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Vishay General Semiconductor - Diodes Division SMBJ36CAHE3_A/H
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- Part No.:
- SMBJ36CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CAHE3_A/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,675
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Product details
Overview
SMBJ36CAHE3_A/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 36 V standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 58.1 V maximum clamping voltage (VC) at 10.3 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in industrial sensor interfaces and automotive ECUs.
For engineers reviewing the SMBJ36CAHE3_A/H datasheet, SMBJ36CAHE3_A/H pinout, SMBJ36CAHE3_A/H application, or SMBJ36CAHE3_A/H equivalent, this device serves as a robust, AEC-Q101-qualified protection solution for bidirectional DC rails and AC-coupled signal paths where low clamping voltage, fast response (<1 ns), and repeatable surge immunity are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (40.0 V / 44.2 V), ID ≤ 1.0 µA at VWM, and VC = 58.1 V measured at IPPM = 10.3 A under standardized 10/1000 µs surge. Its glass-passivated junction ensures stable leakage and low incremental surge resistance.
Thermal performance is defined by RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation from –55 °C to +150 °C junction temperature. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification - required for automotive-grade board-level ESD and load-dump protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin above nominal 32–33 V automotive rail. |
| VBR (min/max) | 40.0 V / 44.2 V at IT = 1 mA - defines tight breakdown window ensuring predictable turn-on without premature conduction. |
| VC @ IPPM | 58.1 V at 10.3 A - clamping voltage during 10/1000 µs surge; limits downstream IC stress to <60 V under worst-case transients. |
| PPPM | 600 W - peak pulse power handling capability; supports IEC 61000-4-5 Level 3 (1 kV/42 Ω) surge testing. |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves battery life and avoids false triggers in high-impedance sensor bias networks. |
| TJ max. | +150 °C - enables placement near hot components (e.g., power MOSFETs, motor drivers) without derating concerns. |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.0 mm × 3.9 mm footprint and 2.2 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band marking - simplifies layout and eliminates orientation errors during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating DC buses without external polarity management. |
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control modules and body electronics requiring reliability over temperature and lifetime. |
| 600 W peak pulse power | Withstands repeated 10/1000 µs surges up to 10.3 A - meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 requirements. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during transients - critical for protecting 3.3 V/5 V logic interfaces tied to 36 V supply domains. |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow profiles without moisture sensitivity concerns - eliminates baking step in manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and CAN FD physical layer inputs against load dump and jump-start transients in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between VCC and GND or across differential signal pairs to limit excursion beyond 60 V. Use Value: Prevents latch-up or gate oxide damage in transceiver ICs during ISO 7637-2 Pulse 5a (load dump), maintaining communication integrity. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops, 0–10 V sensors) in factory automation PLC I/O modules from EFT and surge coupling. IC Role / Device Role / Timing Role: Low-capacitance shunt protector mounted directly at connector entry point to divert fast transients before reaching precision ADC front-end. Use Value: Maintains signal fidelity by limiting clamping voltage to 58.1 V while adding <0.5 pF parasitic capacitance - no bandwidth degradation. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Feedback Path |
|
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras, access points) against induced surges on 48 V DC input derived from Ethernet cabling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs and fuses for staged protection. Use Value: Fast sub-nanosecond response captures high-dV/dt events missed by slower thermal protectors - prevents brownout or reset during lightning-induced surges. |
Use Scenario: Securing hall-effect rotor position feedback lines in BLDC motor controllers embedded in HVAC systems and washing machines. IC Role / Device Role / Timing Role: Localized TVS at motor controller PCB edge, placed adjacent to optocoupler or isolated amplifier inputs. Use Value: Withstands repetitive commutation noise (dV/dt > 1 kV/µs) and inductive kickback without degradation - ensures accurate timing and closed-loop stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-M3/52 | Same electrical specs and SMB package; halogen-free, RoHS-compliant, but not AEC-Q101 qualified. | Suitable for commercial/industrial use only - not certified for automotive underhood deployment. | Select when AEC-Q101 is not required and halogen-free compliance is mandated by OEM sustainability policy. |
| SMCJ36CAHE3_A/H | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher PPPM (1500 W) and IPPM (24.9 A). | Used where higher surge margin is needed (e.g., main power input vs. secondary rail); requires larger PCB area. | Choose when system-level surge testing exceeds 600 W - e.g., IEC 61000-4-5 Level 4 - and board space permits SMC footprint. |
Compared with SMBJ36CAHE3_A/H, SMBJ36CA-M3/52 offers identical protection performance without automotive qualification, while SMCJ36CAHE3_A/H delivers 2.5× higher surge capacity in a larger package - enabling tiered design reuse across product families with varying reliability and footprint constraints.
Availability
SMBJ36CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer appliance motor controls requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ36CAHE3_A/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 is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be mitigated without compromising signal integrity or thermal performance.
FAQ
What does the "CA" suffix indicate in SMBJ36CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ36CAHE3_A/H provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SMBJ36A), it has no cathode marking and functions identically regardless of terminal orientation, making it ideal for AC-coupled or floating DC circuits where polarity reversal may occur.
Is SMBJ36CAHE3_A/H suitable for protecting 3.3 V logic interfaces?
No - SMBJ36CAHE3_A/H is not appropriate for direct 3.3 V logic protection due to its 36 V standoff voltage and 58.1 V clamping level. It is intended for higher-voltage domains such as 24 V/36 V industrial rails or automotive 12 V/24 V systems. For 3.3 V interfaces, lower-VWM TVS devices like SMAJ5.0CA or DFN-based low-capacitance arrays should be used instead.
Does SMBJ36CAHE3_A/H meet automotive qualification standards?
Yes - the "HE3" suffix confirms SMBJ36CAHE3_A/H is RoHS-compliant and AEC-Q101 qualified per Vishay's documentation. This certification validates its performance under temperature cycling, humidity, mechanical shock, and lifetime surge stress - making it approved for use in automotive electronic control units, body modules, and ADAS subsystems.
What is the maximum allowable PCB pad size for SMBJ36CAHE3_A/H to achieve rated PPPM?
To achieve the full 600 W peak pulse power rating, SMBJ36CAHE3_A/H must be mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, as specified in the Vishay datasheet. Smaller pads will reduce thermal dissipation and require derating of IPPM and PPPM per Figure 2 in document 88392.
How does SMBJ36CAHE3_A/H compare to unidirectional SMBJ36AHE3_A/H in circuit implementation?
SMBJ36CAHE3_A/H replaces two unidirectional devices in back-to-back configuration with a single component - reducing BOM count, PCB area, and assembly cost. While SMBJ36AHE3_A/H protects only one polarity (cathode-marked), SMBJ36CAHE3_A/H handles both directions inherently, eliminating risk of incorrect orientation and simplifying layout for differential or AC-linked protection schemes.
SMBJ36CAHE3_A/H 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMBJ36CAHE3_A/H FAQ
1.How can I place an order for SMBJ36CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/H reliable?
The price and inventory of SMBJ36CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ36CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CAHE3_A/H?
SMBJ36CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/H?
For technical support, including SMBJ36CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ36CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ36CAHE3_A/H?
All SMBJ36CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CAHE3_A/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 SMBJ36CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ36CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CAHE3_A/H Tags
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