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Vishay General Semiconductor - Diodes Division SMBJ90CAHE3_B/H
- Part No.:
- SMBJ90CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ90CAHE3_B/H.pdf
- Description:
- 600W,90V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,752
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Product details
Overview
SMBJ90CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 90 V standoff voltage (VWM), 100 V minimum breakdown voltage (VBR), 146 V maximum clamping voltage at 4.1 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in industrial motor drives to protect IGBT gate drivers from switching-induced surges.
For engineers reviewing the SMBJ90CAHE3_B/H datasheet, SMBJ90CAHE3_B/H pinout, SMBJ90CAHE3_B/H application, or SMBJ90CAHE3_B/H equivalent, key selection criteria include bidirectional surge clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche junction structure, responding within <1 ps to transient overvoltages. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with leakage current ≤1.0 μA at 90 V standoff and temperature coefficient of VBR at +0.106 %/°C.
The SMBJ90CAHE3_B/H is rated for repetitive 10/1000 μs surge pulses at 0.01 % duty cycle and derates linearly above 25 °C ambient per Fig. 2. Junction-to-lead thermal resistance is 20 °C/W, enabling effective heat dissipation into PCB copper when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (min) | 100 V at 1 mA test current - Minimum voltage at which avalanche conduction begins; ensures reliable turn-on during overvoltage events. |
| VC (max) | 146 V at IPPM = 4.1 A - Peak clamped voltage seen by protected circuit; determines maximum stress on downstream components. |
| PPPM | 600 W with 10/1000 μs waveform - Surge energy handling capacity; supports robust protection against lightning and inductive kickback. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-temperature industrial environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires adequate PCB copper area (0.2" × 0.2") for thermal management. |
| AEC-Q101 | Qualified - Meets automotive-grade reliability requirements for vibration, temperature cycling, and HTRB testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), matte tin-plated leads, MSL Level 1, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; forms symmetrical clamping path with cathode. |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive transients; completes bidirectional clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both directions - eliminates need for polarity-aware placement in AC-coupled or floating signal lines. |
| 600 W peak pulse power | Handles 10/1000 μs surges up to 4.1 A without degradation - sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) compliance with margin. |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics - supports long-term reliability in harsh thermal/vibration environments. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during clamping - reduces stress on 100 V-rated MOSFETs and gate drivers. |
| MSL Level 1 moisture sensitivity | Unlimited floor life at ≤30 °C/60 % RH - compatible with standard SMT reflow without baking preconditioning. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of IGBT gate driver inputs against voltage spikes caused by rapid inductive load switching in 48 V BLDC motor controllers. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly across gate resistor input to suppress ±150 V transients. Use Value: Limits gate-source voltage to ≤146 V, preventing IGBT destruction while maintaining fast switching integrity. |
Use Scenario: Surge suppression on LIN bus lines exposed to load dump and battery reversal in door module ECUs. IC Role / Device Role / Timing Role: Primary line protector on bidirectional serial communication interface, placed before transceiver IC input. Use Value: Clamps transients to 146 V within <1 ps, preserving signal integrity and meeting ISO 16750-2 pulse 5a requirements. |
| Telecom Power Supplies | Industrial PLC Analog Inputs |
|
Use Scenario: Input-stage protection of 48 V DC-DC converters in base station power systems subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient suppressor on primary DC input rail, upstream of bulk capacitor and controller IC. Use Value: Absorbs 600 W surges without failure, enabling compliance with ITU-T K.20 and Telcordia GR-1089-CORE. |
Use Scenario: Protection of 0–10 V analog sensor inputs in programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) clamp across input terminals to prevent op-amp saturation and ADC corruption. Use Value: Maintains signal accuracy with <0.1 % error contribution at 90 V bias, while clamping >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 |
|---|---|---|---|
| SMBJ90CA-E3/52 | Same electrical specs, RoHS-compliant commercial grade without AEC-Q101 qualification; RθJA = 100 °C/W, same SMB package. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select SMBJ90CAHE3_B/H when automotive qualification, extended temperature validation, or traceable sourcing is required. |
| SMCJ90CAHE3_A/H | Higher 1500 W PPPM rating, larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); same VWM/VBR/VC values and AEC-Q101 qualification. | Offers higher surge margin but requires larger PCB footprint and different pad layout; not drop-in compatible. | Choose SMBJ90CAHE3_B/H for space-constrained layouts where 600 W is sufficient; use SMCJ90CAHE3_A/H only when higher energy absorption is critical. |
Compared with SMBJ90CA-E3/52, SMBJ90CAHE3_B/H adds AEC-Q101 qualification and automotive traceability; compared with SMCJ90CAHE3_A/H, it trades surge capacity for compact SMB footprint - making SMBJ90CAHE3_B/H optimal for cost- and space-sensitive automotive and industrial edge nodes.
Availability
SMBJ90CAHE3_B/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and PLC analog inputs requiring stable component supply with automotive-grade reliability and SMT compatibility.
Supply support for SMBJ90CAHE3_B/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets high-reliability transient suppression in space-constrained, high-surge environments - engineered for automotive, industrial, and telecom applications demanding consistent clamping performance and AEC-Q101 validation.
FAQ
What is the clamping voltage of SMBJ90CAHE3_B/H at its rated peak pulse current?
The SMBJ90CAHE3_B/H has a maximum clamping voltage (VC) of 146 V at its rated peak pulse current (IPPM) of 4.1 A, measured with a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuits during surge events and is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88392. The SMBJ90CAHE3_B/H maintains this clamping performance bidirectionally due to its symmetrical junction design.
Is SMBJ90CAHE3_B/H qualified for automotive applications?
Yes, SMBJ90CAHE3_B/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in the Ordering Information section (page 3) and Notes (page 2) of Vishay document 88392. This qualification covers stress tests including temperature cycling, highly accelerated life testing (HALT), and mechanical shock - validating its suitability for automotive powertrain, body electronics, and ADAS subsystems where reliability under thermal and vibration stress is mandatory.
What is the standoff voltage (VWM) and why is it important for SMBJ90CAHE3_B/H?
The standoff voltage (VWM) of SMBJ90CAHE3_B/H is 90 V - the maximum DC or continuous reverse working voltage the device can withstand without entering avalanche conduction. This parameter ensures minimal leakage (<1.0 μA) during normal operation while providing a safety margin below the 100 V minimum breakdown voltage (VBR). Selecting VWM ≥ system operating voltage prevents false triggering and preserves signal integrity in 48 V or 90 V nominal systems.
Does SMBJ90CAHE3_B/H have polarity markings, and how is it mounted?
No, SMBJ90CAHE3_B/H has no polarity markings because it is a bidirectional TVS diode - both terminals function identically regardless of applied voltage polarity. Mounting follows the SMB (DO-214AA) outline: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, matte tin-plated leads solderable per J-STD-002, and compatible with standard reflow profiles (peak 260 °C, MSL Level 1).
How does the thermal resistance of SMBJ90CAHE3_B/H affect PCB layout?
SMBJ90CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, which means PCB copper area directly impacts its ability to dissipate surge energy. To maintain safe junction temperatures during repetitive surges, Vishay specifies mounting on minimum 0.2" × 0.2" copper pads per terminal. Reducing pad size increases RθJA, risking thermal runaway; adding thermal vias or internal planes lowers effective RθJA and improves reliability in high-duty-cycle applications.
SMBJ90CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ90CAHE3_B/H FAQ
1.How can I place an order for SMBJ90CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ90CAHE3_B/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 SMBJ90CAHE3_B/H reliable?
The price and inventory of SMBJ90CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ90CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ90CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ90CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ90CAHE3_B/H?
SMBJ90CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ90CAHE3_B/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 SMBJ90CAHE3_B/H?
For technical support, including SMBJ90CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ90CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ90CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ90CAHE3_B/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 SMBJ90CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ90CAHE3_B/H?
All SMBJ90CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ90CAHE3_B/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 SMBJ90CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ90CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ90CAHE3_B/H Tags
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