail); defines clamping direction and prevents reverse-bias failure in DC systems. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables direct use in ADAS and body control modules. |
| 600 W peak pulse power (10/1000 µs) | Supports repeated lightning-induced surges per ISO 7637-2 Pulse 1/2b without degradation; eliminates need for external series impedance in many cases. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage overshoot during fast transients-critical for protecting 80 V-rated MOSFETs and gate drivers in motor inverters. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns-reduces manufacturing yield risk. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift-essential for outdoor telecom and solar inverter applications. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 72 V DC bus against inductive kickback from solenoid valves and relay coils in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and ground to clamp negative-going transients within 1 ns. Use Value: Limits voltage excursion to ≤121 V, preventing gate oxide rupture in 100 V SiC MOSFETs and extending system MTBF by >3× vs. unprotected design. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from load dump and jump-start events in door module ECUs. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 12 V supply rail upstream of LDO regulator, triggered only during >75 V excursions. Use Value: Maintains <1 µA leakage at 13.5 V nominal, avoiding quiescent current penalty while surviving 35 V/60 s load dump per ISO 16750-2. |
| Telecom Power Feeds | Solar Inverter DC Link Monitoring |
|
Use Scenario: Overvoltage suppression on -48 V telecom rectifier outputs exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Cathode-to-rail configuration clamping positive transients relative to system ground in negative-ground architecture. Use Value: Withstands 600 W pulses without parameter shift, meeting Telcordia GR-1089-CORE Zone 3 requirements for central office equipment. |
Use Scenario: Protecting isolated voltage dividers and ADC inputs monitoring 600–1000 V DC link in string inverters during grid fault recovery. IC Role / Device Role / Timing Role: Secondary-stage TVS on scaled-down sense rail (e.g., 75 V derived via resistor divider) to prevent ADC saturation. Use Value: 121 V clamping ensures sensed signal remains within 0–3.3 V ADC input range even during 1 kV surge coupling through parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75AHE3/5B | Same electrical specs and AEC-Q101 qualification; differs only in packaging suffix notation (HE3 vs. HE3/5B denotes same reel size and tape format). | No functional difference; identical use in automotive and industrial designs requiring traceable AEC-Q101 parts. | Select SMBJ75AHE3/5B if procurement system requires explicit "A" suffix for unidirectional variant identification. |
| SMCJ75A-E3/5B | Higher 1500 W PPPM rating in larger SMC (DO-214AB) package; same VWM/VBR/VC but 2× thermal mass and 2.5× footprint area. | Better suited for high-energy surges (e.g., AC mains input stages); not drop-in due to incompatible pad layout and height. | Choose SMCJ75A-E3/5B only when system-level surge testing exceeds 600 W and PCB space allows larger package. |
Compared with SMBJ75AHE3/5B, the SMBJ75CHE3/5B offers identical protection performance in the same qualified grade and reel format; versus SMCJ75A-E3/5B, it trades peak energy handling for compactness and cost efficiency in space-constrained 75 V DC applications.
Availability
SMBJ75CHE3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and solar inverter DC link monitoring requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBJ75CHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and high-power handling.
The SMBJ series is engineered for robust transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ75CHE3/5B at its rated peak pulse current?
The SMBJ75CHE3/5B has a maximum clamping voltage (VC) of 121 V at 5.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper voltage limit imposed on the protected circuit during surge events-critical for ensuring downstream 100 V-rated components remain within safe operating area. The SMBJ75CHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ75CHE3/5B suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMBJ75CHE3/5B is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HE3" suffix) and documentation (Document Number 88392, Revision 09-Jan-2024). It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification to meet automotive reliability standards. The SMBJ75CHE3/5B is deployed in body control modules, ADAS sensors, and infotainment power supplies where failure modes must be rigorously controlled.
What does the "/5B" suffix indicate in SMBJ75CHE3/5B?
Per Vishay's ordering information table, the "/5B" suffix denotes packaging: 13-inch diameter plastic tape and reel containing 3200 units. This contrasts with "/52", which specifies 7-inch reels of 750 units. The "HE3" portion confirms RoHS-compliant, AEC-Q101-qualified commercial grade construction. The SMBJ75CHE3/5B thus combines automotive-grade reliability with high-volume SMT-ready packaging for automated manufacturing lines.
How does SMBJ75CHE3/5B compare to bidirectional variants like SMBJ75CHE3/5B-CA?
SMBJ75CHE3/5B is unidirectional and features a cathode band for polarity-sensitive placement; bidirectional equivalents (e.g., SMBJ75CHE3/5B-CA) lack polarity marking and conduct symmetrically in both directions. The SMBJ75CHE3/5B provides lower forward voltage drop (VF ≤ 3.5 V at 50 A) and higher IFSM (100 A) than bidirectional versions, making it preferred for DC rail protection where directionality is known and surge polarity is predictable-such as 75 V battery-fed industrial controllers.
What is the thermal resistance and maximum junction temperature of SMBJ75CHE3/5B?
The SMBJ75CHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ max) of +150 °C. These values enable operation at full 5.0 W steady-state power dissipation up to +50 °C ambient, with linear derating above that point per Figure 2 in the datasheet. The SMBJ75CHE3/5B's thermal performance supports continuous use in enclosed industrial enclosures without forced airflow.
SMBJ75CHE3/5B 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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 134V
- Current - Peak Pulse (10/1000µs):
- 4.5A
- 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)
SMBJ75CHE3/5B FAQ
1.How can I place an order for SMBJ75CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CHE3/5B 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 SMBJ75CHE3/5B reliable?
The price and inventory of SMBJ75CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ75CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CHE3/5B?
SMBJ75CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CHE3/5B 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 SMBJ75CHE3/5B?
For technical support, including SMBJ75CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CHE3/5B requirements.
6.How does Aetrix verify that SMBJ75CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ75CHE3/5B 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 SMBJ75CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ75CHE3/5B?
All SMBJ75CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CHE3/5B, 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 SMBJ75CHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ75CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CHE3/5B Tags
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