My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA43AHE3_B/I
- Part No.:
- TPSMA43AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA43AHE3_B/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,601
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA43AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, with 43 V breakdown voltage (VBR), 59.3 V clamping voltage (VC) at 6.7 A peak pulse current, 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - designed for robust overvoltage protection of automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the TPSMA43AHE3_B/I datasheet, TPSMA43AHE3_B/I pinout, TPSMA43AHE3_B/I application, or TPSMA43AHE3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity, low clamping ratio (VC/VBR ≈ 1.38), MSL Level 1 rating, and compatibility with high-reliability PCB layouts requiring 0.2" × 0.2" copper pads per terminal.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge conditions. Its 10/1000 µs waveform response supports lightning and inductive-switching transient suppression while maintaining <1 ns intrinsic response time and low incremental surge resistance.
Designed for operation up to TJ = 185 °C, it features a positive temperature coefficient of VBR (0.092 %/°C), enabling predictable voltage shift across automotive thermal profiles. The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits ≤1.0 µA reverse leakage at 36.8 V stand-off voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 V / 43.0 V / 45.2 V - ensures reliable triggering above system operating voltage with margin against tolerance drift |
| VC @ IPPM | 59.3 V - limits downstream IC voltage stress during 6.7 A transient events |
| PPPM | 400 W - sustains standardized lightning surge energy (IEC 61000-4-5) on automotive and industrial signal lines |
| VWM | 36.8 V - defines maximum continuous reverse working voltage without significant leakage |
| TJ max. | +185 °C - enables placement near high-temperature components (e.g., power MOSFETs, engine control units) |
| IR @ VWM | ≤1.0 µA - minimizes standby power loss and avoids false triggering in low-current sensor circuits |
| MSL Level | Level 1 (260 °C peak) - allows standard lead-free reflow without moisture-induced damage |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, cathode-indicated by molded band. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), with 2.54 mm lead pitch and matte tin-plated terminals compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or clamping | Connected to protected line (e.g., CAN_H, LIN, sensor output); forms low-impedance path to ground during overvoltage |
| Cathode | Current exit point during clamping; marked by color band | Connected to system ground or low-impedance return path; determines unidirectional polarity and clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JEDEC standards |
| 185 °C junction rating | Enables use in under-hood ECUs and motor control modules where ambient temperatures exceed 125 °C |
| 400 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV surge) on 50 Ω source impedance with minimal PCB trace inductance |
| Low clamping ratio (VC/VBR = 1.38) | Reduces voltage overshoot margin required for protected ICs, allowing tighter design margins for 3.3 V or 5 V logic |
| MSL Level 1 | Eliminates bake-out requirement prior to SMT assembly, reducing manufacturing cost and cycle time |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop transmitters) in vehicle cabin temperature sensors exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching precision DAC or op-amp input stages. Use Value: Prevents latch-up or permanent damage to 12-bit ADC front-ends during ISO 7637-2 Pulse 5a (load dump) events up to 60 V. | Use Scenario: Shielding digital input channels on programmable logic controller (PLC) modules from field-wiring induced surges in factory automation environments. IC Role / Device Role / Timing Role: Standoff protection element on 24 V DC inputs, absorbing fast-rising ESD (IEC 61000-4-2) and inductive kickback from solenoid drivers. Use Value: Maintains functional safety integrity by limiting voltage at microcontroller GPIO pins to <60 V during 1 kV/500 A surge events. |
| Telecom Line Interface | Computer Peripheral Port Protection |
Use Scenario: Safeguarding RS-485 transceiver bus lines (A/B) in outdoor telecom base station equipment subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) referenced to local ground, providing differential and common-mode clamping. Use Value: Enables compliance with ITU-T K.20 immunity requirements (4 kV longitudinal, 2 kV transverse) without adding series impedance or signal distortion. | Use Scenario: Securing USB 2.0 D+/D− lines on embedded host controllers in medical diagnostic devices against ESD during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) transient suppressor placed directly at connector, shunting ESD current away from PHY transceiver ESD diodes. Use Value: Passes IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without data corruption or link reset, verified at 480 Mbps signaling rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same VBR (43 V) and VC (59.3 V), but SMB (DO-214AA) package - 1.6 mm taller, 0.5 mm wider, higher thermal resistance (RθJA ≈ 100 °C/W vs. 85 °C/W) | Less suitable for ultra-dense automotive PCBs due to larger footprint; requires revised pad layout and thermal relief design | Select SMBJ43A only when existing board space accommodates SMB outline and thermal budget permits higher junction rise |
| SMCJ43A | Higher PPPM (1500 W), same VBR/VC, but SMC (DO-214AB) package - 2.5× larger footprint, 3× higher mounting pad area requirement | Targeted at primary-level AC/DC input protection rather than secondary-side signal-line clamping | Choose SMCJ43A for front-end surge protection where PCB real estate and thermal mass allow; not recommended for space-constrained sensor nodes |
Compared with SMBJ43A and SMCJ43A, the TPSMA43AHE3_B/I offers optimal balance of surge capability, compact SMA footprint, and automotive qualification - making it preferred for secondary-side protection where board area, weight, and AEC-Q101 compliance are jointly critical.
Availability
TPSMA43AHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interface boards, and medical peripheral ports requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMA43AHE3_B/I 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, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade validation.
The TPSMA43AHE3_B/I belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-temperature, high-reliability transient suppression in automotive and industrial environments where sustained 150–185 °C operation is required.
FAQ
What is the clamping voltage of the TPSMA43AHE3_B/I and how is it measured?
The TPSMA43AHE3_B/I has a maximum clamping voltage (VC) of 59.3 V, measured at 6.7 A peak pulse current (IPPM) using a standardized 10/1000 µs double-exponential waveform. This value reflects the actual voltage seen by protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range per Vishay Document 88405.
Is the TPSMA43AHE3_B/I AEC-Q101 qualified and what does that cover?
Yes, the TPSMA43AHE3_B/I is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88405 datasheet. Qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling, unbiased highly accelerated stress test (uHAST), and mechanical shock - validating suitability for automotive electronic control units and sensor systems.
What is the meaning of the "B/I" suffix in TPSMA43AHE3_B/I?
The "B/I" suffix in TPSMA43AHE3_B/I indicates revision level "B" and packaging in 13-inch plastic tape and reel (7500 units per reel). The "HE3" denotes RoHS-compliant, matte tin-plated leads, and AEC-Q101 qualification - distinguishing it from HM3 (halogen-free) variants.
Can the TPSMA43AHE3_B/I be used in bidirectional configurations?
No, the TPSMA43AHE3_B/I is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts only when cathode voltage exceeds anode voltage by >VBR; for bidirectional protection (e.g., RS-485 differential lines), two devices or a dedicated bidirectional TVS like SMAJ43CA must be used.
What is the thermal resistance (RθJA) of the TPSMA43AHE3_B/I in standard PCB layout?
Vishay specifies RθJA for the TPSMA43AHE3_B/I as 85 °C/W when mounted on a PCB with 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes FR-4 substrate, 1 oz copper, and no internal plane connections - actual thermal performance improves with additional copper pour or thermal vias.
TPSMA43AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA43AHE3_B/I FAQ
1.How can I place an order for TPSMA43AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA43AHE3_B/I 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 TPSMA43AHE3_B/I reliable?
The price and inventory of TPSMA43AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA43AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA43AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA43AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA43AHE3_B/I?
TPSMA43AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA43AHE3_B/I 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 TPSMA43AHE3_B/I?
For technical support, including TPSMA43AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA43AHE3_B/I requirements.
6.How does Aetrix verify that TPSMA43AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA43AHE3_B/I 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 TPSMA43AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA43AHE3_B/I?
All TPSMA43AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA43AHE3_B/I, 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 TPSMA43AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMA43AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA43AHE3_B/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
