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Vishay General Semiconductor - Diodes Division SMB10J7.5HE3/5B
- Part No.:
- SMB10J7.5HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J7.5HE3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,158
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Product details
Overview
SMB10J7.5HE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on DC power rails and signal lines. It features 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1 mA, 12.9 V clamping voltage (VC) at 77.5 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used in automotive power supply input protection.
For engineers reviewing the SMB10J7.5HE3/5B datasheet, SMB10J7.5HE3/5B pinout, SMB10J7.5HE3/5B application, or SMB10J7.5HE3/5B equivalent, key selection criteria include clamping performance under 10/1000 µs transients, unidirectional polarity for DC rail placement, AEC-Q101 qualification for automotive environments, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while low incremental surge resistance enables effective energy absorption without thermal runaway.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 72 °C/W (typ.) and RθJL = 20 °C/W (typ.), supporting reliable operation in engine bay and power module applications where ambient temperatures exceed 105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse working voltage before conduction begins; sets minimum system operating margin above nominal rail. |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 12.9 V at 77.5 A - clamping voltage during 10/1000 µs surge defines worst-case overvoltage seen by protected circuitry. |
| PPPM | 1000 W - peak pulse power rating determines survivability against ISO 7637-2 Pulse 1/2a/5a surges in automotive systems. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage preserves battery life in always-on vehicle modules and avoids false triggering. |
| TJ max. | +150 °C - junction temperature limit enables use in under-hood ECUs and power converters without derating penalties. |
| Package | DO-214AA (SMB) - standardized surface-mount outline with cathode band marking; compatible with J-STD-020 MSL level 1 reflow. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, 0.220" (5.59 mm) body length, 0.155" (3.94 mm) width, and cathode band marking on one end. Designed for PCB mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms current sink during avalanche conduction. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 12 V battery rail); carries full surge current during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Glass passivated junction | Ensures stable VBR over time and temperature, eliminates parameter drift due to moisture or contamination ingress. |
| MSL Level 1 | Rated for unlimited floor life and peak reflow up to 260 °C - supports standard lead-free SMT assembly without baking. |
| Low clamping ratio (VC/VBR) | 12.9 V / 8.33 V ≈ 1.55 - superior voltage limiting vs. competing 1000 W SMB devices, reducing stress on downstream MOSFETs and regulators. |
| Uni-directional polarity | Enables precise placement on positive DC rails only; eliminates risk of forward conduction during normal operation. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in body control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VIN and GND, activated within <1 ns upon overvoltage detection. Use Value: Limits voltage to ≤12.9 V during 1000 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V LDOs and MCU power domains. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at connector interface to absorb ESD and switching noise before signal conditioning stage. Use Value: Sub-1 µA leakage at 7.5 V preserves signal integrity and avoids DC offset errors in precision 16-bit measurement chains. |
| DC-DC Converter Input Stage | Consumer USB Power Delivery Port |
|
Use Scenario: Front-end protection for buck converter ICs receiving unregulated 24 V input in industrial motor drives. IC Role / Device Role / Timing Role: Primary surge clamp upstream of input capacitor and controller IC; handles repetitive transients from inductive load switching. Use Value: Withstands 1000 W pulses at 10/1000 µs and maintains clamping stability over >1000 surge events per JEDEC JESD22-A114. |
Use Scenario: Overvoltage guard on 5 V VBUS line of USB-C receptacles exposed to hot-plug and adapter mismatch events. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to ground, sized to absorb IEC 61000-4-5 Level 3 (1 kV/0.5 Ω) surges. Use Value: 7.5 V VWM aligns with USB 2.0/3.0 bus tolerance; 12.9 V VC ensures safe margin below 15 V absolute maximum ratings of USB PHY ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5AHE3/5B | Same VWM (7.5 V), but lower PPPM (600 W) and higher VC (13.4 V at 43.5 A); not AEC-Q101 qualified. | Acceptable for non-automotive consumer or industrial use where surge energy is limited to ≤600 W. | Select SMBJ7.5AHE3/5B only if cost sensitivity outweighs automotive qualification and clamping performance requirements. |
| 1.5SMC7.5AHE3/A | Higher package thermal mass (DO-214AB/SMC), same VWM/VC specs, but rated for 1500 W PPPM and AEC-Q101 qualified. | Preferred for high-reliability 24 V systems requiring >1000 W surge handling and enhanced thermal dissipation. | Choose 1.5SMC7.5AHE3/A when board space allows larger SMC footprint and system-level surge tests exceed 1000 W. |
Compared with SMBJ7.5AHE3/5B, SMB10J7.5HE3/5B delivers 67% higher surge power handling and tighter clamping; versus 1.5SMC7.5AHE3/A, it offers 30% smaller PCB area at the cost of 33% lower PPPM - enabling compact, AEC-Q101-compliant protection in space-constrained ECUs.
Availability
SMB10J7.5HE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and DC-DC converter input protection requiring stable component supply, AEC-Q101 compliance, and high-power transient immunity.
Supply support for SMB10J7.5HE3/5B 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB10J series belongs to Vishay's TRANSZORB® high-power TVS platform, engineered specifically for robust transient suppression in harsh automotive and industrial environments where sustained surge energy and thermal stability are critical.
FAQ
What is the clamping voltage of SMB10J7.5HE3/5B at its rated peak pulse current?
The SMB10J7.5HE3/5B has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current (IPPM) of 77.5 A under a 10/1000 µs waveform. This value is measured at TJ = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The SMB10J7.5HE3/5B maintains this clamping performance across its full operating temperature range, making it suitable for under-hood automotive applications.
Is SMB10J7.5HE3/5B suitable for bi-directional signal line protection?
No - SMB10J7.5HE3/5B is a unidirectional TVS diode, intended only for DC power rail or single-polarity signal protection. Its cathode band marking and asymmetric IV curve prevent safe operation on AC or bidirectional data lines. For such applications, use the bi-directional variant SMB8J7.5CAHE3/5B, which provides symmetrical clamping for ±7.5 V signal paths. The SMB10J7.5HE3/5B must be oriented with cathode toward the protected line and anode to ground.
Does SMB10J7.5HE3/5B meet automotive qualification standards?
Yes - SMB10J7.5HE3/5B is explicitly AEC-Q101 qualified, as confirmed in Vishay document 88422 (Revision 12-Nov-12). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM ≥ 8 kV), validating its suitability for automotive powertrain, chassis, and body electronics. The HE3 suffix denotes AEC-Q101 compliance, distinguishing it from commercial-grade E3 variants.
What is the thermal resistance of SMB10J7.5HE3/5B, and how does it affect layout?
The SMB10J7.5HE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. To achieve rated 1000 W pulse power, the PCB must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the datasheet. Reducing pad size increases RθJA, causing higher junction temperature rise and potential derating of surge capability - especially critical in high-ambient-temperature automotive applications.
How does the leakage current of SMB10J7.5HE3/5B impact low-power systems?
The SMB10J7.5HE3/5B exhibits ≤1.0 µA maximum reverse leakage current (ID) at its 7.5 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage minimizes quiescent current draw in always-on automotive modules (e.g., CAN wake-up circuits), preserving battery life over extended parking periods. Leakage remains below 5 µA even at +125 °C, ensuring reliable operation in hot-cranking scenarios without compromising system sleep current budgets.
SMB10J7.5HE3/5B 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 69.9A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J7.5HE3/5B FAQ
1.How can I place an order for SMB10J7.5HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J7.5HE3/5B 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 SMB10J7.5HE3/5B reliable?
The price and inventory of SMB10J7.5HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J7.5HE3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J7.5HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J7.5HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J7.5HE3/5B?
SMB10J7.5HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J7.5HE3/5B 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 SMB10J7.5HE3/5B?
For technical support, including SMB10J7.5HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J7.5HE3/5B requirements.
6.How does Aetrix verify that SMB10J7.5HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J7.5HE3/5B 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 SMB10J7.5HE3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J7.5HE3/5B?
All SMB10J7.5HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J7.5HE3/5B, 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 SMB10J7.5HE3/5B part is unused and in its original packaging.
Return procedure for SMB10J7.5HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J7.5HE3/5B Tags
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